extend = function(destination, source) {   
          for (var property in source) {
            destination[property] = source[property];
          }
          return destination;
    };

Extending JavaScript

You could also add filters into the for loop.

Extends : This is used to get attributes of a parent class into base class and may contain already defined methods that can be overridden in the child class.

Implements : This is used to implement an interface (parent class with functions signatures only but not their definitions) by defining it in the child class.

There is one special condition: "What if I want a new Interface to be the child of an existing interface?". In the above condition, the child interface extends the parent interface.

I just solved my "multiple inheritance" problem with:

class Session {
    public $username;
}

class MyServiceResponsetype {
    protected $only_avaliable_in_response;
}

class SessionResponse extends MyServiceResponsetype {
    /** has shared $only_avaliable_in_response */

    public $session;

    public function __construct(Session $session) {
      $this->session = $session;
    }

}

This way I have the power to manipulate session inside a SessionResponse which extends MyServiceResponsetype still being able to handle Session by itself.

People who are still struggling for the simple and best approach, you can use Spread Syntax for extending object.

var person1 = {_x000D_
      name: "Blank",_x000D_
      age: 22_x000D_
    };_x000D_
_x000D_
var person2 = {_x000D_
      name: "Robo",_x000D_
      age: 4,_x000D_
      height: '6 feet'_x000D_
    };_x000D_
// spread syntax_x000D_
let newObj = { ...person1, ...person2 };_x000D_
console.log(newObj.height);

Note: Remember that, the property is farthest to the right will have the priority. In this example, person2 is at right side, so newObj will have name Robo in it.

If you don't like using multi-inheritance, use extends and implements together to stay safe.

class C extends B implements A {
  // implements A here
}

Yes, you can do it. An interface can extend multiple interfaces, as shown here:

interface Maininterface extends inter1, inter2, inter3 {  
  // methods
}

A single class can also implement multiple interfaces. What if two interfaces have a method defining the same name and signature?

There is a tricky point:

interface A {
    void test();
}

interface B {
    void test();
}

class C implements A, B {

    @Override
    public void test() {

    }     

}

Then single implementation works for both :).

Read my complete post here:

http://codeinventions.blogspot.com/2014/07/can-interface-extend-multiple.html

ad 1. It does not implement its methods.

ad 4. The purpose of one interface extending, not implementing another, is to build a more specific interface. For example, SortedMap is an interface that extends Map. A client not interested in the sorting aspect can code against Map and handle all the instances of for example TreeMap, which implements SortedMap. At the same time, another client interested in the sorted aspect can use those same instances through the SortedMap interface.

In your example you are repeating the methods from the superinterface. While legal, it's unnecessary and doesn't change anything in the end result. The compiled code will be exactly the same whether these methods are there or not. Whatever Eclipse's hover says is irrelevant to the basic truth that an interface does not implement anything.

By default Rails 4 will not serve your assets. To enable this functionality you need to go into config/application.rb and add this line:

config.serve_static_assets = true

https://devcenter.heroku.com/articles/rails-4-asset-pipeline#serve-assets

Additional Points from above answers

Let’s say we got a module which is shared in multiple apps and it contains a few services. Not all are needed for each app.

If use @Component on those service classes and the component scan in the application,

we might end up detecting more beans than necessary

In this case, you either had to adjust the filtering of the component scan or provide the configuration that even the unused beans can run. Otherwise, the application context won’t start.

In this case, it is better to work with @Bean annotation and only instantiate those beans,

which are required individually in each app

So, essentially, use @Bean for adding third-party classes to the context. And @Component if it is just inside your single application.

Sometimes clear will not work. Use float: none as an override

try this

 final Spinner cardStatusSpinner1 = (Spinner) findViewById(R.id.text_interested);
    String cardStatusString;
    cardStatusSpinner1.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent,
                View view, int pos, long id) {
            cardStatusString = parent.getItemAtPosition(pos).toString();
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }
    });

 final Button saveBtn = (Button) findViewById(R.id.save_button);
    saveBtn .setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub

            System.out.println("Selected cardStatusString : " + cardStatusString ); //this will print the result
        }
    });

pyenv is a 3rd party version manager which is super commonly used (18k stars, 1.6k forks) and exactly what I looked for when I came to this question.

Install pyenv.

Usage

$ pyenv install --list
Available versions:
  2.1.3
  [...]
  3.8.1
  3.9-dev
  activepython-2.7.14
  activepython-3.5.4
  activepython-3.6.0
  anaconda-1.4.0
  [... a lot more; including anaconda, miniconda, activepython, ironpython, pypy, stackless, ....]

$ pyenv install 3.8.1
Downloading Python-3.8.1.tar.xz...
-> https://www.python.org/ftp/python/3.8.1/Python-3.8.1.tar.xz
Installing Python-3.8.1...
Installed Python-3.8.1 to /home/moose/.pyenv/versions/3.8.1

$ pyenv versions
* system (set by /home/moose/.pyenv/version)
  2.7.16
  3.5.7
  3.6.9
  3.7.4
  3.8-dev

$ python --version
Python 2.7.17
$ pip --version
pip 19.3.1 from /home/moose/.local/lib/python3.6/site-packages/pip (python 3.6)

$ mkdir pyenv-experiment && echo "3.8.1" > "pyenv-experiment/.python-version"
$ cd pyenv-experiment

$ python --version
Python 3.8.1
$ pip --version
pip 19.2.3 from /home/moose/.pyenv/versions/3.8.1/lib/python3.8/site-packages/pip (python 3.8)

check if a user exists or not. If not insert

$exist = DB::table('User')->where(['username'=>$username,'password'=>$password])->get();
if(count($exist)  >0) {
    echo "User already exist";;
}
else  {
    $data=array('username'=>$username,'password'=>$password);
    DB::table('User')->insert($data);
}
Laravel 5.4           

Had the same problem. I was passing a non-const reference of custom class and the constructor complained (some tuple template errors). Replaced the reference with pointer and it worked.

I find this easier

1. Go VISUAL mode Shift+v
2. Select lines
3. d to delete

https://superuser.com/questions/170795/how-can-i-select-and-delete-lines-of-text-in-vi

Since I don't find a simple answer just adding more this will be JSP page. save this content to a jsp file once you run you can see the values of the selected displayed.

Update: save the file as test.jsp and run it on any web/app server

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<%@ page import="java.lang.*" %>
<%@ page import="java.io.*" %>
<% String[] a = request.getParameterValues("multiple");
if(a!=null)
{
for(int i=0;i<a.length;i++){
//out.println(Integer.parseInt(a[i])); //If integer
out.println(a[i]);
}}
%>
<html>
<body>
<form action="test.jsp" method="get">
<select name="multiple" multiple="multiple"><option value="1">1</option><option value="2">2</option><option value="3">3</option></select>
<input type="submit">
</form>
</body>
</html>

Give your img tag an id, then you can

document.getElementById("imageid").src="../template/save.png";

The easiest way is, for example:

reboot = `init 6`
puts reboot

inline and inline-block elements are affected by whitespace in the HTML.

The simplest way to fix your problem is to remove the whitespace between </div> and <div id="col2">, see: http://jsfiddle.net/XCDsu/15/

There are other possible solutions, see: bikeshedding CSS3 property alternative?

