Similar to @??? I had the wrong application type configured for a dll. I guess that the project type changed due to some bad copy pasting, as @Daniel Struhl suggested.
How to verify:
Right click on the project -> properties
-> Configuration Properties
-> General
-> Project Defaults
-> Configuration Type
.
Check if this field contains the correct type, e.g. "Dynamic Library (.dll)" in case the project is a dll.
This is not exactly a hot topic, but I have a factory class that allows a dll to create an instance and return it as a DLL. It is what I came looking for but couldn't find exactly.
It is called like,
IHTTP_Server *server = SN::SN_Factory<IHTTP_Server>::CreateObject();
IHTTP_Server *server2 =
SN::SN_Factory<IHTTP_Server>::CreateObject(IHTTP_Server_special_entry);
where IHTTP_Server is the pure virtual interface for a class created either in another DLL, or the same one.
DEFINE_INTERFACE is used to give a class id an interface. Place inside interface;
An interface class looks like,
class IMyInterface
{
DEFINE_INTERFACE(IMyInterface);
public:
virtual ~IMyInterface() {};
virtual void MyMethod1() = 0;
...
};
The header file is like this
#if !defined(SN_FACTORY_H_INCLUDED)
#define SN_FACTORY_H_INCLUDED
#pragma once
The libraries are listed in this macro definition. One line per library/executable. It would be cool if we could call into another executable.
#define SN_APPLY_LIBRARIES(L, A) \
L(A, sn, "sn.dll") \
L(A, http_server_lib, "http_server_lib.dll") \
L(A, http_server, "")
Then for each dll/exe you define a macro and list its implementations. Def means that it is the default implementation for the interface. If it is not the default, you give a name for the interface used to identify it. Ie, special, and the name will be IHTTP_Server_special_entry.
#define SN_APPLY_ENTRYPOINTS_sn(M) \
M(IHTTP_Handler, SNI::SNI_HTTP_Handler, sn, def) \
M(IHTTP_Handler, SNI::SNI_HTTP_Handler, sn, special)
#define SN_APPLY_ENTRYPOINTS_http_server_lib(M) \
M(IHTTP_Server, HTTP::server::server, http_server_lib, def)
#define SN_APPLY_ENTRYPOINTS_http_server(M)
With the libraries all setup, the header file uses the macro definitions to define the needful.
#define APPLY_ENTRY(A, N, L) \
SN_APPLY_ENTRYPOINTS_##N(A)
#define DEFINE_INTERFACE(I) \
public: \
static const long Id = SN::I##_def_entry; \
private:
namespace SN
{
#define DEFINE_LIBRARY_ENUM(A, N, L) \
N##_library,
This creates an enum for the libraries.
enum LibraryValues
{
SN_APPLY_LIBRARIES(DEFINE_LIBRARY_ENUM, "")
LastLibrary
};
#define DEFINE_ENTRY_ENUM(I, C, L, D) \
I##_##D##_entry,
This creates an enum for interface implementations.
enum EntryValues
{
SN_APPLY_LIBRARIES(APPLY_ENTRY, DEFINE_ENTRY_ENUM)
LastEntry
};
long CallEntryPoint(long id, long interfaceId);
This defines the factory class. Not much to it here.
template <class I>
class SN_Factory
{
public:
SN_Factory()
{
}
static I *CreateObject(long id = I::Id )
{
return (I *)CallEntryPoint(id, I::Id);
}
};
}
#endif //SN_FACTORY_H_INCLUDED
Then the CPP is,
#include "sn_factory.h"
#include <windows.h>
Create the external entry point. You can check that it exists using depends.exe.
extern "C"
{
__declspec(dllexport) long entrypoint(long id)
{
#define CREATE_OBJECT(I, C, L, D) \
case SN::I##_##D##_entry: return (int) new C();
switch (id)
{
SN_APPLY_CURRENT_LIBRARY(APPLY_ENTRY, CREATE_OBJECT)
case -1:
default:
return 0;
}
}
}
The macros set up all the data needed.
namespace SN
{
bool loaded = false;
char * libraryPathArray[SN::LastLibrary];
#define DEFINE_LIBRARY_PATH(A, N, L) \
libraryPathArray[N##_library] = L;
static void LoadLibraryPaths()
{
SN_APPLY_LIBRARIES(DEFINE_LIBRARY_PATH, "")
}
typedef long(*f_entrypoint)(long id);
f_entrypoint libraryFunctionArray[LastLibrary - 1];
void InitlibraryFunctionArray()
{
for (long j = 0; j < LastLibrary; j++)
{
libraryFunctionArray[j] = 0;
}
#define DEFAULT_LIBRARY_ENTRY(A, N, L) \
libraryFunctionArray[N##_library] = &entrypoint;
SN_APPLY_CURRENT_LIBRARY(DEFAULT_LIBRARY_ENTRY, "")
}
enum SN::LibraryValues libraryForEntryPointArray[SN::LastEntry];
#define DEFINE_ENTRY_POINT_LIBRARY(I, C, L, D) \
libraryForEntryPointArray[I##_##D##_entry] = L##_library;
void LoadLibraryForEntryPointArray()
{
SN_APPLY_LIBRARIES(APPLY_ENTRY, DEFINE_ENTRY_POINT_LIBRARY)
}
enum SN::EntryValues defaultEntryArray[SN::LastEntry];
#define DEFINE_ENTRY_DEFAULT(I, C, L, D) \
defaultEntryArray[I##_##D##_entry] = I##_def_entry;
void LoadDefaultEntries()
{
SN_APPLY_LIBRARIES(APPLY_ENTRY, DEFINE_ENTRY_DEFAULT)
}
void Initialize()
{
if (!loaded)
{
loaded = true;
LoadLibraryPaths();
InitlibraryFunctionArray();
LoadLibraryForEntryPointArray();
LoadDefaultEntries();
}
}
long CallEntryPoint(long id, long interfaceId)
{
Initialize();
// assert(defaultEntryArray[id] == interfaceId, "Request to create an object for the wrong interface.")
enum SN::LibraryValues l = libraryForEntryPointArray[id];
f_entrypoint f = libraryFunctionArray[l];
if (!f)
{
HINSTANCE hGetProcIDDLL = LoadLibraryA(libraryPathArray[l]);
if (!hGetProcIDDLL) {
return NULL;
}
// resolve function address here
f = (f_entrypoint)GetProcAddress(hGetProcIDDLL, "entrypoint");
if (!f) {
return NULL;
}
libraryFunctionArray[l] = f;
}
return f(id);
}
}
Each library includes this "cpp" with a stub cpp for each library/executable. Any specific compiled header stuff.
#include "sn_pch.h"
Setup this library.
#define SN_APPLY_CURRENT_LIBRARY(L, A) \
L(A, sn, "sn.dll")
An include for the main cpp. I guess this cpp could be a .h. But there are different ways you could do this. This approach worked for me.
#include "../inc/sn_factory.cpp"
EDIT: For a better description, see x86 Disassembly/Functions and Stack Frames in a WikiBook about x86 assembly. I try to add some info you might be interested in using Visual Studio.
Storing the caller EBP as the first local variable is called a standard stack frame, and this may be used for nearly all calling conventions on Windows. Differences exist whether the caller or callee deallocates the passed parameters, and which parameters are passed in registers, but these are orthogonal to the standard stack frame problem.
Speaking about Windows programs, you might probably use Visual Studio to compile your C++ code. Be aware that Microsoft uses an optimization called Frame Pointer Omission, that makes it nearly impossible to do walk the stack without using the dbghlp library and the PDB file for the executable.
This Frame Pointer Omission means that the compiler does not store the old EBP on a standard place and uses the EBP register for something else, therefore you have hard time finding the caller EIP without knowing how much space the local variables need for a given function. Of course Microsoft provides an API that allows you to do stack-walks even in this case, but looking up the symbol table database in PDB files takes too long for some use cases.
To avoid FPO in your compilation units, you need to avoid using /O2 or need to explicitly add /Oy- to the C++ compilation flags in your projects. You probably link against the C or C++ runtime, which uses FPO in the Release configuration, so you will have hard time to do stack walks without the dbghlp.dll.
The thing to watch out for when writing C++ dlls is name mangling. If you want interoperability between C and C++, you'd be better off by exporting non-mangled C-style functions from within the dll.
You have two options to use a dll
LoadLibrary()
or some suitable function to load the library, retrieve a function pointer (GetProcAddress
) and call it -- runtime dynamic linkingExporting classes will not work if you follow the second method though.
The answers so far have covered the details, but if you don't intend to drop down to assembly, then all you have to know is that both the caller and the callee must use the same calling convention, otherwise you'll get bugs that are hard to find.
I think you can try this for calling in from a class
System.Web.HttpContext.Current.Server.MapPath("~/SignatureImages/");
*----------------Sorry I oversight, for static function already answered the question by adrift*
System.Web.Hosting.HostingEnvironment.MapPath("~/SignatureImages/");
Update
I got exception while using System.Web.Hosting.HostingEnvironment.MapPath("~/SignatureImages/");
Ex details : System.ArgumentException: The relative virtual path 'SignatureImages' is not allowed here. at System.Web.VirtualPath.FailIfRelativePath()
Solution (tested in static webmethod)
System.Web.HttpContext.Current.Server.MapPath("~/SignatureImages/");
Worked
In the first place consider the Small grid, see: http://getbootstrap.com/css/#grid-options. A max container width of 750 px will maybe to small for you (also read: Why does Bootstrap 3 force the container width to certain sizes?)
When using the Small grid use media queries to set the max-container width:
@media (min-width: 768px) { .container { max-width: 750px; } }
Second also read this question: Bootstrap 3 - 940px width grid?, possible duplicate?
12 x 60 = 720px for the columns and 11 x 20 = 220px
there will also a gutter of 20px on both sides of the grid so 220 + 720 + 40 makes 980px
there is 'no' @ColumnWidth
You colums width will be calculated dynamically based on your settings in variables.less.
you could set @grid-columns
and @grid-gutter-width
. The width of a column will be set as a percentage via grid.less in mixins.less:
.calc-grid(@index, @class, @type) when (@type = width) {
.col-@{class}-@{index} {
width: percentage((@index / @grid-columns));
}
}
update Set @grid-gutter-width to 20px;, @container-desktop: 940px;, @container-large-desktop: @container-desktop and recompile bootstrap.
from string import maketrans, lowercase, uppercase
def rot13(message):
lower = maketrans(lowercase, lowercase[13:] + lowercase[:13])
upper = maketrans(uppercase, uppercase[13:] + uppercase[:13])
return message.translate(lower).translate(upper)
(parseFloat('2.3') + parseFloat('2.4')).toFixed(1);
its going to give you solution i suppose
As stated in the other answer, width: auto doesn't work due to the width being generated by the input's size attribute, which cannot be set to "auto" or anything similar.
There are a few workarounds you can use to cause it to play nicely with the box model, but nothing fantastic as far as I know.
First you can set the padding in the field using percentages, making sure that the width adds up to 100%, e.g.:
input {
width: 98%;
padding: 1%;
}
Another thing you might try is using absolute positioning, with left and right set to 0. Using this markup:
<fieldset>
<input type="text" />
</fieldset>
And this CSS:
fieldset {
position: relative;
}
input {
position: absolute;
left: 0;
right: 0;
}
This absolute positioning will cause the input to fill the parent fieldset horizontally, regardless of the input's padding or margin. However a huge downside of this is that you now have to deal with the height of the fieldset, which will be 0 unless you set it. If your inputs are all the same height this will work for you, simply set the fieldset's height to whatever the input's height should be.
Other than this there are some JS solutions, but I don't like applying basic styling with JS.
The openssl
documentation says that file supplied as the -in
argument must be in PEM format.
Turns out that, contrary to the CA's manual, the certificate returned by the CA which I stored in myCert.cer
is not PEM format rather it is PKCS7.
In order to create my .p12
, I had to first convert the certificate to PEM:
openssl pkcs7 -in myCert.cer -print_certs -out certs.pem
and then execute
openssl pkcs12 -export -out keyStore.p12 -inkey myKey.pem -in certs.pem
In addtion to align-self
you can also consider auto margin which will do almost the same thing
.container {_x000D_
background: red;_x000D_
height: 200px;_x000D_
flex-direction: column;_x000D_
padding: 10px;_x000D_
display: flex;_x000D_
}_x000D_
a {_x000D_
margin-right:auto;_x000D_
padding: 10px 40px;_x000D_
background: pink;_x000D_
}
_x000D_
<div class="container">_x000D_
<a href="#">Test</a>_x000D_
</div>
_x000D_
Here are the rules for how these functions work:
stringValue.CompareTo(otherStringValue)
null
comes before a stringCultureInfo.CurrentCulture.CompareInfo.Compare
, which means it will use a culture-dependent comparison. This might mean that ß
will compare equal to SS
in Germany, or similarstringValue.Equals(otherStringValue)
null
is not considered equal to anythingStringComparison
option, it will use what looks like a direct ordinal equality check, i.e. ß
is not the same as SS
, in any language or culturestringValue == otherStringValue
stringValue.Equals()
.==
operator calls the static Equals(string a, string b)
method (which in turn goes to an internal EqualsHelper
to do the comparison..Equals()
on a null
string gets null
reference exception, while on ==
does not.Object.ReferenceEquals(stringValue, otherStringValue)
Just checks that references are the same, i.e. it isn't just two strings with the same contents, you're comparing a string object with itself.
