You can use Edit > Column Editor...
to insert text at the current and following lines. The shortcut is Alt + C.
barplot(data)
barplot(data, yaxp=c(0, max(data), 5))
yaxp=c(minY-axis, maxY-axis, Interval)
Try this;
function X (id,parameter1,parameter2,...) {
$.ajax({
url: '@Url.Action("Actionre", "controller")',+ id,
type: "Get",
data: { parameter1: parameter1, parameter2: parameter2,...}
}).done(function(result) {
your code...
});
}
So controller method would looks like :
public ActionResult ActionName(id,parameter1, parameter2,...)
{
Your Code .......
}
if myfile.closed == False:
print("File is still open ################")
The reason why your X-axis plots frequencies only till 500 Hz is your command statement 'f = Fs/2*linspace(0,1,NFFT/2+1);'. Your Fs is 1000. So when you divide it by 2 & then multiply by values ranging from 0 to 1, it returns a vector of length NFFT/2+1. This vector consists of equally spaced frequency values, ranging from 0 to Fs/2 (i.e. 500 Hz). Since you plot using 'plot(f,2*abs(Y(1:NFFT/2+1)))' command, your X-axis limit is 500 Hz.
UPDATE: Supposedly, zIndex
has been added to the react-native
library. I've been trying to get it to work without success. Check here for details of the fix.
<TextBlock Text="Stuff on line1
Stuff on line 2"/>
You can use any hexadecimally encoded value to represent a literal. In this case, I used the line feed (char 10). If you want to do "classic" vbCrLf
, then you can use 

By the way, note the syntax: It's the ampersand, a pound, the letter x, then the hex value of the character you want, and then finally a semi-colon.
ALSO: For completeness, you can bind to a text that already has the line feeds embedded in it like a constant in your code behind, or a variable constructed at runtime.
Have not yet seen this answer, so here's how you can do this with vi
or vim
:
vi -c '%s/\(http:\/\/.\{-}\/\).*/\1/ge | wq' file &>/dev/null
This runs the vi
:%s
substitution globally (the trailing g
), refrains from raising an error if the pattern is not found (e
), then saves the resulting changes to disk and quits. The &>/dev/null
prevents the GUI from briefly flashing on screen, which can be annoying.
I like using vi
sometimes for super complicated regexes, because (1) perl is dead dying, (2) vim has a very advanced regex engine, and (3) I'm already intimately familiar with vi
regexes in my day-to-day usage editing documents.
Another approach (no plugin needed) is to just use .ctrlKey
property of the event object that gets passed in. It indicates if Ctrl was pressed at the time of the event, like this:
$(document).keypress("c",function(e) {
if(e.ctrlKey)
alert("Ctrl+C was pressed!!");
});
You will also get a 404 error if you are using ipv6 and the server only accepts ipv4.
To use ipv4, make a request adding -4:
wget -4 http://www.php.net/get/php-5.4.13.tar.gz/from/this/mirror
Try this, I hope it will help:
position: fixed;
top: 0;
width: 100%;
height: 100%;
background-size: cover;
background-image: url('background.jpg');
In addition, just to buttress the former answers, it could be sorted as well either in descending desc
or ascending asc
orders by adding either as the second parameter.
$results = Project::orderBy('created_at', 'desc')->get();
I'd like to build upon some of the answers above and given elsewhere and suggest using absolute positioning along with the :before pseudo class. A lot of the examples above (and in similar questions) are utilizing custom HTML markup, including Font Awesome's method of handling. This goes against the original question, and isn't strictly necessary.
ul {
list-style-type: none;
padding-left: 20px;
}
li {
position: relative;
padding-left: 20px;
margin-bottom: 10px
}
li:before {
position: absolute;
top: 0;
left: 0;
font-family: FontAwesome;
content: "\f058";
color: green;
}
That's basically it. You can get the ISO value for use in CSS content on the Font Awesome cheatsheet. Simply use the last 4 alphanumerics prefixed with a backslash. So []
becomes \f058
After you setInputType
for a password field, you will have problem with FONT
Here is my solution for show/hide password without font problem
protected void onCreate(Bundle savedInstanceState) {
...
findViewById(R.id.button_show_hide_password).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isPasswordVisible(edtPassword)) {
enableInputHiddenPassword(edtPassword);
} else {
enableInputVisiblePassword(edtPassword);
}
edtPassword.setSelection(edtPassword.getText().length());
}
});
}
final int INPUT_TYPE_VISIBLE_PASSWORD = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD;
final int INPUT_TYPE_HIDDEN_PASSWORD = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD;
private boolean isPasswordVisible(EditText editText) {
return editText.getInputType() == INPUT_TYPE_VISIBLE_PASSWORD;
}
private void enableInputVisiblePassword(EditText editText) {
Typeface cache = editText.getTypeface();
editText.setInputType(INPUT_TYPE_VISIBLE_PASSWORD);
editText.setTypeface(cache);
}
private void enableInputHiddenPassword(EditText editText) {
Typeface cache = editText.getTypeface();
editText.setInputType(INPUT_TYPE_HIDDEN_PASSWORD);
editText.setTypeface(cache);
}
Note: I use InputType.TYPE_TEXT_VARIATION_PASSWORD
instead of InputType.TYPE_CLASS_TEXT
or HideReturnsTransformationMethod
because I want the keyboard display both text and number
typedef enum state {DEAD,ALIVE} State;
| | | | | |^ terminating semicolon, required!
| | | type specifier | | |
| | | | ^^^^^ declarator (simple name)
| | | |
| | ^^^^^^^^^^^^^^^^^^^^^^^
| |
^^^^^^^-- storage class specifier (in this case typedef)
The typedef
keyword is a pseudo-storage-class specifier. Syntactically, it is used in the same place where a storage class specifier like extern
or static
is used. It doesn't have anything to do with storage. It means that the declaration doesn't introduce the existence of named objects, but rather, it introduces names which are type aliases.
After the above declaration, the State
identifier becomes an alias for the type enum state {DEAD,ALIVE}
. The declaration also provides that type itself. However that isn't typedef
doing it. Any declaration in which enum state {DEAD,ALIVE}
appears as a type specifier introduces that type into the scope:
enum state {DEAD, ALIVE} stateVariable;
If enum state
has previously been introduced the typedef
has to be written like this:
typedef enum state State;
otherwise the enum
is being redefined, which is an error.
Like other declarations (except function parameter declarations), the typedef
declaration can have multiple declarators, separated by a comma. Moreover, they can be derived declarators, not only simple names:
typedef unsigned long ulong, *ulongptr;
| | | | | 1 | | 2 |
| | | | | | ^^^^^^^^^--- "pointer to" declarator
| | | | ^^^^^^------------- simple declarator
| | ^^^^^^^^^^^^^-------------------- specifier-qualifier list
^^^^^^^---------------------------------- storage class specifier
This typedef
introduces two type names ulong
and ulongptr
, based on the unsigned long
type given in the specifier-qualifier list. ulong
is just a straight alias for that type. ulongptr
is declared as a pointer to unsigned long
, thanks to the *
syntax, which in this role is a kind of type construction operator which deliberately mimics the unary *
for pointer dereferencing used in expressions. In other words ulongptr
is an alias for the "pointer to unsigned long
" type.
Alias means that ulongptr
is not a distinct type from unsigned long *
. This is valid code, requiring no diagnostic:
unsigned long *p = 0;
ulongptr q = p;
The variables q
and p
have exactly the same type.
The aliasing of typedef
isn't textual. For instance if user_id_t
is a typedef
name for the type int
, we may not simply do this:
unsigned user_id_t uid; // error! programmer hoped for "unsigned int uid".
This is an invalid type specifier list, combining unsigned
with a typedef name. The above can be done using the C preprocessor:
#define user_id_t int
unsigned user_id_t uid;
whereby user_id_t
is macro-expanded to the token int
prior to syntax analysis and translation. While this may seem like an advantage, it is a false one; avoid this in new programs.
Among the disadvantages that it doesn't work well for derived types:
#define silly_macro int *
silly_macro not, what, you, think;
This declaration doesn't declare what
, you
and think
as being of type "pointer to int" because the macro-expansion is:
int * not, what, you, think;
The type specifier is int
, and the declarators are *not
, what
, you
and think
. So not
has the expected pointer type, but the remaining identifiers do not.
And that's probably 99% of everything about typedef
and type aliasing in C.
I would use this syntax
Delete a
from TableA a
Inner Join TableB b
on a.BId = b.BId
WHERE [filter condition]
The main problem with your example code is that the $result
variable you use to store the output of curl_exec()
does not contain the body of the HTTP response - it contains the value true
. If you try to print_r()
that, it will just say "1".
The curl_exec()
reference explains:
Return Values
Returns
TRUE
on success orFALSE
on failure. However, if theCURLOPT_RETURNTRANSFER
option is set, it will return the result on success,FALSE
on failure.
So if you want to get the HTTP response body in your $result
variable, you must first run
curl_setopt($cURL, CURLOPT_RETURNTRANSFER, true);
After that, you can call json_decode()
on $result
, as other answers have noted.
On a general note - the curl library for PHP is useful and has a lot of features to handle the minutia of HTTP protocol (and others), but if all you want is to GET
some resource or even POST
to some URL, and read the response - then file_get_contents()
is all you'll ever need: it is much simpler to use and have much less surprising behavior to worry about.
Use custom validation of forms http://docs.angularjs.org/guide/forms Demo: http://plnkr.co/edit/NzeauIDVHlgeb6qF75hX?p=preview
Directive using formaters and parsers and MomentJS )
angModule.directive('moDateInput', function ($window) {
return {
require:'^ngModel',
restrict:'A',
link:function (scope, elm, attrs, ctrl) {
var moment = $window.moment;
var dateFormat = attrs.moDateInput;
attrs.$observe('moDateInput', function (newValue) {
if (dateFormat == newValue || !ctrl.$modelValue) return;
dateFormat = newValue;
ctrl.$modelValue = new Date(ctrl.$setViewValue);
});
ctrl.$formatters.unshift(function (modelValue) {
if (!dateFormat || !modelValue) return "";
var retVal = moment(modelValue).format(dateFormat);
return retVal;
});
ctrl.$parsers.unshift(function (viewValue) {
var date = moment(viewValue, dateFormat);
return (date && date.isValid() && date.year() > 1950 ) ? date.toDate() : "";
});
}
};
});
My function takes into account factor, character vector and potential attributes, if you use haven or foreign package to read external files. Also it allows matching different self-defined na.strings. To transform all columns, simply use lappy: df[] = lapply(df, blank2na, na.strings=c('','NA','na','N/A','n/a','NaN','nan'))
See more the comments:
#' Replaces blank-ish elements of a factor or character vector to NA
#' @description Replaces blank-ish elements of a factor or character vector to NA
#' @param x a vector of factor or character or any type
#' @param na.strings case sensitive strings that will be coverted to NA. The function will do a trimws(x,'both') before conversion. If NULL, do only trimws, no conversion to NA.
#' @return Returns a vector trimws (always for factor, character) and NA converted (if matching na.strings). Attributes will also be kept ('label','labels', 'value.labels').
#' @seealso \code{\link{ez.nan2na}}
#' @export
blank2na = function(x,na.strings=c('','.','NA','na','N/A','n/a','NaN','nan')) {
if (is.factor(x)) {
lab = attr(x, 'label', exact = T)
labs1 <- attr(x, 'labels', exact = T)
labs2 <- attr(x, 'value.labels', exact = T)
# trimws will convert factor to character
x = trimws(x,'both')
if (! is.null(lab)) lab = trimws(lab,'both')
if (! is.null(labs1)) labs1 = trimws(labs1,'both')
if (! is.null(labs2)) labs2 = trimws(labs2,'both')
if (!is.null(na.strings)) {
# convert to NA
x[x %in% na.strings] = NA
# also remember to remove na.strings from value labels
labs1 = labs1[! labs1 %in% na.strings]
labs2 = labs2[! labs2 %in% na.strings]
}
# the levels will be reset here
x = factor(x)
if (! is.null(lab)) attr(x, 'label') <- lab
if (! is.null(labs1)) attr(x, 'labels') <- labs1
if (! is.null(labs2)) attr(x, 'value.labels') <- labs2
} else if (is.character(x)) {
lab = attr(x, 'label', exact = T)
labs1 <- attr(x, 'labels', exact = T)
labs2 <- attr(x, 'value.labels', exact = T)
# trimws will convert factor to character
x = trimws(x,'both')
if (! is.null(lab)) lab = trimws(lab,'both')
if (! is.null(labs1)) labs1 = trimws(labs1,'both')
if (! is.null(labs2)) labs2 = trimws(labs2,'both')
if (!is.null(na.strings)) {
# convert to NA
x[x %in% na.strings] = NA
# also remember to remove na.strings from value labels
labs1 = labs1[! labs1 %in% na.strings]
labs2 = labs2[! labs2 %in% na.strings]
}
if (! is.null(lab)) attr(x, 'label') <- lab
if (! is.null(labs1)) attr(x, 'labels') <- labs1
if (! is.null(labs2)) attr(x, 'value.labels') <- labs2
} else {
x = x
}
return(x)
}
in SQL 2017 You can do it more easily in the toolbar to the right just hit
the SQL button then its gonna apear the query with the top 200 you edit until the quantity that You want and Execute the query and Done! just Edit
“CURL ERROR 7 Failed to connect to Permission denied” error is caused, when for any reason curl request is blocked by some firewall or similar thing.
you will face this issue when ever the curl request is not with standard ports.
for example if you do curl to some URL which is on port 1234, you will face this issue where as URL with port 80 will give you results easily.
