Pass cls
parameter into @classmethod
to resolve this problem.
@classmethod
def test(cls):
return ''
The correct way of referring to a method parameter is like this:
Magic constants: Although these are not just symbols but important part of this token family. There are eight magical constants that change depending on where they are used.
__LINE__
: The current line number of the file.
__FILE__
: The full path and filename of the file. If used inside an include, the name of the included file is returned. Since PHP 4.0.2, __FILE__
always contains an absolute path with symlinks resolved whereas in older versions it contained relative path under some circumstances.
__DIR__
: The directory of the file. If used inside an include, the directory of the included file is returned. This is equivalent to dirname(__FILE__)
. This directory name does not have a trailing slash unless it is the root directory. (Added in PHP 5.3.0.)
__FUNCTION__
: The function name. (Added in PHP 4.3.0) As of PHP 5 this constant returns the function name as it was declared (case-sensitive). In PHP 4 its value is always lowercased.
__CLASS__
: The class name. (Added in PHP 4.3.0) As of PHP 5 this constant returns the class name as it was declared (case-sensitive). In PHP 4 its value is always lowercased. The class name includes the namespace it was declared in (e.g. Foo\Bar
). Note that as of PHP 5.4 __CLASS__
works also in traits. When used in a trait method, __CLASS__
is the name of the class the trait is used in.
__TRAIT__
: The trait name. (Added in PHP 5.4.0) As of PHP 5.4 this constant returns the trait as it was declared (case-sensitive). The trait name includes the namespace it was declared in (e.g. Foo\Bar
).
__METHOD__
: The class method name. (Added in PHP 5.0.0) The method name is returned as it was declared (case-sensitive).
__NAMESPACE__
: The name of the current namespace (case-sensitive). This constant is defined in compile-time (Added in PHP 5.3.0).
I think you want something like this. The formatting is off, but it should give the essential information you want.
import java.util.Scanner;
public class BookstoreCredit
{
public static void computeDiscount(String name, double gpa)
{
double credits;
credits = gpa * 10;
System.out.println(name + " your GPA is " +
gpa + " so your credit is $" + credits);
}
public static void main (String args[])
{
String studentName;
double gradeAverage;
Scanner inputDevice = new Scanner(System.in);
System.out.println("Enter Student name: ");
studentName = inputDevice.nextLine();
System.out.println("Enter student GPA: ");
gradeAverage = inputDevice.nextDouble();
computeDiscount(studentName, gradeAverage);
}
}
The default constructor has no arguments. You need to specify a constructor:
public Friends( String firstName, String age) { ... }
Inside of VBS you can access parameters with
Wscript.Arguments(0)
Wscript.Arguments(1)
and so on. The number of parameter:
Wscript.Arguments.Count
Lodash:
var args = _.toArray(arguments);
in action:
(function(){ console.log(_.toArray(arguments).splice(1)); })(1, 2, 3)
produces:
[2,3]
Try calling it like: obj.some_function( '1', 2, '3', g="foo", h="bar" )
. After the required positional arguments, you can specify specific optional arguments by name.
You can also try something like the following:
function clicked() {
var myDiv = $("#my-div");
$.post("someurl.php",someData,function(data){
doSomething(data, myDiv);
},"json");
}
function doSomething(curData, curDiv) {
}
I wanna submit my project : https://github.com/flyingangel/argparser
source argparser.sh
parse_args "$@"
Simple as that. The environment will be populated with variables with the same name as the arguments
I guess I'm unclear about what the OP was really asking for... Do you want to pass the whole array/list and operate on it inside the function? Or do you want the same thing done on every value/item in the array/list. If the latter is what you wish I have found a method which works well.
I'm more familiar with programming languages such as Fortran and C, in which you can define elemental functions which operate on each element inside an array. I finally tracked down the python equivalent to this and thought I would repost the solution here. The key is to 'vectorize' the function. Here is an example:
def myfunc(a,b):
if (a>b): return a
else: return b
vecfunc = np.vectorize(myfunc)
result=vecfunc([[1,2,3],[5,6,9]],[7,4,5])
print(result)
Output:
[[7 4 5]
[7 6 9]]
How about:
when(a.method(isA(A.class))).thenReturn(b);
or:
when(a.method((A)notNull())).thenReturn(b);
dir(sys)
says no. len(sys.argv)
works, but in Python it is better to ask for forgiveness than permission, so
#!/usr/bin/python
import sys
try:
in_file = open(sys.argv[1], "r")
except:
sys.exit("ERROR. Can't read supplied filename.")
text = in_file.read()
print(text)
in_file.close()
works fine and is shorter.
If you're going to exit anyway, this would be better:
#!/usr/bin/python
import sys
text = open(sys.argv[1], "r").read()
print(text)
I'm using print()
so it works in 2.7 as well as Python 3.
We can create functions which use named parameters (only) for default values. This is a continuation of bk.'s answer.
#include <stdio.h>
struct range { int from; int to; int step; };
#define range(...) range((struct range){.from=1,.to=10,.step=1, __VA_ARGS__})
/* use parentheses to avoid macro subst */
void (range)(struct range r) {
for (int i = r.from; i <= r.to; i += r.step)
printf("%d ", i);
puts("");
}
int main() {
range();
range(.from=2, .to=4);
range(.step=2);
}
The C99 standard defines that later names in the initialization override previous items. We can also have some standard positional parameters as well, just change the macro and function signature accordingly. The default value parameters can only be used in named parameter style.
Program output:
1 2 3 4 5 6 7 8 9 10
2 3 4
1 3 5 7 9
Can a Python function be an argument of another function?
Yes.
def myfunc(anotherfunc, extraArgs):
anotherfunc(*extraArgs)
To be more specific ... with various arguments ...
>>> def x(a,b):
... print "param 1 %s param 2 %s"%(a,b)
...
>>> def y(z,t):
... z(*t)
...
>>> y(x,("hello","manuel"))
param 1 hello param 2 manuel
>>>
Don't forget about spaces:
source=""
samples=("")
if [ $1 = "country" ]; then
source="country"
samples="US Canada Mexico..."
else
echo "try again"
fi
If you want to pass a pointer-to-int into your function,
Declaration of function (if you need it):
void Fun(int *ptr);
Definition of function:
void Fun(int *ptr) {
int *other_pointer = ptr; // other_pointer points to the same thing as ptr
*other_ptr = 3; // manipulate the thing they both point to
}
Use of function:
int main() {
int x = 2;
printf("%d\n", x);
Fun(&x);
printf("%d\n", x);
}
Note as a general rule, that variables called Ptr
or Pointer
should never have type int
, which is what you have then in your code. A pointer-to-int has type int *
.
If I have a second pointer (int *oof), then:
bar = oof means: bar points to the oof pointer
It means "make bar point to the same thing oof points to".
bar = *oof means: bar points to the value that oof points to, but not to the oof pointer itself
That doesn't mean anything, it's invalid. bar
is a pointer *oof
is an int. You can't assign one to the other.
*bar = *oof means: change the value that bar points to to the value that oof points to
Yes.
&bar = &oof means: change the memory address that bar points to be the same as the memory address that oof points to
Nope, that's invalid again. &bar
is a pointer to the bar
variable, but it is what's called an "rvalue", or "temporary", and it cannot be assigned to. It's like the result of an arithmetic calculation. You can't write x + 1 = 5
.
It might help you to think of pointers as addresses. bar = oof
means "make bar, which is an address, equal to oof, which is also an address". bar = &foo
means "make bar, which is an address, equal to the address of foo". If bar = *oof
meant anything, it would mean "make bar, which is an address, equal to *oof
, which is an int". You can't.
Then, &
is the address-of operator. It means "the address of the operand", so &foo
is the address of foo (i.e, a pointer to foo). *
is the dereference operator. It means "the thing at the address given by the operand". So having done bar = &foo
, *bar
is foo
.
The terms are somewhat interchangeable. The distinction described in other answers is more properly expressed with the terms formal parameter for the name used inside the body of the function and parameter for the value supplied at the call site (formal argument and argument are also common).
Also note that, in mathematics, the term argument is far more common and parameter usually means something quite different (though the parameter in a parametric equation is essentially the argument to two or more functions).
FOR %%A IN (%*) DO (
REM Now your batch file handles %%A instead of %1
REM No need to use SHIFT anymore.
ECHO %%A
)
This loops over the batch parameters (%*) either they are quoted or not, then echos each parameter.
Use the collapse
argument to paste
:
paste(a,collapse=" ")
[1] "aa bb cc"
_tmain is a macro that gets redefined depending on whether or not you compile with Unicode or ASCII. It is a Microsoft extension and isn't guaranteed to work on any other compilers.
The correct declaration is
int _tmain(int argc, _TCHAR *argv[])
If the macro UNICODE is defined, that expands to
int wmain(int argc, wchar_t *argv[])
Otherwise it expands to
int main(int argc, char *argv[])
Your definition goes for a bit of each, and (if you have UNICODE defined) will expand to
int wmain(int argc, char *argv[])
which is just plain wrong.
std::cout works with ASCII characters. You need std::wcout if you are using wide characters.
try something like this
#include <iostream>
#include <tchar.h>
#if defined(UNICODE)
#define _tcout std::wcout
#else
#define _tcout std::cout
#endif
int _tmain(int argc, _TCHAR *argv[])
{
_tcout << _T("There are ") << argc << _T(" arguments:") << std::endl;
// Loop through each argument and print its number and value
for (int i=0; i<argc; i++)
_tcout << i << _T(" ") << argv[i] << std::endl;
return 0;
}
Or you could just decide in advance whether to use wide or narrow characters. :-)
Updated 12 Nov 2013:
Changed the traditional "TCHAR" to "_TCHAR" which seems to be the latest fashion. Both work fine.
End Update
I agree with Ken's answer as being the most dynamic and I like to take it a step further. If it's a function that you call multiple times with different arguments - I use Ken's design but then add default values:
function load(context) {
var defaults = {
parameter1: defaultValue1,
parameter2: defaultValue2,
...
};
var context = extend(defaults, context);
// do stuff
}
This way, if you have many parameters but don't necessarily need to set them with each call to the function, you can simply specify the non-defaults. For the extend method, you can use jQuery's extend method ($.extend()
), craft your own or use the following:
function extend() {
for (var i = 1; i < arguments.length; i++)
for (var key in arguments[i])
if (arguments[i].hasOwnProperty(key))
arguments[0][key] = arguments[i][key];
return arguments[0];
}
This will merge the context object with the defaults and fill in any undefined values in your object with the defaults.
The following will set LAST
to last argument without changing current environment:
LAST=$({
shift $(($#-1))
echo $1
})
echo $LAST
If other arguments are no longer needed and can be shifted it can be simplified to:
shift $(($#-1))
echo $1
For portability reasons following:
shift $(($#-1));
can be replaced with:
shift `expr $# - 1`
Replacing also $()
with backquotes we get:
LAST=`{
shift \`expr $# - 1\`
echo $1
}`
echo $LAST
Another scenario that you can get the [: too many arguments
or [: a: binary operator expected
errors is if you try to test for all arguments "$@"
if [ -z "$@" ]
then
echo "Argument required."
fi
It works correctly if you call foo.sh
or foo.sh arg1
. But if you pass multiple args like foo.sh arg1 arg2
, you will get errors. This is because it's being expanded to [ -z arg1 arg2 ]
, which is not a valid syntax.
The correct way to check for existence of arguments is [ "$#" -eq 0 ]
. ($#
is the number of arguments).
The answer I was searching for was answered here: How to use python argparse with args other than sys.argv?
If main.py
and parse_args()
is written in this way, then the parsing can be done nicely
# main.py
import argparse
def parse_args():
parser = argparse.ArgumentParser(description="")
parser.add_argument('--input', default='my_input.txt')
return parser
def main(args):
print(args.input)
if __name__ == "__main__":
parser = parse_args()
args = parser.parse_args()
main(args)
Then you can call main()
and parse arguments with parser.parse_args(['--input', 'foobar.txt'])
to it in another python script:
# temp.py
from main import main, parse_args
parser = parse_args()
args = parser.parse_args([]) # note the square bracket
# to overwrite default, use parser.parse_args(['--input', 'foobar.txt'])
print(args) # Namespace(input='my_input.txt')
main(args)
You shouldn't be doing tuple dereferencing on values that can change like your line below.
script, user_name = argv
The line above will fail if you pass less than one argument or more than one argument. A better way of doing this is to do something like this:
for arg in argv[1:]:
print arg
Of cause you will do something other than print the args. Maybe put a series of 'if' statement in the 'for' loop that set variables depending on the arguments passed. An even better way is to use the getopt or optparse packages.
yes, using *arg passing args to a function will make python unpack the values in arg and pass it to the function.
so:
>>> def printer(*args):
print args
>>> printer(2,3,4)
(2, 3, 4)
>>> printer(*range(2, 5))
(2, 3, 4)
>>> printer(range(2, 5))
([2, 3, 4],)
>>>
I have been puzzled a lot with this problem, since I am relively new in Python. I cannot apply the solution to the code given by the questioned, since it's not self executable. So I bring a very simple code:
from turtle import *
ts = Screen(); tu = Turtle()
def move(x,y):
print "move()"
tu.goto(100,100)
ts.listen();
ts.onclick(move)
done()
As you can see, the solution consists in using two (dummy) arguments, even if they are not used either by the function itself or in calling it! It sounds crazy, but I believe there must be a reason for it (hidden from the novice!).
I have tried a lot of other ways ('self' included). It's the only one that works (for me, at least).
that value is contained in the variable $#
It exists, but it's hard to search for. I think most people call it the "splat" operator.
It's in the documentation as "Unpacking argument lists".
You'd use it like this: foo(*values)
. There's also one for dictionaries:
d = {'a': 1, 'b': 2}
def foo(a, b):
pass
foo(**d)
Pass an array to the function, instead of individual parameters and use null coalescing operator (PHP 7+).
Below, I'm passing an array with 2 items. Inside the function, I'm checking if value for item1 is set, if not assigned default vault.
$args = ['item2' => 'item2',
'item3' => 'value3'];
function function_name ($args) {
isset($args['item1']) ? $args['item1'] : 'default value';
}
If you want to do the validation for several functions you can add the logic inside a decorator like this:
def deco(func):
def wrapper(a,b,c):
if not isinstance(a, int)\
or not isinstance(b, int)\
or not isinstance(c, str):
raise TypeError
if not 0 < b < 10:
raise ValueError
if c == '':
raise ValueError
return func(a,b,c)
return wrapper
and use it:
@deco
def foo(a,b,c):
print 'ok!'
Hope this helps!
Consider using getopt_long()
. It allows both short and long options in any combination.
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
/* Flag set by `--verbose'. */
static int verbose_flag;
int
main (int argc, char *argv[])
{
while (1)
{
static struct option long_options[] =
{
/* This option set a flag. */
{"verbose", no_argument, &verbose_flag, 1},
/* These options don't set a flag.
We distinguish them by their indices. */
{"blip", no_argument, 0, 'b'},
{"slip", no_argument, 0, 's'},
{0, 0, 0, 0}
};
/* getopt_long stores the option index here. */
int option_index = 0;
int c = getopt_long (argc, argv, "bs",
long_options, &option_index);
/* Detect the end of the options. */
if (c == -1)
break;
switch (c)
{
case 0:
/* If this option set a flag, do nothing else now. */
if (long_options[option_index].flag != 0)
break;
printf ("option %s", long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
break;
case 'b':
puts ("option -b\n");
break;
case 's':
puts ("option -s\n");
break;
case '?':
/* getopt_long already printed an error message. */
break;
default:
abort ();
}
}
if (verbose_flag)
puts ("verbose flag is set");
/* Print any remaining command line arguments (not options). */
if (optind < argc)
{
printf ("non-option ARGV-elements: ");
while (optind < argc)
printf ("%s ", argv[optind++]);
putchar ('\n');
}
return 0;
}
Related:
You can also convert it to an array if you prefer. If Array generics are available:
var args = Array.slice(arguments)
Otherwise:
var args = Array.prototype.slice.call(arguments);
from Mozilla MDN:
You should not slice on arguments because it prevents optimizations in JavaScript engines (V8 for example).
If you want to use the same set of arguments all the time, the following is all you need.
run {
args = ["--myarg1", "--myarg2"]
}
You can also just use the pipeline with the AddScript Method:
string cmdArg = ".\script.ps1 -foo bar"
Collection<PSObject> psresults;
using (Pipeline pipeline = _runspace.CreatePipeline())
{
pipeline.Commands.AddScript(cmdArg);
pipeline.Commands[0].MergeMyResults(PipelineResultTypes.Error, PipelineResultTypes.Output);
psresults = pipeline.Invoke();
}
return psresults;
It will take a string, and whatever parameters you pass it.
I'm not sure I agree with inheritance from ValueError
-- my interpretation of the documentation is that ValueError
is only supposed to be raised by builtins... inheriting from it or raising it yourself seems incorrect.
Raised when a built-in operation or function receives an argument that has the right type but an inappropriate value, and the situation is not described by a more precise exception such as IndexError.
A good way of going about this is not to use nargin
, but to check whether the variables have been set using exist('opt', 'var')
.
Example:
function [a] = train(x, y, opt)
if (~exist('opt', 'var'))
opt = true;
end
end
See this answer for pros of doing it this way: How to check whether an argument is supplied in function call?
Yes Java allows vargs
in method parameter .
public class Varargs
{
public int add(int... numbers)
{
int result = 1;
for(int number: numbers)
{
result= result+number;
} return result;
}
}
From Dockerfile reference:
The
ARG
instruction defines a variable that users can pass at build-time to the builder with the docker build command using the--build-arg <varname>=<value>
flag.The
ENV
instruction sets the environment variable<key>
to the value<value>
.
The environment variables set usingENV
will persist when a container is run from the resulting image.
So if you need build-time customization, ARG
is your best choice.
If you need run-time customization (to run the same image with different settings), ENV
is well-suited.
If I want to add let's say 20 (a random number) of extensions or any other feature that can be enable|disable
Given the number of combinations involved, using ENV
to set those features at runtime is best here.
But you can combine both by:
ARG
ARG
as an ENV
That is, with a Dockerfile including:
ARG var
ENV var=${var}
You can then either build an image with a specific var
value at build-time (docker build --build-arg var=xxx
), or run a container with a specific runtime value (docker run -e var=yyy
)
Google's Android Documentation Says that :
An asynchronous task is defined by 3 generic types, called Params, Progress and Result, and 4 steps, called onPreExecute, doInBackground, onProgressUpdate and onPostExecute.
AsyncTask's generic types :
The three types used by an asynchronous task are the following:
Params, the type of the parameters sent to the task upon execution.
Progress, the type of the progress units published during the background computation.
Result, the type of the result of the background computation.