Note that with the options above that use method calls, there are overloads with more options to specify how to compare.
My advice if you just want to check for equality is to make up your mind whether you want to use a culture-dependent comparison or not, and then use .CompareTo
or .Equals
, depending on the choice.
How about reinstalling the node module? Go to the root directory
of the project and remove the current node modules
and install again.
These are the commands : rm -rf node_modules npm install
OR
npm uninstall -g react-native-cli
and
npm install -g react-native-cli
I recently had to begrudgingly disable pasting in a form element. To do so, I wrote a cross-browser* implementation of Internet Explorer's (and others') onpaste event handler. My solution had to be independent of any third-party JavaScript libraries.
Here's what I came up with. It doesn't completely disable pasting (the user can paste a single character at a time, for example), but it meets my needs and avoids having to deal with keyCodes, etc.
// Register onpaste on inputs and textareas in browsers that don't
// natively support it.
(function () {
var onload = window.onload;
window.onload = function () {
if (typeof onload == "function") {
onload.apply(this, arguments);
}
var fields = [];
var inputs = document.getElementsByTagName("input");
var textareas = document.getElementsByTagName("textarea");
for (var i = 0; i < inputs.length; i++) {
fields.push(inputs[i]);
}
for (var i = 0; i < textareas.length; i++) {
fields.push(textareas[i]);
}
for (var i = 0; i < fields.length; i++) {
var field = fields[i];
if (typeof field.onpaste != "function" && !!field.getAttribute("onpaste")) {
field.onpaste = eval("(function () { " + field.getAttribute("onpaste") + " })");
}
if (typeof field.onpaste == "function") {
var oninput = field.oninput;
field.oninput = function () {
if (typeof oninput == "function") {
oninput.apply(this, arguments);
}
if (typeof this.previousValue == "undefined") {
this.previousValue = this.value;
}
var pasted = (Math.abs(this.previousValue.length - this.value.length) > 1 && this.value != "");
if (pasted && !this.onpaste.apply(this, arguments)) {
this.value = this.previousValue;
}
this.previousValue = this.value;
};
if (field.addEventListener) {
field.addEventListener("input", field.oninput, false);
} else if (field.attachEvent) {
field.attachEvent("oninput", field.oninput);
}
}
}
}
})();
To make use of this in order to disable pasting:
<input type="text" onpaste="return false;" />
* I know oninput isn't part of the W3C DOM spec, but all of the browsers I've tested this code with—Chrome 2, Safari 4, Firefox 3, Opera 10, IE6, IE7—support either oninput or onpaste. Out of all these browsers, only Opera doesn't support onpaste, but it does support oninput.
Note: This won't work on a console or other system that uses an on-screen keyboard (assuming the on-screen keyboard doesn't send keys to the browser when each key is selected). If it's possible your page/app could be used by someone with an on-screen keyboard and Opera (e.g.: Nintendo Wii, some mobile phones), don't use this script unless you've tested to make sure the on-screen keyboard sends keys to the browser after each key selection.
Update v1.0.0-beta.26
You can see on the doc for the new way for importing bootstrap here
If it still does not work, restart with the command ng serve
1.0.0 or below versions:
In your index.html file you just need bootstrap css link (no need js scripts)
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">
And
npm install ng2-bootstrap --save
npm install moment --save
After having installed ng2-bootstrap in my_project/src/system-config.ts :
/** Map relative paths to URLs. */
const map: any = {
'moment': 'vendor/moment/moment.js',
'ng2-bootstrap': 'vendor/ng2-bootstrap'
};
/** User packages configuration. */
const packages: any = {
'ng2-bootstrap': {
defaultExtension: 'js'
},
'moment':{
format: 'cjs'
}
};
And in my_project/angular-cli-build.js :
module.exports = function (defaults) {
return new Angular2App(defaults, {
vendorNpmFiles: [
'ng2-bootstrap/**/*',
'moment/moment.js'
]
});
};
Don't forget this command to put your module in the vendor :
ng build
to import from another module that is the same principle.
SET @table = 'the_table';
SELECT GROUP_CONCAT(IF(COLUMN_NAME IN ('id'), 0, CONCAT("\`", COLUMN_NAME, "\`"))) FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = @table INTO @columns;
SET @s = CONCAT('INSERT INTO ', @table, ' SELECT ', @columns,' FROM ', @table, ' WHERE id=1');
PREPARE stmt FROM @s;
EXECUTE stmt;
The object used in Object.create actually forms the prototype of the new object, where as in the new Function() form the declared properties/functions do not form the prototype.
Yes, Object.create
builds an object that inherits directly from the one passed as its first argument.
With constructor functions, the newly created object inherits from the constructor's prototype, e.g.:
var o = new SomeConstructor();
In the above example, o
inherits directly from SomeConstructor.prototype
.
There's a difference here, with Object.create
you can create an object that doesn't inherit from anything, Object.create(null);
, on the other hand, if you set SomeConstructor.prototype = null;
the newly created object will inherit from Object.prototype
.
You cannot create closures with the Object.create syntax as you would with the functional syntax. This is logical given the lexical (vs block) type scope of JavaScript.
Well, you can create closures, e.g. using property descriptors argument:
var o = Object.create({inherited: 1}, {
foo: {
get: (function () { // a closure
var closured = 'foo';
return function () {
return closured+'bar';
};
})()
}
});
o.foo; // "foobar"
Note that I'm talking about the ECMAScript 5th Edition Object.create
method, not the Crockford's shim.
The method is starting to be natively implemented on latest browsers, check this compatibility table.
The general rule I follow is not to include any header file unless I have to. So unless I am storing the object of a class as a member variable of my class I won't include it, I'll just use the forward declaration.
You can use this rewriteBatchedStatements
parameter to make the batch insert even faster.
you can read here about the param: MySQL and JDBC with rewriteBatchedStatements=true
Try out cat
and sprintf
in your for loop.
eg.
cat(sprintf("\"%f\" \"%f\"\n", df$r, df$interest))
See here
Use double quotes instead of single quote eg :
where('customer.name', 'LIKE', "%$findcustomer%")
Below is my code:
public function searchCustomer($findcustomer)
{
$customer = DB::table('customer')
->where('customer.name', 'LIKE', "%$findcustomer%")
->orWhere('customer.phone', 'LIKE', "%$findcustomer%")
->get();
return View::make("your view here");
}
After the installation of the new SDK, there is a new folder, "Android Dependencies", under your project file. If you right click and remove it from the build path, you will again be able to build your project.
The answers here were helpful, however I need more than that: not only month, date, month, hours & seconds, for a default name.
Interestingly, though prepend of "0" was needed for all above, " + 1" was needed only for month, not others.
As example:
("0" + (d.getMonth() + 1)).slice(-2) // Note: +1 is needed
("0" + (d.getHours())).slice(-2) // Note: +1 is not needed
If, like me, you want to make a function pack or something that people can download then it's very simple. Just write your function in a python file and save it as the name you want IN YOUR PYTHON DIRECTORY. Now, in your script where you want to use this, you type:
from FILE NAME import FUNCTION NAME
Note - the parts in capital letters are where you type the file name and function name.
Now you just use your function however it was meant to be.
Example:
FUNCTION SCRIPT - saved at C:\Python27 as function_choose.py
def choose(a):
from random import randint
b = randint(0, len(a) - 1)
c = a[b]
return(c)
SCRIPT USING FUNCTION - saved wherever
from function_choose import choose
list_a = ["dog", "cat", "chicken"]
print(choose(list_a))
OUTPUT WILL BE DOG, CAT, OR CHICKEN
Hoped this helped, now you can create function packs for download!
--------------------------------This is for Python 2.7-------------------------------------
Generally, bash works better than python only in those environments where python is not available. :)
Seriously, I have to deal with both languages daily, and will take python instantly over bash if given the choice. Alas, I am forced to use bash on certain "small" platforms because someone has (mistakenly, IMHO) decided that python is "too large" to fit.
While it is true that bash might be faster than python for some select tasks, it can never be as quick to develop with, or as easy to maintain (at least after you get past 10 lines of code or so). Bash's sole strong point wrt python or ruby or lua, etc., is its ubiquity.
It don't create normally; you need to add it by yourself.
After adding Global.asax
by
You need to add a class
Inherit the newly generated by System.Web.HttpApplication
and copy all the method created Global.asax
to Global.cs
and also add an inherit attribute to the Global.asax file.
Your Global.asax will look like this: -
<%@ Application Language="C#" Inherits="Global" %>
Your Global.cs in App_Code
will look like this: -
public class Global : System.Web.HttpApplication
{
public Global()
{
//
// TODO: Add constructor logic here
//
}
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
}
/// Many other events like begin request...e.t.c, e.t.c
}
.a
files are static libraries typically generated by the archive tool. You usually include the header files associated with that static library and then link to the library when you are compiling.
Ok, finally found the solution.
Probably due to lack of experience with ReactJS and web development...
var Task = React.createClass({
render: function() {
var percentage = this.props.children + '%';
....
<div className="ui-progressbar-value ui-widget-header ui-corner-left" style={{width : percentage}}/>
...
I created the percentage variable outside in the render function.
When you scheduled task, just select "Run whether user is logged on or not" under the "General" tab.
Alternate way is to let the task run as another user.
Others have already given thorough answers, but if you're looking for even more information, the Oracle Java tutorials are always a good resource. Here's the Java tutorial for Exceptions, which covers all of your questions in great detail; https://docs.oracle.com/javase/tutorial/essential/exceptions/index.html
I tried the solution priyanka.sarkar mentioned and the didn't quite get it working as the OP asked. Here's the solution I ended up with:
SELECT ID,
SUBSTRING((
SELECT ',' + T2.SomeColumn
FROM @T T2
WHERE WHERE T1.id = T2.id
FOR XML PATH('')), 2, 1000000)
FROM @T T1
GROUP BY ID
There are two issues here. The first is to access fields in the array returned by your JSON parse, the second is to rename collections/fields (like sentences) away from VBA reserved names.
Let's address the second concern first. You were on the right track. First, replace all instances of sentences
with jsentences
If text within your JSON also contains the word sentences, then figure out a way to make the replacement unique, such as using "sentences":[
as the search string. You can use the VBA Replace
method to do this.
Once that's done, so VBA will stop renaming sentences to Sentences, it's just a matter of accessing the array like so:
'first, declare the variables you need:
Dim jsent as Variant
'Get arr all setup, then
For Each jsent in arr.jsentences
MsgBox(jsent.orig)
Next
The best way I've seen is to utilize the stalenessOf
ExpectedCondition, to wait for the old page to become stale.
Example:
WebDriver driver = new FirefoxDriver();
WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement oldHtml = driver.findElement(By.tagName("html"));
wait.until(ExpectedConditions.stalenessOf(oldHtml));
It'll wait for ten seconds for the old HTML tag to become stale, and then throw an exception if it doesn't happen.
export JAVA_HOME=/home/hadoop/software/java/jdk1.7.0_80
export HADOOP_HOME=/usr/local/hadoop
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export HADOOP_OPTS="-Djava.library.path=$HADOOP_COMMON_LIB_NATIVE_DIR"
In Laravel i solve with:
app.sccs
// slick
@import "~slick-carousel/slick/slick";
@import "~slick-carousel/slick/slick-theme";
bootstrap.js
try {
window.Popper = require('popper.js').default;
window.$ = window.jQuery = require('jquery');
require('bootstrap');
require('slick')
require('slick-carousel')
}
package.json
"jquery": "^3.2",
"slick": "^1.12.2",
"slick-carousel": "^1.6.0"
example.js
$('.testimonial-active').slick({
dots: false,
arrows: true,
prevArrow: '<span class="prev"><i class="mdi mdi-arrow-left"></i></span>',
nextArrow: '<span class="next"><i class="mdi mdi-arrow-right"></i></span>',
infinite: true,
autoplay: true,
autoplaySpeed: 5000,
speed: 800,
slidesToShow: 1,
});
Got the same issue. Read this. Disabled the antivirus software (mcaffee). Et voila
Confirmed by the antivirus log:
Blocked by Access Protection rule d:\mingw64\x86_64-w64-mingw32\bin\ld.exe d:\workspace\cpp\bar\foo.exe User-defined Rules:ctx3 Action blocked : Create
I just had the same problem. I stored session data for a user in the format:
session:sessionid:key-x - value of x
session:sessionid:key-y - value of y
session:sessionid:key-z - value of z
So, each entry was a seperate key-value pair. When the session is destroyed, I wanted to remove all session data by deleting keys with the pattern session:sessionid:*
- but redis does not have such a function.