Most commonly this error has been seen on CentOS and any other OS with ‘SElinux’.
you need to either disable or change ’SElinux’ to permissive
have a look on this one
http://www.akashif.co.uk/php/curl-error-7-failed-to-connect-to-permission-denied
Hope this helps
To concatenate two strings in 2008 or prior:
SELECT ISNULL(FirstName, '') + ' ' + ISNULL(SurName, '')
good to use ISNULL because "String + NULL" will give you a NULL only
One more thing: Make sure you are concatenating strings otherwise use a CAST operator:
SELECT 2 + 3
Will give 5
SELECT '2' + '3'
Will give 23
Well one way to do it is set the height of your body to the height
that you want your page
to be. In this example I did 600px
.
Then set your wrapper
height to a percentage of the body here I did 70%
This will adjust your table so that it does not fill up the whole screen but in stead just takes up a percentage of the specified page height.
body {
padding-top: 70px;
border:1px solid black;
height:600px;
}
.mygrid-wrapper-div {
border: solid red 5px;
overflow: scroll;
height: 70%;
}
Update How about a jQuery approach.
$(function() {
var window_height = $(window).height(),
content_height = window_height - 200;
$('.mygrid-wrapper-div').height(content_height);
});
$( window ).resize(function() {
var window_height = $(window).height(),
content_height = window_height - 200;
$('.mygrid-wrapper-div').height(content_height);
});
I had the same problem with slash in url get param, in my case following php code works:
$value = "hello/world"
$value = str_replace('/', '/', $value;?>
$value = urlencode($value);?>
# $value is now hello%26%2347%3Bworld
I first replace the slash by html entity and then I do the url encoding.
This method may not be relevant to your problem but to me it is quite useful.
Just type "cmd" in the address bar to open the Command Prompt, and then "jupyter notebook".
Via this method, you can quickly open Anaconda jupyter from any path you currently staying on Windows system.
Note: if you were on Branch1
, you will with Git 2.0 (Q2 2014) be able to type:
git checkout Branch2
git rebase -
See commit 4f40740 by Brian Gesiak modocache
:
rebase
: allow "-
" short-hand for the previous branchTeach rebase the same shorthand as
checkout
andmerge
to name the branch torebase
the current branch on; that is, that "-
" means "the branch we were previously on".
how to determine if a commit with particular hash have been pushed to the origin already?
# list remote branches that contain $commit
git branch -r --contains $commit
If you want the while loop to stop after some condition, and your foo
command returns non-zero when this condition is met then you can get the loop to break like this:
while foo; do echo 'sleeping...'; sleep 5; done;
For example, if the foo
command is deleting things in batches, and it returns 1 when there is nothing left to delete.
This works well if you have a custom script that needs to run a command many times until some condition. You write the script to exit with 1
when the condition is met and exit with 0
when it should be run again.
For example, say you have a python script batch_update.py
which updates 100 rows in a database and returns 0
if there are more to update and 1
if there are no more. The the following command will allow you to update rows 100 at a time with sleeping for 5 seconds between updates:
while batch_update.py; do echo 'sleeping...'; sleep 5; done;
In windows, if Python is installed into the default directory (For me it is):
cd C:\Python27
You then proceed to type
"python.exe "[FULLPATH]\[name].py"
to run your Python script in Command Prompt
You add your ActionListener
twice to button
. So correct your code for button2
to
JButton button2 = new JButton("hello agin2");
panel.add(button2);
button2.addActionListener (new Action2());//note the button2 here instead of button
Furthermore, perform your Swing operations on the correct thread by using EventQueue.invokeLater
@echo off
set countfiles=10
:loop
set /a countfiles -= 1
echo hi
if %countfiles% GTR 0 goto loop
pause
on the first "set countfiles" the 10 you see is the amount it will loop the echo hi is the thing you want to loop
...i'm 5 years late
Here's code that filters out invalid fields:
var ints = from field in s1.Split(';').Where((x) => { int dummy; return Int32.TryParse(x, out dummy); })
select Int32.Parse(field);
HSQLDB may cause problems for large applications, its not quite that stable.
The best I've heard (not first hand experience however) is berkleyDB. But unless you opensource it, it will cost you an arm and a leg to use due to licensing...see this http://www.oracle.com/technology/software/products/berkeley-db/htdocs/licensing.html for details.
ps. berkleyDB is not a relational database in case you didnt know.
Use the backslash symbol to escape the space
C:\> cd my folder
will be
C:\> cd my\folder
Please follow the following steps:-
If lombok jar has already been added as dependency in eclipse, then go to project's lib folder > Locate Lombok.xx.jar > Right Click on Jar> Run as Java Application> This will launch Lombok screen as below
:-
Next, click on "Specify location" > And specify location of "Eclipse.ini" file.(Eclipse neon on Mac osX has it at -> "<Eclipse_installation_path>/jee-neon/Eclipse.app/Contents/Eclipse/Eclipse.ini")
.
After this, restart eclipse and Clean build project.
This worked for me.
audio/* - All sound files are accepted
video/* - All video files are accepted
image/* - All image files are accepted
MIME_type - A valid MIME type, with no parameters. Look at IANA MIME types for a complete list of standard MIME types
You can use this OrderedDict recipe
written by Raymond Hettinger and modify it to add a rename
method, but this is going to be a O(N) in complexity:
def rename(self,key,new_key):
ind = self._keys.index(key) #get the index of old key, O(N) operation
self._keys[ind] = new_key #replace old key with new key in self._keys
self[new_key] = self[key] #add the new key, this is added at the end of self._keys
self._keys.pop(-1) #pop the last item in self._keys
Example:
dic = OrderedDict((("a",1),("b",2),("c",3)))
print dic
dic.rename("a","foo")
dic.rename("b","bar")
dic["d"] = 5
dic.rename("d","spam")
for k,v in dic.items():
print k,v
output:
OrderedDict({'a': 1, 'b': 2, 'c': 3})
foo 1
bar 2
c 3
spam 5
you can do something like this
<input placeholder="Name" #filterName name="filterName" />
<button (click) = "filterName.value = ''">Click</button>
or
Template
<input mdInput placeholder="Name" [(ngModel)]="filterName" name="filterName" >
<button (click) = "clear()'">Click</button>
In component
filterName:string;
clear(){
this.filterName = '';
}
Update
If it is a form
easiest and cleanest way to clear forms as well as their error states (dirty , prestine etc)
this.form_name.reset();
for more info on forms read out here
https://angular.io/docs/ts/latest/guide/forms.html
PS: As you asked question there is no form used in your question code you are using simple two day data binding using ngModel not with formControl.
form.reset() method works only for formControls reset call
A plunker to show how this will work link.
Update your project level build.gradle to latest version - it works for me
classpath 'com.android.tools.build:gradle:3.2.1'
classpath 'com.google.gms:google-services:4.2.0'
I put together a little test here:
\documentclass[10pt,twocolumn]{article}
\title{Article Title}
\author{
First Author\\
Department\\
school\\
email@edu
\and
Second Author\\
Department\\
school\\
email@edu
\and
Third Author\\
Department\\
school\\
email@edu
\and
Fourth Author\\
Department\\
school\\
email@edu
}
\date{\today}
\begin{document}
\maketitle
\begin{abstract}
\ldots
\end{abstract}
\section{Introduction}
\ldots
\end{document}
Things to note, the title, author and date fields are declared before \begin{document}
. Also, the multicol package is likely unnecessary in this case since you have declared twocolumn
in the document class.
This example puts all four authors on the same line, but if your authors have longer names, departments or emails, this might cause it to flow over onto another line. You might be able to change the font sizes around a little bit to make things fit. This could be done by doing something like {\small First Author}
. Here's a more detailed article on \LaTeX
font sizes:
https://engineering.purdue.edu/ECN/Support/KB/Docs/LaTeXChangingTheFont
To italicize you can use {\it First Name}
or \textit{First Name}
.
Be careful though, if the document is meant for publication often times journals or conference proceedings have their own formatting guidelines so font size trickery might not be allowed.
In C the type of character literals are int and char in C++. This is in C++ required to support function overloading. See this example:
void foo(char c)
{
puts("char");
}
void foo(int i)
{
puts("int");
}
int main()
{
foo('i');
return 0;
}
Output:
char
FILE=test
while read CMD; do
echo "$CMD"
done < "$FILE"
A redirection with < "$FILE"
has a few advantages over cat "$FILE" | while ...
. It avoids a useless use of cat, saving an unnecessary child process. It also avoids a common pitfall where the loop runs in a subshell. In bash, commands in a |
pipeline run in subshells, which means variable assignments are lost after the loop ends. Redirection with <
doesn't have that problem, so you could use $CMD
after the loop or modify other variables inside the loop. It also, again, avoids unnecessary child processes.
There are some additional improvements that could be made:
IFS=
so that read
won't trim leading and trailing whitespace from each line.-r
to read to prevent from backslashes from being interpreted as escape sequences.CMD
and FILE
. The bash convention is only environmental and internal shell variables are uppercase.printf
in place of echo
which is safer if $cmd
is a string like -n
, which echo
would interpret as a flag.file=test
while IFS= read -r cmd; do
printf '%s\n' "$cmd"
done < "$file"
I had the same problem, but finally discovered that it was an issue with the way I was invoking the script from an ASP web user control. I was using ClientScript.RegisterStartupScript()
, but forgot to give the script a unique key (the second argument). With both scripts being assigned the same key, only the first box was actually being converted into a datepicker. So I decided to append the textbox's ID to the key to make it unique:
Page.ClientScript.RegisterStartupScript(this.GetType(), "DPSetup" + DPTextbox.ClientID, dpScript);
CSS
body{
text-align:center;
}
.divWrapper{
width:960px //Change it the to width of the parent you want
margin: 0 auto;
text-align:left;
}
HTML
<div class="divWrapper">Tada!!</div>
This should center the div
2016 - HTML5 + CSS3 method
CSS
div#relative{
position:relative;
}
div#thisDiv{
position:absolute;
left:50%;
transform: translateX(-50%);
-webkit-transform: translateX(-50%);
}
HTML
<div id="relative">
<div id="thisDiv">Bla bla bla</div>
</div>
Fiddledlidle
I've found that using ; to separate commands only works in the foreground. eg :
cmd1; cmd2; cmd3 &
- will only execute cmd3
in the background, whereas
cmd1 && cmd2 && cmd3 &
- will execute the entire chain in the background IF there are no errors.
To cater for unconditional execution, using parenthesis solves this :
(cmd1; cmd2; cmd3) &
- will execute the chain of commands in the background, even if any step fails.
_MSC_VER
and possibly _MSC_FULL_VER
is what you need. You can also examine visualc.hpp in any recent boost install for some usage examples.
Some values for the more recent versions of the compiler are:
MSVC++ 14.24 _MSC_VER == 1924 (Visual Studio 2019 version 16.4)
MSVC++ 14.23 _MSC_VER == 1923 (Visual Studio 2019 version 16.3)
MSVC++ 14.22 _MSC_VER == 1922 (Visual Studio 2019 version 16.2)
MSVC++ 14.21 _MSC_VER == 1921 (Visual Studio 2019 version 16.1)
MSVC++ 14.2 _MSC_VER == 1920 (Visual Studio 2019 version 16.0)
MSVC++ 14.16 _MSC_VER == 1916 (Visual Studio 2017 version 15.9)
MSVC++ 14.15 _MSC_VER == 1915 (Visual Studio 2017 version 15.8)
MSVC++ 14.14 _MSC_VER == 1914 (Visual Studio 2017 version 15.7)
MSVC++ 14.13 _MSC_VER == 1913 (Visual Studio 2017 version 15.6)
MSVC++ 14.12 _MSC_VER == 1912 (Visual Studio 2017 version 15.5)
MSVC++ 14.11 _MSC_VER == 1911 (Visual Studio 2017 version 15.3)
MSVC++ 14.1 _MSC_VER == 1910 (Visual Studio 2017 version 15.0)
MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015 version 14.0)
MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013 version 12.0)
MSVC++ 11.0 _MSC_VER == 1700 (Visual Studio 2012 version 11.0)
MSVC++ 10.0 _MSC_VER == 1600 (Visual Studio 2010 version 10.0)
MSVC++ 9.0 _MSC_FULL_VER == 150030729 (Visual Studio 2008, SP1)
MSVC++ 9.0 _MSC_VER == 1500 (Visual Studio 2008 version 9.0)
MSVC++ 8.0 _MSC_VER == 1400 (Visual Studio 2005 version 8.0)
MSVC++ 7.1 _MSC_VER == 1310 (Visual Studio .NET 2003 version 7.1)
MSVC++ 7.0 _MSC_VER == 1300 (Visual Studio .NET 2002 version 7.0)
MSVC++ 6.0 _MSC_VER == 1200 (Visual Studio 6.0 version 6.0)
MSVC++ 5.0 _MSC_VER == 1100 (Visual Studio 97 version 5.0)
The version number above of course refers to the major version of your Visual studio you see in the about box, not to the year in the name. A thorough list can be found here. Starting recently, Visual Studio will start updating its ranges monotonically, meaning you should check ranges, rather than exact compiler values.
cl.exe /?
will give a hint of the used version, e.g.:
c:\program files (x86)\microsoft visual studio 11.0\vc\bin>cl /?