Not all types are always used by an asynchronous task. To mark a type as unused, simply use the type Void:
private class MyTask extends AsyncTask<Void, Void, Void> { ... }
You Can further refer : http://developer.android.com/reference/android/os/AsyncTask.html
Or You Can clear whats the role of AsyncTask by refering Sankar-Ganesh's Blog
private class MyTask extends AsyncTask<X, Y, Z>
protected void onPreExecute(){
}
This method is executed before starting the new Thread. There is no input/output values, so just initialize variables or whatever you think you need to do.
protected Z doInBackground(X...x){
}
The most important method in the AsyncTask class. You have to place here all the stuff you want to do in the background, in a different thread from the main one. Here we have as an input value an array of objects from the type “X” (Do you see in the header? We have “...extends AsyncTask” These are the TYPES of the input parameters) and returns an object from the type “Z”.
protected void onProgressUpdate(Y y){
}
This method is called using the method publishProgress(y) and it is usually used when you want to show any progress or information in the main screen, like a progress bar showing the progress of the operation you are doing in the background.
protected void onPostExecute(Z z){
}
This method is called after the operation in the background is done. As an input parameter you will receive the output parameter of the doInBackground method.
What about the X, Y and Z types?
As you can deduce from the above structure:
X – The type of the input variables value you want to set to the background process. This can be an array of objects.
Y – The type of the objects you are going to enter in the onProgressUpdate method.
Z – The type of the result from the operations you have done in the background process.
How do we call this task from an outside class? Just with the following two lines:
MyTask myTask = new MyTask();
myTask.execute(x);
Where x is the input parameter of the type X.
Once we have our task running, we can find out its status from “outside”. Using the “getStatus()” method.
myTask.getStatus();
and we can receive the following status:
RUNNING - Indicates that the task is running.
PENDING - Indicates that the task has not been executed yet.
FINISHED - Indicates that onPostExecute(Z) has finished.
Hints about using AsyncTask
Do not call the methods onPreExecute, doInBackground and onPostExecute manually. This is automatically done by the system.
You cannot call an AsyncTask inside another AsyncTask or Thread. The call of the method execute must be done in the UI Thread.
The method onPostExecute is executed in the UI Thread (here you can call another AsyncTask!).
The input parameters of the task can be an Object array, this way you can put whatever objects and types you want.
Edit: This answer is wrong, even though, strictly speaking, the code works. I'm only leaving it here because the discussion under it is too useful. This other answer is the best answer given at the time I last edited this: How do I pass a unique_ptr argument to a constructor or a function?
The basic idea of ::std::move
is that people who are passing you the unique_ptr
should be using it to express the knowledge that they know the unique_ptr
they're passing in will lose ownership.
This means you should be using an rvalue reference to a unique_ptr
in your methods, not a unique_ptr
itself. This won't work anyway because passing in a plain old unique_ptr
would require making a copy, and that's explicitly forbidden in the interface for unique_ptr
. Interestingly enough, using a named rvalue reference turns it back into an lvalue again, so you need to use ::std::move
inside your methods as well.
This means your two methods should look like this:
Base(Base::UPtr &&n) : next(::std::move(n)) {} // Spaces for readability
void setNext(Base::UPtr &&n) { next = ::std::move(n); }
Then people using the methods would do this:
Base::UPtr objptr{ new Base; }
Base::UPtr objptr2{ new Base; }
Base fred(::std::move(objptr)); // objptr now loses ownership
fred.setNext(::std::move(objptr2)); // objptr2 now loses ownership
As you see, the ::std::move
expresses that the pointer is going to lose ownership at the point where it's most relevant and helpful to know. If this happened invisibly, it would be very confusing for people using your class to have objptr
suddenly lose ownership for no readily apparent reason.
If you need to chuck a literal NULL
in, then you could have some issues. Apart from that, no, I think you're probably on the right track.
The other method some people choose is taking an assoc array of variables iterating through the argument list. It looks a bit neater but I imagine it's a little (very little) bit more process/memory intensive.
function myFunction (argArray) {
var defaults = {
'arg1' : "value 1",
'arg2' : "value 2",
'arg3' : "value 3",
'arg4' : "value 4"
}
for(var i in defaults)
if(typeof argArray[i] == "undefined")
argArray[i] = defaults[i];
// ...
}
This can also be done by using partial
from the standard library functools, like this:
from functools import partial
#(...)
action_with_arg = partial(action, arg)
button = Tk.Button(master=frame, text='press', command=action_with_arg)
Use --build-arg
with each argument.
If you are passing two argument then add --build-arg
with each argument like:
docker build \
-t essearch/ess-elasticsearch:1.7.6 \
--build-arg number_of_shards=5 \
--build-arg number_of_replicas=2 \
--no-cache .
public static T Runner<T>(Func<T> funcToRun)
{
//Do stuff before running function as normal
return funcToRun();
}
Usage:
var ReturnValue = Runner(() => GetUser(99));
PHP doesn't support traditional method overloading, however one way you might be able to achieve what you want, would be to make use of the __call
magic method:
class MyClass {
public function __call($name, $args) {
switch ($name) {
case 'funcOne':
switch (count($args)) {
case 1:
return call_user_func_array(array($this, 'funcOneWithOneArg'), $args);
case 3:
return call_user_func_array(array($this, 'funcOneWithThreeArgs'), $args);
}
case 'anotherFunc':
switch (count($args)) {
case 0:
return $this->anotherFuncWithNoArgs();
case 5:
return call_user_func_array(array($this, 'anotherFuncWithMoreArgs'), $args);
}
}
}
protected function funcOneWithOneArg($a) {
}
protected function funcOneWithThreeArgs($a, $b, $c) {
}
protected function anotherFuncWithNoArgs() {
}
protected function anotherFuncWithMoreArgs($a, $b, $c, $d, $e) {
}
}
Every Java program starts with
public static void main(String[] args) {
That array of type String
that main()
takes as a parameter holds the command line arguments to your program. If the user runs your program as
$ java myProgram a
then args[0]
will hold the String "a".
print("Total score for %s is %s " % (name, score))
%s
can be replace by %d
or %f
@Jon's :parse
/:endparse
scheme is a great start, and he has my gratitude for the initial pass, but if you think that the Windows torturous batch system would let you off that easy… well, my friend, you are in for a shock. I have spent the whole day with this devilry, and after much painful research and experimentation I finally managed something viable for a real-life utility.
Let us say that we want to implement a utility foobar
. It requires an initial command. It has an optional parameter --foo
which takes an optional value (which cannot be another parameter, of course); if the value is missing it defaults to default
. It also has an optional parameter --bar
which takes a required value. Lastly it can take a flag --baz
with no value allowed. Oh, and these parameters can come in any order.
In other words, it looks like this:
foobar <command> [--foo [<fooval>]] [--bar <barval>] [--baz]
Complicated? No, that seems pretty typical of real life utilities. (git
anyone?)
Without further ado, here is a solution:
@ECHO OFF
SETLOCAL
REM FooBar parameter demo
REM By Garret Wilson
SET CMD=%~1
IF "%CMD%" == "" (
GOTO usage
)
SET FOO=
SET DEFAULT_FOO=default
SET BAR=
SET BAZ=
SHIFT
:args
SET PARAM=%~1
SET ARG=%~2
IF "%PARAM%" == "--foo" (
SHIFT
IF NOT "%ARG%" == "" (
IF NOT "%ARG:~0,2%" == "--" (
SET FOO=%ARG%
SHIFT
) ELSE (
SET FOO=%DEFAULT_FOO%
)
) ELSE (
SET FOO=%DEFAULT_FOO%
)
) ELSE IF "%PARAM%" == "--bar" (
SHIFT
IF NOT "%ARG%" == "" (
SET BAR=%ARG%
SHIFT
) ELSE (
ECHO Missing bar value. 1>&2
ECHO:
GOTO usage
)
) ELSE IF "%PARAM%" == "--baz" (
SHIFT
SET BAZ=true
) ELSE IF "%PARAM%" == "" (
GOTO endargs
) ELSE (
ECHO Unrecognized option %1. 1>&2
ECHO:
GOTO usage
)
GOTO args
:endargs
ECHO Command: %CMD%
IF NOT "%FOO%" == "" (
ECHO Foo: %FOO%
)
IF NOT "%BAR%" == "" (
ECHO Bar: %BAR%
)
IF "%BAZ%" == "true" (
ECHO Baz
)
REM TODO do something with FOO, BAR, and/or BAZ
GOTO :eof
:usage
ECHO FooBar
ECHO Usage: foobar ^<command^> [--foo [^<fooval^>]] [--bar ^<barval^>] [--baz]
EXIT /B 1
Yes, it really is that bad. See my similar post at https://stackoverflow.com/a/50653047/421049, where I provide more analysis of what is going on in the logic, and why I used certain constructs.
Hideous. Most of that I had to learn today. And it hurt.
Yes. Please see the man page of bash ( the first thing you go to ) under Special Parameters
Special Parameters
The shell treats several parameters specially. These parameters may only be referenced; assignment to them is not allowed.
*
Expands to the positional parameters, starting from one. When the expansion occurs within double quotes, it expands to a single word with the value of each parameter separated by the first character of the IFS special variable. That is,"$*"
is equivalent to"$1c$2c..."
, wherec
is the first character of the value of the IFS variable. If IFS is unset, the parameters are separated by spaces. If IFS is null, the parameters are joined without intervening separators.
@
Expands to the positional parameters, starting from one. When the expansion occurs within double quotes, each parameter expands to a separate word. That is,"$@"
is equivalent to"$1"
"$2"
... If the double-quoted expansion occurs within a word, the expansion of the first parameter is joined with the beginning part of the original word, and the expansion of the last parameter is joined with the last part of the original word. When there are no positional parameters,"$@"
and$@
expand to nothing (i.e., they are removed).
Few years later, want to suggest just
for this: https://github.com/casey/just
action v1 v2=default:
@echo 'take action on {{v1}} and {{v2}}...'
npm install ps-grab
node greeting.js --user Abdennour --website http://abdennoor.com
--
var grab=require('ps-grab');
grab('--username') // return 'Abdennour'
grab('--action') // return 'http://abdennoor.com'
Or something like :
node vbox.js -OS redhat -VM template-12332 ;
--
var grab=require('ps-grab');
grab('-OS') // return 'redhat'
grab('-VM') // return 'template-12332'
Using Python 3 you can have both required and non-required keyword arguments:
Optional: (default value defined for param 'b')
def func1(a, *, b=42):
...
func1(value_for_a) # b is optional and will default to 42
Required (no default value defined for param 'b'):
def func2(a, *, b):
...
func2(value_for_a, b=21) # b is set to 21 by the function call
func2(value_for_a) # ERROR: missing 1 required keyword-only argument: 'b'`
This can help in cases where you have many similar arguments next to each other especially if they are of the same type, in that case I prefer using named arguments or I create a custom class if arguments belong together.
Drop the parentheses and commas:
myBackupFunction ".." "..." "xx"
And the function should look like this:
function myBackupFunction() {
# Here $1 is the first parameter, $2 the second, etc.
}
You have to check if the argument is undefined:
function func(a, b) {
if (a === undefined) a = "default value";
if (b === undefined) b = "default value";
}
I'm sorry, I still yet cant comment, so to answer Tom's answer... In javascript (undefined != null) == false In fact that function wont work with "null", you should use "undefined"
That would be compilable code, as long as StringSecond
was a class. However, if by "main method" you mean a second entry point into the program, then the answer to your question is still no. Only the first option (public static void main(String[] args)
) can be the entry point into your program.
Note, however, that if you were to place a second main(String[])
method in a different class (but in the same project) you could have multiple possible entry points into the project which you could then choose from. But this cannot conflict with the principles of overriding or overloading.
Also note that one source of confusion in this area, especially for introductory programmers, is that public static void main(String[] args)
and public static void main(String ... args)
are both used as entry points and are treated as having the same method signature.
Might be a bit odd or bad practice but this is one way of going about it.
(arg1, arg2, arg3) = (1, 2, 3)
if (arg1 == 1)*(arg2 == 2)*(arg3 == 3):
print('Example.')
Anything multiplied by 0 == 0. If any of these conditions fail then it evaluates to false.
They are not. They're exactly the same.
However, some people say that parameters are placeholders in method signatures:
public void doMethod(String s, int i) {
..
}
String s and int i are sometimes said to be parameters. The arguments are the actual values/references:
myClassReference.doMethod("someString", 25);
"someString" and 25 are sometimes said to be the arguments.
After digging through the PowerShell documentation, I discovered some useful information about this issue. You can't use the $args
if you used the param(...)
at the beginning of your file; instead you will need to use $PSBoundParameters
. I copy/pasted your code into a PowerShell script, and it worked as you'd expect in PowerShell version 2 (I am not sure what version you were on when you ran into this issue).
If you are using $PSBoundParameters
(and this ONLY works if you are using param(...)
at the beginning of your script), then it is not an array, it is a hash table, so you will need to reference it using the key / value pair.
param($p1, $p2, $p3, $p4)
$Script:args=""
write-host "Num Args: " $PSBoundParameters.Keys.Count
foreach ($key in $PSBoundParameters.keys) {
$Script:args+= "`$$key=" + $PSBoundParameters["$key"] + " "
}
write-host $Script:args
And when called with...
PS> ./foo.ps1 a b c d
The result is...
Num Args: 4
$p1=a $p2=b $p3=c $p4=d
You separate multiple program arguments with spaces. (this was not obvious to me)
Program arguments:Julia 52 Actress
Also, if anyone else has the "find: missing argument to -exec" this might help:
In some shells you don't need to do the escaping, i.e. you don't need the "\" in front of the ";".
find <file path> -name "myFile.*" -exec rm - f {} ;
Here is how I solved my problem:
Directive
app.directive("directive_name", function(){
return {
restrict: 'E',
transclude: true,
template: function(elem, attr){
return '<div><h2>{{'+attr.scope+'}}</h2></div>';
},
replace: true
};
})
Controller
$scope.building = function(data){
var chart = angular.element(document.createElement('directive_name'));
chart.attr('scope', data);
$compile(chart)($scope);
angular.element(document.getElementById('wrapper')).append(chart);
}
I now can use different scopes through the same directive and append them dynamically.
Yes, it might be really nice to have the capability to do as you have written. But it is not possible in MATLAB. Many of my utilities that allow defaults for the arguments tend to be written with explicit checks in the beginning like this:
if (nargin<3) or isempty(myParameterName)
MyParameterName = defaultValue;
elseif (.... tests for non-validity of the value actually provided ...)
error('The sky is falling!')
end
Ok, so I would generally apply a better, more descriptive error message. See that the check for an empty variable allows the user to pass in an empty pair of brackets, [], as a placeholder for a variable that will take on its default value. The author must still supply the code to replace that empty argument with its default value though.
My utilities that are more sophisticated, with MANY parameters, all of which have default arguments, will often use a property/value pair interface for default arguments. This basic paradigm is seen in the handle graphics tools in matlab, as well as in optimset, odeset, etc.
As a means to work with these property/value pairs, you will need to learn about varargin, as a way of inputing a fully variable number of arguments to a function. I wrote (and posted) a utility to work with such property/value pairs, parse_pv_pairs.m. It helps you to convert property/value pairs into a matlab structure. It also enables you to supply default values for each parameter. Converting an unwieldy list of parameters into a structure is a VERY nice way to pass them around in MATLAB.
This worked for me, use the VM args in NetBeans:
@Value("${a.b.c:#{abc}}"
...
@Value("${e.f.g:#{efg}}"
...
Netbeans:
-Da.b.c="..." -De.f.g="..."
Properties -> Run -> VM Options -> -De.f.g=efg -Da.b.c=abc
From the commandline
java -jar <yourjar> --Da.b.c="abc"
You can stop banging your heads now. Here is the wrapper for the member function to support existing functions taking in plain C functions as arguments. thread_local
directive is the key here.
// Example program
#include <iostream>
#include <string>
using namespace std;
typedef int FooCooker_ (int);
// Existing function
extern "C" void cook_10_foo (FooCooker_ FooCooker) {
cout << "Cooking 10 Foo ..." << endl;
cout << "FooCooker:" << endl;
FooCooker (10);
}
struct Bar_ {
Bar_ (int Foo = 0) : Foo (Foo) {};
int cook (int Foo) {
cout << "This Bar got " << this->Foo << endl;
if (this->Foo >= Foo) {
this->Foo -= Foo;
cout << Foo << " cooked" << endl;
return Foo;
} else {
cout << "Can't cook " << Foo << endl;
return 0;
}
}
int Foo = 0;
};
// Each Bar_ object and a member function need to define
// their own wrapper with a global thread_local object ptr
// to be called as a plain C function.
thread_local static Bar_* BarPtr = NULL;
static int cook_in_Bar (int Foo) {
return BarPtr->cook (Foo);
}
thread_local static Bar_* Bar2Ptr = NULL;
static int cook_in_Bar2 (int Foo) {
return Bar2Ptr->cook (Foo);
}
int main () {
BarPtr = new Bar_ (20);
cook_10_foo (cook_in_Bar);
Bar2Ptr = new Bar_ (40);
cook_10_foo (cook_in_Bar2);
delete BarPtr;
delete Bar2Ptr;
return 0;
}
Please comment on any issues with this approach.
Other answers fail to call existing plain C
functions: http://cpp.sh/8exun
Adding a shell script e.g. run.sh
makes it much more easier:
#!/usr/bin/env bash
export JAVA_PROGRAM_ARGS=`echo "$@"`
mvn exec:java -Dexec.mainClass="test.Main" -Dexec.args="$JAVA_PROGRAM_ARGS"
Then you are able to execute:
./run.sh arg1 arg2 arg3
Argument is often used in the sense of actual argument vs. formal parameter.
The formal parameter is what is given in the function declaration/definition/prototype, while the actual argument is what is passed when calling the function — an instance of a formal parameter, if you will.
That being said, they are often used interchangeably, their exact use depending on different programming languages and their communities. For example, I have also heard actual parameter etc.
So here, x
and y
would be formal parameters:
int foo(int x, int y) {
...
}
Whereas here, in the function call, 5 and z
are the actual arguments:
foo(5, z);
Yes, This will work in Javascript. You can also do that:
function func(a=10,b=20)
{
alert (a+' and '+b);
}
func(); // Result: 10 and 20
func(12); // Result: 12 and 20
func(22,25); // Result: 22 and 25
IF "%1"=="" will fail, all versions of this will fail under certain poison character conditions. Only IF DEFINED or IF NOT DEFINED are safe
Read up the concept of a name space. When you assign a variable in a function, you only assign it in the namespace of this function. But clearly you want to use it between all functions.
def defineAList():
#list = ['1','2','3'] this creates a new list, named list in the current namespace.
#same name, different list!
list.extend['1', '2', '3', '4'] #this uses a method of the existing list, which is in an outer namespace
print "For checking purposes: in defineAList, list is",list
return list
Alternatively, you can pass it around:
def main():
new_list = defineAList()
useTheList(new_list)
You might want to take a look at a similar question posted on Stack Overflow. It uses the .apply()
method to accomplish this.
A parameter is the variable which is part of the method’s signature (method declaration). An argument is an expression used when calling the method.