You could create a simple AutoIt Script that does the job for you, compile it as an executable and perform a system call there.

in au3 Script:

; how to use: MouseClick ( "button" [, x, y [, clicks = 1 [, speed = 10]]] )
MouseClick ( "left" , $CmdLine[1], $CmdLine[1] )

Now find aut2exe in your au3 Folder or find 'Compile Script to .exe' in your Start Menu and create an executable.

in your Java class call:

Runtime.getRuntime().exec(
    new String[]{
        "yourscript.exe", 
        String.valueOf(mypoint.x),
        String.valueOf(mypoint.y)}
);

AutoIt will behave as if it was a human and won't be detected as a machine.

Find AutoIt here: https://www.autoitscript.com/

You can use string1.localeCompare(string2) for string comparison

this.myArray.sort((a,b) => { 
    return a.stringProp.localeCompare(b.stringProp);
});

Note that localCompare is case insensitive

For text files, you can use:

import requests

url = 'https://WEBSITE.com'
req = requests.get(url)
path = "C:\\YOUR\\FILE.html"

with open(path, 'wb') as f:
    f.write(req.content)

Comparison between different approaches in swift 3.0

1. Sleep

This method does not have a call back. Put codes directly after this line to be executed in 4 seconds. It will stop user from iterating with UI elements like the test button until the time is gone. Although the button is kind of frozen when sleep kicks in, other elements like activity indicator is still spinning without freezing. You cannot trigger this action again during the sleep.

sleep(4)
print("done")//Do stuff here

2. Dispatch, Perform and Timer

These three methods work similarly, they are all running on the background thread with call backs, just with different syntax and slightly different features.

Dispatch is commonly used to run something on the background thread. It has the callback as part of the function call

DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(4), execute: {
    print("done")
})

Perform is actually a simplified timer. It sets up a timer with the delay, and then trigger the function by selector.

perform(#selector(callback), with: nil, afterDelay: 4.0)

func callback() {
    print("done")
}}

And finally, timer also provides ability to repeat the callback, which is not useful in this case

Timer.scheduledTimer(timeInterval: 4, target: self, selector: #selector(callback), userInfo: nil, repeats: false)


func callback() {
    print("done")
}}

For all these three method, when you click on the button to trigger them, UI will not freeze and you are allowed to click on it again. If you click on the button again, another timer is set up and the callback will be triggered twice.

In conclusion

None of the four method works good enough just by themselves. sleep will disable user interaction, so the screen "freezes"(not actually) and results bad user experience. The other three methods will not freeze the screen, but you can trigger them multiple times, and most of the times, you want to wait until you get the call back before allowing user to make the call again.

So a better design will be using one of the three async methods with screen blocking. When user click on the button, cover the entire screen with some translucent view with a spinning activity indicator on top, telling user that the button click is being handled. Then remove the view and indicator in the call back function, telling user that the the action is properly handled, etc.

Simply - code will run fine if many threads are executing this code at the same time.

Install pylint-django using pip as follows

pip install pylint-django

Then in Visual Studio Code goto: User Settings (Ctrl + , or File > Preferences > Settings if available ) Put in the following (please note the curly braces which are required for custom user settings in VSC):

{"python.linting.pylintArgs": [
     "--load-plugins=pylint_django"
],}

It don't create normally; you need to add it by yourself.

After adding Global.asax by

• Right clicking your website -> Add New Item -> Global Application Class -> Add

You need to add a class

• Right clicking App_Code -> Add New Item -> Class -> name it Global.cs -> Add

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
}

just add this to your aplication tag in AndroidManifest.xml file

<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

and also edit the uses-sdk tag from android:targetSdkVersion="16" to 17

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

Use jQuery:

$("li").find("p").html()

should work.

It very much depend on the program you're using. Different programs (Emacs, vi, sed, and Perl) use slightly different regular expressions. In this case, I'd say that in the first pattern, the last "+" should be removed.

Updated 2021

Bootstrap 5

Custom file input no longer exists so to change Choose file... you'd need to use JS or some CSS like this.

Bootstrap 4.4

Displaying the selected filename can also be done with plain JavaScript. Here's an example that assumes the standard custom-file-input with label that is the next sibling element to the input...

document.querySelector('.custom-file-input').addEventListener('change',function(e){
  var fileName = document.getElementById("myInput").files[0].name;
  var nextSibling = e.target.nextElementSibling
  nextSibling.innerText = fileName
})

https://codeply.com/p/LtpNZllird

Bootstrap 4.1+

Now in Bootstrap 4.1 the "Choose file..." placeholder text is set in the custom-file-label:

<div class="custom-file" id="customFile" lang="es">
        <input type="file" class="custom-file-input" id="exampleInputFile" aria-describedby="fileHelp">
        <label class="custom-file-label" for="exampleInputFile">
           Select file...
        </label>
</div>

Changing the "Browse" button text requires a little extra CSS or SASS. Also notice how language translation works using the lang="" attribute.

.custom-file-input ~ .custom-file-label::after {
    content: "Button Text";
}

https://codeply.com/go/gnVCj66Efp (CSS)
https://codeply.com/go/2Mo9OrokBQ (SASS)

Another Bootstrap 4.1 Option

Alternatively you can use this custom file input plugin

https://www.codeply.com/go/uGJOpHUd8L/file-input

Bootstrap 4 Alpha 6 (Original Answer)

I think there are 2 separate issues here..

<label class="custom-file" id="customFile">
        <input type="file" class="custom-file-input">
        <span class="custom-file-control form-control-file"></span>
</label>

1 - How the change the initial placeholder and button text

In Bootstrap 4, the initial placeholder value is set on the custom-file-control with a CSS pseudo ::after element based on the HTML language. The initial file button (which isn't really a button but looks like one) is set with a CSS pseudo ::before element. These values can be overridden with CSS..

#customFile .custom-file-control:lang(en)::after {
  content: "Select file...";
}

#customFile .custom-file-control:lang(en)::before {
  content: "Click me";
}

2 - How to get the selected filename value, and update the input to show the value.

Once a file is selected, the value can be obtained using JavaScript/jQuery.

$('.custom-file-input').on('change',function(){
    var fileName = $(this).val();
})

However, since the placeholder text for the input is a pseudo element, there's no easy way to manipulate this with Js/jQuery. You can however, have a another CSS class that hides the pseudo content once the file is selected...

.custom-file-control.selected:lang(en)::after {
  content: "" !important;
}

Use jQuery to toggle the .selected class on the .custom-file-control once the file is selected. This will hide the initial placeholder value. Then put the filename value in the .form-control-file span...

$('.custom-file-input').on('change',function(){
  var fileName = $(this).val();
  $(this).next('.form-control-file').addClass("selected").html(fileName);
})

You can then handle the file upload or re-selection as needed.

Demo on Codeply (alpha 6)

Here is a good starting point.

HTML:

<div class="containing-table">
    <div class="centre-align">
        <div class="content"></div>
    </div>
</div>

CSS:

.containing-table {
    display: table;
    width: 100%;
    height: 400px; /* for demo only */
    border: 1px dotted blue;
}
.centre-align {
    padding: 10px;
    border: 1px dashed gray;
    display: table-cell;
    text-align: center;
    vertical-align: middle;
}
.content {
    width: 50px;
    height: 50px;
    background-color: red;
    display: inline-block;
    vertical-align: top; /* Removes the extra white space below the baseline */
}

See demo at: http://jsfiddle.net/audetwebdesign/jSVyY/

.containing-table establishes the width and height context for .centre-align (the table-cell).