Microsoft (R) C/C++ Optimizing Compiler Version 17.00.50727.1 for x86
.....
There's a new proposed ECMA standard called dynamic import, recently incorporated into Chrome and Safari.
const moduleSpecifier = './dir/someModule.js';
import(moduleSpecifier)
.then(someModule => someModule.foo()); // executes foo method in someModule
A quick note: Assume.assumeTrue(condition)
ignores rest of the steps but passes the test.
To fail the test, use org.junit.Assert.fail()
inside the conditional statement. Works same like Assume.assumeTrue()
but fails the test.
See http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx
This explains that Unicode versions of Windows APIs have higher limits, and how to enable that.
As other people have answered, tuples in python are immutable and the only way to 'modify' one is to create a new one with the appended elements included.
But the best solution is a list. When whatever function or method that requires a tuple needs to be called, create a tuple by using tuple(list).
There are two ways to run tomcat in debug mode
Using jdpa run
Using JAVA_OPTS
First setup the environment. Then start the server using following commands.
export JPDA_ADDRESS=8000_x000D_
_x000D_
export JPDA_TRANSPORT=dt_socket_x000D_
_x000D_
%TOMCAT_HOME%/bin/catalina.sh jpda start_x000D_
_x000D_
sudo catalina.sh jpda start
_x000D_
refer this article for more information this is clearly define it
In case you missed the configuration at the Project Structure(File -> Project Structure), just reconfigure it like below:
Enjoy coding J
Message queues are ideal for requests which may take a long time to process. Requests are queued and can be processed offline without blocking the client. If the client needs to be notified of completion, you can provide a way for the client to periodically check the status of the request.
Message queues also allow you to scale better across time. It improves your ability to handle bursts of heavy activity, because the actual processing can be distributed across time.
Note that message queues and web services are orthogonal concepts, i.e. they are not mutually exclusive. E.g. you can have a XML based web service which acts as an interface to a message queue. I think the distinction your looking for is Message Queues versus Request/Response, the latter is when the request is processed synchronously.
This is super old, but I figured I'd add my 2c. DATE_FORMAT
does indeed return a string, but I was looking for the CAST
function, in the situation that I already had a datetime string in the database and needed to pattern match against it:
http://dev.mysql.com/doc/refman/5.0/en/cast-functions.html
In this case, you'd use:
CAST(date_value AS char)
This answers a slightly different question, but the question title seems ambiguous enough that this might help someone searching.
Just for completeness - in SQL 2008 you would use the plus +
operator to perform string concatenation.
Take a look at the MSDN reference with sample code. Starting with SQL 2012, you may wish to use the new CONCAT function.
//Properly Formatted
<script type="text/Javascript">
$(function ()
{
$('<div>').dialog({
modal: true,
open: function ()
{
$(this).load('mypage.html');
},
height: 400,
width: 600,
title: 'Ajax Page'
});
});
A very common mistake is as follows.
You have one view, UIView* a
, and another one, UIView* b
.
You add b to a as a subview.
If you try to call viewWillAppear in b, it will never be fired, because it is a subview of a
To remove the association between the local and remote branch run:
git config --unset branch.<local-branch-name>.remote
git config --unset branch.<local-branch-name>.merge
Optionally delete the local branch afterwards if you don't need it:
git branch -d <branch>
This won't delete the remote branch.
I use Windows Server 2012 for hosting for a long time and it just stop working after a more than years without any problem. My solution was to add public IP address of the server to list of relays and enabled Windows Integrated Authentication.
I just made two changes and I don't which help.
Go to IIS 6 Manager
Select properties of SMTP server
On tab Access, select Relays
Add your public IP address
Close the dialog and on the same tab click to Authentication button.
Add Integrated Windows Authentication
Maybe some step is not needed, but it works.
You can simply use:
#contentInfo_new br {display:none;}
Perhaps it is indirect to gdb (because it's an IDE), but my recommendations would be KDevelop. Being quite spoiled with Visual Studio's debugger (professionally at work for many years), I've so far felt the most comfortable debugging in KDevelop (as hobby at home, because I could not afford Visual Studio for personal use - until Express Edition came out). It does "look something similar to" Visual Studio compared to other IDE's I've experimented with (including Eclipse CDT) when it comes to debugging step-through, step-in, etc (placing break points is a bit awkward because I don't like to use mouse too much when coding, but it's not difficult).
This works for me. I discovered it when I had to work with DateTime.Date to get only the date part.
var wholeDate = DateTime.Parse("6/22/2009 10:00:00 AM");
var time = wholeDate - wholeDate.Date;
What's wrong with self.left = None
?
As mentioned in the excellent answer by janoside, you need to construct the JSON string and set it as a StringEntity
.
To construct the JSON string, you can use any library or method you are comfortable with. Jackson library is one easy example:
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
ObjectMapper mapper = new ObjectMapper();
ObjectNode node = mapper.createObjectNode();
node.put("name", "value"); // repeat as needed
String JSON_STRING = node.toString();
postMethod.setEntity(new StringEntity(JSON_STRING, ContentType.APPLICATION_JSON));
Manage setInterval with React Hooks:
const [seconds, setSeconds] = useState(0)
const interval = useRef(null)
useEffect(() => { if (seconds === 60) stopCounter() }, [seconds])
const startCounter = () => interval.current = setInterval(() => {
setSeconds(prevState => prevState + 1)
}, 1000)
const stopCounter = () => clearInterval(interval.current)
If your form is PHP based, it would work this way within your " <?php $data = array(" code:
'onkeypress' => 'return /[a-z 0-9]/i.test(event.key)',
((please update if necessary, this answer is a Wiki))
.text()
or .html()
?Answer: .html()
is faster! See here a "behaviour test-kit" for all the question.
So, in conclusion, if you have "only a text", use html()
method.
Note: Doesn't make sense? Remember that the .html()
function is only a wrapper to .innerHTML
, but in the .text()
function jQuery adds an "entity filter", and this filter naturally consumes time.
Ok, if you really want performance... Use pure Javascript to access direct text-replace by the nodeValue
property.
Benchmark conclusions:
.html()
is ~2x faster than .text()
..innerHTML
is ~3x faster than .html()
..nodeValue
is ~50x faster than .html()
, ~100x than .text()
, and ~20x than .innerHTML
.PS: .textContent
property was introduced with DOM-Level-3, .nodeValue
is DOM-Level-2 and is faster (!).
// Using jQuery:
simplecron.restart(); for (var i=1; i<3000; i++)
$("#work").html('BENCHMARK WORK');
var ht = simplecron.duration();
simplecron.restart(); for (var i=1; i<3000; i++)
$("#work").text('BENCHMARK WORK');
alert("JQuery (3000x): \nhtml="+ht+"\ntext="+simplecron.duration());
// Using pure JavaScript only:
simplecron.restart(); for (var i=1; i<3000; i++)
document.getElementById('work').innerHTML = 'BENCHMARK WORK';
ht = simplecron.duration();
simplecron.restart(); for (var i=1; i<3000; i++)
document.getElementById('work').nodeValue = 'BENCHMARK WORK';
alert("Pure JS (3000x):\ninnerHTML="+ht+"\nnodeValue="+simplecron.duration());
HashMap doesnt maintain any order, so if you want any kind of ordering, you need to store that in something else, which is a map and can have some kind of ordering, like LinkedHashMap
below is a simple program, by which you can sort by key, value, ascending ,descending ..( if you modify the compactor, you can use any kind of ordering, on keys and values)
package com.edge.collection.map;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
public class SortMapByKeyValue {
Map<String, Integer> map = new HashMap<String, Integer>();
public static void main(String[] args) {
SortMapByKeyValue smkv = new SortMapByKeyValue();
smkv.createMap();
System.out.println("After sorting by key ascending order......");
smkv.sortByKey(true);
System.out.println("After sorting by key descindeng order......");
smkv.sortByKey(false);
System.out.println("After sorting by value ascending order......");
smkv.sortByValue(true);
System.out.println("After sorting by value descindeng order......");
smkv.sortByValue(false);
}
void createMap() {
map.put("B", 55);
map.put("A", 80);
map.put("D", 20);
map.put("C", 70);
map.put("AC", 70);
map.put("BC", 70);
System.out.println("Before sorting......");
printMap(map);
}
void sortByValue(boolean order) {
List<Entry<String, Integer>> list = new LinkedList<Entry<String, Integer>>(map.entrySet());
Collections.sort(list, new Comparator<Entry<String, Integer>>() {
public int compare(Entry<String, Integer> o1, Entry<String, Integer> o2) {
if (order) {
return o1.getValue().compareTo(o2.getValue());
} else {
return o2.getValue().compareTo(o1.getValue());
}
}
});
Map<String, Integer> sortedMap = new LinkedHashMap<String, Integer>();
for (Entry<String, Integer> entry : list) {
sortedMap.put(entry.getKey(), entry.getValue());
}
printMap(sortedMap);
}
void sortByKey(boolean order) {
List<Entry<String, Integer>> list = new LinkedList<Entry<String, Integer>>(map.entrySet());
Collections.sort(list, new Comparator<Entry<String, Integer>>() {
public int compare(Entry<String, Integer> o1, Entry<String, Integer> o2) {
if (order) {
return o1.getKey().compareTo(o2.getKey());
} else {
return o2.getKey().compareTo(o1.getKey());
}
}
});
Map<String, Integer> sortedMap = new LinkedHashMap<String, Integer>();
for (Entry<String, Integer> entry : list) {
sortedMap.put(entry.getKey(), entry.getValue());
}
printMap(sortedMap);
}
public void printMap(Map<String, Integer> map) {
// System.out.println(map);
for (Entry<String, Integer> entry : map.entrySet()) {
System.out.println(entry.getKey() + " : " + entry.getValue());
}
}
}
here is the git link
My answer is according to the documentation, which works fine.
1) In xml file include android:onClick="onRadioButtonClicked"
as shown below:
<RadioGroup
android:id="@+id/rg1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center">
<RadioButton
android:id="@+id/b1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="onCreateOptionsMenu()"
android:onClick="onRadioButtonClicked"
/>
<RadioButton
android:id="@+id/b2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="onCreateMenu()"
android:onClick="onRadioButtonClicked"
/>
</RadioGroup>
2) In Java file implement onRadioButtonClicked
method outside onCreate()
method as shown below:
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch(view.getId()) {
case R.id.b1:
if (checked)
{
Log.e("b1", "b1" );
break;
}
case R.id.b2:
if (checked)
break;
}
}
The thing you are missing is that T
and interface{}
which holds a value of T
have different representations in memory so can't be trivially converted.
A variable of type T
is just its value in memory. There is no associated type information (in Go every variable has a single type known at compile time not at run time). It is represented in memory like this:
An interface{}
holding a variable of type T
is represented in memory like this
T
So coming back to your original question: why go does't implicitly convert []T
to []interface{}
?
Converting []T
to []interface{}
would involve creating a new slice of interface {}
values which is a non-trivial operation since the in-memory layout is completely different.
file Sfx.swift
import AVFoundation
public let sfx = Sfx.shared
public final class Sfx: NSObject {
static let shared = Sfx()
var apCheer: AVAudioPlayer? = nil
private override init() {
guard let s = Bundle.main.path(forResource: "cheer", ofType: "mp3") else {
return print("Sfx woe")
}
do {
apComment = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: s))
} catch {
return print("Sfx woe")
}
}
func cheer() { apCheer?.play() }
func plonk() { apPlonk?.play() }
func crack() { apCrack?.play() } .. etc
}
Anywhere at all in code
sfx.explosion()
sfx.cheer()
That should do the trick :
byte[] bytes = toByteArray(Str.toCharArray());
public static byte[] toByteArray(char[] array) {
return toByteArray(array, Charset.defaultCharset());
}
public static byte[] toByteArray(char[] array, Charset charset) {
CharBuffer cbuf = CharBuffer.wrap(array);
ByteBuffer bbuf = charset.encode(cbuf);
return bbuf.array();
}
Actually, a Swing component does have multiple dimensions, as:
SetBounds is a shortcut for setting current size plus location of the widget if you don't use any layout manager.
If you use a layout manager, it is the responsibility of the layout manager to lay out your components, taking into account the preferred size you set, and ensuring that the comonent never gets smaller than its minimumSize or bigger than its maximumSize.
In this case, the layoutManager will call setSize (or setBounds), and you can not really control the position or dimension of the component.
The whole point of using a layout manager is to have a platform and window-size independent way of laying out your components automatically, therefore you don't expect to call setSize from your code.
(Personal comment: There are buggy layout managers, I personally hate all of them and rolled my own, which offers the flexibility of MigLayout without the learning curve.)
If it is MySql you can try
SELECT @n := @n + 1 n,
first_name,
last_name
FROM table1, (SELECT @n := 0) m
ORDER BY first_name, last_name
And for SQLServer
SELECT row_number() OVER (ORDER BY first_name, last_name) n,
first_name,
last_name
FROM table1
For sorting narrow range of integers try Counting sort, which has a complexity of O(range + n)
, where n
is number of items to be sorted. If you'd like to sort something not discrete use optimal n*log(n) algorithms (quicksort, heapsort, mergesort). Merge sort is also used in a method already mentioned by other responses Arrays.sort
. There is no simple way how to recommend some algorithm or function call, because there are dozens of special cases, where you would use some sort, but not the other.