What I did: store the session data within a hash. I just create a hash with the hash id of session:sessionid
and then I push key-x
, key-y
, key-z
in that hash (order did not matter to me) and if I dont need that hash anymore I just do a DEL session:sessionid
and all data associated with that hash id is gone. DEL
is atomic and accessing data/writing data to the hash is O(1).
You should specify where Eclipse should find your JDK in the file eclipse.ini. Specifically, the following parameter (note that it is 2 separate lines in the ini file):
-vm
C:\Java\JDK\1.8\bin\javaw.exe
or wherever your javaw.exe happens to be.
Note: The format of the ini file is very particular; make sure to consult https://wiki.eclipse.org/Eclipse.ini to ensure you get it exactly right
In JavaScript you can use template literals:
let value = 100;
console.log(`The size is ${ value }`);
I had this problem when I installed MySQL 8.0.15 with the community installer. The my.ini file that came with the installer did not work correctly after it had been edited. I did a full manual install by downloading that zip folder. I was able to create my own my.ini file containing only the parameters that I was concerned about and it worked.
include the parameters in that my.ini file that you are concerned about. so something like this(just ensure that there is already a folder created for the datadir or else initialization won't work):
[mysqld]
basedire=C:\program files\MySQL\MySQL8.0
datadir=D:\MySQL\Data
....continue with whatever parameters you want to include
initialize the data directory by running these two commands in the command prompt:
cd C:\program files\MySQL\MySQL8.0\bin
mysqld --default-file=C:\program files\MySQL\MySQL8.0\my.ini --initialize
install the MySQL server as a service by running these two commands:
cd C:\program files\MySQL\MySQL8.0\bin
mysqld --install --default-file=C:\program files\MySQL\MySQL8.0\my.ini
finally, start the server for the first time by running these two commands:
cd C:\program files\MySQL\MySQL8.0\bin
mysqld --console
Please check you are using //
not \\
by-mistake , like below
Wrong:"http:\\stackoverflow.com"
Right:"http://stackoverflow.com"
The example you are using is wrong. See the man page for easy_setopt. In the example write_data uses its own FILE, *outfile, and not the fp that was specified in CURLOPT_WRITEDATA. That's why closing fp causes problems - it's not even opened.
This is more or less what it should look like (no libcurl available here to test)
#include <stdio.h>
#include <curl/curl.h>
/* For older cURL versions you will also need
#include <curl/types.h>
#include <curl/easy.h>
*/
#include <string>
size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {
size_t written = fwrite(ptr, size, nmemb, stream);
return written;
}
int main(void) {
CURL *curl;
FILE *fp;
CURLcode res;
char *url = "http://localhost/aaa.txt";
char outfilename[FILENAME_MAX] = "C:\\bbb.txt";
curl = curl_easy_init();
if (curl) {
fp = fopen(outfilename,"wb");
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
fclose(fp);
}
return 0;
}
Updated: as suggested by @rsethc types.h
and easy.h
aren't present in current cURL versions anymore.
I found this answer works for me
<style type="text/css">
#background{
position: fixed;
top: 0;
left: 0;
width: 100% !important;
height: 100% !important;
background: url(mobile-images/limo-service.jpg) no-repeat center center fixed !important;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
z-index: -1;
}
.ui-page{
background:none;
}
</style>
also add id="background"
to the div for your content section
<div data-role="page" data-theme="a">
<div data-role="main" class="ui-content" id="background">
</div>
</div>
Edit: Sometimes you want to use webpack simply as a module bundler for a simple web project - to keep your own code organized. The following solution is for those who just want an external library to work as expected inside their modules - without using a lot of time diving into webpack setups. (Edited after -1)
Quick and simple (es6) solution if you’re still struggling or want to avoid externals config / additional webpack plugin config:
<script src="cdn/jquery.js"></script>
<script src="cdn/underscore.js"></script>
<script src="etc.js"></script>
<script src="bundle.js"></script>
inside a module:
const { jQuery: $, Underscore: _, etc } = window;
create a logfile in php, to do it you need to pass data on function and it will create log file for you.
function wh_log($log_msg)
{
$log_filename = "log";
if (!file_exists($log_filename))
{
// create directory/folder uploads.
mkdir($log_filename, 0777, true);
}
$log_file_data = $log_filename.'/log_' . date('d-M-Y') . '.log';
// if you don't add `FILE_APPEND`, the file will be erased each time you add a log
file_put_contents($log_file_data, $log_msg . "\n", FILE_APPEND);
}
// call to function
wh_log("this is my log message");
irb(main)> varA
=> {0=>["12", "34", "35", "231"]}
irb(main)> varA = Hash[*ex.collect{|a,b| [a,b.join(",")]}.flatten]
...
Yes, it's possible. for example checkout:
<div class="singleMatch" ng-if="match.date | date:'ddMMyyyy' === main.date && match.team1.code === main.team1code && match.team2.code === main.team2code">
//Do something here
</div>
Open up the postgres terminal with the databse you would like:
psql dbname (run this line in a terminal)
then, run this command in the postgres environment
\d
This will describe all tables by name. Basically a list of tables by name ascending.
Then you can try this to describe a table by fields:
\d tablename.
Hope this helps.
long
can only take string convertibles which can end in a base 10 numeral. So, the decimal is causing the harm. What you can do is, float
the value before calling the long
. If your program is on Python 2.x where int and long difference matters, and you are sure you are not using large integers, you could have just been fine with using int
to provide the key as well.
So, the answer is long(float('234.89'))
or it could just be int(float('234.89'))
if you are not using large integers. Also note that this difference does not arise in Python 3, because int is upgraded to long by default. All integers are long in python3 and call to covert is just int
You shouldn't be setting the value of the input through refs.
Take a look at the documentation for controlled form components here - https://facebook.github.io/react/docs/forms.html#controlled-components
In a nutshell
<input value={this.state.value} onChange={(e) => this.setState({value: e.target.value})} />
Then you will be able to control the disabled state by using disabled={!this.state.value}
Most of the answers here are using built-in methods or using libraries/frameworks. This simple method should work fine:
function copy(x) {
return JSON.parse( JSON.stringify(x) );
}
// Usage
var a = 'some';
var b = copy(a);
a += 'thing';
console.log(b); // "some"
var c = { x: 1 };
var d = copy(c);
c.x = 2;
console.log(d); // { x: 1 }
The size of the numbers involved in the float-point calculations is not the most relevant thing. It's the calculation that is being performed that is relevant.
In essence, if you're performing a calculation and the result is an irrational number or recurring decimal, then there will be rounding errors when that number is squashed into the finite size data structure you're using. Since double is twice the size of float then the rounding error will be a lot smaller.
The tests may specifically use numbers which would cause this kind of error and therefore tested that you'd used the appropriate type in your code.
when try to make foreign key when using laravel migration
like this example:
user table
public function up()
{
Schema::create('flights', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->TinyInteger('color_id')->unsigned();
$table->foreign('color_id')->references('id')->on('colors');
$table->timestamps();
});
}
colors table
public function up()
{
Schema::create('flights', function (Blueprint $table) {
$table->increments('id');
$table->string('color');
$table->timestamps();
});
}
sometimes properties didn't work
[PDOException]
SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint
this error happened because the foreign key (type) in [user table] is deferent from primary key (type) in [colors table]
To solve this problem should change the primary key in [colors table]
$table->tinyIncrements('id');
When you use primary key $table->Increments('id');
you should use Integer
as a foreign key
$table-> unsignedInteger('fk_id');
$table->foreign('fk_id')->references('id')->on('table_name');
When you use primary key $table->tinyIncrements('id');
you should use unsignedTinyInteger
as a foreign key
$table-> unsignedTinyInteger('fk_id');
$table->foreign('fk_id')->references('id')->on('table_name');
When you use primary key $table->smallIncrements('id');
you should use unsignedSmallInteger
as a foreign key
$table-> unsignedSmallInteger('fk_id');
$table->foreign('fk_id')->references('id')->on('table_name');
When you use primary key $table->mediumIncrements('id');
you should use unsignedMediumInteger
as a foreign key
$table-> unsignedMediumInteger('fk_id');
$table->foreign('fk_id')->references('id')->on('table_name');
I would try the itemStateChanged()
method of the ItemListener
interface if jodonnell's solution fails.
<div style="width: 200px; border: 1px solid red;">
<br>
<div style="margin: 0px 50px 0px 50px; border: 1px solid blue;">
<br>
</div>
<br>
</div>
I created a website with ASP.Net WebForms where you can see the result of using all forms mentioned in previous responses from a site in Azure.
http://wfserverpaths.azurewebsites.net/
Summary:
Server.MapPath("/") => D:\home\site\wwwroot\
Server.MapPath("~") => D:\home\site\wwwroot\
HttpRuntime.AppDomainAppPath => D:\home\site\wwwroot\
HttpRuntime.AppDomainAppVirtualPath => /
AppDomain.CurrentDomain.BaseDirectory => D:\home\site\wwwroot\
HostingEnvironment.MapPath("/") => D:\home\site\wwwroot\
HostingEnvironment.MapPath("~") => D:\home\site\wwwroot\
localStorage.clear()
That'll clear the stored data. Then refresh and things should start to work.
With the help of this post, I have made a script that will install via the app Installous for rapid deployment:
# compress application.
/bin/mkdir -p $CONFIGURATION_BUILD_DIR/Payload
/bin/cp -R $CONFIGURATION_BUILD_DIR/MyApp.app $CONFIGURATION_BUILD_DIR/Payload
/bin/cp iTunesCrap/logo_itunes.png $CONFIGURATION_BUILD_DIR/iTunesArtwork
/bin/cp iTunesCrap/iTunesMetadata.plist $CONFIGURATION_BUILD_DIR/iTunesMetadata.plist
cd $CONFIGURATION_BUILD_DIR
# zip up the HelloWorld directory
/usr/bin/zip -r MyApp.ipa Payload iTunesArtwork iTunesMetadata.plist
What Is missing in the post referenced above, is the iTunesMetadata. Without this, Installous will not install apps correctly. Here is an example of an iTunesMetadata:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>appleId</key>
<string></string>
<key>artistId</key>
<integer>0</integer>
<key>artistName</key>
<string>MYCOMPANY</string>
<key>buy-only</key>
<true/>
<key>buyParams</key>
<string></string>
<key>copyright</key>
<string></string>
<key>drmVersionNumber</key>
<integer>0</integer>
<key>fileExtension</key>
<string>.app</string>
<key>genre</key>
<string></string>
<key>genreId</key>
<integer>0</integer>
<key>itemId</key>
<integer>0</integer>
<key>itemName</key>
<string>MYAPP</string>
<key>kind</key>
<string>software</string>
<key>playlistArtistName</key>
<string>MYCOMPANY</string>
<key>playlistName</key>
<string>MYAPP</string>
<key>price</key>
<integer>0</integer>
<key>priceDisplay</key>
<string>nil</string>
<key>rating</key>
<dict>
<key>content</key>
<string></string>
<key>label</key>
<string>4+</string>
<key>rank</key>
<integer>100</integer>
<key>system</key>
<string>itunes-games</string>
</dict>
<key>releaseDate</key>
<string>Sunday, December 12, 2010</string>
<key>s</key>
<integer>143441</integer>
<key>softwareIcon57x57URL</key>
<string></string>
<key>softwareIconNeedsShine</key>
<false/>
<key>softwareSupportedDeviceIds</key>
<array>
<integer>1</integer>
</array>
<key>softwareVersionBundleId</key>
<string>com.mycompany.myapp</string>
<key>softwareVersionExternalIdentifier</key>
<integer>0</integer>
<key>softwareVersionExternalIdentifiers</key>
<array>
<integer>1466803</integer>
<integer>1529132</integer>
<integer>1602608</integer>
<integer>1651681</integer>
<integer>1750461</integer>
<integer>1930253</integer>
<integer>1961532</integer>
<integer>1973932</integer>
<integer>2026202</integer>
<integer>2526384</integer>
<integer>2641622</integer>
<integer>2703653</integer>
</array>
<key>vendorId</key>
<integer>0</integer>
<key>versionRestrictions</key>
<integer>0</integer>
</dict>
</plist>
Obviously, replace all instances of MyApp with the name of your app and MyCompany with the name of your company.
Basically, this will install on any jailbroken device with Installous installed. After it is set up, this results in very fast deployment, as it can be installed from anywhere, just upload it to your companies website, and download the file directly to the device, and copy / move it to ~/Documents/Installous/Downloads
.
IoC/DI is a design concept, but unfortunately it's often taken as a concept that applies to certain languages (or typing systems). I'd love to see dependency injection containers become far more popular in Python. There's Spring, but that's a super-framework and seems to be a direct port of the Java concepts without much consideration for "The Python Way."
Given Annotations in Python 3, I decided to have a crack at a full featured, but simple, dependency injection container: https://github.com/zsims/dic . It's based on some concepts from a .NET dependency injection container (which IMO is fantastic if you're ever playing in that space), but mutated with Python concepts.