You can apply text-align and vertical-align to alter .centre-align as needed.

Note that .content needs to use display: inline-block if it is to be centered horizontally using the text-align property.

BCP can dump your data to a file and in SQL Server Management Studio, right click on the table, and select "script table as" then "create to", then "file..." and it will produce a complete table script.

BCP info
https://web.archive.org/web/1/http://blogs.techrepublic%2ecom%2ecom/datacenter/?p=319
http://msdn.microsoft.com/en-us/library/aa174646%28SQL.80%29.aspx

try {
   // ...
} catch (...) {
   // ...
}

Note that the ... inside the catch is a real ellipsis, ie. three dots.

However, because C++ exceptions are not necessarily subclasses of a base Exception class, there isn't any way to actually see the exception variable that is thrown when using this construct.

If I use exit() in a code and run it in the shell, it shows a message asking whether I want to kill the program or not. It's really disturbing. See here

But sys.exit() is better in this case. It closes the program and doesn't create any dialogue box.

import random
random.shuffle(array)

You are running Python 2 code on Python 3. In Python 3, the module has been renamed to http.client.

You could try to run the 2to3 tool on your code, and try to have it translated automatically. References to httplib will automatically be rewritten to use http.client instead.

You can always look at how wide your font is and take the average character pixel size. Then just multiply that by the number of characters you want. It's a bit tacky but it works as a quick fix.

Go to the .sln file, right click, open with Notepad++ (or any editor; Notepad++ is the fastest), find the path, change it.

.myDiv {
  display: flex;
  align-items: center;
}

.myDiv:before {
  display: inline-block;
  content: url(./dog.svg);
  margin-right: 15px;
  width: 10px;
}

Collection is a base interface for most collection classes (it is the root interface of java collection framework) Collections is a utility class

Collections class is a utility class having static methods It implements Polymorphic algorithms which operate on collections.

I was having this same problem too, I while multiple canvas elements with position:absolute does the job, if you want to save the output into an image, that's not going to work.

So I went ahead and did a simple layering "system" to code as if each layer had its own code, but it all gets rendered into the same element.

https://github.com/federicojacobi/layeredCanvas

I intend to add extra capabilities, but for now it will do.

You can do multiple functions and call them in order to "fake" layers.

If you assign parent type to a subclass it means that you agree with to use the common features of the parent class.

It gives you the freedom to abstract from different subclass implementations. As a result limits you with the parent features.

However, this type of assignment is called upcasting.

Parent parent = new Child();  

The opposite is downcasting.

Child child = (Child)parent;

So, if you create instance of Child and downcast it to Parent you can use that type attribute name. If you create instance of Parent you can do the same as with previous case but you can't use salary because there's not such attribute in the Parent. Return to the previous case that can use salary but only if downcasting to Child.

There's more detail explanation

1. Select your range from cell A (or the whole columns by first selecting column A). Make sure that the 'lighter coloured' cell is A1 then go to conditional formatting, new rule:

   

2. Put the following formula and the choice of your formatting (notice that the 'lighter coloured' cell comes into play here, because it is being used in the formula):

   =$A1<>$B1
   

   

3. Then press OK and that should do it.

   

Just for the forgetting-to-dispose problem, try the solution described in this blog post. Here's the essence:

    public void Dispose ()
    {
        // Dispose logic here ...

        // It's a bad error if someone forgets to call Dispose,
        // so in Debug builds, we put a finalizer in to detect
        // the error. If Dispose is called, we suppress the
        // finalizer.
#if DEBUG
        GC.SuppressFinalize(this);
#endif
    }

#if DEBUG
    ~TimedLock()
    {
        // If this finalizer runs, someone somewhere failed to
        // call Dispose, which means we've failed to leave
        // a monitor!
        System.Diagnostics.Debug.Fail("Undisposed lock");
    }
#endif

If you use Robert Harder's Base64 utility, then you can do:

InputStream is = new Base64.InputStream(cph);

Or with sun's JRE, you can do:

InputStream is = new
com.sun.xml.internal.messaging.saaj.packaging.mime.util.BASE64DecoderStream(cph)

However don't rely on that class continuing to be a part of the JRE, or even continuing to do what it seems to do today. Sun say not to use it.

There are other Stack Overflow questions about Base64 decoding, such as this one.

in Swift 3.0 or Later

passwordTextField.isSecureTextEntry = true

Milox solution is better than the accepted one IMHO but I had some problems with this implementation when handling urls with querystring.

I made some changes to make it work properly with any urls and to avoid Reflection.

public static HttpContext FakeHttpContext(string url)
{
    var uri = new Uri(url);
    var httpRequest = new HttpRequest(string.Empty, uri.ToString(),
                                        uri.Query.TrimStart('?'));
    var stringWriter = new StringWriter();
    var httpResponse = new HttpResponse(stringWriter);
    var httpContext = new HttpContext(httpRequest, httpResponse);

    var sessionContainer = new HttpSessionStateContainer("id",
                                    new SessionStateItemCollection(),
                                    new HttpStaticObjectsCollection(),
                                    10, true, HttpCookieMode.AutoDetect,
                                    SessionStateMode.InProc, false);

    SessionStateUtility.AddHttpSessionStateToContext(
                                         httpContext, sessionContainer);

    return httpContext;
}

I had the same issue -- Finally tried the ? sigil instead of @, and it worked.

According to the docs:

Note. Prior versions of the provider used the '@' symbol to mark parameters in SQL. This is incompatible with MySQL user variables, so the provider now uses the '?' symbol to locate parameters in SQL. To support older code, you can set 'old syntax=yes' on your connection string. If you do this, please be aware that an exception will not be throw if you fail to define a parameter that you intended to use in your SQL.

Really? Why don't you just throw an exception if someone tries to use the so called old syntax? A few hours down the drain for a 20 line program...

MySQL::MySQLCommand

This can be a somewhat confusing way of defining the size but you are basically specifying the area of the marker. This means, to double the width (or height) of the marker you need to increase s by a factor of 4. [because A = WH => (2W)(2H)=4A]

There is a reason, however, that the size of markers is defined in this way. Because of the scaling of area as the square of width, doubling the width actually appears to increase the size by more than a factor 2 (in fact it increases it by a factor of 4). To see this consider the following two examples and the output they produce.

# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()

gives

Notice how the size increases very quickly. If instead we have

# doubling the area of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*2**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()

gives

Now the apparent size of the markers increases roughly linearly in an intuitive fashion.

As for the exact meaning of what a 'point' is, it is fairly arbitrary for plotting purposes, you can just scale all of your sizes by a constant until they look reasonable.

Hope this helps!

Edit: (In response to comment from @Emma)

It's probably confusing wording on my part. The question asked about doubling the width of a circle so in the first picture for each circle (as we move from left to right) it's width is double the previous one so for the area this is an exponential with base 4. Similarly the second example each circle has area double the last one which gives an exponential with base 2.