So please specify the exact purpose of your application (to learn something (well - start with the insertion sort or bubble sort), effectivity for integers (use counting sort), effectivity and reusability for structures (use n*log(n) algorithms), or zou just want it to be somehow sorted - use Arrays.sort :-)). If you'd like to sort string representations of integers, than u might be interrested in radix sort....
It's not that hard:
def escapeSpecialCharacters ( text, characters ):
for character in characters:
text = text.replace( character, '\\' + character )
return text
>>> escapeSpecialCharacters( 'I\'m "stuck" :\\', '\'"' )
'I\\\'m \\"stuck\\" :\\'
>>> print( _ )
I\'m \"stuck\" :\
Use the below format, it would work on all the browsers
var year = 2016;
var month = 02; // month varies from 0-11 (Jan-Dec)
var day = 23;
month = month<10?"0"+month:month; // to ensure YYYY-MM-DD format
day = day<10?"0"+day:day;
dateObj = new Date(year+"-"+month+"-"+day);
alert(dateObj);
//Your output would look like this "Wed Mar 23 2016 00:00:00 GMT+0530 (IST)"
//Note this would be in the current timezone in this case denoted by IST, to convert to UTC timezone you can include
alert(dateObj.toUTCSting);
//Your output now would like this "Tue, 22 Mar 2016 18:30:00 GMT"
Note that now the dateObj shows the time in GMT format, also note that the date and time have been changed correspondingly.
The "toUTCSting" function retrieves the corresponding time at the Greenwich meridian. This it accomplishes by establishing the time difference between your current timezone to the Greenwich Meridian timezone.
In the above case the time before conversion was 00:00 hours and minutes on the 23rd of March in the year 2016. And after conversion from GMT+0530 (IST) hours to GMT (it basically subtracts 5.30 hours from the given timestamp in this case) the time reflects 18.30 hours on the 22nd of March in the year 2016 (exactly 5.30 hours behind the first time).
Further to convert any date object to timestamp you can use
alert(dateObj.getTime());
//output would look something similar to this "1458671400000"
This would give you the unique timestamp of the time
I had the same problem on my Ubuntu 14.04 when tried to install TopTracker. I got such errors:
/usr/share/toptracker/bin/TopTracker: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version 'CXXABI_1.3.8' not found (required by /usr/share/toptracker/bin/TopTracker) /usr/share/toptracker/bin/TopTracker: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version 'GLIBCXX_3.4.21' not found (required by /usr/share/toptracker/bin/TopTracker) /usr/share/toptracker/bin/TopTracker: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version 'CXXABI_1.3.9' not found (required by /usr/share/toptracker/bin/TopTracker)
But I then installed gcc 4.9 version and problem gone:
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-4.9 g++-4.9
Statement stmt3 = con.createStatement();
ResultSet rs3 = stmt3.executeQuery("SELECT COUNT(*) AS count FROM "+lastTempTable+" ;");
count = rs3.getInt("count");
For Mac OS X Yosemite I was able to use the open command.
Usage: open [-e] [-t] [-f] [-W] [-R] [-n] [-g] [-h] [-b <bundle identifier>] [-a <application>] [filenames] [--args arguments]
Help: Open opens files from a shell.
By default, opens each file using the default application for that file.
If the file is in the form of a URL, the file will be opened as a URL.
Options:
-a Opens with the specified application.
-b Opens with the specified application bundle identifier.
-e Opens with TextEdit.
-t Opens with default text editor.
-f Reads input from standard input and opens with TextEdit.
-F --fresh Launches the app fresh, that is, without restoring windows. Saved persistent state is lost, excluding Untitled documents.
-R, --reveal Selects in the Finder instead of opening.
-W, --wait-apps Blocks until the used applications are closed (even if they were already running).
--args All remaining arguments are passed in argv to the application's main() function instead of opened.
-n, --new Open a new instance of the application even if one is already running.
-j, --hide Launches the app hidden.
-g, --background Does not bring the application to the foreground.
-h, --header Searches header file locations for headers matching the given filenames, and opens them.
This worked for me:
open eclipse.app --args clean
\d{10}
I believe that should do it
This answer is all about authorization and it is a complement of my previous answer about authentication
Why another answer? I attempted to expand my previous answer by adding details on how to support JSR-250 annotations. However the original answer became the way too long and exceeded the maximum length of 30,000 characters. So I moved the whole authorization details to this answer, keeping the other answer focused on performing authentication and issuing tokens.
@Secured
annotationBesides authentication flow shown in the other answer, role-based authorization can be supported in the REST endpoints.
Create an enumeration and define the roles according to your needs:
public enum Role {
ROLE_1,
ROLE_2,
ROLE_3
}
Change the @Secured
name binding annotation created before to support roles:
@NameBinding
@Retention(RUNTIME)
@Target({TYPE, METHOD})
public @interface Secured {
Role[] value() default {};
}
And then annotate the resource classes and methods with @Secured
to perform the authorization. The method annotations will override the class annotations:
@Path("/example")
@Secured({Role.ROLE_1})
public class ExampleResource {
@GET
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
public Response myMethod(@PathParam("id") Long id) {
// This method is not annotated with @Secured
// But it's declared within a class annotated with @Secured({Role.ROLE_1})
// So it only can be executed by the users who have the ROLE_1 role
...
}
@DELETE
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
@Secured({Role.ROLE_1, Role.ROLE_2})
public Response myOtherMethod(@PathParam("id") Long id) {
// This method is annotated with @Secured({Role.ROLE_1, Role.ROLE_2})
// The method annotation overrides the class annotation
// So it only can be executed by the users who have the ROLE_1 or ROLE_2 roles
...
}
}
Create a filter with the AUTHORIZATION
priority, which is executed after the AUTHENTICATION
priority filter defined previously.
The ResourceInfo
can be used to get the resource Method
and resource Class
that will handle the request and then extract the @Secured
annotations from them:
@Secured
@Provider
@Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
@Context
private ResourceInfo resourceInfo;
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
// Get the resource class which matches with the requested URL
// Extract the roles declared by it
Class<?> resourceClass = resourceInfo.getResourceClass();
List<Role> classRoles = extractRoles(resourceClass);
// Get the resource method which matches with the requested URL
// Extract the roles declared by it
Method resourceMethod = resourceInfo.getResourceMethod();
List<Role> methodRoles = extractRoles(resourceMethod);
try {
// Check if the user is allowed to execute the method
// The method annotations override the class annotations
if (methodRoles.isEmpty()) {
checkPermissions(classRoles);
} else {
checkPermissions(methodRoles);
}
} catch (Exception e) {
requestContext.abortWith(
Response.status(Response.Status.FORBIDDEN).build());
}
}
// Extract the roles from the annotated element
private List<Role> extractRoles(AnnotatedElement annotatedElement) {
if (annotatedElement == null) {
return new ArrayList<Role>();
} else {
Secured secured = annotatedElement.getAnnotation(Secured.class);
if (secured == null) {
return new ArrayList<Role>();
} else {
Role[] allowedRoles = secured.value();
return Arrays.asList(allowedRoles);
}
}
}
private void checkPermissions(List<Role> allowedRoles) throws Exception {
// Check if the user contains one of the allowed roles
// Throw an Exception if the user has not permission to execute the method
}
}
If the user has no permission to execute the operation, the request is aborted with a 403
(Forbidden).
To know the user who is performing the request, see my previous answer. You can get it from the SecurityContext
(which should be already set in the ContainerRequestContext
) or inject it using CDI, depending on the approach you go for.
If a @Secured
annotation has no roles declared, you can assume all authenticated users can access that endpoint, disregarding the roles the users have.
Alternatively to defining the roles in the @Secured
annotation as shown above, you could consider JSR-250 annotations such as @RolesAllowed
, @PermitAll
and @DenyAll
.
JAX-RS doesn't support such annotations out-of-the-box, but it could be achieved with a filter. Here are a few considerations to keep in mind if you want to support all of them:
@DenyAll
on the method takes precedence over @RolesAllowed
and @PermitAll
on the class.@RolesAllowed
on the method takes precedence over @PermitAll
on the class.@PermitAll
on the method takes precedence over @RolesAllowed
on the class.@DenyAll
can't be attached to classes.@RolesAllowed
on the class takes precedence over @PermitAll
on the class.So an authorization filter that checks JSR-250 annotations could be like:
@Provider
@Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
@Context
private ResourceInfo resourceInfo;
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
Method method = resourceInfo.getResourceMethod();
// @DenyAll on the method takes precedence over @RolesAllowed and @PermitAll
if (method.isAnnotationPresent(DenyAll.class)) {
refuseRequest();
}
// @RolesAllowed on the method takes precedence over @PermitAll
RolesAllowed rolesAllowed = method.getAnnotation(RolesAllowed.class);
if (rolesAllowed != null) {
performAuthorization(rolesAllowed.value(), requestContext);
return;
}
// @PermitAll on the method takes precedence over @RolesAllowed on the class
if (method.isAnnotationPresent(PermitAll.class)) {
// Do nothing
return;
}
// @DenyAll can't be attached to classes
// @RolesAllowed on the class takes precedence over @PermitAll on the class
rolesAllowed =
resourceInfo.getResourceClass().getAnnotation(RolesAllowed.class);
if (rolesAllowed != null) {
performAuthorization(rolesAllowed.value(), requestContext);
}
// @PermitAll on the class
if (resourceInfo.getResourceClass().isAnnotationPresent(PermitAll.class)) {
// Do nothing
return;
}
// Authentication is required for non-annotated methods
if (!isAuthenticated(requestContext)) {
refuseRequest();
}
}
/**
* Perform authorization based on roles.
*
* @param rolesAllowed
* @param requestContext
*/
private void performAuthorization(String[] rolesAllowed,
ContainerRequestContext requestContext) {
if (rolesAllowed.length > 0 && !isAuthenticated(requestContext)) {
refuseRequest();
}
for (final String role : rolesAllowed) {
if (requestContext.getSecurityContext().isUserInRole(role)) {
return;
}
}
refuseRequest();
}
/**
* Check if the user is authenticated.
*
* @param requestContext
* @return
*/
private boolean isAuthenticated(final ContainerRequestContext requestContext) {
// Return true if the user is authenticated or false otherwise
// An implementation could be like:
// return requestContext.getSecurityContext().getUserPrincipal() != null;
}
/**
* Refuse the request.
*/
private void refuseRequest() {
throw new AccessDeniedException(
"You don't have permissions to perform this action.");
}
}
Note: The above implementation is based on the Jersey RolesAllowedDynamicFeature
. If you use Jersey, you don't need to write your own filter, just use the existing implementation.
You have no shell at /bin/sh? Have you tried docker run -it pensu/busybox /usr/bin/sh
?
Set return type to Void
instead of void
and return null
// Modify existing method
public static Void displayInt(Integer i) {
System.out.println(i);
return null;
}
OR
// Or use Lambda
myForEach(theList, i -> {System.out.println(i);return null;});
As Strings are immutable, when you do:
String a = "xyz"
while creating the string, the JVM searches in the pool of strings if there already exists a string value "xyz"
, if so 'a'
will simply be a reference of that string and no new String object is created.
But if you say:
String a = new String("xyz")
you force JVM to create a new String
reference, even if "xyz"
is in its pool.
For more information read this.
enumerate
is what you want:
for i, s in enumerate(S):
print s, i
I had the same problem. I made a simple UIView category that fixes that.
.h
#import <UIKit/UIKit.h>
@interface UIView (GCLibrary)
@property (nonatomic, assign) CGFloat height;
@property (nonatomic, assign) CGFloat width;
@property (nonatomic, assign) CGFloat x;
@property (nonatomic, assign) CGFloat y;
@end
.m
#import "UIView+GCLibrary.h"
@implementation UIView (GCLibrary)
- (CGFloat) height {
return self.frame.size.height;
}
- (CGFloat) width {
return self.frame.size.width;
}
- (CGFloat) x {
return self.frame.origin.x;
}
- (CGFloat) y {
return self.frame.origin.y;
}
- (CGFloat) centerY {
return self.center.y;
}
- (CGFloat) centerX {
return self.center.x;
}
- (void) setHeight:(CGFloat) newHeight {
CGRect frame = self.frame;
frame.size.height = newHeight;
self.frame = frame;
}
- (void) setWidth:(CGFloat) newWidth {
CGRect frame = self.frame;
frame.size.width = newWidth;
self.frame = frame;
}
- (void) setX:(CGFloat) newX {
CGRect frame = self.frame;
frame.origin.x = newX;
self.frame = frame;
}
- (void) setY:(CGFloat) newY {
CGRect frame = self.frame;
frame.origin.y = newY;
self.frame = frame;
}
@end
Yes! Here is how you set it up.
Create a Remote run configuration:
The configuration above provides three read-only fields. These are options that tell the JVM to open up port 5005 for remote debugging when running your application. Add the appropriate one to the JVM options of the application you are debugging. One way you might do this would be like so:
export JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005"
But it depends on how your run your application. If you're not sure which of the three applies to you, start with the first and go down the list until you find the one that works.
You can change suspend=n
to suspend=y
to force your application to wait until you connect with IntelliJ before it starts up. This is helpful if the breakpoint you want to hit occurs on application startup.
Start your application as you would normally, then in IntelliJ select the new configuration and hit 'Debug'.