Consider the following code:
void Foo(int i, float f)
{
// Do things
}
void Bar()
{
int anInt = 1;
Foo(anInt, 2.0);
}
Here i
and f
are the parameters, and anInt
and 2.0
are the arguments.
Let's assume we have an array of objects and you want to check if value of name is defined like this,
let persons = [ {"name" : "test1"},{"name": "test2"}];
if(persons.some(person => person.name == 'test1')) {
... here your code in case person.name is defined and available
}
http://msdn.microsoft.com/en-us/library/k6h9cz8h.aspx - See this on registering IIS for ASP.NET 4.0
if you have a string of date, then you should try this.
const FORMAT = "YYYY ddd MMM DD HH:mm";
const theDate = moment("2019 Tue Apr 09 13:30", FORMAT);
// Tue Apr 09 2019 13:30:00 GMT+0300
const theDate1 = moment("2019 Tue Apr 09 13:30", FORMAT).format('LL')
// April 9, 2019
or try this :
const theDate1 = moment("2019 Tue Apr 09 13:30").format(FORMAT);
Simplest Explanation:
POST - Create NEW record
PUT - If the record exists, update else, create a new record
PATCH - update
GET - read
DELETE - delete
You need to detect the click from js side, your HTML remaining same. Note: this method is deprecated since v3.5.5 and removed in v4.
$("button").click(function() {
var $btn = $(this);
$btn.button('loading');
// simulating a timeout
setTimeout(function () {
$btn.button('reset');
}, 1000);
});
Also, don't forget to load jQuery and Bootstrap js (based on jQuery) file in your page.
Try using cmake itself. In the build directory, run:
cmake --build .
Use the below statement to delete any files:
FileUtils.forceDelete(FilePath);
Note: Use exception handling
codes if you want to use.
If you want to test if a particular extension is loaded you can also use the extension_loaded
function, see documentation here
php -r "var_dump(extension_loaded('json'));"
There are two things I think you could try to develop iPhone applications.
You can try the Aptana mobile wep app plugin for eclipse which is nice, although still in early stage. It comes with a emulator for running the applications so this could be helpful
You can try cocoa
(Extra) Here is a nice guide I found of guy who managed to get the iPhone SDK running in ubuntu, hope this help -_-. iPhone on Ubuntu
I found this to be weird but I got a solution. I noticed that every once in a while my project folder went read-only and I couldn't save it from VS. So I read a suggestion to transfer NPM from local user PATH to system-wide PATH global variable, and it worked like a charm.
Kotlin way
editText.setOnFocusChangeListener { _, hasFocus ->
if (!hasFocus) { }
}
you can try this when you write the recpient emails on a text file
from email.mime.text import MIMEText
from email.header import Header
import smtplib
f = open('emails.txt', 'r').readlines()
for n in f:
emails = n.rstrip()
server = smtplib.SMTP('smtp.uk.xensource.com')
server.ehlo()
server.starttls()
body = "Test Email"
subject = "Test"
from = "[email protected]"
to = emails
msg = MIMEText(body,'plain','utf-8')
msg['Subject'] = Header(subject, 'utf-8')
msg['From'] = Header(from, 'utf-8')
msg['To'] = Header(to, 'utf-8')
text = msg.as_string()
try:
server.send(from, emails, text)
print('Message Sent Succesfully')
except:
print('There Was An Error While Sending The Message')
I am so glad to solve this problem:
HttpPost httppost = new HttpPost(postData);
CookieStore cookieStore = new BasicCookieStore();
BasicClientCookie cookie = new BasicClientCookie("JSESSIONID", getSessionId());
//cookie.setDomain("your domain");
cookie.setPath("/");
cookieStore.addCookie(cookie);
client.setCookieStore(cookieStore);
response = client.execute(httppost);
So Easy!
You will need to melt
your dataframe to get it into the so-called long format:
require(reshape2)
sample.data.M <- melt(sample.data)
Now your field values are represented by their own rows and identified through the variable column. This can now be leveraged within the ggplot aesthetics:
require(ggplot2)
c <- ggplot(sample.data.M, aes(x = Rank, y = value, fill = variable))
c + geom_bar(stat = "identity")
Instead of stacking you may also be interested in showing multiple plots using facets:
c <- ggplot(sample.data.M, aes(x = Rank, y = value))
c + facet_wrap(~ variable) + geom_bar(stat = "identity")
//Response being your httpwebresponse
Dim str_StatusCode as String = CInt(Response.StatusCode)
Console.Writeline(str_StatusCode)
It is better to demonstrate this way
if [[ $# -eq 0 ]] ; then
echo 'some message'
exit 1
fi
You normally need to exit if you have too few arguments.
IMHO,
The best way is to randomize the name of the input field that has type=password
.
Use a prefix of "pwd" and then a random number.
Create the field dynamically and present the form to the user.
Your log-in form will look like...
<form>
<input type=password id=pwd67584 ...>
<input type=text id=username ...>
<input type=submit>
</form>
Then, on the server side, when you analyze the form posted by the client, catch the field with a name that starts with "pwd" and use it as 'password'.
Try passing it directly to the ng-click function:
<div class="col-lg-1 text-center">
<span class="glyphicon glyphicon-trash" data="{{event.id}}"
ng-click="deleteEvent(event.id)"></span>
</div>
Then it should be available in your handler:
$scope.deleteEvent=function(idPassedFromNgClick){
console.log(idPassedFromNgClick);
}
Here's an example
For frequent uses of this command I found it easy to add the location of C:\xampp\apache\bin
to the PATH
. Use whatever directory you have this installed in.
Then you can run from any directory in command line:
httpd -k restart
The answer above that suggests httpd -k -restart is actually a typo. You can see the commands by running httpd /?
You need to add the path to Tomcat's /lib/servlet-api.jar
file to the compile time classpath.
javac -cp .;/path/to/Tomcat/lib/servlet-api.jar com/example/MyServletClass.java
The classpath is where Java needs to look for imported dependencies. It will otherwise default to the current folder which is included as .
in the above example. The ;
is the path separator for Windows; if you're using an Unix based OS, then you need to use :
instead.
If you're still facing the same complation error, and you're actually using Tomcat 10 or newer, then you should be migrating the imports in your source code from javax.*
to jakarta.*
.
import jakarta.servlet.*;
import jakarta.servlet.http.*;
As many already noticed, the problem manifests itself only if the extra string contains whitespaces.
The root cause is that OP's host OS/shell (i.e. Windows/cmd.exe) mangles the entered command - the "
characters get lost, --es sms_body "test from adb"
becomes --es sms_body test from adb
. Which results in sms_body
string extra getting assigned the value of test
and the rest of the string becoming <URI>|<PACKAGE>|<COMPONENT>
specifier.
To avoid all that you could use:
adb shell "am broadcast -a com.whereismywifeserver.intent.TEST --es sms_body 'test from adb' -n com.whereismywifeserver/.IntentReceiver"
or just start the interactive adb shell
session first and run the am broadcast
command from inside of it.
You have different line endings in the example texts in Debuggex. What is especially interesting is that Debuggex seems to have identified which line ending style you used first, and it converts all additional line endings entered to that style.
I used Notepad++ to paste sample text in Unix and Windows format into Debuggex, and whichever I pasted first is what that session of Debuggex stuck with.
So, you should wash your text through your text editor before pasting it into Debuggex. Ensure that you're pasting the style you want. Debuggex defaults to Unix style (\n).
Also, NEL (\u0085) is something different entirely: https://en.wikipedia.org/wiki/Newline#Unicode
(\r?\n)
will cover Unix and Windows. You'll need something more complex, like (\r\n|\r|\n)
, if you want to match old Mac too.
on linux with g++ check out this lib
https://sourceforge.net/projects/libcsdbg
it does all the work for you
This is a sum up of every previous answers plus an additional solution using HTTP Refresh Header via .htaccess
1. HTTP Refresh Header
First of all, you can use .htaccess to set a refresh header like this
Header set Refresh "3"
This is the "static" equivalent of using the header()
function in PHP
header("refresh: 3;");
Note that this solution is not supported by every browser.
2. JavaScript
With an alternate URL:
<script>
setTimeout(function(){location.href="http://example.com/alternate_url.html"} , 3000);
</script>
Without an alternate URL:
<script>
setTimeout("location.reload(true);",timeoutPeriod);
</script>
Via jQuery:
<script>
window.location.reload(true);
</script>
3. Meta Refresh
You can use meta refresh when dependencies on JavaScript and redirect headers are unwanted
With an alternate URL:
<meta http-equiv="Refresh" content="3; url=http://example.com/alternate_url.html">
Without an alternate URL:
<meta http-equiv="Refresh" content="3">
Using <noscript>
:
<noscript>
<meta http-equiv="refresh" content="3" />
</noscript>
Optionally
As recommended by Billy Moon, you can provide a refresh link in case something goes wrong:
If you are not redirected automatically: <a href='http://example.com/alternat_url.html'>Click here</a>
Resources
Actually that is not 100% correct. That can give you Model (sometime numbers).
Will get you the Manufacturer of the phone (HTC portion of your request):
Build.MANUFACTURER
For a product name:
Build.PRODUCT
var div = document.createElement("div");_x000D_
div.style.width = "100px";_x000D_
div.style.height = "100px";_x000D_
div.style.background = "red";_x000D_
div.style.color = "white";_x000D_
div.innerHTML = "Hello";_x000D_
_x000D_
document.getElementById("main").appendChild(div);
_x000D_
<body>_x000D_
<div id="main"></div>_x000D_
</body>
_x000D_
var div = document.createElement("div");
div.style.width = "100px";
div.style.height = "100px";
div.style.background = "red";
div.style.color = "white";
div.innerHTML = "Hello";
document.getElementById("main").appendChild(div);
OR
document.body.appendChild(div);
Use parent reference instead of document.body
.
Use the -ss
option:
ffmpeg -ss 01:23:45 -i input -vframes 1 -q:v 2 output.jpg
For JPEG output use -q:v
to control output quality. Full range is a linear scale of 1-31 where a lower value results in a higher quality. 2-5 is a good range to try.
The select filter provides an alternative method for more complex needs such as selecting only certain frame types, or 1 per 100, etc.
Placing -ss
before the input will be faster. See FFmpeg Wiki: Seeking and this excerpt from the ffmpeg
cli tool documentation:
-ss
position (input/output)When used as an input option (before
-i
), seeks in this input file to position. Note the in most formats it is not possible to seek exactly, soffmpeg
will seek to the closest seek point before position. When transcoding and-accurate_seek
is enabled (the default), this extra segment between the seek point and position will be decoded and discarded. When doing stream copy or when-noaccurate_seek
is used, it will be preserved.When used as an output option (before an output filename), decodes but discards input until the timestamps reach position.
position may be either in seconds or in
hh:mm:ss[.xxx]
form.
After looking at sp_who, Oracle does not have that ability per se. Oracle has at least 8 processes running which run the db. Like RMON etc.
You can ask the DB which queries are running as that just a table query. Look at the V$ tables.
Quick Example:
SELECT sid,
opname,
sofar,
totalwork,
units,
elapsed_seconds,
time_remaining
FROM v$session_longops
WHERE sofar != totalwork;
I'd recommend you to use my Project Netroid, It's based on Volley. I have added some features to it such as multi-events callback, file download management. This could be of some help.
If you're using Angular's ng-repeat to populate the table hackel's jquery snippet will not work by placing it in the document load event. You'll need to run the snippet after angular has finished rendering the table.
To trigger an event after ng-repeat has rendered try this directive:
var app = angular.module('myapp', [])
.directive('onFinishRender', function ($timeout) {
return {
restrict: 'A',
link: function (scope, element, attr) {
if (scope.$last === true) {
$timeout(function () {
scope.$emit('ngRepeatFinished');
});
}
}
}
});
Complete example in angular: http://jsfiddle.net/ADukg/6880/
I got the directive from here: Use AngularJS just for routing purposes
That proof of concept you made was great! However I also found this jQuery plugin which seems to be working very well. Hope it helps!
As ping
works, but telnet
to port 80
does not, the HTTP port 80
is closed on your machine. I assume that your browser's HTTP connection goes through a proxy (as browsing works, how else would you read stackoverflow?).
You need to add some code to your python program, that handles the proxy, like described here:
Try this:
jsonResponse = json.loads(response.decode('utf-8'))
return; // Prematurely return from the method (same keword works in VB, by the way)
Maybe this is not the answer you needed, but I encountered similar problem, so I decided to put it here.
I needed to convert 500 xml files to UTF8 via Notepad++. Why Notepad++? When I used the option "Encode in UTF8" (many other converters use the same logic) it messed up all special characters, so I had to use "Convert to UTF8" explicitly.
Here some simple steps to convert multiple files via Notepad++ without messing up with special characters (for ex. diacritical marks).
convertToUTF8.py
import os
import sys
from Npp import notepad # import it first!
filePathSrc="C:\\Users\\" # Path to the folder with files to convert
for root, dirs, files in os.walk(filePathSrc):
for fn in files:
if fn[-4:] == '.xml': # Specify type of the files
notepad.open(root + "\\" + fn)
notepad.runMenuCommand("Encoding", "Convert to UTF-8")
# notepad.save()
# if you try to save/replace the file, an annoying confirmation window would popup.
notepad.saveAs("{}{}".format(fn[:-4], '_utf8.xml'))
notepad.close()
After all, run the script
Simply divide the Variable containing Numbers as a string by 1. PowerShell automatically convert the result to an integer.
$a = 15; $b = 2; $a + $b --> 152
But if you divide it before:
$a/1 + $b/1 --> 17
Here is more information regarding replacing ereg_replace with preg_replace
I faced similar problem on windows server 2012 STD 64 bit , my problem is resolved after updating windows with all available windows updates.
The (+) operator indicates an outer join. This means that Oracle will still return records from the other side of the join even when there is no match. For example if a and b are emp and dept and you can have employees unassigned to a department then the following statement will return details of all employees whether or not they've been assigned to a department.
select * from emp, dept where emp.dept_id=dept.dept_id(+)
So in short, removing the (+) may make a significance difference but you might not notice for a while depending on your data!
SetDate
will sets the day of the month. Using setDate
during start and end of the month,will result in wrong week
var curr = new Date("08-Jul-2014"); // get current date
var first = curr.getDate() - curr.getDay(); // First day is the day of the month - the day of the week
var last = first + 6; // last day is the first day + 6
var firstday = new Date(curr.setDate(first)); // 06-Jul-2014
var lastday = new Date(curr.setDate(last)); //12-Jul-2014
If u setting Date is 01-Jul-2014, it will show firstday as 29-Jun-2014 and lastday as 05-Jun-2014 instead of 05-Jul-2014
So overcome this issue i used
var curr = new Date();
day = curr.getDay();
firstday = new Date(curr.getTime() - 60*60*24* day*1000); //will return firstday (ie sunday) of the week
lastday = new Date(curr.getTime() + 60 * 60 *24 * 6 * 1000); //adding (60*60*6*24*1000) means adding six days to the firstday which results in lastday (saturday) of the week
NumberFormatException invoke when you ll try to convert inavlid String for eg:"abc"
value to integer..
this is valid string is eg"123"
. in your case split by space..
split(" ");
will split line by " "
by space..
Singleton classes in TypeScript are generally an anti-pattern. You can simply use namespaces instead.
class Singleton {
/* ... lots of singleton logic ... */
public someMethod() { ... }
}
// Using
var x = Singleton.getInstance();
x.someMethod();
export namespace Singleton {
export function someMethod() { ... }
}
// Usage
import { SingletonInstance } from "path/to/Singleton";
SingletonInstance.someMethod();
var x = SingletonInstance; // If you need to alias it for some reason
Alternatively, signum() can be used:
if (price.signum() == 0) {
return true;
}
I have always used keyup and e.which to catch escape key.
Solutin 1:
step:1
Right click on your project -> Close Project. it will Close your project and all opened file(s) of the project
step:2
Right click on your project -> Open Project. it will Open your project and rebuild your project, Hope fully it will fix red exclamation mark
Solution 2:
Step:1
Right click on your Project -> Properties -> Java Build Path. Can you see missing in front of your library file(s) as per following screen-shot
Step:2 Click on Add Jar to select your Jar file if it is the placed in WEB-INF/lib of your project or Add External Jar if jar file placed somewhere on your computer
Step:3 Select the old missing file(s) and click on Remove click here for image
Solutioin 3: Right click on your Project -> Properties -> Java Build Path -> JRE System Library and reconfigure the JRE
and go to your project and remove .properties and .classpath in your project directories.
backup your project data and create a new one and follow the solutions 1 & 2
On Selenium >= 3.41 (C#) the rigth syntax is:
webDriver = webDriver.SwitchTo().Frame(webDriver.FindElement(By.Name("icontent")));
In my case I was using ClassName
.
getComputedStyle( document.getElementsByClassName(this_id)) //error
It will also work without 2nd argument " "
.
Here is my complete running code :
function changeFontSize(target) {
var minmax = document.getElementById("minmax");
var computedStyle = window.getComputedStyle
? getComputedStyle(minmax) // Standards
: minmax.currentStyle; // Old IE
var fontSize;
if (computedStyle) { // This will be true on nearly all browsers
fontSize = parseFloat(computedStyle && computedStyle.fontSize);
if (target == "sizePlus") {
if(fontSize<20){
fontSize += 5;
}
} else if (target == "sizeMinus") {
if(fontSize>15){
fontSize -= 5;
}
}
minmax.style.fontSize = fontSize + "px";
}
}
onclick= "changeFontSize(this.id)"
Here is an short extension for 3 or more tables to the answer of D Stanley:
INSERT INTO other_table (name, age, sex, city, id, number, nationality)
SELECT name, age, sex, city, p.id, number, n.nationality
FROM table_1 p
INNER JOIN table_2 a ON a.id = p.id
INNER JOIN table_3 b ON b.id = p.id
...
INNER JOIN table_n x ON x.id = p.id
It doesn't work on Ubuntu 16.04, it seems that some libraries have been forgotten in the python installation package on this one. You should use package manager instead.
Uninstall matplotlib from pip then install it again with apt-get
python 2:
sudo pip uninstall matplotlib
sudo apt-get install python-matplotlib
python 3:
sudo pip3 uninstall matplotlib
sudo apt-get install python3-matplotlib
To get a date string with milliseconds (3 decimal places behind seconds), use this:
from datetime import datetime
print datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
>>>> OUTPUT >>>>
2020-05-04 10:18:32.926
Note: For Python3, print
requires parentheses:
print(datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3])
Use this method (No need to xml file)
If you want scale to quarter(half x,half y)
view.animate().scaleX(0.5f).scaleY(0.5f)
If you want scale and move to bottom right
view.animate().scaleX(0.5f).scaleY(0.5f)
.translationY((view.height/4).toFloat()).translationX((view.width/4).toFloat())
If you want move to top use (-view.height/4)
and for left (-view.width/4)
If you want do something after animation ends use withEndAction(Runnable runnable)
function.