However it is the second example (where we are scaling area) that doubling area appears to make the circle twice as big to the eye. Thus if we want a circle to appear a factor of n bigger we would increase the area by a factor n not the radius so the apparent size scales linearly with the area.

Edit to visualize the comment by @TomaszGandor:

This is what it looks like for different functions of the marker size:

x = [0,2,4,6,8,10,12,14,16,18]
s_exp = [20*2**n for n in range(len(x))]
s_square = [20*n**2 for n in range(len(x))]
s_linear = [20*n for n in range(len(x))]
plt.scatter(x,[1]*len(x),s=s_exp, label='$s=2^n$', lw=1)
plt.scatter(x,[0]*len(x),s=s_square, label='$s=n^2$')
plt.scatter(x,[-1]*len(x),s=s_linear, label='$s=n$')
plt.ylim(-1.5,1.5)
plt.legend(loc='center left', bbox_to_anchor=(1.1, 0.5), labelspacing=3)
plt.show()

i use concantenate. works for me.

1. fill j2-j14 with '(appostrophe)
2. enter L2 with formula =concantenate(j2,k2)
3. copy L2 to L3-L14

I had a similar error but with different context when I uploaded a *.p file to Google Drive. I tried to use it later in a Google Colab session, and got this error:

    1 with open("/tmp/train.p", mode='rb') as training_data:
----> 2     train = pickle.load(training_data)
UnpicklingError: invalid load key, '<'.

I solved it by compressing the file, upload it and then unzip on the session. It looks like the pickle file is not saved correctly when you upload/download it so it gets corrupted.

Creating a static library

$$:~/static [32]> cat foo.c
#include<stdio.h>
void foo()
{
printf("\nhello world\n");
}
$$:~/static [33]> cat foo.h
#ifndef _H_FOO_H
#define _H_FOO_H

void foo();

#endif
$$:~/static [34]> cat foo2.c
#include<stdio.h>
void foo2()
{
printf("\nworld\n");
}
$$:~/static [35]> cat foo2.h
#ifndef _H_FOO2_H
#define _H_FOO2_H

void foo2();

#endif
$$:~/static [36]> cat hello.c
#include<foo.h>
#include<foo2.h>
void main()
{
foo();
foo2();
}
$$:~/static [37]> cat makefile
hello: hello.o libtest.a
        cc -o hello hello.o -L. -ltest
hello.o: hello.c
        cc -c hello.c -I`pwd`
libtest.a:foo.o foo2.o
        ar cr libtest.a foo.o foo2.o
foo.o:foo.c
        cc -c foo.c
foo2.o:foo.c
        cc -c foo2.c
clean:
        rm -f foo.o foo2.o libtest.a hello.o

$$:~/static [38]>

creating a dynamic library

$$:~/dynamic [44]> cat foo.c
#include<stdio.h>
void foo()
{
printf("\nhello world\n");
}
$$:~/dynamic [45]> cat foo.h
#ifndef _H_FOO_H
#define _H_FOO_H

void foo();

#endif
$$:~/dynamic [46]> cat foo2.c
#include<stdio.h>
void foo2()
{
printf("\nworld\n");
}
$$:~/dynamic [47]> cat foo2.h
#ifndef _H_FOO2_H
#define _H_FOO2_H

void foo2();

#endif
$$:~/dynamic [48]> cat hello.c
#include<foo.h>
#include<foo2.h>
void main()
{
foo();
foo2();
}
$$:~/dynamic [49]> cat makefile
hello:hello.o libtest.sl
        cc -o hello hello.o -L`pwd` -ltest
hello.o:
        cc -c -b hello.c -I`pwd`
libtest.sl:foo.o foo2.o
        cc -G -b -o libtest.sl foo.o foo2.o
foo.o:foo.c
        cc -c -b foo.c
foo2.o:foo.c
        cc -c -b foo2.c
clean:
        rm -f libtest.sl foo.o foo

2.o hello.o
$$:~/dynamic [50]>

For those who prefer a bit more practical learning, select the segue in dock, open the attribute inspector and switch between different kinds of segues (dropdown "Kind"). This will reveal options specific for each of them: for example you can see that "present modally" allows you to choose a transition type etc.

I think a short example of where you would use . and not $ would help clarify things.

double x = x * 2
triple x = x * 3
times6 = double . triple

:i times6
times6 :: Num c => c -> c

Note that times6 is a function that is created from function composition.

You just check NumberFormatException:-

 String value="123";
 try  
 {  
    int s=Integer.parseInt(any_int_val);
    // do something when integer values comes 
 }  
 catch(NumberFormatException nfe)  
 {  
          // do something when string values comes 
 }  

If you are using an array (and purely an array), the lookup of "contains" is O(N), because worst case, you must iterate the entire array. Now if the array is sorted you can use a binary search, which reduces the search time to log(N) with the overhead of the sort.

If this is something that is invoked repeatedly, place it in a function:

private boolean inArray(int[] array, int value)
{  
     for (int i = 0; i < array.length; i++)
     {
        if (array[i] == value) 
        {
            return true;
        }
     }
    return false;  
}  

Compare also the difference between {} and set() with a single word argument.

>>> a = set('aardvark')
>>> a
{'d', 'v', 'a', 'r', 'k'} 
>>> b = {'aardvark'}
>>> b
{'aardvark'}

but both a and b are sets of course.

finally done with

GROUP BY
DATEPART(YEAR, DT.[Date]),
DATEPART(MONTH, DT.[Date]),
DATEPART(DAY, DT.[Date]),
DATEPART(HOUR, DT.[Date]),
(DATEPART(MINUTE, DT.[Date]) / 10)

Others explained very well and just want to give with simple examples.

Single quotes can be used around text to prevent the shell from interpreting any special characters. Dollar signs, spaces, ampersands, asterisks and other special characters are all ignored when enclosed within single quotes.

$ echo 'All sorts of things are ignored in single quotes, like $ & * ; |.' 

It will give this:

All sorts of things are ignored in single quotes, like $ & * ; |.

The only thing that cannot be put within single quotes is a single quote.

Double quotes act similarly to single quotes, except double quotes still allow the shell to interpret dollar signs, back quotes and backslashes. It is already known that backslashes prevent a single special character from being interpreted. This can be useful within double quotes if a dollar sign needs to be used as text instead of for a variable. It also allows double quotes to be escaped so they are not interpreted as the end of a quoted string.

$ echo "Here's how we can use single ' and double \" quotes within double quotes"

It will give this:

Here's how we can use single ' and double " quotes within double quotes

It may also be noticed that the apostrophe, which would otherwise be interpreted as the beginning of a quoted string, is ignored within double quotes. Variables, however, are interpreted and substituted with their values within double quotes.

$ echo "The current Oracle SID is $ORACLE_SID"

It will give this:

The current Oracle SID is test

Back quotes are wholly unlike single or double quotes. Instead of being used to prevent the interpretation of special characters, back quotes actually force the execution of the commands they enclose. After the enclosed commands are executed, their output is substituted in place of the back quotes in the original line. This will be clearer with an example.