Its really helped me to dynamically generate ids of showDetailItem
for the below code.
<af:forEach id="fe1" items="#{viewScope.bean.tranTypeList}" var="ttf" varStatus="ttfVs" >
<af:showDetailItem id ="divIDNo${ttfVs.count}" text="#{ttf.trandef}"......>
if you execute this line <af:outputText value="#{ttfVs}"/>
prints the below:
{index=3, count=4, last=false, first=false, end=8, step=1, begin=0}
I try to write working code example, I test it and everything works.
Hare is code:
HTML:
<input type="file" class="attachment_input" name="file" onchange="checkFileSize(this, @Model.MaxSize.ToString(),@Html.Raw(Json.Encode(Model.FileExtensionsList)))" />
Javascript:
//function for check attachment size and extention match
function checkFileSize(element, maxSize, extentionsArray) {
var val = $(element).val(); //get file value
var ext = val.substring(val.lastIndexOf('.') + 1).toLowerCase(); // get file extention
if ($.inArray(ext, extentionsArray) == -1) {
alert('false extension!');
}
var fileSize = ($(element)[0].files[0].size / 1024 / 1024); //size in MB
if (fileSize > maxSize) {
alert("Large file");// if Maxsize from Model > real file size alert this
}
}
sentence.sub! 'Robert', 'Joe'
Won't cause an exception if the replaced word isn't in the sentence (the []=
variant will).
The above replaces only the first instance of "Robert".
To replace all instances use gsub
/gsub!
(ie. "global substitution"):
sentence.gsub! 'Robert', 'Joe'
The above will replace all instances of Robert with Joe.
I faced this issue when working on an Ubuntu 20.04 server.
I was trying to run a sudo
command from a remote machine to deploy an app to the server. However when I run the command I get the error:
sudo: no tty present and no askpass program specified
The remote script failed with exit code 1
Here's how I fixed it:
The issue is caused by executing a sudo
command which tries to request for a password, but sudo
does not have access to a tty
to prompt the user for a passphrase. As it can’t find a tty
, sudo
falls back to an askpass
method but can’t find an askpass
command configured, so the sudo
command fails.
To fix this you need to be able to run sudo
for that specific user with no password requirements. The no password requirements is configured in the /etc/sudoers
file. To configure it run either of the commands below:
sudo nano /etc/sudoers
OR
sudo visudo
Note: This opens the /etc/sudoers
file using your default editor.
Next, Add the following line at the bottom of the file:
# Allow my_user to run all commands without password
my_user ALL=(ALL) NOPASSWD:ALL
Note: Replace my_user
with your actual user
If you want the user to run specific commands you can specify them
# Allow my_user to run specific commands without password
my_user ALL=(ALL) NOPASSWD:/bin/myCommand
OR
# Allow my_user to run specific commands without password
my_user ALL=(ALL) NOPASSWD: /bin/myCommand, /bin/myCommand, /bin/myCommand
Save the changes and exit the file.
For more help, read the resource in this link: sudo: no tty present and no askpass program specified
That's all.
I hope this helps
./gradlew
Your directory with gradlew is not included in the PATH, so you must specify path to the gradlew. .
means "current directory".
wget -r http://mysite.com/configs/.vim/
works for me.
Perhaps you have a .wgetrc which is interfering with it?
What about using Replace all? Just replace All on bracket to space. And comma to space. And I think you can achieve it.
Reducing just the padding on the columns won't make the trick, as you will extend the width of the page, making it uneven with the rest of your page, say navbar. You need to equally reduce the negative margin on the row. Taking @martinedwards' LESS example:
.row-no-padding {
margin-left: 0;
margin-right: 0;
[class*="col-"] {
padding-left: 0 !important;
padding-right: 0 !important;
}
}
You use something like
from flask import send_file
@app.route('/get_image')
def get_image():
if request.args.get('type') == '1':
filename = 'ok.gif'
else:
filename = 'error.gif'
return send_file(filename, mimetype='image/gif')
to send back ok.gif
or error.gif
, depending on the type query parameter. See the documentation for the send_file
function and the request
object for more information.
Based on First answer here is the complete image selection options:
Filter = @"|All Image Files|*.BMP;*.bmp;*.JPG;*.JPEG*.jpg;*.jpeg;*.PNG;*.png;*.GIF;*.gif;*.tif;*.tiff;*.ico;*.ICO
|PNG|*.PNG;*.png
|JPEG|*.JPG;*.JPEG*.jpg;*.jpeg
|Bitmap(.BMP,.bmp)|*.BMP;*.bmp
|GIF|*.GIF;*.gif
|TIF|*.tif;*.tiff
|ICO|*.ico;*.ICO";
Here's one way. You have to get the individual components from the date object (day, month & year) and then build and format the string however you wish.
n = new Date();_x000D_
y = n.getFullYear();_x000D_
m = n.getMonth() + 1;_x000D_
d = n.getDate();_x000D_
document.getElementById("date").innerHTML = m + "/" + d + "/" + y;
_x000D_
<p id="date"></p>
_x000D_
As stated in 1.7.12 Release Notes, you may use
$ git rebase -i --root
Here's an idea. Load all of your audio for a certain class of sounds into a single individual audio element where the src data is all of your samples in a contiguous audio file (probably want some silence between so you can catch and cut the samples with a timeout with less risk of bleeding to the next sample). Then, seek to the sample and play it when needed.
If you need more than one of these to play you can create an additional audio element with the same src so that it is cached. Now, you effectively have multiple "tracks". You can utilize groups of tracks with your favorite resource allocation scheme like Round Robin etc.
You could also specify other options like queuing sounds into a track to play when that resource becomes available or cutting a currently playing sample.
Maybe not better but in my opinion more readable is to create an extension method
public static bool IsNull(this object obj) {
return obj == null;
}
This is the code from the accepted answer above, with some changes made regarding the Base64 encoding. The code below compiles.
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.commons.codec.binary.Base64;
public class HttpBasicAuth {
public static void main(String[] args) {
try {
URL url = new URL ("http://ip:port/login");
Base64 b = new Base64();
String encoding = b.encodeAsString(new String("test1:test1").getBytes());
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty ("Authorization", "Basic " + encoding);
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
}
catch(Exception e) {
e.printStackTrace();
}
}
}
They aren't really concepts but rather specific keywords that tend to occur (with slightly different semantics) in popular languages like C++ and Java.
Essentially, they are meant to allow a class to restrict access to members (fields or functions). The idea is that the less one type is allowed to access in another type, the less dependency can be created. This allows the accessed object to be changed more easily without affecting objects that refer to it.
Broadly speaking, public means everyone is allowed to access, private means that only members of the same class are allowed to access, and protected means that members of subclasses are also allowed. However, each language adds its own things to this. For example, C++ allows you to inherit non-publicly. In Java, there is also a default (package) access level, and there are rules about internal classes, etc.
Depending on your use case, instead of using a case statement, you can use the union of multiple select statements, one for each condition.
My goal when I found this question was to select multiple columns conditionally. I didn't necessarily need the case statement, so this is what I did.
For example:
SELECT
a1,
a2,
a3,
...
WHERE <condition 1>
AND (<other conditions>)
UNION
SELECT
b1,
b2,
b3,
...
WHERE <condition 2>
AND (<other conditions>)
UNION
SELECT
...
-- and so on
Be sure that exactly one condition evaluates to true at a time.
I'm using Postgresql, and the query planner was smart enough to not run a select statement at all if the condition in the where clause evaluated to false (i.e. only one of the select statement actually runs), so this was also performant for me.
points = (pixels / 96) * 72 on a standard XP/Vista/7 machine (factory defaults)
points = (pixels / 72) * 72 on a standard Mac running OSX (Factory defaults)
Windows runs as default at 96dpi (display) Macs run as default at 72 dpi (display)
72 POSTSCRIPT Points = 1 inch 12 POSTSCRIPT Points = 1 POSTSCRIPT Pica 6 POSTSCRIPT Picas = 72 Points = 1 inch
1 point = 1/72 inches = 25.4/72 mm = 0.3527 mm
DPI = Dots Per Inch PPI = Pixels Per Inch LPI = Lines per inch
More info if using em as measuring
16px = 1em (default for normal text) 8em = 16px * 8 Pixels/16 = em
gethostname()
is POSIX way to get local host name. Check out man
.
BSD function getdomainname()
can give you domain name so you can build fully qualified hostname. There is no POSIX way to get a domain I'm afraid.
Use this code to pass arraylist<customobj>
to anthother Activity
firstly serialize our contact bean
public class ContactBean implements Serializable {
//do intialization here
}
Now pass your arraylist
Intent intent = new Intent(this,name of activity.class);
contactBean=(ConactBean)_arraylist.get(position);
intent.putExtra("contactBeanObj",conactBean);
_activity.startActivity(intent);
Split it by space
and take first part like below. Hope this will help you.
var d = '12/12/1955 12:00:00 AM';
d = d.split(' ')[0];
console.log(d);
Bear in mind the consequences
SELECT REPLACE(REPLACE('TEST123','123','456'),'45','89') FROM DUAL;
will replace the 123 with 456, then find that it can replace the 45 with 89. For a function that had an equivalent result, it would have to duplicate the precedence (ie replacing the strings in the same order).
Similarly, taking a string 'ABCDEF', and instructing it to replace 'ABC' with '123' and 'CDE' with 'xyz' would still have to account for a precedence to determine whether it went to '123EF' or ABxyzF'.
In short, it would be difficult to come up with anything generic that would be simpler than a nested REPLACE (though something that was more of a sprintf style function would be a useful addition).
I think you really need pandoc, which great software was designed and built just for this task :) Besides pdf, you could convert your md file to e.g. docx or odt among others.
Well, installing an up-to-date version of Pandoc might be challanging on Linux (as you would need the entire haskell-platform
?to build from the sources), but really easy on Windows/Mac with only a few megabytes of download.
If you have the brewed/knitted markdown file you can just call pandoc
in e.g bash or with the system
function within R. A POC demo of that latter is implemented in the ?andoc.convert
function of my little package (which you must be terribly bored of as I try to point your attention there at every opportunity).
In your authentication service, set the currently authenticated user on the root scope.
// AuthService.js
// auth successful
$rootScope.user = user
// AdminController.js
.config(function ($routeProvider) {
$routeProvider.when('/admin', {
controller: 'AdminController',
auth: function (user) {
return user && user.isAdmin
}
})
})
// index.js
.run(function ($rootScope, $location) {
$rootScope.$on('$routeChangeStart', function (ev, next, curr) {
if (next.$$route) {
var user = $rootScope.user
var auth = next.$$route.auth
if (auth && !auth(user)) { $location.path('/') }
}
})
})
Alternatively you can set permissions on the user object and assign each route a permission, then check the permission in the event callback.
You could use LINQ, and save yourself the explicit parsing:
string test = "9586-202-10072";
string lastFragment = test.Split('-').Last();
Console.WriteLine(lastFragment);
Creating a .bashrc file in your home directory also works. That way you don't have to copy your .bash_profile every time you install a new version of git bash.
DECLARE @q nvarchar(4000)
SET @q = 'DECLARE @tmp TABLE (code VARCHAR(50), mount MONEY)
INSERT INTO @tmp
(
code,
mount
)
SELECT coa_code,
amount
FROM T_Ledger_detail
SELECT *
FROM @tmp'
EXEC sp_executesql @q
If you want in dynamic query
In addition to above : Trailing closure can be used .
downloadFileFromURL(NSURL(string: "url_str")!) { (success) -> Void in
// When download completes,control flow goes here.
if success {
// download success
} else {
// download fail
}
}
You need to initialize the list first:
protected List<string> list = new List<string>();
Additional Version of PHP can be installed directly from the APP (using MAMP PRO v5 at least).
Here's how (All Steps):
MAMP PRO --> Preferences --> click [Check Now] to check for updates (even if you have automatic updates enabled!) --> click [Show PHP Versions] --> Install as needed!
Step-by-step screenshots:
int[][] matrix = {
{1,2,3},
{4,5,6},
{7,8,9},
{10,11,12}
};
printMatrix(matrix);
public void printMatrix(int[][] m){
try{
int rows = m.length;
int columns = m[0].length;
String str = "|\t";
for(int i=0;i<rows;i++){
for(int j=0;j<columns;j++){
str += m[i][j] + "\t";
}
System.out.println(str + "|");
str = "|\t";
}
}catch(Exception e){System.out.println("Matrix is empty!!");}
}
Output:
| 1 2 3 |
| 4 5 6 |
| 7 8 9 |
| 10 11 12 |
I've just tested a few browsers using this silly bit of JavaScript:
function log_newline(msg, test_value) {_x000D_
if (!test_value) { _x000D_
test_value = document.getElementById('test').value;_x000D_
}_x000D_
console.log(msg + ': ' + (test_value.match(/\r/) ? 'CR' : '')_x000D_
+ ' ' + (test_value.match(/\n/) ? 'LF' : ''));_x000D_
}_x000D_
_x000D_
log_newline('HTML source');_x000D_
log_newline('JS string', "foo\nbar");_x000D_
log_newline('JS template literal', `bar_x000D_
baz`);
_x000D_
<textarea id="test" name="test">_x000D_
_x000D_
</textarea>
_x000D_
IE8 and Opera 9 on Windows use \r\n
. All the other browsers I tested (Safari 4 and Firefox 3.5 on Windows, and Firefox 3.0 on Linux) use \n
. They can all handle \n
just fine when setting the value, though IE and Opera will convert that back to \r\n
again internally. There's a SitePoint article with some more details called Line endings in Javascript.