You can use some other property like alpha and rotation
Full code
view.animate()
.scaleX(0.5f).scaleY(0.5f)//scale to quarter(half x,half y)
.translationY((view.height/4).toFloat()).translationX((view.width/4).toFloat())// move to bottom / right
.alpha(0.5f) // make it less visible
.rotation(360f) // one round turns
.setDuration(1000) // all take 1 seconds
.withEndAction(new Runnable() {
@Override
public void run() {
//animation ended
}
});
Negative numbers mean that you count from the right instead of the left. So, list[-1]
refers to the last element, list[-2]
is the second-last, and so on.
I've been stumped by this too. The "Download" button is to the far right, but you also need to be in the top folder in order to download what you're seeing. Go up as high as you can to the parent/root folder and then look for the download button.
In C# you can loop through the array printing each element. Note that System.Object defines a method ToString(). Any given type that derives from System.Object() can override that.
Returns a string that represents the current object.
http://msdn.microsoft.com/en-us/library/system.object.tostring.aspx
By default the full type name of the object will be printed, though many built-in types override that default to print a more meaningful result. You can override ToString() in your own objects to provide meaningful output.
foreach (var item in myArray)
{
Console.WriteLine(item.ToString()); // Assumes a console application
}
If you had your own class Foo, you could override ToString() like:
public class Foo
{
public override string ToString()
{
return "This is a formatted specific for the class Foo.";
}
}
Lets get array list as ArrayList
and new value as value
all you need to do is pass the parameters to .set
method.
ArrayList.set(index,value)
Ex -
ArrayList.set(10,"new value or object")
SELECT a AS current_a, COUNT(*) AS b,
(SELECT COUNT(*) FROM t WHERE a = current_a AND c = 'const' ) as d
from t group by a order by b desc
Alpine docker image doesn't have bash installed by default. You will need to add following commands to get bash
:
RUN apk update && apk add bash
If youre using Alpine 3.3+
then you can just do
RUN apk add --no-cache bash
to keep docker image size small. (Thanks to comment from @sprkysnrky)
you can also
include Rails.application.routes.url_helpers
from inside a console sessions to access the helpers:
url_for controller: :users, only_path: true
users_path
# => '/users'
or
Rails.application.routes.url_helpers.users_path
Other possible solution:
tv.setText(Integer.toString(a1)); // where a1 - int value
Things to Make sure
Download Oracle Client from Download From here
Paste it in C:\instantclient_12_1
In short \r has ASCII value 13 (CR) and \n has ASCII value 10 (LF). Mac uses CR as line delimiter (at least, it did before, I am not sure for modern macs), *nix uses LF and Windows uses both (CRLF).
Although this question has already been answered, I think this approach is better : http://jsfiddle.net/kjy112/3CvaD/ extract from this question on StackOverFlow google maps - open marker infowindow given the coordinates:
Each marker gets an "infowindow" entry :
function createMarker(lat, lon, html) {
var newmarker = new google.maps.Marker({
position: new google.maps.LatLng(lat, lon),
map: map,
title: html
});
newmarker['infowindow'] = new google.maps.InfoWindow({
content: html
});
google.maps.event.addListener(newmarker, 'mouseover', function() {
this['infowindow'].open(map, this);
});
}
For Sybase aka SQL Anywhere the following command outputs the structure of a table:
DESCRIBE 'TABLE_NAME';
For variables describing distances, you would use \newlength
(and manipulate the values with \setlength
, \addlength
, \settoheight
, \settolength
and \settodepth
).
Similarly you have access to \newcounter
for things like section and figure numbers which should increment throughout the document. I've used this one in the past to provide code samples that were numbered separatly of other figures...
Also of note is \makebox
which allows you to store a bit of laid-out document for later re-use (and for use with \settolength
...).
Ta da:
NSInteger myInteger = 42;
int myInt = (int) myInteger;
NSInteger
is nothing more than a 32/64 bit int. (it will use the appropriate size based on what OS/platform you're running)
There is also another possible source of this error. In some J2EE / web containers (in my experience under Jboss 7.x and Tomcat 7.x) You have to add each class You want to use as a hibernate Entity into the file persistence.xml as
<class>com.yourCompanyName.WhateverEntityClass</class>
In case of jboss this concerns every entity class (local - i.e. within the project You are developing or in a library). In case of Tomcat 7.x this concerns only entity classes within libraries.
1. The SQL Joins clause is used to combine records from two or more tables in a database. A JOIN is a means for combining fields from two tables by using values common to each.
2. The SQL UNION operator combines the result of two or more SELECT statements. Each SELECT statement within the UNION must have the same number of columns. The columns must also have similar data types. Also, the columns in each SELECT statement must be in the same order.
for example: table 1 customers/table 2 orders
inner join:
SELECT ID, NAME, AMOUNT, DATE
FROM CUSTOMERS?
INNER JOIN ORDERS?
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID;
union:
SELECT ID, NAME, AMOUNT, DATE
?FROM CUSTOMERS?
LEFT JOIN ORDERS?
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID
UNION
SELECT ID, NAME, AMOUNT, DATE ? FROM CUSTOMERS?
RIGHT JOIN ORDERS?
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID;
Python 3 has a different and simpler syntax for calling parent method.
If Foo
class inherits from Bar
, then from Bar.__init__
can be invoked from Foo
via super().__init__()
:
class Foo(Bar):
def __init__(self, *args, **kwargs):
# invoke Bar.__init__
super().__init__(*args, **kwargs)
__main__.py
is used for python programs in zip files. The __main__.py
file will be executed when the zip file in run. For example, if the zip file was as such:
test.zip
__main__.py
and the contents of __main__.py
was
import sys
print "hello %s" % sys.argv[1]
Then if we were to run python test.zip world
we would get hello world
out.
So the __main__.py
file run when python is called on a zip file.
As a workaround you can use the fact percent vertical padding and margin are computed from the container width. It's quite a ugly solution and I don't know if you'll be able to use it but well, it works: http://jsfiddle.net/bFWT9/
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<div>It works!</div>
</body>
</html>
html, body, div {
height: 100%;
}
body {
margin: 0;
}
div {
box-sizing: border-box;
margin-top: -75%;
padding-top: 75%;
background: #d35400;
color: #fff;
}
You could install Web Tool Platform on top of your current installation to help you learn about Java EE. Download the Web Tools Platform by using Eclipse Software Update (Instruction at http://download.eclipse.org/webtools/updates/). It has features to get you going with learning Java EE. You could learn more about Web Tools Platform at http://www.eclipse.org/webtools/
There are two ways to split strings over multiple lines:
All lines in C can be split into multiple lines using \.
Plain C:
char *my_string = "Line 1 \
Line 2";
Objective-C:
NSString *my_string = @"Line1 \
Line2";
There's a better approach that works just for strings.
Plain C:
char *my_string = "Line 1 "
"Line 2";
Objective-C:
NSString *my_string = @"Line1 "
"Line2"; // the second @ is optional
The second approach is better, because there isn't a lot of whitespace included. For a SQL query however, both are possible.
NOTE: With a #define, you have to add an extra '\' to concatenate the two strings:
Plain C:
#define kMyString "Line 1"\
"Line 2"
In Python 2.x this is not guaranteed as it is possible for True
and False
to be reassigned. However, even if this happens, boolean True and boolean False are still properly returned for comparisons.
In Python 3.x True
and False
are keywords and will always be equal to 1
and 0
.
Under normal circumstances in Python 2, and always in Python 3:
False
object is of type bool
which is a subclass of int
:
object
|
int
|
bool
It is the only reason why in your example, ['zero', 'one'][False]
does work. It would not work with an object which is not a subclass of integer, because list indexing only works with integers, or objects that define a __index__
method (thanks mark-dickinson).
Edit:
It is true of the current python version, and of that of Python 3. The docs for python 2 and the docs for Python 3 both say:
There are two types of integers: [...] Integers (int) [...] Booleans (bool)
and in the boolean subsection:
Booleans: These represent the truth values False and True [...] Boolean values behave like the values 0 and 1, respectively, in almost all contexts, the exception being that when converted to a string, the strings "False" or "True" are returned, respectively.
There is also, for Python 2:
In numeric contexts (for example when used as the argument to an arithmetic operator), they [False and True] behave like the integers 0 and 1, respectively.
So booleans are explicitly considered as integers in Python 2 and 3.
So you're safe until Python 4 comes along. ;-)
Technically @Controller
, @Service
, @Repository
are all same. All of them extends @Component
.
From the Spring source code:
Indicates that an annotated class is a "component". Such classes are considered as candidates for auto-detection when using annotation-based configuration and classpath scanning.
We can directly use @Component
for each and every bean, but for better understanding and maintainability of a large application, we use @Controller
, @Service
, @Repository
.
Purpose of each annotation:
@Controller
-> Classes annotated with this, are intended to receive a request from the client side. The first request comes to the Dispatcher Servlet, from where it passes the request to the particular controller using the value of @RequestMapping
annotation.@Service
-> Classes annotated with this, are intended to manipulate data, that we receive from the client or fetch from the database. All the manipulation with data should be done in this layer.@Repository
-> Classes annotated with this, are intended to connect with database. It can also be considered as DAO(Data Access Object) layer. This layer should be restricted to CRUD (create, retrieve, update, delete) operations only.
If any manipulation is required, data should be sent be send back to @Service layer.If we interchange their place(use @Repository
in place of @Controller
), our application will work fine.
The main purpose of using three different @annotations
is to provide better Modularity to the Enterprise application.
As far as I have understood your question, you have listed two issues.
PROBLEM 1:
You are not able to execute the Python scripts by double clicking the Python file in Windows.
REASON:
The script runs too fast to be seen by the human eye.
SOLUTION:
Add input()
in the bottom of your script and then try executing it with double click. Now the cmd will be open until you close it.
EXAMPLE:
print("Hello World")
input()
PROBLEM 2:
./
issue
SOLUTION:
Use Tab to autocomplete the filenames rather than manually typing the filename with ./
autocomplete automatically fills all this for you.
USAGE:
CD into the directory in which .py
files are present and then assume the filename is test.py
then type python te
and then press Tab, it will be automatically converted to python ./test.py
.
(Updated for 2017)
When you installed MySQL it generated a password for the root user. You can connect using
/usr/local/mysql/bin/mysql -u root -p
and type in the generated password.
Previously, the root
user in MySQL used to not have a password and could only connect from localhost. So you would connect using
/usr/local/mysql/bin/mysql -u root
Lines 45-47:
?>
<?php
That's sending a couple of newlines as output, so the headers are already dispatched. Just remove those 3 lines (it's all one big PHP block after all, no need to end PHP parsing and then start it again), as well as the similar block on lines 60-62, and it'll work.
Notice that the error message you got actually gives you a lot of information to help you find this yourself:
Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\speedycms\deleteclient.php:47) in C:\xampp\htdocs\speedycms\deleteclient.php on line 106
The two bolded sections tell you where the item is that sent output before the headers (line 47) and where the item is that was trying to send a header after output (line 106).
Do you want to insert one dictionary into the other, as one of its elements, or do you want to reference the values of one dictionary from the keys of another?
Previous answers have already covered the first case, where you are creating a dictionary within another dictionary.
To re-reference the values of one dictionary into another, you can use dict.update
:
>>> d1 = {1: [1]}
>>> d2 = {2: [2]}
>>> d1.update(d2)
>>> d1
{1: [1], 2: [2]}
A change to a value that's present in both dictionaries will be visible in both:
>>> d1[2].append('appended')
>>> d1
{1: [1], 2: [2, 'appended']}
>>> d2
{2: [2, 'appended']}
This is the same as copying the value over or making a new dictionary with it, i.e.
>>> d3 = {1: d1[1]}
>>> d3[1].append('appended from d3')
>>> d1[1]
[1, 'appended from d3']
Have you tried Tools > Formula Auditing?
You can also use Edit Site List and make it be an exception so that you can run it from the specific website.
I got the solution
SELECT
CASE status
WHEN 'VS' THEN 'validated by subsidiary'
WHEN 'NA' THEN 'not acceptable'
WHEN 'D' THEN 'delisted'
ELSE 'validated'
END AS STATUS
FROM SUPP_STATUS
This is using the CASE This is another to manipulate the selected value for more that two options.
you can use this function . Its taken from https://convertintowordpress.com/simple-jquery-table-pagination-code/
function pagination(){
var req_num_row=10;
var $tr=jQuery('tbody tr');
var total_num_row=$tr.length;
var num_pages=0;
if(total_num_row % req_num_row ==0){
num_pages=total_num_row / req_num_row;
}
if(total_num_row % req_num_row >=1){
num_pages=total_num_row / req_num_row;
num_pages++;
num_pages=Math.floor(num_pages++);
}
for(var i=1; i<=num_pages; i++){
jQuery('#pagination').append("<a href='#' class='btn'>"+i+"</a>");
}
$tr.each(function(i){
jQuery(this).hide();
if(i+1 <= req_num_row){
$tr.eq(i).show();
}
});
jQuery('#pagination a').click(function(e){
e.preventDefault();
$tr.hide();
var page=jQuery(this).text();
var temp=page-1;
var start=temp*req_num_row;
//alert(start);
for(var i=0; i< req_num_row; i++){
$tr.eq(start+i).show();
}
});
}
If you want to have a completely locked down area of your webapplication which can only be accessed by administrators from your company, then SSL authorization maybe for you. It will insure that no one can make a connection to the server instance unless they have an authorized certificate installed in their browser. Last week I wrote an article on how to setup the server: Article
This is one of the most secure setups you will find as there are no username/passwords involved so no one can gain access unless one of your users hands the key files to a potential hacker.
DBSIZE
returns the number of keys and it's easier to parse.
Downside: if a key has expired it may still count.
just indent your code correctly:
def determine_period(universe_array):
period=0
tmp=universe_array
while True:
tmp=apply_rules(tmp)#aplly_rules is a another function
period+=1
if numpy.array_equal(tmp,universe_array) is True:
return period
if period>12: #i wrote this line to stop it..but seems its doesnt work....help..
return 0
else:
return period
You need to understand that the break
statement in your example will exit the infinite loop you've created with while True
. So when the break condition is True, the program will quit the infinite loop and continue to the next indented block. Since there is no following block in your code, the function ends and don't return anything. So I've fixed your code by replacing the break
statement by a return
statement.
Following your idea to use an infinite loop, this is the best way to write it:
def determine_period(universe_array):
period=0
tmp=universe_array
while True:
tmp=apply_rules(tmp)#aplly_rules is a another function
period+=1
if numpy.array_equal(tmp,universe_array) is True:
break
if period>12: #i wrote this line to stop it..but seems its doesnt work....help..
period = 0
break
return period
No. Class variables(Also applicable to instance variables) don't exhibit overriding feature in Java as class variables are invoked on the basis of the type of calling object. Added one more class(Human) in the hierarchy to make it more clear. So now we have
Son extends Dad extends Human
In the below code, we try to iterate over an array of Human, Dad and Son objects, but it prints Human Class’s values in all cases as the type of calling object was Human.
class Human
{
static String me = "human";
public void printMe()
{
System.out.println(me);
}
}
class Dad extends Human
{
static String me = "dad";
}
class Son extends Dad
{
static String me = "son";
}
public class ClassVariables {
public static void main(String[] abc) {
Human[] humans = new Human[3];
humans[0] = new Human();
humans[1] = new Dad();
humans[2] = new Son();
for(Human human: humans) {
System.out.println(human.me); // prints human for all objects
}
}
}
Will print
So no overriding of Class variables.
If we want to access the class variable of actual object from a reference variable of its parent class, we need to explicitly tell this to compiler by casting parent reference (Human object) to its type.
System.out.println(((Dad)humans[1]).me); // prints dad
System.out.println(((Son)humans[2]).me); // prints son
Will print
On how part of this question:- As already suggested override the printMe() method in Son class, then on calling
Son().printMe();
Dad's Class variable "me" will be hidden because the nearest declaration(from Son class printme() method) of the "me"(in Son class) will get the precedence.
Wanny is correct. The &&
operator doesn't work in HTML. With Angular, you must use the double pipes (||
)for multiple conditions.
As others have pointed out, the only way to change the browser's behavior is to make sure the response either does not contain a 401 status code or if it does, not include the WWW-Authenticate: Basic
header. Since changing the status code is not very semantic and undesirable, a good approach is to remove the WWW-Authenticate
header. If you can't or don't want to modify your web server application, you can always serve or proxy it through Apache (if you are not using Apache already).
Here is a configuration for Apache to rewrite the response to remove the WWW-Authenticate header IFF the request contains contains the header X-Requested-With: XMLHttpRequest
(which is set by default by major Javascript frameworks such as JQuery/AngularJS, etc...) AND the response contains the header WWW-Authenticate: Basic
.
Tested on Apache 2.4 (not sure if it works with 2.2).
This relies on the mod_headers
module being installed.
(On Debian/Ubuntu, sudo a2enmod headers
and restart Apache)
<Location />
# Make sure that if it is an XHR request,
# we don't send back basic authentication header.
# This is to prevent the browser from displaying a basic auth login dialog.
Header unset WWW-Authenticate "expr=req('X-Requested-With') == 'XMLHttpRequest' && resp('WWW-Authenticate') =~ /^Basic/"
</Location>
just add ₹ with semicolon where ever you want to display the rupee sign it worked for me
You can iterate over a HashMap
(and many other collections) using an iterator, e.g.:
HashMap<T,U> map = new HashMap<T,U>();
...
Iterator it = map.values().iterator();
while (it.hasNext()) {
System.out.println(it.next());
}
It looks like Google actively frowns on using IP-to-location mapping:
https://developers.google.com/maps/articles/geolocation?hl=en
That article encourages using the W3C geolocation API. I was a little skeptical, but it looks like almost every major browser already supports the geolocation API:
MacOS Sierra users can find their auto-generated vanity URL by going to System Preferences > Sharing
and checking beneath the Computer Name text input. To access it, enter this URL, plus your port number (e.g. your-name.local:8000), on your iPhone over the same Wi-Fi connection as your computer.
Try this
$('document').ready(function(){
window.setTimeout('test()',time in milliseconds);
});
function test(){
$('#divid').hide();
}
This finally became a part of support v4 library, NestedScrollView. So, no longer local hacks is needed for most of cases I'd guess.
In R the equivalent function is seq
and you can use it with the option by
:
seq(from = 5, to = 100, by = 5)
# [1] 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
In addition to by
you can also have other options such as length.out
and along.with
.
length.out: If you want to get a total of 10 numbers between 0 and 1, for example:
seq(0, 1, length.out = 10)
# gives 10 equally spaced numbers from 0 to 1
along.with: It takes the length of the vector you supply as input and provides a vector from 1:length(input).
seq(along.with=c(10,20,30))
# [1] 1 2 3
Although, instead of using the along.with
option, it is recommended to use seq_along
in this case. From the documentation for ?seq
seq
is generic, and only the default method is described here. Note that it dispatches on the class of the first argument irrespective of argument names. This can have unintended consequences if it is called with just one argument intending this to be taken as along.with: it is much better to useseq_along
in that case.
seq_along: Instead of seq(along.with(.))
seq_along(c(10,20,30))
# [1] 1 2 3
Hope this helps.