IntelliJ will connect to the JVM and initiate remote debugging.
You can now debug the application by adding breakpoints to your code where desired. The output of the application will still appear wherever it did before, but your breakpoints will hit in IntelliJ.
The best sorting technique of all generally depends upon the size of an array. Merge sort can be the best of all as it manages better space and time complexity according to the Big-O algorithm (This suits better for a large array).
After some experimentation I have found that rotating an orientation aware device will always trigger a browser window's resize
event. So in your resize handler simply call a function like:
function is_landscape() {
return (window.innerWidth > window.innerHeight);
}
I had a similar problem and it was related to the version. In a python terminal check:
>> import xlrd
>> xlrd.__VERSION__
If you have '0.9.0' you can open almost all files. If you have '0.6.0' which was what I found on Ubuntu, you may have problems with newest Excel files. You can download the latest version of xlrd using the Distutils standard.
In the MySQL interactive client you can type:
source yourfile.sql
Alternatively you can pipe the data into mysql from the command line:
mysql < yourfile.sql
If the file doesn't specify a database then you will also need to add that:
mysql db_name < yourfile.sql
See the documentation for more details:
@ Original Poster - see inline comments.
public class demo
{
public static void main(String a[])
{
B b = (B) new A(); // compiles with the cast, but runtime exception - java.lang.ClassCastException
//- A subclass variable cannot hold a reference to a superclass variable. so, the above statement will not work.
//For downcast, what you need is a superclass ref containing a subclass object.
A superClassRef = new B();//just for the sake of illustration
B subClassRef = (B)superClassRef; // Valid downcast.
}
}
class A
{
public void draw()
{
System.out.println("1");
}
public void draw1()
{
System.out.println("2");
}
}
class B extends A
{
public void draw()
{
System.out.println("3");
}
public void draw2()
{
System.out.println("4");
}
}
this helps for me:
on your build.gradle:
implementation 'com.android.support:design:28.0.0'
My case had a different solution. The client was using basichttpsbinding[1] and the service was using wshttpbinding.
I resolved the problem by changing the server binding to basichttpsbinding. Also, i had to set target framework to 4.5 by adding:
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5"/>
</system.web>
[1] the comunication was over https.
I disagree with the advice given here - even the reference for the accepted answer concludes:
You can of course use query string parameters with HTTPS, but don’t use them for anything that could present a security problem. For example, you could safely use them to identity part numbers or types of display like ‘accountview’ or ‘printpage’, but don’t use them for passwords, credit card numbers or other pieces of information that should not be publicly available.
So, no they aren't really safe...!
Setting CommandTimeout to 120 is not recommended. Try using pagination as mentioned above. Setting CommandTimeout to 30 is considered as normal. Anything more than that is consider bad approach and that usually concludes something wrong with the Implementation. Now the world is running on MiliSeconds Approach.
Use JSON classes for parsing e.g
JSONObject mainObject = new JSONObject(Your_Sring_data);
JSONObject uniObject = mainObject.getJSONObject("university");
String uniName = uniObject.getString("name");
String uniURL = uniObject.getString("url");
JSONObject oneObject = mainObject.getJSONObject("1");
String id = oneObject.getString("id");
....
const initialState = {
a: '',
b: '',
c: ''
};
class ExampleComponent extends Component {
state = { ...initialState } // use spread operator to avoid mutation
handleReset = this.handleReset.bind(this);
handleReset() {
this.setState(initialState);
}
}
Remember that in order to be able to reset the state it is important not to mutate initialState.
state = {...initialState} // GOOD
// => state points to a new obj in memory which has the values of initialState
state = initialState // BAD
// => they point to the same obj in memory
The most convenient way would be to use ES6 Spread Operator. But you could also use Object.assign instead. They would both achieve the same.
state = Object.assign({}, initialState); // GOOD
state = {...initialState}; // GOOD
You may be looking for the type()
built-in function.
See the examples below, but there's no "unsigned" type in Python just like Java.
Positive integer:
>>> v = 10
>>> type(v)
<type 'int'>
Large positive integer:
>>> v = 100000000000000
>>> type(v)
<type 'long'>
Negative integer:
>>> v = -10
>>> type(v)
<type 'int'>
Literal sequence of characters:
>>> v = 'hi'
>>> type(v)
<type 'str'>
Floating point integer:
>>> v = 3.14159
>>> type(v)
<type 'float'>
If you installed using the graphical installer by BigSQL from the official postgres site and if you installed in the default location...
You can find your uninstaller in your home directory: /Users/<yourusername/PostGreSQL/uninstall/
For those who are using this format all the timme like me I did an extension method. I just wanted to share because I think it can be usefull to you.
/// <summary>
/// Convert a date to a human readable ISO datetime format. ie. 2012-12-12 23:01:12
/// this method must be put in a static class. This will appear as an available function
/// on every datetime objects if your static class namespace is declared.
/// </summary>
public static string ToIsoReadable(this DateTime dateTime)
{
return dateTime.ToString("yyyy-MM-dd HH':'mm':'ss");
}
use ack its simple.
just type ack <string to be searched>
C/C++ standard library <stdlib.h>
contains qsort
function.
This is not the best quick sort implementation in the world but it fast enough and VERY EASY to be used... the formal syntax of qsort is:
qsort(<arrayname>,<size>,sizeof(<elementsize>),compare_function);
The only thing that you need to implement is the compare_function, which takes in two arguments of type "const void", which can be cast to appropriate data structure, and then return one of these three values:
1. Comparing a list of integers:
simply cast a and b to integers
if x < y
,x-y
is negative, x == y
, x-y = 0
, x > y
, x-y
is positive
x-y
is a shortcut way to do it :)
reverse *x - *y
to *y - *x
for sorting in decreasing/reverse order
int compare_function(const void *a,const void *b) {
int *x = (int *) a;
int *y = (int *) b;
return *x - *y;
}
2. Comparing a list of strings:
For comparing string, you need strcmp
function inside <string.h>
lib.
strcmp
will by default return -ve,0,ve appropriately... to sort in reverse order, just reverse the sign returned by strcmp
#include <string.h>
int compare_function(const void *a,const void *b) {
return (strcmp((char *)a,(char *)b));
}
3. Comparing floating point numbers:
int compare_function(const void *a,const void *b) {
double *x = (double *) a;
double *y = (double *) b;
// return *x - *y; // this is WRONG...
if (*x < *y) return -1;
else if (*x > *y) return 1; return 0;
}
4. Comparing records based on a key:
Sometimes you need to sort a more complex stuffs, such as record. Here is the simplest
way to do it using qsort
library.
typedef struct {
int key;
double value;
} the_record;
int compare_function(const void *a,const void *b) {
the_record *x = (the_record *) a;
the_record *y = (the_record *) b;
return x->key - y->key;
}
Simply use:
int ans = Integer.parseInt( JOptionPane.showInputDialog(frame,
"Text",
JOptionPane.INFORMATION_MESSAGE,
null,
null,
"[sample text to help input]"));
You cannot cast a String
to an int
, but you can convert it using Integer.parseInt(string)
.
Using jQuery's .is( ":focus" )
$(".status").on("click","textarea",function(){
if ($(this).is( ":focus" )) {
// fire this step
}else{
$(this).focus();
// fire this step
}
Found the answer in How to lay out Views in RelativeLayout programmatically?
We should explicitly set id's using setId(). Only then, RIGHT_OF rules make sense.
Another mistake I did is, reusing the layoutparams object between the controls. We should create new object for each control
@Zelazny7's answer works, but if you want to keep ties you could do:
df[which(df$Amount == min(df$Amount)), ]
For example with the following data frame:
df <- data.frame(Name = c("A", "B", "C", "D", "E"),
Amount = c(150, 120, 175, 160, 120))
df[which.min(df$Amount), ]
# Name Amount
# 2 B 120
df[which(df$Amount == min(df$Amount)), ]
# Name Amount
# 2 B 120
# 5 E 120
Edit: If there are NAs in the Amount
column you can do:
df[which(df$Amount == min(df$Amount, na.rm = TRUE)), ]
I am summarizing the steps that helped me in resolving this issue:
During installation, IIS Express uses Http.sys to reserve ports 44300 through 44399 for SSL use. This enables standard users (without elevated privileges) of IISExpress to configure and use SSL. For more details on this refer here
netsh http show sslcert > sslcert.txt
IP:port : 0.0.0.0:44300
Certificate Hash : eb380ba6bd10fb4f597cXXXXXXXXXX
Application ID : {214124cd-d05b-4309-XXX-XXXXXXX}
(Click on the ServerRoot -> under section IIS () -> Open the Server Certificates)
netsh http delete sslcert ipport=0.0.0.0:44300
netsh http add sslcert ipport=0.0.0.0:44300 certhash=New_Certificate_Hash_without_space appid={214124cd-d05b-4309-XXX-XXXXXXX}
The New_Certificate_Hash will be your default certificate tied-up with your localhost (That we found in step 4) or the one which you want to add as a new certificate.
P.S. Thank you for your answer uos?? (which helped me in resolving this issue)
You can achieve fall through like c++ by the goto keyword.
EX:
switch(num)
{
case 1:
goto case 3;
case 2:
goto case 3;
case 3:
//do something
break;
case 4:
//do something else
break;
case default:
break;
}
If you want to include both - accept on enter and accept on click then do -
<div class="form-group">
<input class="form-control" type="text"
name="search" placeholder="Enter Search Text"
[(ngModel)]="filterdata"
(keyup.enter)="searchByText(filterdata)">
<button type="submit"
(click)="searchByText(filterdata)" >
</div>
Not sure why no one mentioned to just use the built-in sticky header style for elements. Worked great for me.
.tableContainerDiv {
overflow: auto;
max-height: 80em;
}
th {
position: sticky;
top: 0;
background: white;
}
Put a min-width on the in @media if you need to make responsive (or similar).
see Table headers position:sticky or Position Sticky and Table Headers
Assigning a class name and applying a CSS style are two different things.
If you mean <img class="someclass">
, and
.someclass {
[cssrule]
}
, then there is no real performance difference between applying the css to the class, or to .column img
This will work..
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
set the attribute, not a property
$("#ms_num").attr("maxlength", 6);
/**
* Replaces any parameter placeholders in a query with the value of that
* parameter. Useful for debugging. Assumes anonymous parameters from
* $params are are in the same order as specified in $query
*
* @param string $query The sql query with parameter placeholders
* @param array $params The array of substitution parameters
* @return string The interpolated query
*/
public static function interpolateQuery($query, $params) {
$keys = array();
# build a regular expression for each parameter
foreach ($params as $key => $value) {
if (is_string($key)) {
$keys[] = '/:'.$key.'/';
} else {
$keys[] = '/[?]/';
}
}
$query = preg_replace($keys, $params, $query, 1, $count);
#trigger_error('replaced '.$count.' keys');
return $query;
}
List<Conversation> conversations = **jdbcTemplate**.**queryForList**(
**SQL_QUERY**,
new Object[] {userId, dateFrom, dateTo}); //placeholders values
Suppose the sql query is like
SQL_QUERY = "**select** info,count(*),IF(info is null , 'DATA' , 'NO DATA') **from** table where userId=? , dateFrom=? , dateTo=?";
**HERE userId=? , dateFrom=? , dateTo=?**
the question marks are place holders
**SQL_QUERY**,
new Object[] {userId, dateFrom, dateTo});
It will go as an object array along with the sql query
In Tomcat6, You can conditionally enable from your HTTP Listener Class:
public void contextInitialized(ServletContextEvent event) {
if (Boolean.getBoolean("HTTP_ONLY_SESSION")) HttpOnlyConfig.enable(event);
}
Using this class
import java.lang.reflect.Field;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import org.apache.catalina.core.StandardContext;
public class HttpOnlyConfig
{
public static void enable(ServletContextEvent event)
{
ServletContext servletContext = event.getServletContext();
Field f;
try
{ // WARNING TOMCAT6 SPECIFIC!!
f = servletContext.getClass().getDeclaredField("context");
f.setAccessible(true);
org.apache.catalina.core.ApplicationContext ac = (org.apache.catalina.core.ApplicationContext) f.get(servletContext);
f = ac.getClass().getDeclaredField("context");
f.setAccessible(true);
org.apache.catalina.core.StandardContext sc = (StandardContext) f.get(ac);
sc.setUseHttpOnly(true);
}
catch (Exception e)
{
System.err.print("HttpOnlyConfig cant enable");
e.printStackTrace();
}
}
}
I'd like to supplement BalusC's answer with the mapping rules and an example.