Note also that this is independent of the actual line endings in the HTML file itself (both \n
and \r\n
give the same results).
When submitting a form, all browsers canonicalize newlines to %0D%0A
in URL encoding. To see that, load e.g. data:text/html,<form><textarea name="foo">foo%0abar</textarea><input type="submit"></form>
and press the submit button. (Some browsers block the load of the submitted page, but you can see the URL-encoded form values in the console.)
I don't think you really need to do much of any determining, though. If you just want to split the text on newlines, you could do something like this:
lines = foo.value.split(/\r\n|\r|\n/g);
In Eclipse:
Window -> Preferences -> Android -> Lint Error Checking.
In the list find an entry with ID = ProtectedPermission
. Set the Severity to something lower than Error. This way you can still compile the project using Eclipse.
In Android Studio:
File -> Settings -> Editor -> Inspections
Under Android Lint
, locate Using system app permission
. Either uncheck the checkbox or choose a Severity lower than Error.
To read the user input and store it in a variable, for later use, you can use SQL*Plus command ACCEPT
.
Accept <your variable> <variable type if needed [number|char|date]> prompt 'message'
example
accept x number prompt 'Please enter something: '
And then you can use the x
variable in a PL/SQL block as follows:
declare
a number;
begin
a := &x;
end;
/
Working with a string example:
accept x char prompt 'Please enter something: '
declare
a varchar2(10);
begin
a := '&x'; -- for a substitution variable of char data type
end; -- to be treated as a character string it needs
/ -- to be enclosed with single quotation marks
You can do the following:
Explanation:
When the templates are loaded, they are searched in your INSTALLED_APPS variable in settings.py . The order is dictated by the definition's rank in INSTALLED_APPS, so since your app come before 'django.contrib.auth' your template were loaded (reference: https://docs.djangoproject.com/en/dev/ref/templates/api/#django.template.loaders.app_directories.Loader).
Motivation of approach:
df.groupby(['Fruit','Name'])['Number'].sum()
You can select different columns to sum numbers.
You can use this CSS to "simulate" an underline:
text-decoration: none;
border-bottom: 1px solid #000;
Using jQuery
Create a second column and move over the elements you need into it.
<script type="text/javascript">
$(document).ready(function() {
var size = $("#data > p").size();
$(".Column1 > p").each(function(index){
if (index >= size/2){
$(this).appendTo("#Column2");
}
});
});
</script>
<div id="data" class="Column1" style="float:left;width:300px;">
<!-- data Start -->
<p>This is paragraph 1. Lorem ipsum ... </p>
<p>This is paragraph 2. Lorem ipsum ... </p>
<p>This is paragraph 3. Lorem ipsum ... </p>
<p>This is paragraph 4. Lorem ipsum ... </p>
<p>This is paragraph 5. Lorem ipsum ... </p>
<p>This is paragraph 6. Lorem ipsum ... </p>
<!-- data Emd-->
</div>
<div id="Column2" style="float:left;width:300px;"></div>
Update:
Or Since the requirement now is to have them equally sized. I would suggest using the prebuilt jQuery plugins: Columnizer jQuery Plugin
The accepted answer was correct up until July 2011. To get the latest version, including the Service Pack you should find the latest version as described here:
For example, if you check the SP2 CTP and SP1, you'll find the latest version of SQL Server Management Studio under SP1:
Download the 32-bit (x86) or 64-bit (x64) version of the SQLManagementStudio*.exe files as appropriate and install it. You can find out whether your system is 32-bit or 64-bit by right clicking Computer, selecting Properties and looking at the System Type.
Although you could apply the service pack to the base version that results from following the accepted answer, it's easier to just download the latest version of SQL Server Management Studio and simply install it in one step.
var request = require('request');
request.post('http://localhost/test2.php',
{form:{ mes: "heydude" }},
function(error, response, body){
console.log(body);
});
It's good practice to give a parent to your QTimer
to use Qt's memory management system.
update()
is a QWidget function - is that what you are trying to call or not? http://qt-project.org/doc/qt-4.8/qwidget.html#update.
If number 2 does not apply, make sure that the function you are trying to trigger is declared as a slot in the header.
Finally if none of these are your issue, it would be helpful to know if you are getting any run-time connect errors.
It is an implementation of Pythagorean theorem. Link: http://en.wikipedia.org/wiki/Pythagorean_theorem
With pandas version 0.16.1
and up, there is now a DataFrame.sample
method built-in:
import pandas
df = pandas.DataFrame(pandas.np.random.random(100))
# Randomly sample 70% of your dataframe
df_percent = df.sample(frac=0.7)
# Randomly sample 7 elements from your dataframe
df_elements = df.sample(n=7)
For either approach above, you can get the rest of the rows by doing:
df_rest = df.loc[~df.index.isin(df_percent.index)]
It can be done using below script... It will first fetch all branches and checkout one by one and update by itself.
#!/bin/bash
git branch -r | grep -v '\->' | while read remote; do git branch --track
"${remote#origin/}" "$remote"; done
set -x
CURRENT=`git rev-parse --abbrev-ref HEAD`
git fetch --all
branch_name=$(git branch | awk '{print $1" "}' | grep -v '*' | xargs)
for branch in $branch_name; do
git checkout "$branch" || exit 1
git rebase "origin/$branch" || exit 1
git pull origin $branch|| exit 1
done
git checkout "$CURRENT" || exit 1
git pull || exit 1
$array = 1..5 | foreach { $false }
Re: craigts's response, for anyone having trouble with using either False or None parameters for index_col, such as in cases where you're trying to get rid of a range index, you can instead use an integer to specify the column you want to use as the index. For example:
df = pd.read_csv('file.csv', index_col=0)
The above will set the first column as the index (and not add a range index in my "common case").
Given the popularity of this answer, I thought i'd add some context/ a demo:
# Setting up the dummy data
In [1]: df = pd.DataFrame({"A":[1, 2, 3], "B":[4, 5, 6]})
In [2]: df
Out[2]:
A B
0 1 4
1 2 5
2 3 6
In [3]: df.to_csv('file.csv', index=None)
File[3]:
A B
1 4
2 5
3 6
Reading without index_col or with None/False will all result in a range index:
In [4]: pd.read_csv('file.csv')
Out[4]:
A B
0 1 4
1 2 5
2 3 6
# Note that this is the default behavior, so the same as In [4]
In [5]: pd.read_csv('file.csv', index_col=None)
Out[5]:
A B
0 1 4
1 2 5
2 3 6
In [6]: pd.read_csv('file.csv', index_col=False)
Out[6]:
A B
0 1 4
1 2 5
2 3 6
However, if we specify that "A" (the 0th column) is actually the index, we can avoid the range index:
In [7]: pd.read_csv('file.csv', index_col=0)
Out[7]:
B
A
1 4
2 5
3 6
As the accepted solution of @Shane is not supported in RStudio (see here) as of now (Sep 2015), I would like to add an advice to @James Thompson answer regarding workflow:
If you use SumatraPDF as viewer you do not need to close the PDF file before making changes to it. Sumatra does not put a opened file in read-only and thus does not prevent it from being overwritten. Therefore, once you opened your PDF file with Sumatra, changes out of RStudio (or any other R IDE) are immediately displayed in Sumatra.
For gradle / maven project you can use src/main/webapp/WEB-INF folder by default:
- main
- - java
- - resources
- - webapp
- - - META-INF
- - - - context.xml
- - - WEB-INF
- - - - web.xml
If using MySQL Workbench, simply look in the Session tab in the Information pane located in the sidebar.
Using JavaScript
will definitely do the job.
You can also use Content
if this is more your style.
Example:
MVC Controller
[HttpPost]
public ActionResult AjaxMethod()
{
return Content(@"http://www.google.co.uk");
}
Javascript
$.ajax({
type: 'POST',
url: '/AjaxMethod',
success: function (redirect) {
window.location = redirect;
}
});
modify() in your example is a private function, that won't be accessible from anywhere but within your A, B or C definition. You would need to declare it as
this.modify = function(){}
C has no reference to its parents, unless you pass it to C. If C is set up to inherit from A or B, it will inherit its public methods (not its private functions like you have modify() defined). Once C inherits methods from its parent, you can override the inherited methods.
I would just use
string data= "/temp string";
data = data.substring(1)
Output:
temp string
That always works for me.
I hope your stored procedure is not doing a cursor loop!
If not, take the query from your stored procedure and integrate that query within the query you are posting here:
SELECT t.TenantName, t.CarPlateNumber, t.CarColor, t.Sex, t.SSNO, t.Phone, t.Memo,
u.UnitNumber,
p.PropertyName
,dt.TenantBalance
FROM tblTenant t
LEFT JOIN tblRentalUnit u ON t.UnitID = u.ID
LEFT JOIN tblProperty p ON u.PropertyID = p.ID
LEFT JOIN (SELECT ID, SUM(ISNULL(trans.Amount,0)) AS TenantBalance
FROM tblTransaction
GROUP BY tenant.ID
) dt ON t.ID=dt.ID
ORDER BY p.PropertyName, t.CarPlateNumber
If you are doing something more than a query in your stored procedure, create a temp table and execute the stored procedure into this temp table and then join to that in your query.
create procedure test_proc
as
select 1 as x, 2 as y
union select 3,4
union select 5,6
union select 7,8
union select 9,10
return 0
go
create table #testing
(
value1 int
,value2 int
)
INSERT INTO #testing
exec test_proc
select
*
FROM #testing
if you need a lighter solution i recommend mysql-shell, install using the command below.
brew cask install mysql-shell
To start after installation type mysqlsh.
It sounds to me like you're having core.autocrlf-problems. core.autocrlf=true can give problems like the ones you describe on Windows if CRLF newlines were checked into the repository. Try disabling core.autocrlf for the repository, and perform a hard-reset.
JFrame
is the window; it can have one or more JPanel
instances inside it. JPanel
is not the window.
You need a Swing tutorial:
Set the Format to Custom and then specify the format:
dateTimePicker1.Format = DateTimePickerFormat.Custom;
dateTimePicker1.CustomFormat = "MM/dd/yyyy hh:mm:ss";
or however you want to lay it out. You could then type in directly the date/time. If you use MMM, you'll need to use the numeric value for the month for entry, unless you write some code yourself for that (e.g., 5 results in May)
Don't know about the picker for date and time together. Sounds like a custom control to me.
Considering you want to check for ASCII Alphanumeric characters, Try this:
"^[a-zA-Z0-9]*$"
. Use this RegEx in String.matches(Regex)
, it will return true if the string is alphanumeric, else it will return false.
public boolean isAlphaNumeric(String s){
String pattern= "^[a-zA-Z0-9]*$";
return s.matches(pattern);
}
If it will help, read this for more details about regex: http://www.vogella.com/articles/JavaRegularExpressions/article.html
function sleep(num) {
var now = new Date();
var stop = now.getTime() + num;
while(true) {
now = new Date();
if(now.getTime() > stop) return;
}
}
sleep(1000); // 1 second
alert('here');
this code work well for me.
In order to do this you need to attach the handler to a specific anchor on the page. For operations like this it's much easier to use a standard framework like jQuery. For example if I had the following HTML
HTML:
<a id="theLink">Click Me</a>
I could use the following jQuery to hookup an event to that specific link.
// Use ready to ensure document is loaded before running javascript
$(document).ready(function() {
// The '#theLink' portion is a selector which matches a DOM element
// with the id 'theLink' and .click registers a call back for the
// element being clicked on
$('#theLink').click(function (event) {
// This stops the link from actually being followed which is the
// default action
event.preventDefault();
var answer confirm("Please click OK to continue");
if (!answer) {
window.location="http://www.continue.com"
}
});
});
In Java 8 you can also use .stream().sorted():
myMap.keySet().stream().sorted().forEach(key -> {
String value = myMap.get(key);
System.out.println("key: " + key);
System.out.println("value: " + value);
}
);
All of the solutions given here haven't helped (I'm constrained to python 2.6.6). I've found the answer in a simple switch to pass to pip:
$ sudo pip install --trusted-host pypi.python.org <module_name>
This tells pip that it's OK to grab the module from pypi.python.org.
For me, the issue is my company's proxy behind it's firewall that makes it look like a malicious client to some servers. Hooray security.