Brief and Useful:
/**
* @param jsonThing can be a <code>JsonObject</code>, a <code>JsonArray</code>,
* a <code>Boolean</code>, a <code>Number</code>,
* a <code>null</code> or a <code>JSONObject.NULL</code>.
* @return <i>Appropriate Java Object</i>, that may be a <code>Map</code>, a <code>List</code>,
* a <code>Boolean</code>, a <code>Number</code> or a <code>null</code>.
*/
public static Object jsonThingToAppropriateJavaObject(Object jsonThing) throws JSONException {
if (jsonThing instanceof JSONArray) {
final ArrayList<Object> list = new ArrayList<>();
final JSONArray jsonArray = (JSONArray) jsonThing;
final int l = jsonArray.length();
for (int i = 0; i < l; ++i) list.add(jsonThingToAppropriateJavaObject(jsonArray.get(i)));
return list;
}
if (jsonThing instanceof JSONObject) {
final HashMap<String, Object> map = new HashMap<>();
final Iterator<String> keysItr = ((JSONObject) jsonThing).keys();
while (keysItr.hasNext()) {
final String key = keysItr.next();
map.put(key, jsonThingToAppropriateJavaObject(((JSONObject) jsonThing).get(key)));
}
return map;
}
if (JSONObject.NULL.equals(jsonThing)) return null;
return jsonThing;
}
Thank @Vikas Gupta.
If you are using HTML 5, there is the <audio>
element.
On MDN:
The
audio
element is used to embed sound content in an HTML or XHTML document. The audio element was added as part of HTML5.
Update:
In order to play audio in the browser in HTML versions before 5 (including XHTML), you need to use one of the many flash audio players.
As mentioned by others, this is used for front end cache busting. To implement this, I have personally find grunt-cache-bust npm package useful.
After a bit of googling, it seems that there never was a separate redistributable for Visual C++ 2003 (7.1). At least that is what a post on the microsoft forum says.
You may however be able to extract the runtime DLLs from the VC 7.1 DST timezone update.
example code:
.limited-text{_x000D_
white-space: nowrap;_x000D_
width: 400px;_x000D_
overflow: hidden;_x000D_
text-overflow: ellipsis;_x000D_
}
_x000D_
<p class="limited-text">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ut odio temporibus voluptas error distinctio hic quae corrupti vero doloribus optio! Inventore ex quaerat modi blanditiis soluta maiores illum, ab velit.</p>_x000D_
_x000D_
_x000D_
To avoid the compilation error I used
let name1:string = person.name || '';
And then validate the empty string.
Run this:
Rails.application.eager_load!
Then
ActiveRecord::Base.descendants
To return a list of models/tables
You can also run a down migration like so:
rake db:migrate:down VERSION=versionnumber
Refer to the Ruby on Rails guide on migrations for more info.
well, I have spent some time on your date format.....
however, finally i worked it out..
let's take an example file (named logFile), i made it a bit short. say, you want to get last 5 mins' log in this file:
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
### lines below are what you want (5 mins till the last record)
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
here is the solution:
# this variable you could customize, important is convert to seconds.
# e.g 5days=$((5*24*3600))
x=$((5*60)) #here we take 5 mins as example
# this line get the timestamp in seconds of last line of your logfile
last=$(tail -n1 logFile|awk -F'[][]' '{ gsub(/\//," ",$2); sub(/:/," ",$2); "date +%s -d \""$2"\""|getline d; print d;}' )
#this awk will give you lines you needs:
awk -F'[][]' -v last=$last -v x=$x '{ gsub(/\//," ",$2); sub(/:/," ",$2); "date +%s -d \""$2"\""|getline d; if (last-d<=x)print $0 }' logFile
output:
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
EDIT
you may notice that in the output the [ and ] are disappeared. If you do want them back, you can change the last awk line print $0
-> print $1 "[" $2 "]" $3
Please see Why does the property I want to mock need to be virtual?
You may have to write a wrapper interface or mark the property as virtual/abstract as Moq creates a proxy class that it uses to intercept calls and return your custom values that you put in the .Returns(x)
call.
Use this instead:
string objTextBox = t.Text;
The object t
is the TextBox
. The object you call objTextBox
is assigned the ID
property of the TextBox
.
So better code would be:
TextBox objTextBox = (TextBox)sender;
string theText = objTextBox.Text;
I'm not sure if you can turn it off, but you can change the colors of it :)
myDiv::selection,
myDiv::-moz-selection,
myDiv::-webkit-selection {
background:#000;
color:#fff;
}
Then just match the colors to your "darky" design and see what happens :)
Well, as the error says, you have an expression (((t[1])/length) * t[1]
) on the left side of the assignment, rather than a variable name. You have that expression, and then you tell Python to add string
to it (which is always ""
) and assign it to... where? ((t[1])/length) * t[1]
isn't a variable name, so you can't store the result into it.
Did you mean string += ((t[1])/length) * t[1]
? That would make more sense. Of course, you're still trying to add a number to a string, or multiply by a string... one of those t[1]
s should probably be a t[0]
.
This is the only comprehensive and reliable way I've found to do this.
Assume you want to merge "tag_1.0" into "mybranch".
$git checkout tag_1.0 (will create a headless branch)
$git branch -D tagbranch (make sure this branch doesn't already exist locally)
$git checkout -b tagbranch
$git merge -s ours mybranch
$git commit -am "updated mybranch with tag_1.0"
$git checkout mybranch
$git merge tagbranch
The following may be useful since I got here looking for a slightly different solution. My script needed to automatically loop through input elements and had to return their values (for jQuery.post() function), the problem was with checkboxes returning their values regardless of checked status. This was my solution:
jQuery.fn.input_val = function(){
if(jQuery(this).is("input[type=checkbox]")) {
if(jQuery(this).is(":checked")) {
return jQuery(this).val();
} else {
return false;
}
} else {
return jQuery(this).val();
}
};
Usage:
jQuery(".element").input_val();
If the given input field is a checkbox, the input_val function only returns a value if its checked. For all other elements, the value is returned regardless of checked status.
If you give GCC the flag -fverbose-asm
, it will
Put extra commentary information in the generated assembly code to make it more readable.
[...] The added comments include:
- information on the compiler version and command-line options,
- the source code lines associated with the assembly instructions, in the form FILENAME:LINENUMBER:CONTENT OF LINE,
- hints on which high-level expressions correspond to the various assembly instruction operands.
I feel like this has been well covered, maybe except for the following:
Simple KEY
/ INDEX
(or otherwise called SECONDARY INDEX
) do increase performance if selectivity is sufficient. On this matter, the usual recommendation is that if the amount of records in the result set on which an index is applied exceeds 20% of the total amount of records of the parent table, then the index will be ineffective. In practice each architecture will differ but, the idea is still correct.
Secondary Indexes (and that is very specific to mysql) should not be seen as completely separate and different objects from the primary key. In fact, both should be used jointly and, once this information known, provide an additional tool to the mysql DBA: in Mysql, indexes embed the primary key. It leads to significant performance improvements, specifically when cleverly building implicit covering indexes such as described there.
If you feel like your data should be UNIQUE
, use a unique index. You may think it's optional (for instance, working it out at application level) and that a normal index will do, but it actually represents a guarantee for Mysql that each row is unique, which incidentally provides a performance benefit.
You can only use FULLTEXT
(or otherwise called SEARCH INDEX
) with Innodb (In MySQL 5.6.4 and up) and Myisam Engines
You can only use FULLTEXT
on CHAR
, VARCHAR
and TEXT
column types
FULLTEXT
index involves a LOT more than just creating an index. There's a bunch of system tables created, a completely separate caching system and some specific rules and optimizations applied. See http://dev.mysql.com/doc/refman/5.7/en/fulltext-restrictions.html and http://dev.mysql.com/doc/refman/5.7/en/innodb-fulltext-index.html
This is easily extendable and readable:
switch (foo) {
case 1:
case 3:
case 12:
// ...
break
case 4:
case 5:
case 6:
// something else
break
}
But not necessarily easier :)
During some work with an auto-focus lens, I came across this very useful set of algorithms for detecting image focus. It's implemented in MATLAB, but most of the functions are quite easy to port to OpenCV with filter2D.
It's basically a survey implementation of many focus measurement algorithms. If you want to read the original papers, references to the authors of the algorithms are provided in the code. The 2012 paper by Pertuz, et al. Analysis of focus measure operators for shape from focus (SFF) gives a great review of all of these measure as well as their performance (both in terms of speed and accuracy as applied to SFF).
EDIT: Added MATLAB code just in case the link dies.
function FM = fmeasure(Image, Measure, ROI)
%This function measures the relative degree of focus of
%an image. It may be invoked as:
%
% FM = fmeasure(Image, Method, ROI)
%
%Where
% Image, is a grayscale image and FM is the computed
% focus value.
% Method, is the focus measure algorithm as a string.
% see 'operators.txt' for a list of focus
% measure methods.
% ROI, Image ROI as a rectangle [xo yo width heigth].
% if an empty argument is passed, the whole
% image is processed.
%
% Said Pertuz
% Abr/2010
if ~isempty(ROI)
Image = imcrop(Image, ROI);
end
WSize = 15; % Size of local window (only some operators)
switch upper(Measure)
case 'ACMO' % Absolute Central Moment (Shirvaikar2004)
if ~isinteger(Image), Image = im2uint8(Image);
end
FM = AcMomentum(Image);
case 'BREN' % Brenner's (Santos97)
[M N] = size(Image);
DH = Image;
DV = Image;
DH(1:M-2,:) = diff(Image,2,1);
DV(:,1:N-2) = diff(Image,2,2);
FM = max(DH, DV);
FM = FM.^2;
FM = mean2(FM);
case 'CONT' % Image contrast (Nanda2001)
ImContrast = inline('sum(abs(x(:)-x(5)))');
FM = nlfilter(Image, [3 3], ImContrast);
FM = mean2(FM);
case 'CURV' % Image Curvature (Helmli2001)
if ~isinteger(Image), Image = im2uint8(Image);
end
M1 = [-1 0 1;-1 0 1;-1 0 1];
M2 = [1 0 1;1 0 1;1 0 1];
P0 = imfilter(Image, M1, 'replicate', 'conv')/6;
P1 = imfilter(Image, M1', 'replicate', 'conv')/6;
P2 = 3*imfilter(Image, M2, 'replicate', 'conv')/10 ...
-imfilter(Image, M2', 'replicate', 'conv')/5;
P3 = -imfilter(Image, M2, 'replicate', 'conv')/5 ...
+3*imfilter(Image, M2, 'replicate', 'conv')/10;
FM = abs(P0) + abs(P1) + abs(P2) + abs(P3);
FM = mean2(FM);
case 'DCTE' % DCT energy ratio (Shen2006)
FM = nlfilter(Image, [8 8], @DctRatio);
FM = mean2(FM);
case 'DCTR' % DCT reduced energy ratio (Lee2009)
FM = nlfilter(Image, [8 8], @ReRatio);
FM = mean2(FM);
case 'GDER' % Gaussian derivative (Geusebroek2000)
N = floor(WSize/2);
sig = N/2.5;
[x,y] = meshgrid(-N:N, -N:N);
G = exp(-(x.^2+y.^2)/(2*sig^2))/(2*pi*sig);
Gx = -x.*G/(sig^2);Gx = Gx/sum(Gx(:));
Gy = -y.*G/(sig^2);Gy = Gy/sum(Gy(:));
Rx = imfilter(double(Image), Gx, 'conv', 'replicate');
Ry = imfilter(double(Image), Gy, 'conv', 'replicate');
FM = Rx.^2+Ry.^2;
FM = mean2(FM);
case 'GLVA' % Graylevel variance (Krotkov86)
FM = std2(Image);
case 'GLLV' %Graylevel local variance (Pech2000)
LVar = stdfilt(Image, ones(WSize,WSize)).^2;
FM = std2(LVar)^2;
case 'GLVN' % Normalized GLV (Santos97)
FM = std2(Image)^2/mean2(Image);
case 'GRAE' % Energy of gradient (Subbarao92a)
Ix = Image;
Iy = Image;
Iy(1:end-1,:) = diff(Image, 1, 1);
Ix(:,1:end-1) = diff(Image, 1, 2);
FM = Ix.^2 + Iy.^2;
FM = mean2(FM);
case 'GRAT' % Thresholded gradient (Snatos97)
Th = 0; %Threshold
Ix = Image;
Iy = Image;
Iy(1:end-1,:) = diff(Image, 1, 1);
Ix(:,1:end-1) = diff(Image, 1, 2);
FM = max(abs(Ix), abs(Iy));
FM(FM<Th)=0;
FM = sum(FM(:))/sum(sum(FM~=0));
case 'GRAS' % Squared gradient (Eskicioglu95)
Ix = diff(Image, 1, 2);
FM = Ix.^2;
FM = mean2(FM);
case 'HELM' %Helmli's mean method (Helmli2001)
MEANF = fspecial('average',[WSize WSize]);
U = imfilter(Image, MEANF, 'replicate');
R1 = U./Image;
R1(Image==0)=1;
index = (U>Image);
FM = 1./R1;
FM(index) = R1(index);
FM = mean2(FM);
case 'HISE' % Histogram entropy (Krotkov86)
FM = entropy(Image);
case 'HISR' % Histogram range (Firestone91)
FM = max(Image(:))-min(Image(:));
case 'LAPE' % Energy of laplacian (Subbarao92a)
LAP = fspecial('laplacian');
FM = imfilter(Image, LAP, 'replicate', 'conv');
FM = mean2(FM.^2);
case 'LAPM' % Modified Laplacian (Nayar89)
M = [-1 2 -1];
Lx = imfilter(Image, M, 'replicate', 'conv');
Ly = imfilter(Image, M', 'replicate', 'conv');
FM = abs(Lx) + abs(Ly);
FM = mean2(FM);
case 'LAPV' % Variance of laplacian (Pech2000)
LAP = fspecial('laplacian');
ILAP = imfilter(Image, LAP, 'replicate', 'conv');
FM = std2(ILAP)^2;
case 'LAPD' % Diagonal laplacian (Thelen2009)
M1 = [-1 2 -1];
M2 = [0 0 -1;0 2 0;-1 0 0]/sqrt(2);
M3 = [-1 0 0;0 2 0;0 0 -1]/sqrt(2);
F1 = imfilter(Image, M1, 'replicate', 'conv');
F2 = imfilter(Image, M2, 'replicate', 'conv');
F3 = imfilter(Image, M3, 'replicate', 'conv');
F4 = imfilter(Image, M1', 'replicate', 'conv');
FM = abs(F1) + abs(F2) + abs(F3) + abs(F4);
FM = mean2(FM);
case 'SFIL' %Steerable filters (Minhas2009)
% Angles = [0 45 90 135 180 225 270 315];
N = floor(WSize/2);
sig = N/2.5;
[x,y] = meshgrid(-N:N, -N:N);
G = exp(-(x.^2+y.^2)/(2*sig^2))/(2*pi*sig);
Gx = -x.*G/(sig^2);Gx = Gx/sum(Gx(:));
Gy = -y.*G/(sig^2);Gy = Gy/sum(Gy(:));
R(:,:,1) = imfilter(double(Image), Gx, 'conv', 'replicate');
R(:,:,2) = imfilter(double(Image), Gy, 'conv', 'replicate');
R(:,:,3) = cosd(45)*R(:,:,1)+sind(45)*R(:,:,2);
R(:,:,4) = cosd(135)*R(:,:,1)+sind(135)*R(:,:,2);
R(:,:,5) = cosd(180)*R(:,:,1)+sind(180)*R(:,:,2);
R(:,:,6) = cosd(225)*R(:,:,1)+sind(225)*R(:,:,2);
R(:,:,7) = cosd(270)*R(:,:,1)+sind(270)*R(:,:,2);
R(:,:,7) = cosd(315)*R(:,:,1)+sind(315)*R(:,:,2);
FM = max(R,[],3);
FM = mean2(FM);
case 'SFRQ' % Spatial frequency (Eskicioglu95)
Ix = Image;
Iy = Image;
Ix(:,1:end-1) = diff(Image, 1, 2);
Iy(1:end-1,:) = diff(Image, 1, 1);
FM = mean2(sqrt(double(Iy.^2+Ix.^2)));
case 'TENG'% Tenengrad (Krotkov86)
Sx = fspecial('sobel');
Gx = imfilter(double(Image), Sx, 'replicate', 'conv');
Gy = imfilter(double(Image), Sx', 'replicate', 'conv');
FM = Gx.^2 + Gy.^2;
FM = mean2(FM);
case 'TENV' % Tenengrad variance (Pech2000)
Sx = fspecial('sobel');
Gx = imfilter(double(Image), Sx, 'replicate', 'conv');
Gy = imfilter(double(Image), Sx', 'replicate', 'conv');
G = Gx.^2 + Gy.^2;
FM = std2(G)^2;
case 'VOLA' % Vollath's correlation (Santos97)
Image = double(Image);
I1 = Image; I1(1:end-1,:) = Image(2:end,:);
I2 = Image; I2(1:end-2,:) = Image(3:end,:);
Image = Image.*(I1-I2);
FM = mean2(Image);
case 'WAVS' %Sum of Wavelet coeffs (Yang2003)
[C,S] = wavedec2(Image, 1, 'db6');
H = wrcoef2('h', C, S, 'db6', 1);
V = wrcoef2('v', C, S, 'db6', 1);
D = wrcoef2('d', C, S, 'db6', 1);
FM = abs(H) + abs(V) + abs(D);
FM = mean2(FM);
case 'WAVV' %Variance of Wav...(Yang2003)
[C,S] = wavedec2(Image, 1, 'db6');
H = abs(wrcoef2('h', C, S, 'db6', 1));
V = abs(wrcoef2('v', C, S, 'db6', 1));
D = abs(wrcoef2('d', C, S, 'db6', 1));
FM = std2(H)^2+std2(V)+std2(D);
case 'WAVR'
[C,S] = wavedec2(Image, 3, 'db6');
H = abs(wrcoef2('h', C, S, 'db6', 1));
V = abs(wrcoef2('v', C, S, 'db6', 1));
D = abs(wrcoef2('d', C, S, 'db6', 1));
A1 = abs(wrcoef2('a', C, S, 'db6', 1));
A2 = abs(wrcoef2('a', C, S, 'db6', 2));
A3 = abs(wrcoef2('a', C, S, 'db6', 3));
A = A1 + A2 + A3;
WH = H.^2 + V.^2 + D.^2;
WH = mean2(WH);
WL = mean2(A);
FM = WH/WL;
otherwise
error('Unknown measure %s',upper(Measure))
end
end
%************************************************************************
function fm = AcMomentum(Image)
[M N] = size(Image);
Hist = imhist(Image)/(M*N);
Hist = abs((0:255)-255*mean2(Image))'.*Hist;
fm = sum(Hist);
end
%******************************************************************
function fm = DctRatio(M)
MT = dct2(M).^2;
fm = (sum(MT(:))-MT(1,1))/MT(1,1);
end
%************************************************************************
function fm = ReRatio(M)
M = dct2(M);
fm = (M(1,2)^2+M(1,3)^2+M(2,1)^2+M(2,2)^2+M(3,1)^2)/(M(1,1)^2);
end
%******************************************************************
A few examples of OpenCV versions:
// OpenCV port of 'LAPM' algorithm (Nayar89)
double modifiedLaplacian(const cv::Mat& src)
{
cv::Mat M = (Mat_<double>(3, 1) << -1, 2, -1);
cv::Mat G = cv::getGaussianKernel(3, -1, CV_64F);
cv::Mat Lx;
cv::sepFilter2D(src, Lx, CV_64F, M, G);
cv::Mat Ly;
cv::sepFilter2D(src, Ly, CV_64F, G, M);
cv::Mat FM = cv::abs(Lx) + cv::abs(Ly);
double focusMeasure = cv::mean(FM).val[0];
return focusMeasure;
}
// OpenCV port of 'LAPV' algorithm (Pech2000)
double varianceOfLaplacian(const cv::Mat& src)
{
cv::Mat lap;
cv::Laplacian(src, lap, CV_64F);
cv::Scalar mu, sigma;
cv::meanStdDev(lap, mu, sigma);
double focusMeasure = sigma.val[0]*sigma.val[0];
return focusMeasure;
}
// OpenCV port of 'TENG' algorithm (Krotkov86)
double tenengrad(const cv::Mat& src, int ksize)
{
cv::Mat Gx, Gy;
cv::Sobel(src, Gx, CV_64F, 1, 0, ksize);
cv::Sobel(src, Gy, CV_64F, 0, 1, ksize);
cv::Mat FM = Gx.mul(Gx) + Gy.mul(Gy);
double focusMeasure = cv::mean(FM).val[0];
return focusMeasure;
}
// OpenCV port of 'GLVN' algorithm (Santos97)
double normalizedGraylevelVariance(const cv::Mat& src)
{
cv::Scalar mu, sigma;
cv::meanStdDev(src, mu, sigma);
double focusMeasure = (sigma.val[0]*sigma.val[0]) / mu.val[0];
return focusMeasure;
}
No guarantees on whether or not these measures are the best choice for your problem, but if you track down the papers associated with these measures, they may give you more insight. Hope you find the code useful! I know I did.