$ today=`date '+%A, %B %d, %Y'`
$ echo $today 

It will give this:

Monday, September 28, 2015 

The 'export' keyword is the way to separate out template implementation from template declaration. This was introduced in C++ standard without an existing implementation. In due course only a couple of compilers actually implemented it. Read in depth information at Inform IT article on export

Swift 4 and Above

add below code into you tableview's didselect row delegate method

tableView.beginUpdates()
tableView.setNeedsLayout()
tableView.endUpdates()

scrollTop (IIRC) is where in the document the top of the page is scrolled to. scrollTo scrolls the page so that the top of the page is where you specify.

What you need here is some Javascript manipulated styles. Say if you wanted the div off-screen and scroll in from the right you would set the left attribute of the div to the width of the page and then decrease it by a set amount every few seconds until it is where you want.

This should point you in the right direction.

Additional: I'm sorry, I thought you wanted a separate div to 'pop out' from somewhere (sort of like this site does sometimes), and not move the entire page to a section. Proper use of anchors would achieve that effect.

Yes, std::vector stores copies. How should vector know what the expected life-times of your objects are?

If you want to transfer or share ownership of the objects use pointers, possibly smart pointers like shared_ptr (found in Boost or TR1) to ease resource management.

You can do this:

var frm = $(document.myform);
var data = JSON.stringify(frm.serializeArray());

See JSON.

If you just have a static svg string you want to include, you can use dangerouslySetInnerHTML:

render: function() {
    return <span dangerouslySetInnerHTML={{__html: "<svg>...</svg>"}} />;
}

and React will include the markup directly without processing it at all.

In plain English: Get the parent element. Check it's height, and save that value. Then loop through all the child elements and check their individual heights.

This is dirty, but you might get the basic idea: http://jsfiddle.net/VgDgz/

just seperate the class name with a comma.

.a,.b{
your styles
}

basically 32bit architecture can address 4GB as you expected. There are some techniques which allows processor to address more data like AWE or PAE.

As an addition to the solution:

ul li:before {
 content: '?'; 
}

You can use any SVG icon as the content, such as the Font Aswesome.

ul {_x000D_
  list-style: none;_x000D_
  padding-left: 0;_x000D_
}_x000D_
li {_x000D_
  position: relative;_x000D_
  padding-left: 1.5em;  /* space to preserve indentation on wrap */_x000D_
}_x000D_
li:before {_x000D_
  content: '';  /* placeholder for the SVG */_x000D_
  position: absolute;_x000D_
  left: 0;  /* place the SVG at the start of the padding */_x000D_
  width: 1em;_x000D_
  height: 1em;_x000D_
  background: url("data:image/svg+xml;utf8,<?xml version='1.0' encoding='utf-8'?><svg width='18' height='18' viewBox='0 0 1792 1792' xmlns='http://www.w3.org/2000/svg'><path d='M1671 566q0 40-28 68l-724 724-136 136q-28 28-68 28t-68-28l-136-136-362-362q-28-28-28-68t28-68l136-136q28-28 68-28t68 28l294 295 656-657q28-28 68-28t68 28l136 136q28 28 28 68z'/></svg>") no-repeat;_x000D_
}

<ul>_x000D_
  <li>this is my text</li>_x000D_
  <li>this is my text</li>_x000D_
  <li>This is my text, it's pretty long so it needs to wrap. Note that wrapping preserves the indentation that bullets had!</li>_x000D_
  <li>this is my text</li>_x000D_
  <li>this is my text</li>_x000D_
</ul>

Note: To solve the wrapping problem that other answers had:

• we reserve 1.5m ems of space at the left of each <li>
• then position the SVG at the start of that space (position: absolute; left: 0)

Here are more Font Awesome black icons.

Check this CODEPEN to see how you can add colors and change their size.

Assuming you understand the consequences of using the MEMORY engine as mentioned in comments, and here, as well as some others you'll find by searching about (no transaction safety, locking issues, etc) - you can proceed as follows:

MEMORY tables are stored differently than InnoDB, so you'll need to use an export/import strategy. First dump each table separately to a file using SELECT * FROM tablename INTO OUTFILE 'table_filename'. Create the MEMORY database and recreate the tables you'll be using with this syntax: CREATE TABLE tablename (...) ENGINE = MEMORY;. You can then import your data using LOAD DATA INFILE 'table_filename' INTO TABLE tablename for each table.

When you do - left shift by 1 you multiply by 2 - right shift by 1 you divide by 2

 x = 5
 x >> 1
 x = 2 ( x=5/2)

 x = 5
 x << 1
 x = 10 (x=5*2)

It is working fine with me.

I have the following HTML:

<div>
    <select id="select1">
        <option value="1">test1</option>
        <option value="2" selected="selected">test2</option>
        <option value="3">test3</option>
    </select>
    <br/>
    <button onClick="GetSelectedItem('select1');">Get Selected Item</button>
</div>

And the following JavaScript:

function GetSelectedItem(el)
{
    var e = document.getElementById(el);
    var strSel = "The Value is: " + e.options[e.selectedIndex].value + " and text is: " + e.options[e.selectedIndex].text;
    alert(strSel);
}

See that you are using the right id. In case you are using it with ASP.NET, the id changes when rendered.

In MVC IP can be obtained by the following Code

string ipAddress = Request.ServerVariables["REMOTE_ADDR"];

Best solution is randint , but this function produce integer numbers.

You can use rand with rounding function

  r = round(a + (b-a).*rand(m,n));

This produces Real random number between a and b , size of output matrix is m*n

The performant function Python provides for this is set.issubset. It does have a few restrictions that make it unclear if it's the answer to your question, however.

A list may contain items multiple times and has a specific order. A set does not. Additionally, sets only work on hashable objects.

Are you asking about subset or subsequence (which means you'll want a string search algorithm)? Will either of the lists be the same for many tests? What are the datatypes contained in the list? And for that matter, does it need to be a list?

Your other post intersect a dict and list made the types clearer and did get a recommendation to use dictionary key views for their set-like functionality. In that case it was known to work because dictionary keys behave like a set (so much so that before we had sets in Python we used dictionaries). One wonders how the issue got less specific in three hours.

Selenium has pretty good documentation. Here is a link to the specific part of the API you are looking for:

WebElement element = driver.findElement(By.name("source"));

WebElement target = driver.findElement(By.name("target"));

(new Actions(driver)).dragAndDrop(element, target).perform();

This is to drag and drop a single file, How to drag and drop multiple files.

function resize() {

    var canvas = document.getElementById('game');
    var canvasRatio = canvas.height / canvas.width;
    var windowRatio = window.innerHeight / window.innerWidth;
    var width;
    var height;

    if (windowRatio < canvasRatio) {
        height = window.innerHeight;
        width = height / canvasRatio;
    } else {
        width = window.innerWidth;
        height = width * canvasRatio;
    }

    canvas.style.width = width + 'px';
    canvas.style.height = height + 'px';
};

window.addEventListener('resize', resize, false);

By referring this(http://www.excelforum.com/excel-programming-vba-macros/867665-application-cutcopymode-false.html) link the answer is as below:

Application.CutCopyMode=False is seen in macro recorder-generated code when you do a copy/cut cells and paste . The macro recorder does the copy/cut and paste in separate statements and uses the clipboard as an intermediate buffer. I think Application.CutCopyMode = False clears the clipboard. Without that line you will get the warning 'There is a large amount of information on the Clipboard....' when you close the workbook with a large amount of data on the clipboard.