Update: See @Alex 's
answer for changes in the PyPi domains, and additional --trusted-host
options that can be added. (I'd copy/paste here, but his answer, so +1 him)
Also, you can just set the ViewName:
return View("ViewName");
Full controller example:
public ActionResult SomeAction() {
if (condition)
{
return View("CustomView");
}else{
return View();
}
}
This works on MVC 5.
To get last month's first date:
select DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-1, 0) LastMonthFirstDate
To get last month's last date:
select DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1) LastMonthEndDate
The MSDN documentation seems to hint that Clone should perform a deep copy, but it is never explicitly stated:
The ICloneable interface contains one member, Clone, which is intended to support cloning beyond that supplied by MemberWiseClone… The MemberwiseClone method creates a shallow copy…
You can find my post helpful.
/C
Carries out the command specified by the string and then terminates.
You can get all the cmd command line switches by typing cmd /?
.
List.clear
would remove the elements without reducing the capacity of the list.
groovy:000> mylist = [1,2,3,4,5,6,7,8,9,10,11,12]
===> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
groovy:000> mylist.elementData.length
===> 12
groovy:000> mylist.elementData
===> [Ljava.lang.Object;@19d6af
groovy:000> mylist.clear()
===> null
groovy:000> mylist.elementData.length
===> 12
groovy:000> mylist.elementData
===> [Ljava.lang.Object;@19d6af
groovy:000> mylist = new ArrayList();
===> []
groovy:000> mylist.elementData
===> [Ljava.lang.Object;@2bfdff
groovy:000> mylist.elementData.length
===> 10
Here mylist got cleared, the references to the elements held by it got nulled out, but it keeps the same backing array. Then mylist was reinitialized and got a new backing array, the old one got GCed. So one way holds onto memory, the other one throws out its memory and gets reallocated from scratch (with the default capacity). Which is better depends on whether you want to reduce garbage-collection churn or minimize the current amount of unused memory. Whether the list sticks around long enough to be moved out of Eden might be a factor in deciding which is faster (because that might make garbage-collecting it more expensive).
You can call .prop("tagName")
. Examples:
jQuery("<a>").prop("tagName"); //==> "A"
jQuery("<h1>").prop("tagName"); //==> "H1"
jQuery("<coolTagName999>").prop("tagName"); //==> "COOLTAGNAME999"
If writing out .prop("tagName")
is tedious, you can create a custom function like so:
jQuery.fn.tagName = function() {
return this.prop("tagName");
};
Examples:
jQuery("<a>").tagName(); //==> "A"
jQuery("<h1>").tagName(); //==> "H1"
jQuery("<coolTagName999>").tagName(); //==> "COOLTAGNAME999"
Note that tag names are, by convention, returned CAPITALIZED. If you want the returned tag name to be all lowercase, you can edit the custom function like so:
jQuery.fn.tagNameLowerCase = function() {
return this.prop("tagName").toLowerCase();
};
Examples:
jQuery("<a>").tagNameLowerCase(); //==> "a"
jQuery("<h1>").tagNameLowerCase(); //==> "h1"
jQuery("<coolTagName999>").tagNameLowerCase(); //==> "cooltagname999"
Posting it here as it might help others. In string it might be necessary to pass the quotes to jq. To do the following with jq:
.items[] | select(.name=="string")
in bash you could do
EMAILID=$1
projectID=$(cat file.json | jq -r '.resource[] | select(.username=='\"$EMAILID\"') | .id')
essentially escaping the quotes and passing it on to jq
-f is the correct flag, but for the test operator, not rm
[ -f "$THEFILE" ] && rm "$THEFILE"
this ensures that the file exists and is a regular file (not a directory, device node etc...)
Dir[File.dirname(__FILE__) + '/../lib/*.rb'].each do |file|
require File.basename(file, File.extname(file))
end
If you don't strip the extension then you may end up requiring the same file twice (ruby won't realize that "foo" and "foo.rb" are the same file). Requiring the same file twice can lead to spurious warnings (e.g. "warning: already initialized constant").
Windows 10 appears to have a keyboard shortcut. According to How to open elevated command prompt in Windows 10 you can press ctrl + shift + enter from the search or start menu after typing cmd
for the search term.
(source: winaero.com)
I think you just need to create your volume outside docker first with a docker create -v /location --name
and then reuse it.
And by the time I used to use docker a lot, it wasn't possible to use a static docker volume with dockerfile definition so my suggestion is to try the command line (eventually with a script ) .
An option is to use the OkHttp client, from Square.
Add the library dependency
In the build.gradle, include this line:
compile 'com.squareup.okhttp:okhttp:x.x.x'
Where x.x.x
is the desired library version.
Set the client
For example, if you want to set a timeout of 60 seconds, do this way:
final OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.setReadTimeout(60, TimeUnit.SECONDS);
okHttpClient.setConnectTimeout(60, TimeUnit.SECONDS);
ps: If your minSdkVersion is greater than 8, you can use TimeUnit.MINUTES
. So, you can simply use:
okHttpClient.setReadTimeout(1, TimeUnit.MINUTES);
okHttpClient.setConnectTimeout(1, TimeUnit.MINUTES);
For more details about the units, see TimeUnit.
I shall refer to the same sample of data as posted in the question:
import numpy as np
import pandas as pd
df = pd.DataFrame(np.random.randn(8, 4), columns=['A','B','C','D'])
print('The original data frame is: \n{}'.format(df))
Running this code will give you
The original data frame is:
A B C D
0 0.494824 -0.328480 0.818117 0.100290
1 0.239037 0.954912 -0.186825 -0.651935
2 -1.818285 -0.158856 0.359811 -0.345560
3 -0.070814 -0.394711 0.081697 -1.178845
4 -1.638063 1.498027 -0.609325 0.882594
5 -0.510217 0.500475 1.039466 0.187076
6 1.116529 0.912380 0.869323 0.119459
7 -1.046507 0.507299 -0.373432 -1.024795
Now you wish to append a new row to this data frame, which doesn't need to be copy of any other row in the data frame. @Alon suggested an interesting approach to use df.loc
to append a new row with different index. The issue, however, with this approach is if there is already a row present at that index, it will be overwritten by new values. This is typically the case for datasets when row index is not unique, like store ID in transaction datasets. So a more general solution to your question is to create the row, transform the new row data into a pandas series, name it to the index you want to have and then append it to the data frame. Don't forget to overwrite the original data frame with the one with appended row. The reason is df.append
returns a view of the dataframe and does not modify its contents. Following is the code:
row = pd.Series({'A':10,'B':20,'C':30,'D':40},name=3)
df = df.append(row)
print('The new data frame is: \n{}'.format(df))
Following would be the new output:
The new data frame is:
A B C D
0 0.494824 -0.328480 0.818117 0.100290
1 0.239037 0.954912 -0.186825 -0.651935
2 -1.818285 -0.158856 0.359811 -0.345560
3 -0.070814 -0.394711 0.081697 -1.178845
4 -1.638063 1.498027 -0.609325 0.882594
5 -0.510217 0.500475 1.039466 0.187076
6 1.116529 0.912380 0.869323 0.119459
7 -1.046507 0.507299 -0.373432 -1.024795
3 10.000000 20.000000 30.000000 40.000000
Knowledge of high level programming languages (C/C++, Java, PHP, Python, Perl, etc.) would suggest to the layman that Bourne Again Shell (Bash) functions should work like they do in those other languages.
Instead, Bash functions work like shell commands and expect arguments to be passed to them in the same way one might pass an option to a shell command (e.g. ls -l
). In effect, function arguments in Bash are treated as positional parameters ($1, $2..$9, ${10}, ${11}
, and so on). This is no surprise considering how getopts
works. Do not use parentheses to call a function in Bash.
(Note: I happen to be working on OpenSolaris at the moment.)
# Bash style declaration for all you PHP/JavaScript junkies. :-)
# $1 is the directory to archive
# $2 is the name of the tar and zipped file when all is done.
function backupWebRoot ()
{
tar -cvf - "$1" | zip -n .jpg:.gif:.png "$2" - 2>> $errorlog &&
echo -e "\nTarball created!\n"
}
# sh style declaration for the purist in you. ;-)
# $1 is the directory to archive
# $2 is the name of the tar and zipped file when all is done.
backupWebRoot ()
{
tar -cvf - "$1" | zip -n .jpg:.gif:.png "$2" - 2>> $errorlog &&
echo -e "\nTarball created!\n"
}
# In the actual shell script
# $0 $1 $2
backupWebRoot ~/public/www/ webSite.tar.zip
Want to use names for variables? Just do something this.
local filename=$1 # The keyword declare can be used, but local is semantically more specific.
Be careful, though. If an argument to a function has a space in it, you may want to do this instead! Otherwise, $1
might not be what you think it is.
local filename="$1" # Just to be on the safe side. Although, if $1 was an integer, then what? Is that even possible? Humm.
Want to pass an array to a function?
callingSomeFunction "${someArray[@]}" # Expands to all array elements.
Inside the function, handle the arguments like this.
function callingSomeFunction ()
{
for value in "$@" # You want to use "$@" here, not "$*" !!!!!
do
:
done
}
Need to pass a value and an array, but still use "$@" inside the function?
function linearSearch ()
{
local myVar="$1"
shift 1 # Removes $1 from the parameter list
for value in "$@" # Represents the remaining parameters.
do
if [[ $value == $myVar ]]
then
echo -e "Found it!\t... after a while."
return 0
fi
done
return 1
}
linearSearch $someStringValue "${someArray[@]}"
Unfortunately, this is not currently possible in the latest version of DataContractJsonSerializer. See: http://connect.microsoft.com/VisualStudio/feedback/details/558686/datacontractjsonserializer-should-serialize-dictionary-k-v-as-a-json-associative-array
The current suggested workaround is to use the JavaScriptSerializer as Mark suggested above.
Good luck!
To create both of the created_at
and updated_at
columns:
$t->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP'));
$t->timestamp('updated_at')->default(DB::raw('CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP'));
You will need MySQL version >= 5.6.5 to have multiple columns with CURRENT_TIMESTAMP
Adding these two lines fixed this problem for me
"responsive": true,
"bAutoWidth": true
There is now a responsive plugin available: https://datatables.net/extensions/responsive/. However, in my experience I have found that there are still a few bugs. It's still the best solution I've found so far.
You are providing a string representation of a dict to the DataFrame constructor, and not a dict itself. So this is the reason you get that error.
So if you want to use your code, you could do:
df = DataFrame(eval(data))
But better would be to not create the string in the first place, but directly putting it in a dict. Something roughly like:
data = []
for row in result_set:
data.append({'value': row["tag_expression"], 'key': row["tag_name"]})
But probably even this is not needed, as depending on what is exactly in your result_set
you could probably:
DataFrame(result_set)
read_sql_query
function to do this for you (see docs on this)As a variation on the accepted answer you could also use the change_column_default
method in your migrations:
def up
change_column_default :profiles, :show_attribute, true
end
def down
change_column_default :profiles, :show_attribute, nil
end
open f, "test.txt"
$file = join '', <f>
<f>
- returns an array of lines from our file (if $/
has the default value "\n"
) and then join ''
will stick this array into.
You could declare your functions outside of the module.exports
block.
var foo = function (req, res, next) {
return ('foo');
}
var bar = function (req, res, next) {
return foo();
}
Then:
module.exports = {
foo: foo,
bar: bar
}
Why don't you try to grep the return of your command ? Something like :
adb devices -l | grep 123abc12
It should return only the line you want to.
String timestamp="";
Date temp=null;
try {
temp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(getDateCurrentTimeZone(Long.parseLong(timestamp)));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int dayMonth=temp.getDate();
int dayWeek=temp.getDay();
int hour=temp.getHours();
int minute=temp.getMinutes();
int month=temp.getMonth()+1;
int year=temp.getYear()+1900;
This worked for me:
grep ".*${expr}" - with double-quotes, preceded by the dot. Where "expr" is whatever string you need in the end of the line.
Standard unix grep w/out additional switches.
There are several ways to do plots in R; lattice
is one of them, and always a reasonable solution, +1 to @agstudy. If you want to do this in base graphics, you could try the following:
Reasonstats <- read.table(text="Category Reason Species
Decline Genuine 24
Improved Genuine 16
Improved Misclassified 85
Decline Misclassified 41
Decline Taxonomic 2
Improved Taxonomic 7
Decline Unclear 41
Improved Unclear 117", header=T)
ReasonstatsDec <- Reasonstats[which(Reasonstats$Category=="Decline"),]
ReasonstatsImp <- Reasonstats[which(Reasonstats$Category=="Improved"),]
Reasonstats3 <- cbind(ReasonstatsImp[,3], ReasonstatsDec[,3])
colnames(Reasonstats3) <- c("Improved", "Decline")
rownames(Reasonstats3) <- ReasonstatsImp$Reason
windows()
barplot(t(Reasonstats3), beside=TRUE, ylab="number of species",
cex.names=0.8, las=2, ylim=c(0,120), col=c("darkblue","red"))
box(bty="l")
Here's what I did: I created a matrix with two columns (because your data were in columns) where the columns were the species counts for Decline
and for Improved
. Then I made those categories the column names. I also made the Reason
s the row names. The barplot()
function can operate over this matrix, but wants the data in rows rather than columns, so I fed it a transposed version of the matrix. Lastly, I deleted some of your arguments to your barplot()
function call that were no longer needed. In other words, the problem was that your data weren't set up the way barplot()
wants for your intended output.