/
means the root of the current drive;
./
means the current directory;
../
means the parent of the current directory.
You should consider creating a timestamp from that date witk mktime()
eg:
$date = explode('/', $_POST['date']);
$time = mktime(0,0,0,$date[0],$date[1],$date[2]);
$mysqldate = date( 'Y-m-d H:i:s', $time );
I've implemented a different method to check for primes because:
Here is my implementation:
public static BigInteger IntegerSquareRoot(BigInteger value)
{
if (value > 0)
{
int bitLength = value.ToByteArray().Length * 8;
BigInteger root = BigInteger.One << (bitLength / 2);
while (!IsSquareRoot(value, root))
{
root += value / root;
root /= 2;
}
return root;
}
else return 0;
}
private static Boolean IsSquareRoot(BigInteger n, BigInteger root)
{
BigInteger lowerBound = root * root;
BigInteger upperBound = (root + 1) * (root + 1);
return (n >= lowerBound && n < upperBound);
}
static bool IsPrime(BigInteger value)
{
Console.WriteLine("Checking if {0} is a prime number.", value);
if (value < 3)
{
if (value == 2)
{
Console.WriteLine("{0} is a prime number.", value);
return true;
}
else
{
Console.WriteLine("{0} is not a prime number because it is below 2.", value);
return false;
}
}
else
{
if (value % 2 == 0)
{
Console.WriteLine("{0} is not a prime number because it is divisible by 2.", value);
return false;
}
else if (value == 5)
{
Console.WriteLine("{0} is a prime number.", value);
return true;
}
else if (value % 5 == 0)
{
Console.WriteLine("{0} is not a prime number because it is divisible by 5.", value);
return false;
}
else
{
// The only way this number is a prime number at this point is if it is divisible by numbers ending with 1, 3, 7, and 9.
AutoResetEvent success = new AutoResetEvent(false);
AutoResetEvent failure = new AutoResetEvent(false);
AutoResetEvent onesSucceeded = new AutoResetEvent(false);
AutoResetEvent threesSucceeded = new AutoResetEvent(false);
AutoResetEvent sevensSucceeded = new AutoResetEvent(false);
AutoResetEvent ninesSucceeded = new AutoResetEvent(false);
BigInteger squareRootedValue = IntegerSquareRoot(value);
Thread ones = new Thread(() =>
{
for (BigInteger i = 11; i <= squareRootedValue; i += 10)
{
if (value % i == 0)
{
Console.WriteLine("{0} is not a prime number because it is divisible by {1}.", value, i);
failure.Set();
}
}
onesSucceeded.Set();
});
ones.Start();
Thread threes = new Thread(() =>
{
for (BigInteger i = 3; i <= squareRootedValue; i += 10)
{
if (value % i == 0)
{
Console.WriteLine("{0} is not a prime number because it is divisible by {1}.", value, i);
failure.Set();
}
}
threesSucceeded.Set();
});
threes.Start();
Thread sevens = new Thread(() =>
{
for (BigInteger i = 7; i <= squareRootedValue; i += 10)
{
if (value % i == 0)
{
Console.WriteLine("{0} is not a prime number because it is divisible by {1}.", value, i);
failure.Set();
}
}
sevensSucceeded.Set();
});
sevens.Start();
Thread nines = new Thread(() =>
{
for (BigInteger i = 9; i <= squareRootedValue; i += 10)
{
if (value % i == 0)
{
Console.WriteLine("{0} is not a prime number because it is divisible by {1}.", value, i);
failure.Set();
}
}
ninesSucceeded.Set();
});
nines.Start();
Thread successWaiter = new Thread(() =>
{
AutoResetEvent.WaitAll(new WaitHandle[] { onesSucceeded, threesSucceeded, sevensSucceeded, ninesSucceeded });
success.Set();
});
successWaiter.Start();
int result = AutoResetEvent.WaitAny(new WaitHandle[] { success, failure });
try
{
successWaiter.Abort();
}
catch { }
try
{
ones.Abort();
}
catch { }
try
{
threes.Abort();
}
catch { }
try
{
sevens.Abort();
}
catch { }
try
{
nines.Abort();
}
catch { }
if (result == 1)
{
return false;
}
else
{
Console.WriteLine("{0} is a prime number.", value);
return true;
}
}
}
}
Update: If you want to implement a solution with trial division more rapidly, you might consider having a cache of prime numbers. A number is only prime if it is not divisible by other prime numbers that are up to the value of its square root. Other than that, you might consider using the probabilistic version of the Miller-Rabin primality test to check for a number's primality if you are dealing with large enough values (taken from Rosetta Code in case the site ever goes down):
// Miller-Rabin primality test as an extension method on the BigInteger type.
// Based on the Ruby implementation on this page.
public static class BigIntegerExtensions
{
public static bool IsProbablePrime(this BigInteger source, int certainty)
{
if(source == 2 || source == 3)
return true;
if(source < 2 || source % 2 == 0)
return false;
BigInteger d = source - 1;
int s = 0;
while(d % 2 == 0)
{
d /= 2;
s += 1;
}
// There is no built-in method for generating random BigInteger values.
// Instead, random BigIntegers are constructed from randomly generated
// byte arrays of the same length as the source.
RandomNumberGenerator rng = RandomNumberGenerator.Create();
byte[] bytes = new byte[source.ToByteArray().LongLength];
BigInteger a;
for(int i = 0; i < certainty; i++)
{
do
{
// This may raise an exception in Mono 2.10.8 and earlier.
// http://bugzilla.xamarin.com/show_bug.cgi?id=2761
rng.GetBytes(bytes);
a = new BigInteger(bytes);
}
while(a < 2 || a >= source - 2);
BigInteger x = BigInteger.ModPow(a, d, source);
if(x == 1 || x == source - 1)
continue;
for(int r = 1; r < s; r++)
{
x = BigInteger.ModPow(x, 2, source);
if(x == 1)
return false;
if(x == source - 1)
break;
}
if(x != source - 1)
return false;
}
return true;
}
}
You can use the spool
command (SQL*Plus documentation, but one of many such commands SQL Developer also supports) to write results straight to disk. Each spool
can change the file that's being written to, so you can have several queries writing to different files just by putting spool
commands between them:
spool "\path\to\spool1.txt"
select /*csv*/ * from employees;
spool "\path\to\spool2.txt"
select /*csv*/ * from locations;
spool off;
You'd need to run this as a script (F5, or the second button on the command bar above the SQL Worksheet). You might also want to explore some of the formatting options and the set
command, though some of those do not translate to SQL Developer.
Since you mentioned CSV in the title I've included a SQL Developer-specific hint that does that formatting for you.
A downside though is that SQL Developer includes the query in the spool file, which you can avoid by having the commands and queries in a script file that you then run as a script.
Without enumerate()
:
>>> mylist = ["aa123", "bb2322", "aa354", "cc332", "ab334", "333aa"]
>>> l = [mylist.index(i) for i in mylist if 'aa' in i]
>>> l
[0, 2, 5]
There's no reason to use es6 features to escape for
looping if you're on IE9 or above.
In ES5, there are two good options. First, you can "borrow" Array
's forEach
as evan mentions.
But even better...
Object.keys()
, which does have forEach
and filters to "own properties" automatically.That is, Object.keys
is essentially equivalent to doing a for... in
with a HasOwnProperty
, but is much smoother.
var eventNodes = document.getElementsByClassName("events");
Object.keys(eventNodes).forEach(function (key) {
console.log(eventNodes[key].id);
});
What worked for me (on Windows, using git version 1.8.3.msysgit.0):
git submodule init
and git submodule update
After doing all that, everything is in the state I would expect. I imagine other users of the repository will have similar pain when they come to update though - it would be wise to explain these steps in your commit message!
Putting the model dot property in strings worked for me: ModelState.AddModelError("Item1.Month", "This is not a valid date");
msbuild "C:\path to solution\project.sln"
Use the <sup></sup>
tag (<sub></sub>
is the equivalent for subscripts). See this gist for an example.
After reading the answers here I think I can provide a new point of view: if the purpose of this question is to know if the path to a certain executable file exists in %PATH%
and if not, insert it (and this is the only reason to do that, I think), then it may solved in a slightly different way: "How to check if the directory of a certain executable program exist in %PATH%"? This question may be easily solved this way:
for %%p in (programname.exe) do set "progpath=%%~$PATH:p"
if not defined progpath (
rem The path to programname.exe don't exist in PATH variable, insert it:
set "PATH=%PATH%;C:\path\to\progranname"
)
If you don't know the extension of the executable file, just review all of them:
set "progpath="
for %%e in (%PATHEXT%) do (
if not defined progpath (
for %%p in (programname.%%e) do set "progpath=%%~$PATH:p"
)
)
As stated, inside the default constructor there is an implicit super() called on the first line of the constructor.
This super() automatically calls a chain of constructors starting at the top of the class hierarchy and moves down the hierarchy .
If there were more than two classes in the class hierarchy of the program, the top class default constructor would get called first.
Here is an example of this:
class A {
A() {
System.out.println("Constructor A");
}
}
class B extends A{
public B() {
System.out.println("Constructor B");
}
}
class C extends B{
public C() {
System.out.println("Constructor C");
}
public static void main(String[] args) {
C c1 = new C();
}
}
The above would output:
Constructor A
Constructor B
Constructor C
This could also occur if you refer to a variable in the data.frame that doesn't exist. For example, recently I forgot to tell ddply to summarize by one of my variables that I used in geom_line to specify line color. Then, ggplot didn't know where to find the variable I hadn't created in the summary table, and I got this error.
I sorted this problem as verifying the json from JSONLint.com and then, correcting it. And this is code for the same.
String jsonStr = "[{\r\n" + "\"name\":\"New York\",\r\n" + "\"number\": \"732921\",\r\n"+ "\"center\": {\r\n" + "\"latitude\": 38.895111,\r\n" + " \"longitude\": -77.036667\r\n" + "}\r\n" + "},\r\n" + " {\r\n"+ "\"name\": \"San Francisco\",\r\n" +\"number\":\"298732\",\r\n"+ "\"center\": {\r\n" + " \"latitude\": 37.783333,\r\n"+ "\"longitude\": -122.416667\r\n" + "}\r\n" + "}\r\n" + "]";
ObjectMapper mapper = new ObjectMapper();
MyPojo[] jsonObj = mapper.readValue(jsonStr, MyPojo[].class);
for (MyPojo itr : jsonObj) {
System.out.println("Val of name is: " + itr.getName());
System.out.println("Val of number is: " + itr.getNumber());
System.out.println("Val of latitude is: " +
itr.getCenter().getLatitude());
System.out.println("Val of longitude is: " +
itr.getCenter().getLongitude() + "\n");
}
Note: MyPojo[].class
is the class having getter and setter of json properties.
Result:
Val of name is: New York
Val of number is: 732921
Val of latitude is: 38.895111
Val of longitude is: -77.036667
Val of name is: San Francisco
Val of number is: 298732
Val of latitude is: 37.783333
Val of longitude is: -122.416667
I made this approach based on mjaggard answer:
public static void toastAnywhere(final String text) {
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
public void run() {
Toast.makeText(SuperApplication.getInstance().getApplicationContext(), text,
Toast.LENGTH_LONG).show();
}
});
}
Worked well for me.
If you are using Pycharm then this is the virtual environment issue.
So, at the time of creating your Python project you will have to select "Existing interpreter" option -> click "system Interpreter" -> select the correct option for example "*\AppData\Local\Programs\Python\Python3.6\python.exe".
You can use 'New Virtual Env' as well, but I have just given the quick fix that should work for Pycharm users.
Six years on, this is still at the top for some searches. Things have changed a lot since then. Now the defacto standard is more or less to use Volley and the NetworkImageView which takes care of the heavy lifting for you.
Assuming that you already have your Apaters, Loaders and ListFragments setup properly, this official google tutorial explains how to use NetworkImageView to load the images. Images are automatically loaded in a background thread and the view updated on the UI thread. It even supports caching.
array.join
was not recognizing ";" how a separator, but replacing it with comma. Using jQuery, you can use $.each
to implode an array (Note that output_saved_json is the array and tmp is the string that will store the imploded array):
var tmp = "";
$.each(output_saved_json, function(index,value) {
tmp = tmp + output_saved_json[index] + ";";
});
output_saved_json = tmp.substring(0,tmp.length - 1); // remove last ";" added
I have used substring to remove last ";" added at the final without necessity.
But if you prefer, you can use instead substring
something like:
var tmp = "";
$.each(output_saved_json, function(index,value) {
tmp = tmp + output_saved_json[index];
if((index + 1) != output_saved_json.length) {
tmp = tmp + ";";
}
});
output_saved_json = tmp;
I think this last solution is more slower than the 1st one because it needs to check if index is different than the lenght of array every time while $.each
do not end.
You can use for Debian/Ubuntu:
dpkg -l|grep kafka
Expected result should to be like:
ii confluent-kafka-2.11 0.11.0.1-1 all publish-subscribe messaging rethought as a distributed commit log
ii confluent-kafka-connect-elasticsearch 3.3.1-1 all Kafka Connect connector for copying data between Kafka and Elasticsearch
ii confluent-kafka-connect-hdfs 3.3.1-1 all Kafka Connect connector for copying data between Kafka and Hadoop HDFS
ii confluent-kafka-connect-jdbc 3.3.1-1 all Kafka Connect connector for JDBC-compatible databases
ii confluent-kafka-connect-replicator 3.3.1-1 all Kafka Connect connector for replicating topics between Kafka clusters
ii confluent-kafka-connect-s3 3.3.1-1 all Kafka Connect S3 connector for copying data between Kafka and
ii confluent-kafka-connect-storage-common 3.3.1-1 all Kafka Connect Storage Common contains packages used by storage
ii confluent-kafka-rest 3.3.1-1 all A REST proxy for Kafka
Since you mentioned Task Manager, I'll guess you're using Windows. Assuming you're running your script within the editor, if you aren't opposed to quitting the editor at the same time as quitting the running program, the keyboard shortcut to end a process is:
Alt + F4
(By which I mean press the 'Alt' and 'F4' keys on your keyboard simultaneously.)
Alternatively, as mentioned in other answers,
Ctrl + C
should also work, but will not quit the editor.
I got the same error 'System.Windows.Forms.MessageBox' is a 'type' but is used like a 'variable', even if using:
MessageBox.Show("Hello, World!");
I guess my initial attempts with invalid syntax caused some kind of bug and I ended up fixing it by adding a space between "MessageBox.Show" and the brackets ():
MessageBox.Show ("Hello, World!");
Now using the original syntax without the extra space works again:
MessageBox.Show("Hello, World!");
A simple solution:
using (Form2 f2 = new Form2())
{
f2.Show();
f2.Update();
System.Threading.Thread.Sleep(2500);
} // f2 is closed and disposed here
And then substitute your Loading for the Sleep.
This blocks the UI thread, on purpose.
It might also be worth mentioning that inline will try to open Office Documents (xls, doc etc) directly from the server, which might lead to a User Credentials Prompt.
see this link:
http://forums.asp.net/t/1885657.aspx/1?Access+the+SSRS+Report+in+excel+format+on+server
somebody tried to deliver an Excel Report from SSRS via ASP.Net -> the user always got prompted to enter the credentials. After clicking cancel on the prompt it would be opened anyway...
If the Content Disposition is marked as Attachment it will automatically be saved to the temp folder after clicking open and then opened in Excel from the local copy.
Now I solved this issue in this way,
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.OutputStream;
// Create a trust manager that does not validate certificate chains like the default
TrustManager[] trustAllCerts = new TrustManager[]{
new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers()
{
return null;
}
public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
{
//No need to implement.
}
public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
{
//No need to implement.
}
}
};
// Install the all-trusting trust manager
try
{
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
}
catch (Exception e)
{
System.out.println(e);
}
Of course this solution should only be used in scenarios, where it is not possible to install the required certifcates using keytool
e.g. local testing with temporary certifcates.
1 select ename as name, 2 sal as salary, 3 dept,deptno, 4 from (TABLE_NAME or SUBQUERY) 5 emp, emp2, dept 6 where 7 emp.deptno = dept.deptno and 8 emp2.deptno = emp.deptno 9* order by dept.dname from (TABLE_NAME or SUBQUERY) * ERROR at line 4: ORA-00936: missing expression` select ename as name, sal as salary, dept,deptno, from (TABLE_NAME or SUBQUERY) emp, emp2, dept where emp.deptno = dept.deptno and emp2.deptno = emp.deptno order by dept.dname`
file_name=test.log
# set first K lines:
K=1000
# line count (N):
N=$(wc -l < $file_name)
# length of the bottom file:
L=$(( $N - $K ))
# create the top of file:
head -n $K $file_name > top_$file_name
# create bottom of file:
tail -n $L $file_name > bottom_$file_name
Also, on second thought, split will work in your case, since the first split is larger than the second. Split puts the balance of the input into the last split, so
split -l 300000 file_name
will output xaa
with 300k lines and xab
with 100k lines, for an input with 400k lines.