With optimised VBA code you can usually do the copy/cut and paste operations in one statement, so the clipboard isn't used and Application.CutCopyMode = False isn't needed and you won't get the warning.

For windows use Resource Hacker

Download and Install: :D

http://www.angusj.com/resourcehacker/

• Run It
• Select open and select exe file
• On your left open a folder called Icon Group
• Right click 1: 1033
• Click replace icon
• Select the icon of your choice
• Then select replace icon
• Save then close

You should have build the app

gstreamer can handle webcam input. If I remeber well, there are python bindings for it!

Quick note: if you're also using coord_flip() to flip the x and the y axis, you won't be able to set range limits using coord_cartesian() because those two functions are exclusive (see here).

Fortunately, this is an easy fix; set your limits within coord_flip() like so:

p + coord_flip(ylim = c(3,5), xlim = c(100, 400))

This just alters the visible range (i.e. doesn't remove data points).

For me (in Angular project) this code helped:

In HTML you should add autoplay muted

In JS/TS

playVideo() {
    const media = this.videoplayer.nativeElement;
    media.muted = true; // without this line it's not working although I have "muted" in HTML
    media.play();
}

The general way to find any type is by example. The beauty of typescript is that you have access to all types, so long as you have the correct @types/ files.

To answer this myself I just thought of a component react uses that has the children prop. The first thing that came to mind? How about a <div />?

All you need to do is open vscode and create a new .tsx file in a react project with @types/react.

import React from 'react';

export default () => (
  <div children={'test'} />
);

Hovering over the children prop shows you the type. And what do you know -- Its type is ReactNode (no need for ReactNode[]).

Then if you click into the type definition it brings you straight to the definition of children coming from DOMAttributes interface.

// node_modules/@types/react/index.d.ts
interface DOMAttributes<T> {
  children?: ReactNode;
  ...
}

Note: This process should be used to find any unknown type! All of them are there just waiting for you to find them :)

if the variable contains text then:

len(variable) != 0

of it does not

len(variable) == 0

Adding a bit to mitigate the confusion here. Even though Darren Davies' (accepted) answer is more straight forward, I think Andrei's answer is a better approach for MVC applications.

The answer from Andrei means that you can use HttpContext just as you would use System.Web.HttpContext.Current. For example, if you want to do this:

System.Web.HttpContext.Current.User.Identity.Name

you should instead do this:

HttpContext.User.Identity.Name

Both achieve the same result, but (again) in terms of MVC, the latter is more recommended.

Another good and also straight forward information regarding this matter can be found here: Difference between HttpContext.Current and Controller.Context in MVC ASP.NET.

 ssh user@machine 'bash -s' < local_script.sh

or you can just

 ssh user@machine "remote command to run" 

public static void main(String[] args) {

    java.util.Scanner scan = new java.util.Scanner(System.in);
    long decimalValue = 0;

    System.out.println("Please enter a positive binary number.(Only 1s and 0s)");

    //This reads the input as a String and splits each symbol into 
    //array list
    String element = scan.nextLine();
    String[] array = element.split("");

    //This assigns the length to integer arrys based on actual number of 
    //symbols entered
    int[] numberSplit = new int[array.length];
    int position = array.length - 1; //set beginning position to the end of array

    //This turns String array into Integer array
    for (int i = 0; i < array.length; i++) {
        numberSplit[i] = Integer.parseInt(array[i]);
    }
    //This loop goes from last to first position of an array making
    //calculation where power of 2 is the current loop instance number
    for (int i = 0; i < array.length; i++) {
        if (numberSplit[position] == 1) {
            decimalValue = decimalValue + (long) Math.pow(2, i);
        }
        position--;
    }
    System.out.println(decimalValue);
    main(null);

}

You should find the 'expect' command will do what you need it to do. Its widely available. See here for an example : http://www.thegeekstuff.com/2010/10/expect-examples/

(very rough example)

#!/usr/bin/expect
set pass "mysecret"

spawn /usr/bin/passwd

expect "password: "
send "$pass"
expect "password: "
send "$pass"

As Pax said, you probably aren't going to get any faster than this. The reason is that there are almost no filesystems that support truncating from the beginning of the file so this is going to be an O(n) operation where n is the size of the file. What you can do much faster though is overwrite the first line with the same number of bytes (maybe with spaces or a comment) which might work for you depending on exactly what you are trying to do (what is that by the way?).

I had the same issue, generated from an imported project, the project had 10.3 as deployment target and I only had 10.0 installed, changing the deployment target to 10.0 solved my issues.

Try this:

UPDATE mysql.user SET password=password("elephant7") where user="root"

You can use rows and cols:

cout << "Width : " << src.cols << endl;
cout << "Height: " << src.rows << endl;

or size():

cout << "Width : " << src.size().width << endl;
cout << "Height: " << src.size().height << endl;

you can filter the waypoints by passing the user to the form init

class waypointForm(forms.Form):
    def __init__(self, user, *args, **kwargs):
        super(waypointForm, self).__init__(*args, **kwargs)
        self.fields['waypoints'] = forms.ChoiceField(
            choices=[(o.id, str(o)) for o in Waypoint.objects.filter(user=user)]
        )

from your view while initiating the form pass the user

form = waypointForm(user)

in case of model form

class waypointForm(forms.ModelForm):
    def __init__(self, user, *args, **kwargs):
        super(waypointForm, self).__init__(*args, **kwargs)
        self.fields['waypoints'] = forms.ModelChoiceField(
            queryset=Waypoint.objects.filter(user=user)
        )

    class Meta:
        model = Waypoint

If you just want a "quick and dirty" way to stash changes on the current branch, you can use the following alias:

git config --global alias.temp '!git add -A && git commit -m "Temp"'  

After running that command, you can just type git temp to have git automatically commit all your changes to the current branch as a commit named "Temp". Then, you can use git reset HEAD~ later to "uncommit" the changes so you can continue working on them, or git commit --amend to add more changes to the commit and/or give it a proper name.

I had the same problem. Solved it by using a javascript library called FileSaver

Just call

saveAs(file, 'filename');

Full http post request:

$http.post('apiUrl', myObject, { responseType: 'arraybuffer' })
  .success(function(data) {
            var file = new Blob([data], { type: 'application/pdf' });
            saveAs(file, 'filename.pdf');
        });

Even though you didn't provide enough information to answer this question properly, your best shots are SSH tunnels (or reverse SSH tunnels).

You only need one SSH server on your internal or remote network to provide access to your local machine.

You can use PUTTY (it has a GUI) on Windows to create your tunnel.

I would change your service layer to:

public Task<BackOfficeResponse<List<Country>>> ReturnAllCountries()
{
    return Task.Run(() =>
    {
        return _service.Process<List<Country>>(BackOfficeEndpoint.CountryEndpoint, "returnCountries");
    }      
}

as you have it, you are still running your _service.Process call synchronously, and gaining very little or no benefit from awaiting it.

With this approach, you are wrapping the potentially slow call in a Task, starting it, and returning it to be awaited. Now you get the benefit of awaiting the Task.