Mapping rules from Servlet 2.5 specification:
In our example, there're three servlets. / is the default servlet installed by us. Tomcat installs two servlets to serve jsp and jspx. So to map http://host:port/context/hello
To map http://host:port/context/hello.jsp
Could you try something like this for example I think what you are wanting to utilize is the port.ReadExisting() Method
using System;
using System.IO.Ports;
class SerialPortProgram
{
// Create the serial port with basic settings
private SerialPort port = new SerialPort("COM1",
9600, Parity.None, 8, StopBits.One);
[STAThread]
static void Main(string[] args)
{
// Instatiate this
SerialPortProgram();
}
private static void SerialPortProgram()
{
Console.WriteLine("Incoming Data:");
// Attach a method to be called when there
// is data waiting in the port's buffer
port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);
// Begin communications
port.Open();
// Enter an application loop to keep this thread alive
Console.ReadLine();
}
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
// Show all the incoming data in the port's buffer
Console.WriteLine(port.ReadExisting());
}
}
Or is you want to do it based on what you were trying to do , you can try this
public class MySerialReader : IDisposable
{
private SerialPort serialPort;
private Queue<byte> recievedData = new Queue<byte>();
public MySerialReader()
{
serialPort = new SerialPort();
serialPort.Open();
serialPort.DataReceived += serialPort_DataReceived;
}
void serialPort_DataReceived(object s, SerialDataReceivedEventArgs e)
{
byte[] data = new byte[serialPort.BytesToRead];
serialPort.Read(data, 0, data.Length);
data.ToList().ForEach(b => recievedData.Enqueue(b));
processData();
}
void processData()
{
// Determine if we have a "packet" in the queue
if (recievedData.Count > 50)
{
var packet = Enumerable.Range(0, 50).Select(i => recievedData.Dequeue());
}
}
public void Dispose()
{
if (serialPort != null)
{
serialPort.Dispose();
}
}
Use java.time.Instant
class to parse text in standard ISO 8601 format, representing a moment in UTC.
Instant.parse( "2010-10-02T12:23:23Z" )
That format is defined by the ISO 8601 standard for date-time string formats.
Both:
…use ISO 8601 formats by default for parsing and generating strings.
You should generally avoid using the old java.util.Date/.Calendar & java.text.SimpleDateFormat classes as they are notoriously troublesome, confusing, and flawed. If required for interoperating, you can convert to and fro.
Built into Java 8 and later is the new java.time framework. Inspired by Joda-Time, defined by JSR 310, and extended by the ThreeTen-Extra project.
Instant instant = Instant.parse( "2010-10-02T12:23:23Z" ); // `Instant` is always in UTC.
Convert to the old class.
java.util.Date date = java.util.Date.from( instant ); // Pass an `Instant` to the `from` method.
Time Zone
If needed, you can assign a time zone.
ZoneId zoneId = ZoneId.of( "America/Montreal" ); // Define a time zone rather than rely implicitly on JVM’s current default time zone.
ZonedDateTime zdt = ZonedDateTime.ofInstant( instant , zoneId ); // Assign a time zone adjustment from UTC.
Convert.
java.util.Date date = java.util.Date.from( zdt.toInstant() ); // Extract an `Instant` from the `ZonedDateTime` to pass to the `from` method.
UPDATE: The Joda-Time project is now in maintenance mode. The team advises migration to the java.time classes.
Here is some example code in Joda-Time 2.8.
org.joda.time.DateTime dateTime_Utc = new DateTime( "2010-10-02T12:23:23Z" , DateTimeZone.UTC ); // Specifying a time zone to apply, rather than implicitly assigning the JVM’s current default.
Convert to old class. Note that the assigned time zone is lost in conversion, as j.u.Date cannot be assigned a time zone.
java.util.Date date = dateTime_Utc.toDate(); // The `toDate` method converts to old class.
Time Zone
If needed, you can assign a time zone.
DateTimeZone zone = DateTimeZone.forID( "America/Montreal" );
DateTime dateTime_Montreal = dateTime_Utc.withZone ( zone );
The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date
, Calendar
, & SimpleDateFormat
.
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.*
classes.
Where to obtain the java.time classes?
The ThreeTen-Extra project extends java.time with additional classes. This project is a proving ground for possible future additions to java.time. You may find some useful classes here such as Interval
, YearWeek
, YearQuarter
, and more.
Your most elegant solution must be:
var left: Node? = null
fun show() {
left?.also {
queue.add( it )
}
}
Then you don't have to define a new and unnecessary local variable, and you don't have any new assertions or casts (which are not DRY). Other scope functions could also work so choose your favourite.
Webkit browsers like Safari and Chrome subtract the scroll bar width from the visible page width when calculating width: 100% or 100vw. More at DM Rutherford's Scrolling and Page Width.
Try using overflow-y: overlay
instead.
You could have used DISTINCT
or just remove the PARTITION BY
portions and use GROUP BY
:
SELECT BrandId
,SUM(ICount)
,TotalICount = SUM(ICount) OVER ()
,Percentage = SUM(ICount) OVER ()*1.0 / SUM(ICount)
FROM Table
WHERE DateId = 20130618
GROUP BY BrandID
Not sure why you are dividing the total by the count per BrandID, if that's a mistake and you want percent of total then reverse those bits above to:
SELECT BrandId
,SUM(ICount)
,TotalICount = SUM(ICount) OVER ()
,Percentage = SUM(ICount)*1.0 / SUM(ICount) OVER ()
FROM Table
WHERE DateId = 20130618
GROUP BY BrandID
To define your own exceptions correctly, there are a few best practices that you should follow:
Define a base class inheriting from Exception
. This will allow to easily catch any exceptions related to the project:
class MyProjectError(Exception):
"""A base class for MyProject exceptions."""
Organizing the exception classes in a separate module (e.g. exceptions.py
) is generally a good idea.
To create a specific exception, subclass the base exception class.
To add support for extra argument(s) to a custom exception, define a custom __init__()
method with a variable number of arguments. Call the base class's __init__()
, passing any positional arguments to it (remember that BaseException
/Exception
expect any number of positional arguments):
class CustomError(MyProjectError):
def __init__(self, *args, **kwargs):
super().__init__(*args)
self.foo = kwargs.get('foo')
To raise such exception with an extra argument you can use:
raise CustomError('Something bad happened', foo='foo')
This design adheres to the Liskov substitution principle, since you can replace an instance of a base exception class with an instance of a derived exception class. Also, it allows you to create an instance of a derived class with the same parameters as the parent.
I got the same error.
The issue: I created a separate Workspace and added my existing project into it. I got the error when I worked on that Workspace.
The fix: Later I found that Workspace gets created automatically inside the existing project when dependencies are added. And have to work on that workspace.
<div class="col-md-12">
<p style="color: #28a745; font-weight: bold; font-size:25px; text-align: right " >Total Productos a pagar= {{ getTotal() }} {{ getResult() | currency }}
<button class="btn btn-success" type="submit" [disabled]="!getResult()" (click)="onSubmit()">
Ver Pedido
</button>
</p>
</div>
So what will happen if two threads attack a volatile primitive variable at same time?
Usually each one can increment the value. However sometime, both will update the value at the same time and instead of incrementing by 2 total, both thread increment by 1 and only 1 is added.
Does this mean that whosoever takes lock on it, that will be setting its value first.
There is no lock. That is what synchronized
is for.
And in if meantime, some other thread comes up and read old value while first thread was changing its value, then doesn't new thread will read its old value?
Yes,
What is the difference between Atomic and volatile keyword?
AtomicXxxx wraps a volatile so they are basically same, the difference is that it provides higher level operations such as CompareAndSwap which is used to implement increment.
AtomicXxxx also supports lazySet. This is like a volatile set, but doesn't stall the pipeline waiting for the write to complete. It can mean that if you read a value you just write you might see the old value, but you shouldn't be doing that anyway. The difference is that setting a volatile takes about 5 ns, bit lazySet takes about 0.5 ns.
I figured I'd leave this here for those upgrading to Turbolinks 5: the easiest way to fix your code is to go from:
var ready;
ready = function() {
// Your JS here
}
$(document).ready(ready);
$(document).on('page:load', ready)
to:
var ready;
ready = function() {
// Your JS here
}
$(document).on('turbolinks:load', ready);
Reference: https://github.com/turbolinks/turbolinks/issues/9#issuecomment-184717346
If you want something slightly more general, you can use the arguments variable like so:
function tryMe (param1, param2) {
alert(param1 + " and " + param2);
}
function callbackTester (callback) {
callback (arguments[1], arguments[2]);
}
callbackTester (tryMe, "hello", "goodbye");
But otherwise, your example works fine (arguments[0] can be used in place of callback in the tester)
public static Date getDateByString(String dateTime) {
if(dateTime==null || dateTime.isEmpty()) {
return null;
}
else{
String modified = dateTime + ".000+0000";
DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
Date dateObj = new Date();
Date dateObj1 = new Date();
try {
if (dateTime != null) {
dateObj = formatter.parse(modified);
}
} catch (ParseException e) {
e.printStackTrace();
}
return dateObj;
}
}
This is a variation on the answer above by @mtomis.
It creates a stream of lines. It emits 'data' and 'end' events, allowing you to handle the end of the stream.
var events = require('events');
var LineStream = function (input) {
var remaining = '';
input.on('data', function (data) {
remaining += data;
var index = remaining.indexOf('\n');
var last = 0;
while (index > -1) {
var line = remaining.substring(last, index);
last = index + 1;
this.emit('data', line);
index = remaining.indexOf('\n', last);
}
remaining = remaining.substring(last);
}.bind(this));
input.on('end', function() {
if (remaining.length > 0) {
this.emit('data', remaining);
}
this.emit('end');
}.bind(this));
}
LineStream.prototype = new events.EventEmitter;
Use it as a wrapper:
var lineInput = new LineStream(input);
lineInput.on('data', function (line) {
// handle line
});
lineInput.on('end', function() {
// wrap it up
});
While doing brew link node In addition I got the following issues as well:
Error: Could not symlink include/node /usr/local/include is not writable.
Linking /usr/local/Cellar/node/9.3.0... Error: Permission denied @ dir_s_mkdir - /usr/local/lib
To solve the above just go to /usr/local/ and check the availability of folders 'include' and 'lib', if those folders are not available just create them manually.
And run brew install node again
window.navigate
is NOT supported in some browsers, so that one should be avoided. Any of the other methods using the location property are the most reliable and consistent approach
I found this advice:
There are a few steps to solve your problem:
First thing to do is Clear items from the Office Clipboard. If the Microsoft Office Clipboard is not displayed in the task pane, click Office Clipboard on the Edit menu. On the Office Clipboard task pane, do one of the following: To clear all items, click Clear All .
Next thing is to switch off the clipboard show option. To do this, what you can do is to again display the Clipboard menu (select Office Clipboard from Edit Menu). And in the selection button "Options" at the bottom of the screen, select this particular option: "Collect Without Showing Office Clipboard"
and now, you are relieved of the bug.
Hope this helps.
here. I have the problem, but it's sporadic. I just tried the technique, and I don't see the problem, but since it's sporadic I won't know for a while if it's gone for good.
TL;DR use buffers to not use tons of memory.
We get to the crux of your problem, I believe, when we consider the memory implications of working with very large files. We don't want this bad boy to churn through 2 gigs of ram for a 2 gigabyte file so, as pasztorpisti points out, we gotta deal with those bigger files in chunks!
import sys
import hashlib
# BUF_SIZE is totally arbitrary, change for your app!
BUF_SIZE = 65536 # lets read stuff in 64kb chunks!
md5 = hashlib.md5()
sha1 = hashlib.sha1()
with open(sys.argv[1], 'rb') as f:
while True:
data = f.read(BUF_SIZE)
if not data:
break
md5.update(data)
sha1.update(data)
print("MD5: {0}".format(md5.hexdigest()))
print("SHA1: {0}".format(sha1.hexdigest()))
What we've done is we're updating our hashes of this bad boy in 64kb chunks as we go along with hashlib's handy dandy update method. This way we use a lot less memory than the 2gb it would take to hash the guy all at once!
You can test this with:
$ mkfile 2g bigfile
$ python hashes.py bigfile
MD5: a981130cf2b7e09f4686dc273cf7187e
SHA1: 91d50642dd930e9542c39d36f0516d45f4e1af0d
$ md5 bigfile
MD5 (bigfile) = a981130cf2b7e09f4686dc273cf7187e
$ shasum bigfile
91d50642dd930e9542c39d36f0516d45f4e1af0d bigfile
Hope that helps!
Also all of this is outlined in the linked question on the right hand side: Get MD5 hash of big files in Python
In general when writing python it helps to get into the habit of following pep-8. For example, in python variables are typically underscore separated not camelCased. But that's just style and no one really cares about those things except people who have to read bad style... which might be you reading this code years from now.
Why didn't anyone mentioned the method LocalDateTime.toEpochSecond()
:
LocalDateTime localDateTime = ... // whatever e.g. LocalDateTime.now()
long time2epoch = localDateTime.toEpochSecond(ZoneOffset.UTC);
This seems way shorter that many suggested answers above...
This is a highly inefficient way of doing it. You can use the merge
statement and then there's no need for cursors, looping or (if you can do without) PL/SQL.
MERGE INTO studLoad l
USING ( SELECT studId, studName FROM student ) s
ON (l.studId = s.studId)
WHEN MATCHED THEN
UPDATE SET l.studName = s.studName
WHERE l.studName != s.studName
WHEN NOT MATCHED THEN
INSERT (l.studID, l.studName)
VALUES (s.studId, s.studName)
Make sure you commit
, once completed, in order to be able to see this in the database.
To actually answer your question I would do it something like as follows. This has the benefit of doing most of the work in SQL and only updating based on the rowid, a unique address in the table.
It declares a type, which you place the data within in bulk, 10,000 rows at a time. Then processes these rows individually.