Try installing sqlite like this if you are using FreeBSD.
pkg install py27-sqlite3-2.7.10_6
If you have customized navigation controller, you can use above code snippet. So in my case, I've used as following code pieces.
Swift 3.0, XCode 8.1 version
navigationController.navigationBar.barTintColor = UIColor.green
Navigation Bar Text:
navigationController.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.orange]
It is very helpful talks.
From my origin country the currency format is like "3.050,89 €"
parseFloat identifies the dot as the decimal separator, to add 2 values we could put it like these:
parseFloat(element.toString().replace(/\./g,'').replace(',', '.'))
Series is a one-dimensional labeled array capable of holding any data type (integers, strings, floating point numbers, Python objects, etc.). The axis labels are collectively referred to as the index. The basic method to create a Series is to call:
s = pd.Series(data, index=index)
DataFrame is a 2-dimensional labeled data structure with columns of potentially different types. You can think of it like a spreadsheet or SQL table, or a dict of Series objects.
d = {'one' : pd.Series([1., 2., 3.], index=['a', 'b', 'c']),
two' : pd.Series([1., 2., 3., 4.], index=['a', 'b', 'c', 'd'])}
df = pd.DataFrame(d)
If you are using C# 3.0 or higher you can do the following
foreach ( TextBox tb in this.Controls.OfType<TextBox>()) {
..
}
Without C# 3.0 you can do the following
foreach ( Control c in this.Controls ) {
TextBox tb = c as TextBox;
if ( null != tb ) {
...
}
}
Or even better, write OfType in C# 2.0.
public static IEnumerable<T> OfType<T>(IEnumerable e) where T : class {
foreach ( object cur in e ) {
T val = cur as T;
if ( val != null ) {
yield return val;
}
}
}
foreach ( TextBox tb in OfType<TextBox>(this.Controls)) {
..
}
The -m
switch of PuTTY takes a path to a script file as an argument, not a command.
Reference: https://the.earth.li/~sgtatham/putty/latest/htmldoc/Chapter3.html#using-cmdline-m
So you have to save your command (command_run
) to a plain text file (e.g. c:\path\command.txt
) and pass that to PuTTY:
putty.exe -ssh user@host -pw password -m c:\path\command.txt
Though note that you should use Plink (a command-line connection tool from PuTTY suite). It's a console application, so you can redirect its output to a file (what you cannot do with PuTTY).
A command-line syntax is identical, an output redirection added:
plink.exe -ssh user@host -pw password -m c:\path\command.txt > output.txt
See Using the command-line connection tool Plink.
And with Plink, you can actually provide the command directly on its command-line:
plink.exe -ssh user@host -pw password command > output.txt
Similar questions:
Automating running command on Linux from Windows using PuTTY
Executing command in Plink from a batch file
The empty string is false as a rule.
Apparently the empty string is not respected as empty in all browsers and the presence of the checked attribute is taken to mean checked. So the entire attribute must either be present or omitted.
-- i use something like this, with concepts and some code stolen from asktom.
-- suggestions for improvements are welcome
WITH
sess AS
(
SELECT *
FROM V$SESSION
WHERE USERNAME = USER
ORDER BY SID
)
SELECT si.SID,
si.LOCKWAIT,
si.OSUSER,
si.PROGRAM,
si.LOGON_TIME,
si.STATUS,
(
SELECT ROUND(USED_UBLK*8/1024,1)
FROM V$TRANSACTION,
sess
WHERE sess.TADDR = V$TRANSACTION.ADDR
AND sess.SID = si.SID
) rollback_remaining,
(
SELECT (MAX(DECODE(PIECE, 0,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 1,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 2,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 3,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 4,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 5,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 6,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 7,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 8,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 9,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 10,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 11,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 12,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 13,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 14,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 15,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 16,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 17,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 18,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 19,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 20,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 21,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 22,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 23,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 24,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 25,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 26,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 27,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 28,SQL_TEXT,NULL)) ||
MAX(DECODE(PIECE, 29,SQL_TEXT,NULL)))
FROM V$SQLTEXT_WITH_NEWLINES
WHERE ADDRESS = SI.SQL_ADDRESS AND
PIECE < 30
) SQL_TEXT
FROM sess si;
There's a workaround for IE - use inline SVG and set pointer-events="none" in SVG. See my answer in How to make Internet Explorer emulate pointer-events:none?
In my case, i'm using Postgresql 9.2.24 and solution was this (pg_hba.conf):
host all all 0.0.0.0/0 trust
For remote connections use trust. Combined with (as mentioned above)
listen_addresses = '*'
Use the config
method to change the value of the label:
top = Tk()
l = Label(top)
l.pack()
l.config(text = "Hello World", width = "50")
A simple way using Apache HTTP Components is
Request.Post("http://www.example.com/page.php")
.bodyForm(Form.form().add("id", "10").build())
.execute()
.returnContent();
Take a look at the Fluent API
Try to use it this way:
let current_time = moment().format("HH:mm")
Get rid of the parentheses.
Sample batch file:
echo "%1"
if ("%1"=="") echo match1
if "%1"=="" echo match2
Output from running above script:
C:\>echo ""
""
C:\>if ("" == "") echo match1
C:\>if "" == "" echo match2
match2
I think it is actually taking the parentheses to be part of the strings and they are being compared.
You can use the @ClassRule annotation in JUnit 4.9+ as I described in an answer another question.
here is the sample code to draw image on canvas-
$("#selectedImage").change(function(e) {
var URL = window.URL;
var url = URL.createObjectURL(e.target.files[0]);
img.src = url;
img.onload = function() {
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(img, 0, 0, 500, 500);
}});
In the above code selectedImage is an input control which can be used to browse image on system. For more details of sample code to draw image on canvas while maintaining the aspect ratio:
http://newapputil.blogspot.in/2016/09/show-image-on-canvas-html5.html
I tried $count = $stmt->rowCount();
with Oracle 11.2 and it did not work.
I decided to used a for loop as show below.
$count = "";
$stmt = $conn->prepare($sql);
$stmt->execute();
echo "<table border='1'>\n";
while($row = $stmt->fetch(PDO::FETCH_OBJ)) {
$count++;
echo "<tr>\n";
foreach ($row as $item) {
echo "<td class='td2'>".($item !== null ? htmlentities($item, ENT_QUOTES):" ")."</td>\n";
} //foreach ends
}// while ends
echo "</table>\n";
//echo " no of rows : ". oci_num_rows($stmt);
//equivalent in pdo::prepare statement
echo "no.of rows :".$count;
In this step I have Set the variable first:
<c:set var="structureId" value="<%=article.getStructureId()%>" scope="request"></c:set>
In this step I have checked the variable empty or not:
<c:if test="${not empty structureId }">
<a href="javascript:void(0);">Change Design</a>
</c:if>
The answer by Tony Andrews is a decent one. But the real answer is that this has been a convention used by relational database community and is NOT a necessity. Maybe it is a good convention, maybe not.
Comparing anything to NULL results in UNKNOWN (3rd truth value). So as has been suggested with nulls all traditional wisdom concerning equality goes out the window. Well that's how it seems at first glance.
But I don't think this is necessarily so and even SQL databases don't think that NULL destroys all possibility for comparison.
Run in your database the query SELECT * FROM VALUES(NULL) UNION SELECT * FROM VALUES(NULL)
What you see is just one tuple with one attribute that has the value NULL. So the union recognized here the two NULL values as equal.
When comparing a composite key that has 3 components to a tuple with 3 attributes (1, 3, NULL) = (1, 3, NULL) <=> 1 = 1 AND 3 = 3 AND NULL = NULL The result of this is UNKNOWN.
But we could define a new kind of comparison operator eg. ==. X == Y <=> X = Y OR (X IS NULL AND Y IS NULL)
Having this kind of equality operator would make composite keys with null components or non-composite key with null value unproblematic.
A fast and simple solution without any 3rd party includes.
public static String strJoin(String[] aArr, String sSep) {
StringBuilder sbStr = new StringBuilder();
for (int i = 0, il = aArr.length; i < il; i++) {
if (i > 0)
sbStr.append(sSep);
sbStr.append(aArr[i]);
}
return sbStr.toString();
}
Use this: http://winginx.com/htaccess
Online converter, nice way and time saver ;)
If you want to due this in component.ts
HTML:
<button class="class1 class2" (click)="clicked($event)">Click me</button>
Component:
clicked(event) {
event.target.classList.add('class3'); // To ADD
event.target.classList.remove('class1'); // To Remove
event.target.classList.contains('class2'); // To check
event.target.classList.toggle('class4'); // To toggle
}
For more options, examples and browser compatibility visit this link.
I think this is possible as easy as drink a glass of coffee!. Just take a look at this. We do not use static keyword explicitly while defining class.
public class StaticClass {
static private int me = 3;
public static void printHelloWorld() {
System.out.println("Hello World");
}
public static void main(String[] args) {
StaticClass.printHelloWorld();
System.out.println(StaticClass.me);
}
}
Is not that a definition of static class? We just use a function binded to just a class. Be careful that in this case we can use another class in that nested. Look at this:
class StaticClass1 {
public static int yum = 4;
static void printHowAreYou() {
System.out.println("How are you?");
}
}
public class StaticClass {
static int me = 3;
public static void printHelloWorld() {
System.out.println("Hello World");
StaticClass1.printHowAreYou();
System.out.println(StaticClass1.yum);
}
public static void main(String[] args) {
StaticClass.printHelloWorld();
System.out.println(StaticClass.me);
}
}
Ensure position
is on your element and set the z-index
to a value higher than the elements you want to cover.
element {
position: fixed;
z-index: 999;
}
div {
position: relative;
z-index: 99;
}
It will probably require some more work than that but it's a start since you didn't post any code.
The two most common ways to access properties in JavaScript are with a dot and with square brackets. Both value.x and value[x]
access a property on value—but not necessarily the same property. The difference is in how x is interpreted. When using a dot, the part after the dot must be a valid variable name, and it directly names the property. When using square brackets, the expression between the brackets is evaluated to get the property name. Whereas value.x fetches the property of value named “x”, value[x] tries to evaluate the expression x and uses the result as the property name.
So if you know that the property you are interested in is called “length”, you say value.length
. If you want to extract the property named by the value held in the variable i
, you say value[i]
. And because property names can be any string, if you want to access a property named “2”
or “John Doe”
, you must use square brackets: value[2] or value["John Doe"]
. This is the case even though you know the precise name of the property in advance, because neither “2” nor “John Doe”
is a valid variable name and so cannot be accessed through dot notation.
In case of Arrays
The elements in an array are stored in properties. Because the names of these properties are numbers and we often need to get their name from a variable, we have to use the bracket syntax to access them. The length property of an array tells us how many elements it contains. This property name is a valid variable name, and we know its name in advance, so to find the length of an array, you typically write array.length
because that is easier to write than array["length"]
.
In my case I had to add the public key to my repo (at Bitbucket) AND use git clone once via ssh to answer yes to the "known host" question the first time.
It is always a good coding practice to make your one argument constructors (including those with default values for arg2
,arg3
,...) as already stated.
Like always with C++: if you don't - you'll wish you did...
Another good practice for classes is to make copy construction and assignment private (a.k.a. disable it) unless you really need to implement it. This avoids having eventual copies of pointers when using the methods that C++ will create for you by default. An other way to do this is derive from boost::noncopyable
.
Just wanted to add another solution if you already have a recycler touch listener and want to handle all of the touch events in it rather than dealing with the button touch event separately in the view holder. The key thing this adapted version of the class does is return the button view in the onItemClick() callback when it's tapped, as opposed to the item container. You can then test for the view being a button, and carry out a different action. Note, long tapping on the button is interpreted as a long tap on the whole row still.
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener
{
public static interface OnItemClickListener
{
public void onItemClick(View view, int position);
public void onItemLongClick(View view, int position);
}
private OnItemClickListener mListener;
private GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener)
{
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener()
{
@Override
public boolean onSingleTapUp(MotionEvent e)
{
// Important: x and y are translated coordinates here
final ViewGroup childViewGroup = (ViewGroup) recyclerView.findChildViewUnder(e.getX(), e.getY());
if (childViewGroup != null && mListener != null) {
final List<View> viewHierarchy = new ArrayList<View>();
// Important: x and y are raw screen coordinates here
getViewHierarchyUnderChild(childViewGroup, e.getRawX(), e.getRawY(), viewHierarchy);
View touchedView = childViewGroup;
if (viewHierarchy.size() > 0) {
touchedView = viewHierarchy.get(0);
}
mListener.onItemClick(touchedView, recyclerView.getChildPosition(childViewGroup));
return true;
}
return false;
}
@Override
public void onLongPress(MotionEvent e)
{
View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
if(childView != null && mListener != null)
{
mListener.onItemLongClick(childView, recyclerView.getChildPosition(childView));
}
}
});
}
public void getViewHierarchyUnderChild(ViewGroup root, float x, float y, List<View> viewHierarchy) {
int[] location = new int[2];
final int childCount = root.getChildCount();
for (int i = 0; i < childCount; ++i) {
final View child = root.getChildAt(i);
child.getLocationOnScreen(location);
final int childLeft = location[0], childRight = childLeft + child.getWidth();
final int childTop = location[1], childBottom = childTop + child.getHeight();
if (child.isShown() && x >= childLeft && x <= childRight && y >= childTop && y <= childBottom) {
viewHierarchy.add(0, child);
}
if (child instanceof ViewGroup) {
getViewHierarchyUnderChild((ViewGroup) child, x, y, viewHierarchy);
}
}
}
@Override
public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e)
{
mGestureDetector.onTouchEvent(e);
return false;
}
@Override
public void onTouchEvent(RecyclerView view, MotionEvent motionEvent){}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
Then using it from activity / fragment:
recyclerView.addOnItemTouchListener(createItemClickListener(recyclerView));
public RecyclerItemClickListener createItemClickListener(final RecyclerView recyclerView) {
return new RecyclerItemClickListener (context, recyclerView, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
if (view instanceof AppCompatButton) {
// ... tapped on the button, so go do something
} else {
// ... tapped on the item container (row), so do something different
}
}
@Override
public void onItemLongClick(View view, int position) {
}
});
}
JPA is just a specification.In market there are many vendors which implements JPA. Different types of vendors implement JPA in different way. so different types of vendors provide different functionality so choose proper vendor based on your requirements.
If you are using Hibernate or any other vendors instead of JPA than you can not easily move to hibernate to EclipseLink or OpenJPA to Hibernate.But If you using JPA than you just have to change provide in persistence XML file.So migration is easily possible in JPA.
answer is;
select date_part('year', timestamp '2001-02-16 20:38:40') as year,
date_part('month', timestamp '2001-02-16 20:38:40') as month,
date_part('day', timestamp '2001-02-16 20:38:40') as day,
date_part('hour', timestamp '2001-02-16 20:38:40') as hour,
date_part('minute', timestamp '2001-02-16 20:38:40') as minute
look at the _.keys() and _.values() functions in either lodash or underscore
Building on @Prasath's answer. This is how you do it in Swift:
if application.respondsToSelector("isRegisteredForRemoteNotifications")
{
// iOS 8 Notifications
application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: (.Badge | .Sound | .Alert), categories: nil));
application.registerForRemoteNotifications()
}
else
{
// iOS < 8 Notifications
application.registerForRemoteNotificationTypes(.Badge | .Sound | .Alert)
}
I think these three links sum it up:
stringstream and lexical_cast solutions are about the same as lexical cast is using stringstream.
Some specializations of lexical cast use different approach see http://www.boost.org/doc/libs/release/boost/lexical_cast.hpp for details. Integers and floats are now specialized for integer to string conversion.
One can specialize lexical_cast for his/her own needs and make it fast. This would be the ultimate solution satisfying all parties, clean and simple.
Articles already mentioned show comparison between different methods of converting integers <-> strings. Following approaches make sense: old c-way, spirit.karma, fastformat, simple naive loop.
Lexical_cast is ok in some cases e.g. for int to string conversion.
Converting string to int using lexical cast is not a good idea as it is 10-40 times slower than atoi depending on the platform/compiler used.
Boost.Spirit.Karma seems to be the fastest library for converting integer to string.
ex.: generate(ptr_char, int_, integer_number);
and basic simple loop from the article mentioned above is a fastest way to convert string to int, obviously not the safest one, strtol() seems like a safer solution
int naive_char_2_int(const char *p) {
int x = 0;
bool neg = false;
if (*p == '-') {
neg = true;
++p;
}
while (*p >= '0' && *p <= '9') {
x = (x*10) + (*p - '0');
++p;
}
if (neg) {
x = -x;
}
return x;
}
Expanding on the accepted answer, if the input is:
1,NYC
2,ABQ
...
you will still be able to apply the same logic, like this:
#include <fstream>
std::ifstream infile("thefile.txt");
if (infile.is_open()) {
int number;
std::string str;
char c;
while (infile >> number >> c >> str && c == ',')
std::cout << number << " " << str << "\n";
}
infile.close();
@Alan's answer will do what you're looking for, but this solution fails when you use the responsive capabilities of Bootstrap. In your case, you're using the xs
sizes so you won't notice, but if you used anything else (e.g. col-sm
, col-md
, etc), you'd understand.
Another approach is to play with margins and padding. See the updated fiddle: http://jsfiddle.net/jz8j247x/1/
.left-side {
background-color: blue;
padding-bottom: 1000px;
margin-bottom: -1000px;
height: 100%;
}
.something {
height: 100%;
background-color: red;
padding-bottom: 1000px;
margin-bottom: -1000px;
height: 100%;
}
.row {
background-color: green;
overflow: hidden;
}
This error message is normally displayed after you have published your website to the server.
The main problem lies in the Application Pool you use for your website.
Configure your website to use the proper .NET Framework version (i.e. v4.0) under the General section of the Application Pool related to your website.
Under the Process Model, set the Identity value to Network Service.
Close the dialog box and right-click your website and select Advanced Settings... from the Manage Website option of the content menu. In the dialog box, under General section, make sure you have selected the proper name of the Application Pool to be used.
Your website should now run without any problem.
Hope this helps you overcome this error.
A task is something you want done.
A thread is one of the many possible workers which performs that task.
In .NET 4.0 terms, a Task represents an asynchronous operation. Thread(s) are used to complete that operation by breaking the work up into chunks and assigning to separate threads.
In the "database" section of the logon dialog box, enter //hostname.domain:port/database
, in your case //123.45.67.89:1521/TEST
- this assumes that you don't want to set up a tnsnames.ora
file/entry for some reason.
Also make sure the firewall settings on your server are not blocking port 1521
.