>>> x = "a (b) c (d) e"
>>> re.search(r"\(.*\)", x).group()
'(b) c (d)'
>>> re.search(r"\(.*?\)", x).group()
'(b)'
The '
*
', '+
', and '?
' qualifiers are all greedy; they match as much text as possible. Sometimes this behavior isn’t desired; if the RE<.*>
is matched against '<H1>title</H1>
', it will match the entire string, and not just '<H1>
'. Adding '?
' after the qualifier makes it perform the match in non-greedy or minimal fashion; as few characters as possible will be matched. Using.*?
in the previous expression will match only '<H1>
'.
for %f in (filenamewildcard0, filenamewildcard1, ...) do echo %f >> newtargetfilename_with_path
Same idea as Mike T; might work better under MessyDog's 127 character command line limit
I just improve the groovy script from above to write the property in the root parent properties file:
import java.io.*;
String p = project.properties['env-properties-file']
File f = new File(p)
if (f.exists()) {
try{
FileWriter fstream = new FileWriter(f.getAbsolutePath())
BufferedWriter out = new BufferedWriter(fstream)
String propToSet = f.getAbsolutePath().substring(0, f.getAbsolutePath().lastIndexOf(File.separator))
if (File.separator != "/") {
propToSet = propToSet.replace(File.separator,File.separator+File.separator+File.separator)
}
out.write("jacoco.agent = " + propToSet + "/lib/jacocoagent.jar")
out.close()
}catch (Exception e){
}
}
String ret = "../"
while (!f.exists()) {
f = new File(ret + p)
ret+= "../"
}
project.properties['env-properties-file-by-groovy'] = f.getAbsolutePath()
Random number generation between 1000 and 9999 inclusive:
FLOOR(RAND(CHECKSUM(NEWID()))*(9999-1000+1)+1000)
"+1" - to include upper bound values(9999 for previous example)
> df2 <- data.frame(sapply(df1, function(x) as.numeric(as.character(x))))
> df2
a b
1 0.01 2
2 0.02 4
3 0.03 5
4 0.04 7
> sapply(df2, class)
a b
"numeric" "numeric"
Since there is no programmatic way to mimic minimal-ui
, we have come up with a different workaround, using calc()
and known iOS address bar height to our advantage:
The following demo page (also available on gist, more technical details there) will prompt user to scroll, which then triggers a soft-fullscreen (hide address bar/menu), where header and content fills the new viewport.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Scroll Test</title>
<style>
html, body {
height: 100%;
}
html {
background-color: red;
}
body {
background-color: blue;
margin: 0;
}
div.header {
width: 100%;
height: 40px;
background-color: green;
overflow: hidden;
}
div.content {
height: 100%;
height: calc(100% - 40px);
width: 100%;
background-color: purple;
overflow: hidden;
}
div.cover {
position: absolute;
top: 0;
left: 0;
z-index: 100;
width: 100%;
height: 100%;
overflow: hidden;
background-color: rgba(0, 0, 0, 0.5);
color: #fff;
display: none;
}
@media screen and (width: 320px) {
html {
height: calc(100% + 72px);
}
div.cover {
display: block;
}
}
</style>
<script>
var timeout;
window.addEventListener('scroll', function(ev) {
if (timeout) {
clearTimeout(timeout);
}
timeout = setTimeout(function() {
if (window.scrollY > 0) {
var cover = document.querySelector('div.cover');
cover.style.display = 'none';
}
}, 200);
});
</script>
</head>
<body>
<div class="header">
<p>header</p>
</div>
<div class="content">
<p>content</p>
</div>
<div class="cover">
<p>scroll to soft fullscreen</p>
</div>
</body>
</html>
Found it here: http://awesomesql.wordpress.com/2010/02/08/script-to-drop-all-connections-to-a-database/
DECLARE @dbname NVARCHAR(128)
SET @dbname = 'DB name here'
-- db to drop connections
DECLARE @processid INT
SELECT @processid = MIN(spid)
FROM master.dbo.sysprocesses
WHERE dbid = DB_ID(@dbname)
WHILE @processid IS NOT NULL
BEGIN
EXEC ('KILL ' + @processid)
SELECT @processid = MIN(spid)
FROM master.dbo.sysprocesses
WHERE dbid = DB_ID(@dbname)
END
Taking a guess at what it is you're asking for. I'm assuming by millisecond frame timer you're looking for something that acts like the following,
double mticks()
{
struct timeval tv;
gettimeofday(&tv, 0);
return (double) tv.tv_usec / 1000 + tv.tv_sec * 1000;
}
but uses std::chrono
instead,
double mticks()
{
typedef std::chrono::high_resolution_clock clock;
typedef std::chrono::duration<float, std::milli> duration;
static clock::time_point start = clock::now();
duration elapsed = clock::now() - start;
return elapsed.count();
}
Hope this helps.
Using Eclipse Collections you can create a List like this:
List<String> list1 = Lists.mutable.empty();
List<String> list2 = Lists.mutable.of("One", "Two", "Three");
If you want an immutable list:
ImmutableList<String> list3 = Lists.immutable.empty();
ImmutableList<String> list4 = Lists.immutable.of("One", "Two", "Three");
You can avoid auto-boxing by using primitive lists. Here's how you'd create int lists:
MutableIntList list5 = IntLists.mutable.empty();
MutableIntList list6 = IntLists.mutable.of(1, 2, 3);
ImmutableIntList list7 = IntLists.immutable.empty();
ImmutableIntList list8 = IntLists.immutable.of(1, 2, 3);
There are variants for all 8 primitives.
MutableLongList longList = LongLists.mutable.of(1L, 2L, 3L);
MutableCharList charList = CharLists.mutable.of('a', 'b', 'c');
MutableShortList shortList = ShortLists.mutable.of((short) 1, (short) 2, (short) 3);
MutableByteList byteList = ByteLists.mutable.of((byte) 1, (byte) 2, (byte) 3);
MutableBooleanList booleanList = BooleanLists.mutable.of(true, false);
MutableFloatList floatList = FloatLists.mutable.of(1.0f, 2.0f, 3.0f);
MutableDoubleList doubleList = DoubleLists.mutable.of(1.0, 2.0, 3.0);
Note: I am a committer for Eclipse Collections.
A simple solution is
UUID.randomUUID().toString().replace("-", "")
(Like the existing solutions, only that it avoids the String#replaceAll call. Regular expression replacement is not required here, so String#replace feels more natural, though technically it still is implemented with regular expressions. Given that the generation of the UUID is more costly than the replacement, there should not be a significant difference in runtime.)
Using the UUID class is probably fast enough for most scenarios, though I would expect that some specialized hand-written variant, which does not need the postprocessing, to be faster. Anyway, the bottleneck of the overall computation will normally be the random number generator. In case of the UUID class, it uses SecureRandom.
Which random number generator to use is also a trade-off that depends on the application. If it is security-sensitive, SecureRandom is, in general, the recommendation. Otherwise, ThreadLocalRandom is an alternative (faster than SecureRandom or the old Random, but not cryptographically secure).
add a
as follows:
<a href="http://foo.com" onclick="return false;">....</a>
or return false;
from click handler for #clickable
like:
$("#clickable").click(function() {
var url = $("#clickable a").attr("href");
window.location = url;
return false;
});
Here is kotlin version
override fun onResume() {
super.onResume()
val params:ViewGroup.LayoutParams = dialog.window.attributes
params.width = LinearLayout.LayoutParams.MATCH_PARENT
params.height = LinearLayout.LayoutParams.MATCH_PARENT
dialog.window.attributes = params as android.view.WindowManager.LayoutParams
}
#Script for calculating various values in MB
echo "Please enter some input: "
read input_variable
echo $input_variable | awk '{ foo = $1 / 1024 / 1024 ; print foo "MB" }'
also you need install nodejs:
curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs
You need to use an iframe
.
<html>
<head>
<script type="text/javascript">
$(document).ready(function(){
$("#content").attr("src","http://vnexpress.net");
})
</script>
</head>
<body>
<iframe id="content" src="about:blank"></iframe>
</body>
</html
The easiest way to do this is to click on the Terminate button(red square) in the console:
I wanted a more concise answer and I came up with the following using the documentation at aggregates and group
db.countries.aggregate([{"$group": {"_id": "$country", "count":{"$sum": 1}}])
It is always C:\Windows\System32\WindowsPowershell\v1.0. It was left like that for backward compability is what I heard or read somewhere.
don't know as of which chrome version this is available, but i found a setting 'Console - Log XMLHttpRequests' (clicking on the icon in the bottom right corner of developer tools in chrome on mac)
Your question is hard to understand, but if I'm getting the gist, you simply have some value in your main view that you want to access in a partial being rendered in that view.
If you just render a partial with just the partial name:
@Html.Partial("_SomePartial")
It will actually pass your model as an implicit parameter, the same as if you were to call:
@Html.Partial("_SomePartial", Model)
Now, in order for your partial to actually be able to use this, though, it too needs to have a defined model, for example:
@model Namespace.To.Your.Model
@Html.Action("MemberProfile", "Member", new { id = Model.Id })
Alternatively, if you're dealing with a value that's not on your view's model (it's in the ViewBag or a value generated in the view itself somehow, then you can pass a ViewDataDictionary
@Html.Partial("_SomePartial", new ViewDataDictionary { { "id", someInteger } });
And then:
@Html.Action("MemberProfile", "Member", new { id = ViewData["id"] })
As with the model, Razor will implicitly pass your partial the view's ViewData
by default, so if you had ViewBag.Id
in your view, then you can reference the same thing in your partial.
I know maybe it is unnecessary, but I made a function which converts float to string:
#include <stdio.h>
/** Number on countu **/
int n_tu(int number, int count)
{
int result = 1;
while(count-- > 0)
result *= number;
return result;
}
/*** Convert float to string ***/
void float_to_string(float f, char r[])
{
long long int length, length2, i, number, position, sign;
float number2;
sign = -1; // -1 == positive number
if (f < 0)
{
sign = '-';
f *= -1;
}
number2 = f;
number = f;
length = 0; // Size of decimal part
length2 = 0; // Size of tenth
/* Calculate length2 tenth part */
while( (number2 - (float)number) != 0.0 && !((number2 - (float)number) < 0.0) )
{
number2 = f * (n_tu(10.0, length2 + 1));
number = number2;
length2++;
}
/* Calculate length decimal part */
for (length = (f > 1) ? 0 : 1; f > 1; length++)
f /= 10;
position = length;
length = length + 1 + length2;
number = number2;
if (sign == '-')
{
length++;
position++;
}
for (i = length; i >= 0 ; i--)
{
if (i == (length))
r[i] = '\0';
else if(i == (position))
r[i] = '.';
else if(sign == '-' && i == 0)
r[i] = '-';
else
{
r[i] = (number % 10) + '0';
number /=10;
}
}
}
See this. Your code would be something like the following:
from django.db.models import Max
# Generates a "SELECT MAX..." query
Argument.objects.aggregate(Max('rating')) # {'rating__max': 5}
You can also use this on existing querysets:
from django.db.models import Max
args = Argument.objects.filter(name='foo') # or whatever arbitrary queryset
args.aggregate(Max('rating')) # {'rating__max': 5}
If you need the model instance that contains this max value, then the code you posted is probably the best way to do it:
arg = args.order_by('-rating')[0]
Note that this will error if the queryset is empty, i.e. if no arguments match the query (because the [0]
part will raise an IndexError
). If you want to avoid that behavior and instead simply return None
in that case, use .first()
:
arg = args.order_by('-rating').first() # may return None
As mentioned, sealed
is an equivalent of final
for methods and classes.
As for the rest, it is complicated.
For static final
fields, static readonly
is the closest thing possible. It allows you to initialize the static field in a static constructor, which is fairly similar to static initializer in Java. This applies both to constants (primitives and immutable objects) and constant references to mutable objects.
The const
modifier is fairly similar for constants, but you can't set them in a static constructor.
On a field that shouldn't be reassigned once it leaves the constructor, readonly
can be used. It is not equal though - final
requires exactly one assignment even in constructor or initializer.
There is no C# equivalent for a final
local variable that I know of. If you are wondering why would anyone need it: You can declare a variable prior to an if-else, switch-case or so. By declaring it final, you enforce that it is assigned at most once.
Java local variables in general are required to be assigned at least once before they are read. Unless the branch jumps out before value read, a final variable is assigned exactly once. All of this is checked compile-time. This requires well behaved code with less margin for an error.