However, as I say this will not be as efficient as merge
.
declare
cursor c_data is
select b.rowid as rid, a.studId, a.studName
from student a
left outer join studLoad b
on a.studId = b.studId
and a.studName <> b.studName
;
type t__data is table of c_data%rowtype index by binary_integer;
t_data t__data;
begin
open c_data;
loop
fetch c_data bulk collect into t_data limit 10000;
exit when t_data.count = 0;
for idx in t_data.first .. t_data.last loop
if t_data(idx).rid is null then
insert into studLoad (studId, studName)
values (t_data(idx).studId, t_data(idx).studName);
else
update studLoad
set studName = t_data(idx).studName
where rowid = t_data(idx).rid
;
end if;
end loop;
end loop;
close c_data;
end;
/
Both join()
and concat()
way could solve the problem. However, there is one warning I have to mention: Reset the index before you join()
or concat()
if you trying to deal with some data frame by selecting some rows from another DataFrame.
One example below shows some interesting behavior of join and concat:
dat1 = pd.DataFrame({'dat1': range(4)})
dat2 = pd.DataFrame({'dat2': range(4,8)})
dat1.index = [1,3,5,7]
dat2.index = [2,4,6,8]
# way1 join 2 DataFrames
print(dat1.join(dat2))
# output
dat1 dat2
1 0 NaN
3 1 NaN
5 2 NaN
7 3 NaN
# way2 concat 2 DataFrames
print(pd.concat([dat1,dat2],axis=1))
#output
dat1 dat2
1 0.0 NaN
2 NaN 4.0
3 1.0 NaN
4 NaN 5.0
5 2.0 NaN
6 NaN 6.0
7 3.0 NaN
8 NaN 7.0
#reset index
dat1 = dat1.reset_index(drop=True)
dat2 = dat2.reset_index(drop=True)
#both 2 ways to get the same result
print(dat1.join(dat2))
dat1 dat2
0 0 4
1 1 5
2 2 6
3 3 7
print(pd.concat([dat1,dat2],axis=1))
dat1 dat2
0 0 4
1 1 5
2 2 6
3 3 7
you could do something like (below)
var query = from p in context.T1
join q in context.T2
on
new { p.Col1, p.Col2 }
equals
new { q.Col1, q.Col2 }
select new {p...., q......};
Here is a good solution:
if (variable == (int)variable) {
//logic
}
Using Kotlin and the android-ktx library, you can simply do
view.updatePadding(top = 42)
As per Google recent announcement, usage of the Google Maps APIs now requires a key. If you are using the Google Maps API on localhost or your domain was not active prior to June 22nd, 2016, it will require a key going forward. Please see the Google Maps APIs documentation to get a key and add it to your application.
Go to Tools >> Preferences >> IPython console >> Graphics >> Backend:Inline, change "Inline" to "Automatic", click "OK"
Reset the kernel at the console, and the plot will appear in a separate window
Keep in mind before use window and location
1.use window and location in client side render (Note:don't use in ssr)
window.location.host;
or
var host = window.location.protocol + "//" + window.location.host;
2.server side render
if your using nuxt.js(vue) or next.js(react) refer docs
For nuxt js Framework
req.headers.host
code:
async asyncData ({ req, res }) {
if (process.server) {
return { host: req.headers.host }
}
Code In router:
export function createRouter (ssrContext) {
console.log(ssrContext.req.headers.host)
return new Router({
middleware: 'route',
routes:checkRoute(ssrContext),
mode: 'history'
})
}
For next.js framework
Home.getInitalProps = async(context) => {
const { req, query, res, asPath, pathname } = context;
if (req) {
let host = req.headers.host // will give you localhost:3000
}
}
For node.js users
var os = require("os");
var hostname = os.hostname();
or
request.headers.host
For laravel users
public function yourControllerFun(Request $request) {
$host = $request->getHttpHost();
dd($host);
}
or
directly use in web.php
Request::getHost();
Note :
both csr and ssr app you manually check example ssr render
if(req.server){
host=req.host;
}
if(req.client){
host=window.location.host;
}
Try this with the + after [0-9]:
input type="text" pattern="[0-9]+" title="number only"
screen -S your_session_name
Ctrl+a, : sessionname YOUR_SESSION_NAME Enter
You must be inside the session
public void GetResponseAsync (HttpWebRequest request, Action<HttpWebResponse> gotResponse)
{
if (request != null) {
request.BeginGetRequestStream ((r) => {
try { // there's a try/catch here because execution path is different from invokation one, exception here may cause a crash
HttpWebResponse response = request.EndGetResponse (r);
if (gotResponse != null)
gotResponse (response);
} catch (Exception x) {
Console.WriteLine ("Unable to get response for '" + request.RequestUri + "' Err: " + x);
}
}, null);
}
}
I'm using NetBeans and needed a solution for this also. After googleling around and starting from Christopher's answer i managed to build a script that helps you easily do this in NetBeans. I'm putting the instructions here in case someone else will need them.
What you have to do is download one-jar. You can use the link from here: http://one-jar.sourceforge.net/index.php?page=getting-started&file=ant Extract the jar archive and look for one-jar\dist folder that contains one-jar-ant-task-.jar, one-jar-ant-task.xml and one-jar-boot-.jar. Extract them or copy them to a path that we will add to the script below, as the value of the property one-jar.dist.dir.
Just copy the following script at the end of your build.xml script (from your NetBeans project), just before /project tag, replace the value for one-jar.dist.dir with the correct path and run one-jar target.
For those of you that are unfamiliar with running targets, this tutorial might help: http://www.oracle.com/technetwork/articles/javase/index-139904.html . It also shows you how to place sources into one jar, but they are exploded, not compressed into jars.
<property name="one-jar.dist.dir" value="path\to\one-jar-ant"/>
<import file="${one-jar.dist.dir}/one-jar-ant-task.xml" optional="true" />
<target name="one-jar" depends="jar">
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.6"/>
<property name="source" value="1.6"/>
<property name="src.dir" value="src"/>
<property name="bin.dir" value="bin"/>
<property name="build.dir" value="build"/>
<property name="dist.dir" value="dist"/>
<property name="external.lib.dir" value="${dist.dir}/lib"/>
<property name="classes.dir" value="${build.dir}/classes"/>
<property name="jar.target.dir" value="${build.dir}/jars"/>
<property name="final.jar" value="${dist.dir}/${ant.project.name}.jar"/>
<property name="main.class" value="${main.class}"/>
<path id="project.classpath">
<fileset dir="${external.lib.dir}">
<include name="*.jar"/>
</fileset>
</path>
<mkdir dir="${bin.dir}"/>
<!-- <mkdir dir="${build.dir}"/> -->
<!-- <mkdir dir="${classes.dir}"/> -->
<mkdir dir="${jar.target.dir}"/>
<copy includeemptydirs="false" todir="${classes.dir}">
<fileset dir="${src.dir}">
<exclude name="**/*.launch"/>
<exclude name="**/*.java"/>
</fileset>
</copy>
<!-- <echo message="${ant.project.name}: ${ant.file}"/> -->
<javac debug="true" debuglevel="${debuglevel}" destdir="${classes.dir}" source="${source}" target="${target}">
<src path="${src.dir}"/>
<classpath refid="project.classpath"/>
</javac>
<delete file="${final.jar}" />
<one-jar destfile="${final.jar}" onejarmainclass="${main.class}">
<main>
<fileset dir="${classes.dir}"/>
</main>
<lib>
<fileset dir="${external.lib.dir}" />
</lib>
</one-jar>
<delete dir="${jar.target.dir}"/>
<delete dir="${bin.dir}"/>
<delete dir="${external.lib.dir}"/>
</target>
Best of luck and don't forget to vote up if it helped you.
you can attach a focus event to select
$('#select_id').focus(function() {
console.log('Handler for .focus() called.');
});
After reading the other answers (First by @duncan-finney and then by @Marrs) I set out to find the change log that explains the idiomatic react-router 2.x way of solving this. The documentation on using location (which you need for queries) in components is actually contradicted by the actual code. So if you follow their advice, you get big angry warnings like this:
Warning: [react-router] `context.location` is deprecated, please use a route component's `props.location` instead.
It turns out that you cannot have a context property called location that uses the location type. But you can use a context property called loc that uses the location type. So the solution is a small modification on their source as follows:
const RouteComponent = React.createClass({
childContextTypes: {
loc: PropTypes.location
},
getChildContext() {
return { location: this.props.location }
}
});
const ChildComponent = React.createClass({
contextTypes: {
loc: PropTypes.location
},
render() {
console.log(this.context.loc);
return(<div>this.context.loc.query</div>);
}
});
You could also pass down only the parts of the location object you want in your children get the same benefit. It didn't change the warning to change to the object type. Hope that helps.
Another solution: You can use percentage units for margins as well as sizes. For example:
.fullWidthPlusMargin {
width: 98%;
margin: 1%;
}
The main issue here is that the margins will increase/decrease slightly with the size of the parent element. Presumably the functionality you would prefer is for the margins to stay constant and the child element to grow/shrink to fill changes in spacing. So, depending on how tight you need your display to be, that could be problematic. (I'd also go for a smaller margin, like 0.3%).
Add an EditText on top of your listview in its .xml layout file. And in your activity/fragment..
lv = (ListView) findViewById(R.id.list_view);
inputSearch = (EditText) findViewById(R.id.inputSearch);
// Adding items to listview
adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.product_name, products);
lv.setAdapter(adapter);
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
// When user changed the Text
MainActivity.this.adapter.getFilter().filter(cs);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { }
@Override
public void afterTextChanged(Editable arg0) {}
});
The basic here is to add an OnTextChangeListener to your edit text and inside its callback method apply filter to your listview's adapter.
EDIT
To get filter to your custom BaseAdapter you"ll need to implement Filterable interface.
class CustomAdapter extends BaseAdapter implements Filterable {
public View getView(){
...
}
public Integer getCount()
{
...
}
@Override
public Filter getFilter() {
Filter filter = new Filter() {
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
arrayListNames = (List<String>) results.values;
notifyDataSetChanged();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
ArrayList<String> FilteredArrayNames = new ArrayList<String>();
// perform your search here using the searchConstraint String.
constraint = constraint.toString().toLowerCase();
for (int i = 0; i < mDatabaseOfNames.size(); i++) {
String dataNames = mDatabaseOfNames.get(i);
if (dataNames.toLowerCase().startsWith(constraint.toString())) {
FilteredArrayNames.add(dataNames);
}
}
results.count = FilteredArrayNames.size();
results.values = FilteredArrayNames;
Log.e("VALUES", results.values.toString());
return results;
}
};
return filter;
}
}
Inside performFiltering() you need to do actual comparison of the search query to values in your database. It will pass its result to publishResults() method.
The comment about getting the ^M to appear is what worked for me. Merely typing "^M" in my vi got nothing (not found). The CTRL+V CTRL+M sequence did it perfectly though.
My working substitution command was
:%s/Ctrl-V Ctrl-M/\r/g
and it looked like this on my screen:
:%s/^M/\r/g
I think you mean to update it back to the OLD
password, when the NEW one is not supplied.
DROP TRIGGER IF EXISTS upd_user;
DELIMITER $$
CREATE TRIGGER upd_user BEFORE UPDATE ON `user`
FOR EACH ROW BEGIN
IF (NEW.password IS NULL OR NEW.password = '') THEN
SET NEW.password = OLD.password;
ELSE
SET NEW.password = Password(NEW.Password);
END IF;
END$$
DELIMITER ;
However, this means a user can never blank out a password.
DELIMITER $$
CREATE TRIGGER upd_user BEFORE UPDATE ON `user`
FOR EACH ROW BEGIN
IF (NEW.password IS NULL OR NEW.password = '' OR NEW.password = OLD.password) THEN
SET NEW.password = OLD.password;
ELSE
SET NEW.password = Password(NEW.Password);
END IF;
END$$
DELIMITER ;
you can used:
$("#d").val(null).trigger("change");
It's very simple and work right! If use with reset button:
$('#btnReset').click(function() {
$("#d").val(null).trigger("change");
});
What I would first is make the following CSS code:
#bloc1 {
float: left
}
This will make #bloc2
be inline with #bloc1
.
To make it central, I would add #bloc1
and #bloc2
in a separate div. For example:
<style type="text/css">
#wrapper { margin: 0 auto; }
</style>
<div id="wrapper">
<div id="bloc1"> ... </div>
<div id="bloc2"> ... </div>
</div>
list comprehension?
[x.strip() for x in lst]
I had this same notice appear after making some changes. It turned out to be because I had changed between a single $http
request to multiple requests using angularjs $q
service.
I hadn't wrapped them in an array. e.g.
$q.all(request1, request2).then(...)
rather than
$q.all([request1, request2]).then(...)
I hope this might save somebody some time.
While the previous answers are correct, some compilers have options to break the standard and use the smallest type that will contain all values.
Example with GCC (documentation in the GCC Manual):
enum ord {
FIRST = 1,
SECOND,
THIRD
} __attribute__ ((__packed__));
STATIC_ASSERT( sizeof(enum ord) == 1 )
sudo apt-get install php5-mcrypt
sudo apt-get install php5-mysql
...etc resolved it for me :)
hope it helps
Here's a solution using a negative lookahead (not supported in all regex engines):
^[a-zA-Z](((?!__)[a-zA-Z0-9_])*[a-zA-Z0-9])?$
Test that it works as expected:
import re
tests = [
('a', True),
('_', False),
('zz', True),
('a0', True),
('A_', False),
('a0_b', True),
('a__b', False),
('a_1_c', True),
]
regex = '^[a-zA-Z](((?!__)[a-zA-Z0-9_])*[a-zA-Z0-9])?$'
for test in tests:
is_match = re.match(regex, test[0]) is not None
if is_match != test[1]:
print "fail: " + test[0]
Well, an application may have a lot of threads running in parallel. Some are run by you, the coder, some are run by framework classes (espacially if you are in a GUI environnement).