My guess is that with VWD your solutions are more likely to be deployed to third party servers, many of which do not allow for a dynamically attached SQL Server database file. Thus the allowing of the other connection type.

This difference in IDE behavior is one of the key reasons for upgrading to a full version.

In javascript (node.js) this works for me:

describe('UI', function() {

describe('gets results from Bing', function() {
    this.timeout(10000);

    it('makes a search', function(done) {
        var driver = new webdriver.Builder().
        withCapabilities(webdriver.Capabilities.chrome()).
        build();


        driver.get('http://bing.com');
        var input = driver.findElement(webdriver.By.name('q'));
        input.sendKeys('something');
        input.sendKeys(webdriver.Key.ENTER);

        driver.wait(function() {
            driver.findElement(webdriver.By.className('sb_count')).
                getText().
                then(function(result) {
                  console.log('result: ', result);
                  done();
            });
        }, 8000);


    });
  });
});

For tab use webdriver.Key.TAB

As the other answers point out, once the resources are inside a jar file, things get really ugly. In our case, this solution:

https://stackoverflow.com/a/13227570/516188

works very well in the tests (since when the tests are run the code is not packed in a jar file), but doesn't work when the app actually runs normally. So what I've done is... I hardcode the list of the files in the app, but I have a test which reads the actual list from disk (can do it since that works in tests) and fails if the actual list doesn't match with the list the app returns.

That way I have simple code in my app (no tricks), and I'm sure I didn't forget to add a new entry in the list thanks to the test.

This post was the starting point of my solution, lots of good ideas here so I though I would share my results. The main insight is that I've found a way to get around the slowness of keypoint-based image matching by exploiting the speed of phash.

For the general solution, it's best to employ several strategies. Each algorithm is best suited for certain types of image transformations and you can take advantage of that.

At the top, the fastest algorithms; at the bottom the slowest (though more accurate). You might skip the slow ones if a good match is found at the faster level.

• file-hash based (md5,sha1,etc) for exact duplicates
• perceptual hashing (phash) for rescaled images
• feature-based (SIFT) for modified images

I am having very good results with phash. The accuracy is good for rescaled images. It is not good for (perceptually) modified images (cropped, rotated, mirrored, etc). To deal with the hashing speed we must employ a disk cache/database to maintain the hashes for the haystack.

The really nice thing about phash is that once you build your hash database (which for me is about 1000 images/sec), the searches can be very, very fast, in particular when you can hold the entire hash database in memory. This is fairly practical since a hash is only 8 bytes.

For example, if you have 1 million images it would require an array of 1 million 64-bit hash values (8 MB). On some CPUs this fits in the L2/L3 cache! In practical usage I have seen a corei7 compare at over 1 Giga-hamm/sec, it is only a question of memory bandwidth to the CPU. A 1 Billion-image database is practical on a 64-bit CPU (8GB RAM needed) and searches will not exceed 1 second!

For modified/cropped images it would seem a transform-invariant feature/keypoint detector like SIFT is the way to go. SIFT will produce good keypoints that will detect crop/rotate/mirror etc. However the descriptor compare is very slow compared to hamming distance used by phash. This is a major limitation. There are a lot of compares to do, since there are maximum IxJxK descriptor compares to lookup one image (I=num haystack images, J=target keypoints per haystack image, K=target keypoints per needle image).

To get around the speed issue, I tried using phash around each found keypoint, using the feature size/radius to determine the sub-rectangle. The trick to making this work well, is to grow/shrink the radius to generate different sub-rect levels (on the needle image). Typically the first level (unscaled) will match however often it takes a few more. I'm not 100% sure why this works, but I can imagine it enables features that are too small for phash to work (phash scales images down to 32x32).

Another issue is that SIFT will not distribute the keypoints optimally. If there is a section of the image with a lot of edges the keypoints will cluster there and you won't get any in another area. I am using the GridAdaptedFeatureDetector in OpenCV to improve the distribution. Not sure what grid size is best, I am using a small grid (1x3 or 3x1 depending on image orientation).

You probably want to scale all the haystack images (and needle) to a smaller size prior to feature detection (I use 210px along maximum dimension). This will reduce noise in the image (always a problem for computer vision algorithms), also will focus detector on more prominent features.

For images of people, you might try face detection and use it to determine the image size to scale to and the grid size (for example largest face scaled to be 100px). The feature detector accounts for multiple scale levels (using pyramids) but there is a limitation to how many levels it will use (this is tunable of course).

The keypoint detector is probably working best when it returns less than the number of features you wanted. For example, if you ask for 400 and get 300 back, that's good. If you get 400 back every time, probably some good features had to be left out.

The needle image can have less keypoints than the haystack images and still get good results. Adding more doesn't necessarily get you huge gains, for example with J=400 and K=40 my hit rate is about 92%. With J=400 and K=400 the hit rate only goes up to 96%.

We can take advantage of the extreme speed of the hamming function to solve scaling, rotation, mirroring etc. A multiple-pass technique can be used. On each iteration, transform the sub-rectangles, re-hash, and run the search function again.

May be include Jquery Widget first, then Draggable? I guess that will solve the problem.....

Define a callback interface to receive whatever parameters you want to pass along in the completion notification. Then invoke it at the end of the task.

You could even write a general wrapper for Runnable tasks, and submit these to ExecutorService. Or, see below for a mechanism built into Java 8.

class CallbackTask implements Runnable {

  private final Runnable task;

  private final Callback callback;

  CallbackTask(Runnable task, Callback callback) {
    this.task = task;
    this.callback = callback;
  }

  public void run() {
    task.run();
    callback.complete();
  }

}

With CompletableFuture, Java 8 included a more elaborate means to compose pipelines where processes can be completed asynchronously and conditionally. Here's a contrived but complete example of notification.

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;

public class GetTaskNotificationWithoutBlocking {

  public static void main(String... argv) throws Exception {
    ExampleService svc = new ExampleService();
    GetTaskNotificationWithoutBlocking listener = new GetTaskNotificationWithoutBlocking();
    CompletableFuture<String> f = CompletableFuture.supplyAsync(svc::work);
    f.thenAccept(listener::notify);
    System.out.println("Exiting main()");
  }

  void notify(String msg) {
    System.out.println("Received message: " + msg);
  }

}

class ExampleService {

  String work() {
    sleep(7000, TimeUnit.MILLISECONDS); /* Pretend to be busy... */
    char[] str = new char[5];
    ThreadLocalRandom current = ThreadLocalRandom.current();
    for (int idx = 0; idx < str.length; ++idx)
      str[idx] = (char) ('A' + current.nextInt(26));
    String msg = new String(str);
    System.out.println("Generated message: " + msg);
    return msg;
  }

  public static void sleep(long average, TimeUnit unit) {
    String name = Thread.currentThread().getName();
    long timeout = Math.min(exponential(average), Math.multiplyExact(10, average));
    System.out.printf("%s sleeping %d %s...%n", name, timeout, unit);
    try {
      unit.sleep(timeout);
      System.out.println(name + " awoke.");
    } catch (InterruptedException abort) {
      Thread.currentThread().interrupt();
      System.out.println(name + " interrupted.");
    }
  }

  public static long exponential(long avg) {
    return (long) (avg * -Math.log(1 - ThreadLocalRandom.current().nextDouble()));
  }

}

The easiest way for Windows!