First off, some clarifications to KLE's answer:
Unconstrained (nullable) one-to-one association is the only one that can not be proxied without bytecode instrumentation. The reason for this is that owner entity MUST know whether association property should contain a proxy object or NULL and it can't determine that by looking at its base table's columns due to one-to-one normally being mapped via shared PK, so it has to be eagerly fetched anyway making proxy pointless. Here's a more detailed explanation.
many-to-one associations (and one-to-many, obviously) do not suffer from this issue. Owner entity can easily check its own FK (and in case of one-to-many, empty collection proxy is created initially and populated on demand), so the association can be lazy.
Replacing one-to-one with one-to-many is pretty much never a good idea. You can replace it with unique many-to-one but there are other (possibly better) options.
Rob H. has a valid point, however you may not be able to implement it depending on your model (e.g. if your one-to-one association is nullable).
Now, as far as original question goes:
A) @ManyToOne(fetch=FetchType.LAZY)
should work just fine. Are you sure it's not being overwritten in the query itself? It's possible to specify join fetch
in HQL and / or explicitly set fetch mode via Criteria API which would take precedence over class annotation. If that's not the case and you're still having problems, please post your classes, query and resulting SQL for more to-the-point conversation.
B) @OneToOne
is trickier. If it's definitely not nullable, go with Rob H.'s suggestion and specify it as such:
@OneToOne(optional = false, fetch = FetchType.LAZY)
Otherwise, if you can change your database (add a foreign key column to owner table), do so and map it as "joined":
@OneToOne(fetch = FetchType.LAZY)
@JoinColumn(name="other_entity_fk")
public OtherEntity getOther()
and in OtherEntity:
@OneToOne(mappedBy = "other")
public OwnerEntity getOwner()
If you can't do that (and can't live with eager fetching) bytecode instrumentation is your only option. I have to agree with CPerkins, however - if you have 80!!! joins due to eager OneToOne associations, you've got bigger problems then this :-)
If you were open to using JQuery, you could modify the background color for any link that has the property aria-expanded
set to true by doing the following...
$("a[aria-expanded='true']").css("background-color", "#42DCA3");
Depending on how specific you want to be regarding which links this applies to, you may have to slightly modify your selector.
XAML :
<DataGrid x:Name="dgv_Students" AutoGenerateColumns="False" ItemsSource="{Binding People}" Margin="10,20,10,0" Style="{StaticResource AzureDataGrid}" FontFamily="B Yekan" Background="#FFB9D1BA" >
<DataGrid.Columns>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Click="Button_Click_dgvs">Text</Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
Code Behind :
private IEnumerable<DataGridRow> GetDataGridRowsForButtons(DataGrid grid)
{ //IQueryable
var itemsSource = grid.ItemsSource as IEnumerable;
if (null == itemsSource) yield return null;
foreach (var item in itemsSource)
{
var row = grid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;
if (null != row & row.IsSelected) yield return row;
}
}
void Button_Click_dgvs(object sender, RoutedEventArgs e)
{
for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual)
if (vis is DataGridRow)
{
// var row = (DataGrid)vis;
var rows = GetDataGridRowsForButtons(dgv_Students);
string id;
foreach (DataGridRow dr in rows)
{
id = (dr.Item as tbl_student).Identification_code;
MessageBox.Show(id);
break;
}
break;
}
}
After clicking on the Button, the ID of that row is returned to you and you can use it for your Button name.
Assuming you have people is List of object
Map<String, String> phoneBook=people.stream()
.collect(toMap(Person::getName, Person::getAddress));
Now you need two steps :
1)
people =removeDuplicate(people);
2)
Map<String, String> phoneBook=people.stream()
.collect(toMap(Person::getName, Person::getAddress));
Here is method to remove duplicate
public static List removeDuplicate(Collection<Person> list) {
if(list ==null || list.isEmpty()){
return null;
}
Object removedDuplicateList =
list.stream()
.distinct()
.collect(Collectors.toList());
return (List) removedDuplicateList;
}
Adding full example here
package com.example.khan.vaquar;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
public class RemovedDuplicate {
public static void main(String[] args) {
Person vaquar = new Person(1, "Vaquar", "Khan");
Person zidan = new Person(2, "Zidan", "Khan");
Person zerina = new Person(3, "Zerina", "Khan");
// Add some random persons
Collection<Person> duplicateList = Arrays.asList(vaquar, zidan, zerina, vaquar, zidan, vaquar);
//
System.out.println("Before removed duplicate list" + duplicateList);
//
Collection<Person> nonDuplicateList = removeDuplicate(duplicateList);
//
System.out.println("");
System.out.println("After removed duplicate list" + nonDuplicateList);
;
// 1) solution Working code
Map<Object, Object> k = nonDuplicateList.stream().distinct()
.collect(Collectors.toMap(s1 -> s1.getId(), s1 -> s1));
System.out.println("");
System.out.println("Result 1 using method_______________________________________________");
System.out.println("k" + k);
System.out.println("_____________________________________________________________________");
// 2) solution using inline distinct()
Map<Object, Object> k1 = duplicateList.stream().distinct()
.collect(Collectors.toMap(s1 -> s1.getId(), s1 -> s1));
System.out.println("");
System.out.println("Result 2 using inline_______________________________________________");
System.out.println("k1" + k1);
System.out.println("_____________________________________________________________________");
//breacking code
System.out.println("");
System.out.println("Throwing exception _______________________________________________");
Map<Object, Object> k2 = duplicateList.stream()
.collect(Collectors.toMap(s1 -> s1.getId(), s1 -> s1));
System.out.println("");
System.out.println("k2" + k2);
System.out.println("_____________________________________________________________________");
}
public static List removeDuplicate(Collection<Person> list) {
if (list == null || list.isEmpty()) {
return null;
}
Object removedDuplicateList = list.stream().distinct().collect(Collectors.toList());
return (List) removedDuplicateList;
}
}
// Model class
class Person {
public Person(Integer id, String fname, String lname) {
super();
this.id = id;
this.fname = fname;
this.lname = lname;
}
private Integer id;
private String fname;
private String lname;
// Getters and Setters
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
@Override
public String toString() {
return "Person [id=" + id + ", fname=" + fname + ", lname=" + lname + "]";
}
}
Results :
Before removed duplicate list[Person [id=1, fname=Vaquar, lname=Khan], Person [id=2, fname=Zidan, lname=Khan], Person [id=3, fname=Zerina, lname=Khan], Person [id=1, fname=Vaquar, lname=Khan], Person [id=2, fname=Zidan, lname=Khan], Person [id=1, fname=Vaquar, lname=Khan]]
After removed duplicate list[Person [id=1, fname=Vaquar, lname=Khan], Person [id=2, fname=Zidan, lname=Khan], Person [id=3, fname=Zerina, lname=Khan]]
Result 1 using method_______________________________________________
k{1=Person [id=1, fname=Vaquar, lname=Khan], 2=Person [id=2, fname=Zidan, lname=Khan], 3=Person [id=3, fname=Zerina, lname=Khan]}
_____________________________________________________________________
Result 2 using inline_______________________________________________
k1{1=Person [id=1, fname=Vaquar, lname=Khan], 2=Person [id=2, fname=Zidan, lname=Khan], 3=Person [id=3, fname=Zerina, lname=Khan]}
_____________________________________________________________________
Throwing exception _______________________________________________
Exception in thread "main" java.lang.IllegalStateException: Duplicate key Person [id=1, fname=Vaquar, lname=Khan]
at java.util.stream.Collectors.lambda$throwingMerger$0(Collectors.java:133)
at java.util.HashMap.merge(HashMap.java:1253)
at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320)
at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at com.example.khan.vaquar.RemovedDuplicate.main(RemovedDuplicate.java:48)
Step 1
Create a objective c file(.m file) and it's corresponding header file.
// Header file (We call it "ObjCFunc.h")
#ifndef test2_ObjCFunc_h
#define test2_ObjCFunc_h
@interface myClass :NSObject
-(void)hello:(int)num1;
@end
#endif
// Corresponding Objective C file(We call it "ObjCFunc.m")
#import <Foundation/Foundation.h>
#include "ObjCFunc.h"
@implementation myClass
//Your objective c code here....
-(void)hello:(int)num1
{
NSLog(@"Hello!!!!!!");
}
@end
Step 2
Now we will implement a c++ function to call the objective c function that we just created! So for that we will define a .mm file and its corresponding header file(".mm" file is to be used here because we will be able to use both Objective C and C++ coding in the file)
//Header file(We call it "ObjCCall.h")
#ifndef __test2__ObjCCall__
#define __test2__ObjCCall__
#include <stdio.h>
class ObjCCall
{
public:
static void objectiveC_Call(); //We define a static method to call the function directly using the class_name
};
#endif /* defined(__test2__ObjCCall__) */
//Corresponding Objective C++ file(We call it "ObjCCall.mm")
#include "ObjCCall.h"
#include "ObjCFunc.h"
void ObjCCall::objectiveC_Call()
{
//Objective C code calling.....
myClass *obj=[[myClass alloc]init]; //Allocating the new object for the objective C class we created
[obj hello:(100)]; //Calling the function we defined
}
Step 3
Calling the c++ function(which actually calls the objective c method)
#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__
#include "cocos2d.h"
#include "ObjCCall.h"
class HelloWorld : public cocos2d::Layer
{
public:
// there's no 'id' in cpp, so we recommend returning the class instance pointer
static cocos2d::Scene* createScene();
// Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
virtual bool init();
// a selector callback
void menuCloseCallback(cocos2d::Ref* pSender);
void ObCCall(); //definition
// implement the "static create()" method manually
CREATE_FUNC(HelloWorld);
};
#endif // __HELLOWORLD_SCENE_H__
//Final call
#include "HelloWorldScene.h"
#include "ObjCCall.h"
USING_NS_CC;
Scene* HelloWorld::createScene()
{
// 'scene' is an autorelease object
auto scene = Scene::create();
// 'layer' is an autorelease object
auto layer = HelloWorld::create();
// add layer as a child to scene
scene->addChild(layer);
// return the scene
return scene;
}
// on "init" you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !Layer::init() )
{
return false;
}
Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();
/////////////////////////////
// 2. add a menu item with "X" image, which is clicked to quit the program
// you may modify it.
// add a "close" icon to exit the progress. it's an autorelease object
auto closeItem = MenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));
closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
origin.y + closeItem->getContentSize().height/2));
// create menu, it's an autorelease object
auto menu = Menu::create(closeItem, NULL);
menu->setPosition(Vec2::ZERO);
this->addChild(menu, 1);
/////////////////////////////
// 3. add your codes below...
// add a label shows "Hello World"
// create and initialize a label
auto label = Label::createWithTTF("Hello World", "fonts/Marker Felt.ttf", 24);
// position the label on the center of the screen
label->setPosition(Vec2(origin.x + visibleSize.width/2,
origin.y + visibleSize.height - label- >getContentSize().height));
// add the label as a child to this layer
this->addChild(label, 1);
// add "HelloWorld" splash screen"
auto sprite = Sprite::create("HelloWorld.png");
// position the sprite on the center of the screen
sprite->setPosition(Vec2(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));
// add the sprite as a child to this layer
this->addChild(sprite, 0);
this->ObCCall(); //first call
return true;
}
void HelloWorld::ObCCall() //Definition
{
ObjCCall::objectiveC_Call(); //Final Call
}
void HelloWorld::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
return;
#endif
Director::getInstance()->end();
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
exit(0);
#endif
}
Hope this works!
For Mac/Linux;
PYTHONPATH=/foo/bar/baz python somescript.py somecommand
For Windows, setup a wrapper pythonpath.bat
;
@ECHO OFF
setlocal
set PYTHONPATH=%1
python %2 %3
endlocal
and call pythonpath.bat
script file like;
pythonpath.bat /foo/bar/baz somescript.py somecommand
I found this sample in Apache's Quickstart Guide. It's for version 4.5:
/**
* Example how to use multipart/form encoded POST request.
*/
public class ClientMultipartFormPost {
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.out.println("File path not given");
System.exit(1);
}
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
HttpPost httppost = new HttpPost("http://localhost:8080" +
"/servlets-examples/servlet/RequestInfoExample");
FileBody bin = new FileBody(new File(args[0]));
StringBody comment = new StringBody("A binary file of some kind", ContentType.TEXT_PLAIN);
HttpEntity reqEntity = MultipartEntityBuilder.create()
.addPart("bin", bin)
.addPart("comment", comment)
.build();
httppost.setEntity(reqEntity);
System.out.println("executing request " + httppost.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httppost);
try {
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
System.out.println("Response content length: " + resEntity.getContentLength());
}
EntityUtils.consume(resEntity);
} finally {
response.close();
}
} finally {
httpclient.close();
}
}
}
Just to clarify, do you have JAVA_HOME set as a system variable or set in Eclipse classpath variables? I'm pretty sure (but not totally sure!) that the system variable is used by the command line compiler (and Ant), but that Eclipse modifies this accroding to the JDK used
Please refer SysInternal toolkit from Microsoft from below link, https://docs.microsoft.com/en-us/sysinternals/downloads/process-explorer
Goto the download folder, Open "Procexp64.exe" as admin privilege. Open Find Menu-> "Find Handle or DLL" option or Ctrl+F shortcut way.
What am I doing incorrectly?
You have to convert html to javascript object, and then as a second step to json throug JSON.Stringify.
How can I receive a json object in the controller?
View:
<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
<script src="https://raw.githubusercontent.com/marioizquierdo/jquery.serializeJSON/master/jquery.serializejson.js"></script>
var obj = $("#form1").serializeJSON({ useIntKeysAsArrayIndex: true });
$.post("http://localhost:52161/Default/PostRawJson/", { json: JSON.stringify(obj) });
<form id="form1" method="post">
<input name="OrderDate" type="text" /><br />
<input name="Item[0][Id]" type="text" /><br />
<input name="Item[1][Id]" type="text" /><br />
<button id="btn" onclick="btnClick()">Button</button>
</form>
Controller:
public void PostRawJson(string json)
{
var order = System.Web.Helpers.Json.Decode(json);
var orderDate = order.OrderDate;
var secondOrderId = order.Item[1].Id;
}
You can also use the customized link as:
https://example.com/wp-login.php?redirect_to=https://example.com/news.php
Here's the way to do it without using any external libraries:
// Define a class like this
function Person(name, gender){
// Add object properties like this
this.name = name;
this.gender = gender;
}
// Add methods like this. All Person objects will be able to invoke this
Person.prototype.speak = function(){
alert("Howdy, my name is" + this.name);
};
// Instantiate new objects with 'new'
var person = new Person("Bob", "M");
// Invoke methods like this
person.speak(); // alerts "Howdy, my name is Bob"
Now the real answer is a whole lot more complex than that. For instance, there is no such thing as classes in JavaScript. JavaScript uses a prototype
-based inheritance scheme.
In addition, there are numerous popular JavaScript libraries that have their own style of approximating class-like functionality in JavaScript. You'll want to check out at least Prototype and jQuery.
Deciding which of these is the "best" is a great way to start a holy war on Stack Overflow. If you're embarking on a larger JavaScript-heavy project, it's definitely worth learning a popular library and doing it their way. I'm a Prototype guy, but Stack Overflow seems to lean towards jQuery.
As far as there being only "one way to do it", without any dependencies on external libraries, the way I wrote is pretty much it.
To temporarily disable the draggable behavior use:
$('#item-id').draggable( "disable" )
To remove the draggable behavior permanently use:
$('#item-id').draggable( "destroy" )
This is a briefer variation of the accepted answer: the function below extracts the bits from-to inclusive by creating a bitmask. After applying an AND logic over the original number the result is shifted so the function returns just the extracted bits. Skipped index/integrity checks for clarity.
uint16_t extractInt(uint16_t orig16BitWord, unsigned from, unsigned to)
{
unsigned mask = ( (1<<(to-from+1))-1) << from;
return (orig16BitWord & mask) >> from;
}
Best way to send html formatted Email
This code will be in "Customer.htm"
<table>
<tr>
<td>
Dealer's Company Name
</td>
<td>
:
</td>
<td>
#DealerCompanyName#
</td>
</tr>
</table>
Read HTML file Using System.IO.File.ReadAllText. get all HTML code in string variable.
string Body = System.IO.File.ReadAllText(HttpContext.Current.Server.MapPath("EmailTemplates/Customer.htm"));
Replace Particular string to your custom value.
Body = Body.Replace("#DealerCompanyName#", _lstGetDealerRoleAndContactInfoByCompanyIDResult[0].CompanyName);
call SendEmail(string Body) Function and do procedure to send email.
public static void SendEmail(string Body)
{
MailMessage message = new MailMessage();
message.From = new MailAddress(Session["Email"].Tostring());
message.To.Add(ConfigurationSettings.AppSettings["RequesEmail"].ToString());
message.Subject = "Request from " + SessionFactory.CurrentCompany.CompanyName + " to add a new supplier";
message.IsBodyHtml = true;
message.Body = Body;
SmtpClient smtpClient = new SmtpClient();
smtpClient.UseDefaultCredentials = true;
smtpClient.Host = ConfigurationSettings.AppSettings["SMTP"].ToString();
smtpClient.Port = Convert.ToInt32(ConfigurationSettings.AppSettings["PORT"].ToString());
smtpClient.EnableSsl = true;
smtpClient.Credentials = new System.Net.NetworkCredential(ConfigurationSettings.AppSettings["USERNAME"].ToString(), ConfigurationSettings.AppSettings["PASSWORD"].ToString());
smtpClient.Send(message);
}
This is due to espresso. You can add the following to your apps build.grade
to mitigate this.
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2') {
exclude group: 'com.google.code.findbugs'
}
From following this thread down the rabbit hole, I came to this, works on Win10 and Ubuntu 20.04. I wanted more than just killing the script, and to use specific keys, and it had to work in both MS and Linux..
import _thread
import time
import sys
import os
class _Getch:
"""Gets a single character from standard input. Does not echo to the screen."""
def __init__(self):
try:
self.impl = _GetchWindows()
except ImportError:
self.impl = _GetchUnix()
def __call__(self): return self.impl()
class _GetchUnix:
def __init__(self):
import tty, sys
def __call__(self):
import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
class _GetchWindows:
def __init__(self):
import msvcrt
def __call__(self):
import msvcrt
msvcrt_char = msvcrt.getch()
return msvcrt_char.decode("utf-8")
def input_thread(key_press_list):
char = 'x'
while char != 'q': #dont keep doing this after trying to quit, or 'stty sane' wont work
time.sleep(0.05)
getch = _Getch()
char = getch.impl()
pprint("getch: "+ str(char))
key_press_list.append(char)
def quitScript():
pprint("QUITTING...")
time.sleep(0.2) #wait for the thread to die
os.system('stty sane')
sys.exit()
def pprint(string_to_print): #terminal is in raw mode so we need to append \r\n
print(string_to_print, end="\r\n")
def main():
key_press_list = []
_thread.start_new_thread(input_thread, (key_press_list,))
while True:
#do your things here
pprint("tick")
time.sleep(0.5)
if key_press_list == ['q']:
key_press_list.clear()
quitScript()
elif key_press_list == ['j']:
key_press_list.clear()
pprint("knock knock..")
elif key_press_list:
key_press_list.clear()
main()