When a thread has finished its task, it exits and stops to exist. There ie nothing alarming in this and you should not care.
Create your annotation
@Retention(RetentionPolicy.RUNTIME)
public @interface AfterSpringLoadComplete {
}
Create class
public class PostProxyInvokerContextListener implements ApplicationListener<ContextRefreshedEvent> {
@Autowired
ConfigurableListableBeanFactory factory;
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
ApplicationContext context = event.getApplicationContext();
String[] names = context.getBeanDefinitionNames();
for (String name : names) {
try {
BeanDefinition definition = factory.getBeanDefinition(name);
String originalClassName = definition.getBeanClassName();
Class<?> originalClass = Class.forName(originalClassName);
Method[] methods = originalClass.getMethods();
for (Method method : methods) {
if (method.isAnnotationPresent(AfterSpringLoadComplete.class)){
Object bean = context.getBean(name);
Method currentMethod = bean.getClass().getMethod(method.getName(), method.getParameterTypes());
currentMethod.invoke(bean);
}
}
} catch (Exception ignored) {
}
}
}
}
Register this class by @Component annotation or in xml
<bean class="ua.adeptius.PostProxyInvokerContextListener"/>
and use annotation where you wan on any method that you want to run after context initialized, like:
@AfterSpringLoadComplete
public void init() {}
To check that the file you're trying to open actually exists, you can change directories in terminal using cd
. To change to ~/Desktop/sass/css
: cd ~/Desktop/sass/css
. To see what files are in the directory: ls
.
If you want information about either of those commands, use the man
page: man cd
or man ls
, for example.
Google for "basic unix command line commands" or similar; that will give you numerous examples of moving around, viewing files, etc in the command line.
On Mac OS X, you can also use open
to open a finder window: open .
will open the current directory in finder. (open ~/Desktop/sass/css
will open the ~/Desktop/sass/css
).
setting padding-bottom for each list using pseudo class is a viable method. Also line height can be used. Remember that font properties such as font-family, Font-weight, etc. plays a role for uneven heights.
You can use react-html-id to generate uniq id easely : https://www.npmjs.com/package/react-html-id
Appears to be a duplicate of https://askubuntu.com/questions/21131/how-to-correctly-remove-openjdk-and-jre-and-set-the-system-use-only-and-only-sun#answer-21137 assuming that you are using Ubuntu.
The key is to use the command sudo update-java-alternatives -s java-6-sun
. Any commands that rely on javac
will be affected and not just Maven.
Great question.
It can be achieved via an extension:
The question is old but i think my answer will help people. You can change the color of radio button's unchecked and checked state by using style in xml.
<RadioButton
android:id="@+id/rb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:theme="@style/RadioButtonStyle" />
In style.xml
<style name="RadioButtonStyle" parent="Theme.AppCompat.Light">
<item name="colorAccent">@android:color/white</item>
<item name="android:textColorSecondary">@android:color/white</item>
</style>
You can set the desired colors in this style.
You should use URL and URLSearchParams native functions:
let url = new URL("https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&q=mdn%20query%20string")_x000D_
let params = new URLSearchParams(url.search);_x000D_
let sourceid = params.get('sourceid') // 'chrome-instant'_x000D_
let q = params.get('q') // 'mdn query string'_x000D_
let ie = params.has('ie') // true_x000D_
params.append('ping','pong')_x000D_
_x000D_
console.log(sourceid)_x000D_
console.log(q)_x000D_
console.log(ie)_x000D_
console.log(params.toString())_x000D_
console.log(params.get("ping"))
_x000D_
https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams https://polyfill.io/v2/docs/features/
I have published a package on PyPI: ez.
Use pip install ez
to install it.
It has packed common commands in shell and nicely my lib uses basically the same syntax as shell. e.g., cp(source, destination) can handle both file and folder! (wrapper of shutil.copy shutil.copytree and it decides when to use which one). Even more nicely, it can support vectorization like R!
Another example: no os.walk, use fls(path, regex) to recursively find files and filter with regular expression and it returns a list of files with or without fullpath
Final example: you can combine them to write very simply scripts:
files = fls('.','py$'); cp(files, myDir)
Definitely check it out! It has cost me hundreds of hours to write/improve it!
Just saw that Amazon added a "How to Empty a Bucket" option to the AWS console menu:
http://docs.aws.amazon.com/AmazonS3/latest/UG/DeletingaBucket.html
Try this one
SELECT country_id, country_title
FROM (SELECT country_id, country_title,
CASE
WHEN country_title=LAG(country_title, 1, 0) OVER(ORDER BY country_title) THEN 1
ELSE 0
END AS "Duplicates"
FROM tbl_countries)
WHERE "Duplicates"=0;
UDP is applied a lot in games or other Peer-to-peer setups because it's faster and most of the time you don't need the protocol itself to make sure everything gets to the destination in the original order (UDP does not garantee packet delivery or delivery order).
Web traffic on the other hand is over TCP. (I'm not sure here but I think it has to do with the way the HTTP protocol is built)
Edited because I failed at UDP.
Well to make the decimal into a percent you can do this,
float percentage = (correct * 100.0f) / questionNum;
http://docs.python.org/2/tutorial/classes.html#method-objects
Usually, a method is called right after it is bound:
x.f()
In the MyClass example, this will return the string 'hello world'. However, it is not necessary to call a method right away: x.f is a method object, and can be stored away and called at a later time. For example:
xf = x.f while True: print xf()
will continue to print hello world until the end of time.
What exactly happens when a method is called? You may have noticed that x.f() was called without an argument above, even though the function definition for f() specified an argument. What happened to the argument? Surely Python raises an exception when a function that requires an argument is called without any — even if the argument isn’t actually used...
Actually, you may have guessed the answer: the special thing about methods is that the object is passed as the first argument of the function. In our example, the call x.f() is exactly equivalent to MyClass.f(x). In general, calling a method with a list of n arguments is equivalent to calling the corresponding function with an argument list that is created by inserting the method’s object before the first argument.
If you still don’t understand how methods work, a look at the implementation can perhaps clarify matters. When an instance attribute is referenced that isn’t a data attribute, its class is searched. If the name denotes a valid class attribute that is a function object, a method object is created by packing (pointers to) the instance object and the function object just found together in an abstract object: this is the method object. When the method object is called with an argument list, a new argument list is constructed from the instance object and the argument list, and the function object is called with this new argument list.
You are printing the wrong value. Instead if the string you print the scanners object. Try this
Scanner input = new Scanner(System.in);
String s = input.next();
System.out.println(s);
You may be missing mysql-server. install it using
sudo apt-get install mysql-server
We are developing Versile Python (VPy), an implementation for python 2.6+ and 3.x of a new ORB/RPC framework. Functional AGPL dev releases for review and testing are available. VPy has native python capabilities similar to PyRo and RPyC via a general native objects layer (code example). The product is designed for platform-independent remote object interaction for implementations of Versile Platform.
Full disclosure: I work for the company developing VPy.
To get the format you want:
SELECT (substring(CONVERT(VARCHAR,GETDATE(),22),10,8) + ' ' +
SUBSTRING(CONVERT(VARCHAR,getdate(),22), 19,2))
Why are you pulling this from sql?
Changing your passwords is a good idea, but for the process of removing password's from your repo's history, I recommend the BFG Repo-Cleaner, a faster, simpler alternative to git-filter-branch
explicitly designed for removing private data from Git repos.
Create a private.txt
file listing the passwords, etc, that you want to remove (one entry per line) and then run this command:
$ java -jar bfg.jar --replace-text private.txt my-repo.git
All files under a threshold size (1MB by default) in your repo's history will be scanned, and any matching string (that isn't in your latest commit) will be replaced with the string "***REMOVED***". You can then use git gc
to clean away the dead data:
$ git gc --prune=now --aggressive
The BFG is typically 10-50x faster than running git-filter-branch
and the options are simplified and tailored around these two common use-cases:
Full disclosure: I'm the author of the BFG Repo-Cleaner.
If you use file_put_contents you don't need to do a fopen -> fwrite -> fclose, the file_put_contents does all that for you. You should also check if the webserver has write rights in the directory where you are trying to write your "data.txt" file.
Depending on your PHP version (if it's old) you might not have the file_get/put_contents functions. Check your webserver log to see if any error appeared when you executed the script.
I know this is old but I had a similar need for this and I did not want to do the find and replace version. It turns out that you can nest the substitute method like so:
=SUBSTITUTE(SUBSTITUTE(F149, "a", " AM"), "p", " PM")
In my case, I am using excel to view a DBF file and however it was populated has times like this:
9:16a
2:22p
So I just made a new column and put that formula in it to convert it to the excel time format.
For ASP.NET Core websites, this generic error will also occur if you don't have the HttpPlatformHandler module installed, see this answer for more details.
That because your csv file is in invalid format, maybe the line break in your text file is not the \n or \r
and, using c/c++ to parse text is not a good idea. try awk:
$awk -F"," '{print "ID="$1"\tName="$2"\tAge="$3"\tGender="$4}' 1.csv
ID=0 Name=Filipe Age=19 Gender=M
ID=1 Name=Maria Age=20 Gender=F
ID=2 Name=Walter Age=60 Gender=M
You can use the built-in CSS class pre-scrollable in bootstrap 3 inside the span element of the dropdown and it works immediately without implementing custom css.
<ul class="dropdown-menu pre-scrollable">
<li>item 1 </li>
<li>item 2 </li>
</ul>
One of the major advantages of MVC which has not mentioned here is that MVC provides RESTful urls which enables SEO. When you name your Controllers and Actions wisely, it makes it easier for search engines to find your site if they only take a look at your site Urls. For example you have a car sale website and a page which displays available Lamborghini Veneno cars, instead of having www.MyCarSale.com/product/6548 referring to the page you can choose www.MyCarSale.com/SportCar/Lamborghini-Veneno url for SEO purpose.
Here is a good answer to MVC Advantages and here is an article How to create a SEO friendly Url.
I can offer you a jquery solution
add this in your <head></head>
tag
<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
add this after </ul>
<script> $('ul li:first').remove(); </script>
Had the same issue today. I added the user to:
Administrative Tools -> Local Security Policy -> Local Policies -> User Rights Assignment -> Log on as a batch job
But was still getting the error. I found this post, and it turns out there's also this setting that I had to remove the user from (not sure how it got in there):
Administrative Tools -> Local Security Policy -> Local Policies -> User Rights Assignment -> Deny log on as a batch job
So just be aware that you may need to check both policies for the user.
I'm new to powershell but this seems to be most effective:
doSomething -arg myArg
if (-not $?) {throw "Failed to doSomething"}
GCD
is a low-level C-based API.
NSOperation
and NSOperationQueue
are Objective-C classes.
NSOperationQueue
is objective C wrapper over GCD
.
If you are using NSOperation, then you are implicitly using Grand Central Dispatch.
GCD advantage over NSOperation:
i. implementation
For GCD
implementation is very light-weight
NSOperationQueue
is complex and heavy-weight
NSOperation advantages over GCD:
i. Control On Operation
you can Pause, Cancel, Resume an NSOperation
ii. Dependencies
you can set up a dependency between two NSOperations
operation will not started until all of its dependencies return true for finished.
iii. State of Operation
can monitor the state of an operation or operation queue.
ready ,executing or finished
iv. Max Number of Operation
you can specify the maximum number of queued operations that can run simultaneously
When to Go for GCD
or NSOperation
when you want more control over queue (all above mentioned) use NSOperation
and for simple cases where you want less overhead
(you just want to do some work "into the background" with very little additional work) use GCD
ref:
https://cocoacasts.com/choosing-between-nsoperation-and-grand-central-dispatch/
http://iosinfopot.blogspot.in/2015/08/nsthread-vs-gcd-vs-nsoperationqueue.html
http://nshipster.com/nsoperation/
Based on @epegzz suggestion for the regex.
( url ) => {
return url.match('^[^?]*')[0].split('/').slice(1)
}
returns an array with paths.
just use frame.setVisible(false); frame.setVisible(true); I've had this problem with JLabels with images, and this solved it
A simple way is to set line-height
to the height of the element.
Simple 1 liner Vanilla Javascript code :
const priorByDays = new Date(Date.now() - days * 24 * 60 * 60 * 1000)
For example:
days = 7
Assume current date = Fri Sep 18 2020 01:33:26 GMT+0530
The result would be : Fri Sep 11 2020 01:34:03 GMT+0530
The beauty of this is you can manipulate it to get result in desired type
timestamp : Date.now() - days * 24 * 60 * 60 * 1000
ISOString: new Date(Date.now() - 7 * 24 * 60 * 60 * 1000).toISOString()
concat
also works nicely with a list comprehension pulled using the "loc" command against an existing dataframe
df = pd.read_csv('./data.csv') # ie; Dataframe pulled from csv file with a "userID" column
review_ids = ['1','2','3'] # ie; ID values to grab from DataFrame
# Gets rows in df where IDs match in the userID column and combines them
dfa = pd.concat([df.loc[df['userID'] == x] for x in review_ids])
I got a similar prompt. It was because I had specified the x-axis in terms of some percentage (for example: 10%A, 20%B,....). So an alternate approach could be that you multiply these values and write them in the simplest form.