Summed up, C# has no direct equivalent of final
. While Java lacks some nice features of C#, it is refreshing for me as mostly a Java programmer to see where C# fails to deliver an equivalent.
select top(3) min(Name),TotalSalary,ROW_NUMBER() OVER (Order by TotalSalary desc) AS RowNumber FROM tbl_EmployeeProfile group by TotalSalary
React TypeScript with Hooks
From a Class
this.history.push({
pathname: "/unauthorized",
state: { message: "Hello" },
});
UnAuthorized Functional Component
interface IState {
message?: string;
}
export default function UnAuthorized() {
const location = useLocation();
const message = (location.state as IState).message;
return (
<div className="jumbotron">
<h6>{message}</h6>
</div>
);
}
the position:fixed; property should do the work, I used it on my Website and it worked fine. http://www.w3schools.com/css/css_positioning.asp
The java.sql.Timestamp class has no format. Its toString method generates a String with a format.
Do not conflate a date-time object with a String that may represent its value. A date-time object can parse strings and generate strings but is not itself a string.
First convert from the troubled old legacy date-time classes to java.time classes. Use the new methods added to the old classes.
Instant instant = mySqlDate.toInstant() ;
Lose the fraction of a second you don't want.
instant = instant.truncatedTo( ChronoUnit.Seconds );
Assign the time zone to adjust from UTC used by Instant.
ZoneId z = ZoneId.of( "America/Montreal" ) ;
ZonedDateTime zdt = instant.atZone( z );
Generate a String close to your desired output. Replace its T
in the middle with a SPACE.
DateTimeFormatter f = DateTimeFormatter.ISO_LOCAL_DATE_TIME ;
String output = zdt.format( f ).replace( "T" , " " );
Since there can be multiple columns with same name , we should first rename the columns. Here is code for the solution.
df.columns=list(range(0,len(df.columns)))
df.drop(columns=[1,2])#drop second and third columns
This can be achieved via a hack, Navigate to some sample component and then navigate to the component that you want to reload.
this.router.navigateByUrl('/SampleComponent', { skipLocationChange: true });
this.router.navigate(["yourLandingComponent"]);
What could be the possible cause of this exception?
You may not have appropriate Jar in your class path.
How it could be removed?
By putting HTTPClient jar in your class path. If it's a webapp, copy Jar into WEB-INF/lib
if it's standalone, make sure you have this jar in class path or explicitly set using -cp
option
as the doc says,
Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.
The searched-for class definition existed when the currently executing class was compiled, but the definition can no longer be found.
Edit:
If you are using a dependency management like Maven/Gradle (see the answer below) or SBT please use it to bring the httpclient jar for you.
Please, Check this out, I hope it's help
<div class="row">
<iframe class="col-lg-12 col-md-12 col-sm-12" src="http://www.w3schools.com">
</iframe>
</div>
delete p from
product p
inner join (
select max(id) as id, url from product
group by url
having count(*) > 1
) unik on unik.url = p.url and unik.id != p.id;
This works perfectly for me
a img {border:none;}
The easiest way is to populate your bean would be from a Reader object, this can be done in a single call:
BufferedReader reader = request.getReader();
Gson gson = new Gson();
MyBean myBean = gson.fromJson(reader, MyBean.class);
Right click on eclipse project go to build path and then configure build path you will see jre and maven will be unchecked check both of them and your error will be solved
For these cases it would be better to use Apache Commons StringUtils#equals, it already handles null strings. Code sample:
public boolean compare(String s1, String s2) {
return StringUtils.equals(s1, s2);
}
If you dont want to add the library, just copy the source code of the StringUtils#equals
method and apply it when you need it.
We had a situation where IE forced us to post as text/plain, so we had to manually parse the parameters using getReader. The servlet was being used for long polling, so when AsyncContext::dispatch was executed after a delay, it was literally reposting the request empty handed.
So I just stored the post in the request when it first appeared by using HttpServletRequest::setAttribute. The getReader method empties the buffer, where getParameter empties the buffer too but stores the parameters automagically.
String input = null;
// we have to store the string, which can only be read one time, because when the
// servlet awakens an AsyncContext, it reposts the request and returns here empty handed
if ((input = (String) request.getAttribute("com.xp.input")) == null) {
StringBuilder buffer = new StringBuilder();
BufferedReader reader = request.getReader();
String line;
while((line = reader.readLine()) != null){
buffer.append(line);
}
// reqBytes = buffer.toString().getBytes();
input = buffer.toString();
request.setAttribute("com.xp.input", input);
}
if (input == null) {
response.setContentType("text/plain");
PrintWriter out = response.getWriter();
out.print("{\"act\":\"fail\",\"msg\":\"invalid\"}");
}
You may also find the following approach cleaner than including every method:
class Thing
delegate :url_helpers, to: 'Rails.application.routes'
def url
url_helpers.thing_path(self)
end
end
I noticed this wasn't working with a static-first-then-reverse-proxy setup. Here's what that looks like:
location @app {
proxy_pass http://localhost:3000$request_uri;
}
location / {
try_files $uri $uri/ @app;
error_page 405 @app;
}
Since SELECT INTO assumes that a single row will be returned, you can use a statement of the form:
SELECT MAX(column)
INTO var
FROM table
WHERE conditions;
IF var IS NOT NULL
THEN ...
The SELECT will give you the value if one is available, and a value of NULL instead of a NO_DATA_FOUND exception. The overhead introduced by MAX() will be minimal-to-zero since the result set contains a single row. It also has the advantage of being compact relative to a cursor-based solution, and not being vulnerable to concurrency issues like the two-step solution in the original post.
"foobar".gsub(/(o+)/){|s|s+'ball'}
#=> "fooballbar"
If you a running Jupyter/Ipython notebook and having problems using;
ax = df1.plot()
df2.plot(ax=ax)
Run the command inside of the same cell!! It wont, for some reason, work when they are separated into sequential cells. For me at least.
I finally managed to get it working. Here the code :
private void dgvStatus_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (e.ColumnIndex != color.Index)
return;
e.CellStyle.BackColor = Color.FromArgb(int.Parse(((DataRowView)dgvStatus.Rows[e.RowIndex].DataBoundItem).Row[4].ToString()));
}
if anyone know a better to do this please don't hesitate to post it. I'm open to suggestion
Let me add my vote for boost::lexical_cast
#include <boost/lexical_cast.hpp>
int val = boost::lexical_cast<int>(strval) ;
It throws bad_lexical_cast
on error.
does R stop no matter the N value you use? try to use small values and see if it's the mvrnorm function that is the issue or you could simply loop it on subsets. Insert the gc()
function in the loop to free some RAM continuously
.service-small option {
font-size: 14px;
padding: 5px;
background: #5c5c5c;
}
I think it because you used .styled-select in start of the class code.
UPDATE table1 SET col_a = 'newvalue'
Add a WHERE
condition if you want to only update some of the rows.
Using width/height on inline elements is not always a good idea.
You can use display: inline-block
instead
You are almost there. (note change in the return value of FindWindow declaration). I'd recommend using RegisterWindowMessage in this case so you don't have to worry about the ins and outs of WM_USER.
[DllImport("user32.dll")]
public static extern IntPtr FindWindow(string lpClassName, String lpWindowName);
[DllImport("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int wMsg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", SetLastError=true, CharSet=CharSet.Auto)]
static extern uint RegisterWindowMessage(string lpString);
public void button1_Click(object sender, EventArgs e)
{
// this would likely go in a constructor because you only need to call it
// once per process to get the id - multiple calls in the same instance
// of a windows session return the same value for a given string
uint id = RegisterWindowMessage("MyUniqueMessageIdentifier");
IntPtr WindowToFind = FindWindow(null, "Form1");
Debug.Assert(WindowToFind != IntPtr.Zero);
SendMessage(WindowToFind, id, IntPtr.Zero, IntPtr.Zero);
}
And then in your Form1 class:
class Form1 : Form
{
[DllImport("user32.dll", SetLastError=true, CharSet=CharSet.Auto)]
static extern uint RegisterWindowMessage(string lpString);
private uint _messageId = RegisterWindowMessage("MyUniqueMessageIdentifier");
protected override void WndProc(ref Message m)
{
if (m.Msg == _messageId)
{
// do stuff
}
base.WndProc(ref m);
}
}
Bear in mind I haven't compiled any of the above so some tweaking may be necessary.
Also bear in mind that other answers warning you away from SendMessage
are spot on. It's not the preferred way of inter module communication nowadays and genrally speaking overriding the WndProc
and using SendMessage/PostMessage
implies a good understanding of how the Win32 message infrastructure works.
But if you want/need to go this route I think the above will get you going in the right direction.
You have to use the numeric sort option:
sort -n -k 1,1 File.txt
printStackTrace()
helps the programmer to understand where the actual problem occurred. printStacktrace()
is a method of the class Throwable
of java.lang
package. It prints several lines in the output console.
The first line consists of several strings. It contains the name of the Throwable sub-class & the package information.
From second line onwards, it describes the error position/line number beginning with at
.
The last line always describes the destination affected by the error/exception. The second last line informs us about the next line in the stack where the control goes after getting transfer from the line number described in the last line. The errors/exceptions represents the output in the form a stack, which were fed into the stack by fillInStackTrace()
method of Throwable
class, which itself fills in the program control transfer details into the execution stack. The lines starting with at
, are nothing but the values of the execution stack.
In this way the programmer can understand where in code the actual problem is.
Along with the printStackTrace()
method, it's a good idea to use e.getmessage()
.
UTF-16 and UTF-8 are both encodings of Unicode. They are both Unicode; one is not more Unicode than the other.
Don't let an unfortunate historical artifact from Microsoft confuse you.
It's quite simple...
if ($('.mydivclass').length > 0) {
//do something
}
markable.in is a very nice online tool for editing Markdown syntax
From Bjarne Stroustrup's C++11 FAQ:
The
enum class
es ("new enums", "strong enums") address three problems with traditional C++ enumerations:
- conventional enums implicitly convert to int, causing errors when someone does not want an enumeration to act as an integer.
- conventional enums export their enumerators to the surrounding scope, causing name clashes.
- the underlying type of an
enum
cannot be specified, causing confusion, compatibility problems, and makes forward declaration impossible.The new enums are "enum class" because they combine aspects of traditional enumerations (names values) with aspects of classes (scoped members and absence of conversions).
So, as mentioned by other users, the "strong enums" would make the code safer.
The underlying type of a "classic" enum
shall be an integer type large enough to fit all the values of the enum
; this is usually an int
. Also each enumerated type shall be compatible with char
or a signed/unsigned integer type.
This is a wide description of what an enum
underlying type must be, so each compiler will take decisions on his own about the underlying type of the classic enum
and sometimes the result could be surprising.
For example, I've seen code like this a bunch of times:
enum E_MY_FAVOURITE_FRUITS
{
E_APPLE = 0x01,
E_WATERMELON = 0x02,
E_COCONUT = 0x04,
E_STRAWBERRY = 0x08,
E_CHERRY = 0x10,
E_PINEAPPLE = 0x20,
E_BANANA = 0x40,
E_MANGO = 0x80,
E_MY_FAVOURITE_FRUITS_FORCE8 = 0xFF // 'Force' 8bits, how can you tell?
};
In the code above, some naive coder is thinking that the compiler will store the E_MY_FAVOURITE_FRUITS
values into an unsigned 8bit type... but there's no warranty about it: the compiler may choose unsigned char
or int
or short
, any of those types are large enough to fit all the values seen in the enum
. Adding the field E_MY_FAVOURITE_FRUITS_FORCE8
is a burden and doesn't forces the compiler to make any kind of choice about the underlying type of the enum
.
If there's some piece of code that rely on the type size and/or assumes that E_MY_FAVOURITE_FRUITS
would be of some width (e.g: serialization routines) this code could behave in some weird ways depending on the compiler thoughts.
And to make matters worse, if some workmate adds carelessly a new value to our enum
:
E_DEVIL_FRUIT = 0x100, // New fruit, with value greater than 8bits
The compiler doesn't complain about it! It just resizes the type to fit all the values of the enum
(assuming that the compiler were using the smallest type possible, which is an assumption that we cannot do). This simple and careless addition to the enum
could subtlety break related code.
Since C++11 is possible to specify the underlying type for enum
and enum class
(thanks rdb) so this issue is neatly addressed:
enum class E_MY_FAVOURITE_FRUITS : unsigned char
{
E_APPLE = 0x01,
E_WATERMELON = 0x02,
E_COCONUT = 0x04,
E_STRAWBERRY = 0x08,
E_CHERRY = 0x10,
E_PINEAPPLE = 0x20,
E_BANANA = 0x40,
E_MANGO = 0x80,
E_DEVIL_FRUIT = 0x100, // Warning!: constant value truncated
};
Specifying the underlying type if a field have an expression out of the range of this type the compiler will complain instead of changing the underlying type.
I think that this is a good safety improvement.
So Why is enum class preferred over plain enum?, if we can choose the underlying type for scoped(enum class
) and unscoped (enum
) enums what else makes enum class
a better choice?:
int
.I've used Francesco Balena's HashTable class several times in the past when a Collection or Dictionary wasn't a perfect fit and i just needed a HashTable.