Download the latest version of geckodriver from here. Add the geckodriver.exe file to the Python directory (or any other directory which already in PATH). This should solve the problem (it was tested on Windows 10).

When reading this question one can get the impression, that Iterable#forEach in combination with lambda expressions is a shortcut/replacement for writing a traditional for-each loop. This is simply not true. This code from the OP:

joins.forEach(join -> mIrc.join(mSession, join));

is not intended as a shortcut for writing

for (String join : joins) {
    mIrc.join(mSession, join);
}

and should certainly not be used in this way. Instead it is intended as a shortcut (although it is not exactly the same) for writing

joins.forEach(new Consumer<T>() {
    @Override
    public void accept(T join) {
        mIrc.join(mSession, join);
    }
});

And it is as a replacement for the following Java 7 code:

final Consumer<T> c = new Consumer<T>() {
    @Override
    public void accept(T join) {
        mIrc.join(mSession, join);
    }
};
for (T t : joins) {
    c.accept(t);
}

Replacing the body of a loop with a functional interface, as in the examples above, makes your code more explicit: You are saying that (1) the body of the loop does not affect the surrounding code and control flow, and (2) the body of the loop may be replaced with a different implementation of the function, without affecting the surrounding code. Not being able to access non final variables of the outer scope is not a deficit of functions/lambdas, it is a feature that distinguishes the semantics of Iterable#forEach from the semantics of a traditional for-each loop. Once one gets used to the syntax of Iterable#forEach, it makes the code more readable, because you immediately get this additional information about the code.

Traditional for-each loops will certainly stay good practice (to avoid the overused term "best practice") in Java. But this doesn't mean, that Iterable#forEach should be considered bad practice or bad style. It is always good practice, to use the right tool for doing the job, and this includes mixing traditional for-each loops with Iterable#forEach, where it makes sense.

Since the downsides of Iterable#forEach have already been discussed in this thread, here are some reasons, why you might probably want to use Iterable#forEach:

• To make your code more explicit: As described above, Iterable#forEach can make your code more explicit and readable in some situations.

• To make your code more extensible and maintainable: Using a function as the body of a loop allows you to replace this function with different implementations (see Strategy Pattern). You could e.g. easily replace the lambda expression with a method call, that may be overwritten by sub-classes:

  joins.forEach(getJoinStrategy());
  

  Then you could provide default strategies using an enum, that implements the functional interface. This not only makes your code more extensible, it also increases maintainability because it decouples the loop implementation from the loop declaration.

• To make your code more debuggable: Seperating the loop implementation from the declaration can also make debugging more easy, because you could have a specialized debug implementation, that prints out debug messages, without the need to clutter your main code with if(DEBUG)System.out.println(). The debug implementation could e.g. be a delegate, that decorates the actual function implementation.

• To optimize performance-critical code: Contrary to some of the assertions in this thread, Iterable#forEach does already provide better performance than a traditional for-each loop, at least when using ArrayList and running Hotspot in "-client" mode. While this performance boost is small and negligible for most use cases, there are situations, where this extra performance can make a difference. E.g. library maintainers will certainly want to evaluate, if some of their existing loop implementations should be replaced with Iterable#forEach.

  To back this statement up with facts, I have done some micro-benchmarks with Caliper. Here is the test code (latest Caliper from git is needed):

  @VmOptions("-server")
  public class Java8IterationBenchmarks {
  
      public static class TestObject {
          public int result;
      }
  
      public @Param({"100", "10000"}) int elementCount;
  
      ArrayList<TestObject> list;
      TestObject[] array;
  
      @BeforeExperiment
      public void setup(){
          list = new ArrayList<>(elementCount);
          for (int i = 0; i < elementCount; i++) {
              list.add(new TestObject());
          }
          array = list.toArray(new TestObject[list.size()]);
      }
  
      @Benchmark
      public void timeTraditionalForEach(int reps){
          for (int i = 0; i < reps; i++) {
              for (TestObject t : list) {
                  t.result++;
              }
          }
          return;
      }
  
      @Benchmark
      public void timeForEachAnonymousClass(int reps){
          for (int i = 0; i < reps; i++) {
              list.forEach(new Consumer<TestObject>() {
                  @Override
                  public void accept(TestObject t) {
                      t.result++;
                  }
              });
          }
          return;
      }
  
      @Benchmark
      public void timeForEachLambda(int reps){
          for (int i = 0; i < reps; i++) {
              list.forEach(t -> t.result++);
          }
          return;
      }
  
      @Benchmark
      public void timeForEachOverArray(int reps){
          for (int i = 0; i < reps; i++) {
              for (TestObject t : array) {
                  t.result++;
              }
          }
      }
  }
  

  And here are the results:

  • Results for -client
  • Results for -server

  When running with "-client", Iterable#forEach outperforms the traditional for loop over an ArrayList, but is still slower than directly iterating over an array. When running with "-server", the performance of all approaches is about the same.

• To provide optional support for parallel execution: It has already been said here, that the possibility to execute the functional interface of Iterable#forEach in parallel using streams, is certainly an important aspect. Since Collection#parallelStream() does not guarantee, that the loop is actually executed in parallel, one must consider this an optional feature. By iterating over your list with list.parallelStream().forEach(...);, you explicitly say: This loop supports parallel execution, but it does not depend on it. Again, this is a feature and not a deficit!

  By moving the decision for parallel execution away from your actual loop implementation, you allow optional optimization of your code, without affecting the code itself, which is a good thing. Also, if the default parallel stream implementation does not fit your needs, no one is preventing you from providing your own implementation. You could e.g. provide an optimized collection depending on the underlying operating system, on the size of the collection, on the number of cores, and on some preference settings:

  public abstract class MyOptimizedCollection<E> implements Collection<E>{
      private enum OperatingSystem{
          LINUX, WINDOWS, ANDROID
      }
      private OperatingSystem operatingSystem = OperatingSystem.WINDOWS;
      private int numberOfCores = Runtime.getRuntime().availableProcessors();
      private Collection<E> delegate;
  
      @Override
      public Stream<E> parallelStream() {
          if (!System.getProperty("parallelSupport").equals("true")) {
              return this.delegate.stream();
          }
          switch (operatingSystem) {
              case WINDOWS:
                  if (numberOfCores > 3 && delegate.size() > 10000) {
                      return this.delegate.parallelStream();
                  }else{
                      return this.delegate.stream();
                  }
              case LINUX:
                  return SomeVerySpecialStreamImplementation.stream(this.delegate.spliterator());
              case ANDROID:
              default:
                  return this.delegate.stream();
          }
      }
  }
  

  The nice thing here is, that your loop implementation doesn't need to know or care about these details.

The alternative formulation of the question added in a later edit seems still to be unanswered: how to specify that among the children of an element, there must be one named child3, one named child4, and any number named child1 or child2, with no constraint on the order in which the children appear.

This is a straightforwardly definable regular language, and the content model you need is isomorphic to a regular expression defining the set of strings in which the digits '3' and '4' each occur exactly once, and the digits '1' and '2' occur any number of times. If it's not obvious how to write this, it may help to think about what kind of finite state machine you would build to recognize such a language. It would have at least four distinct states:

• an initial state in which neither '3' nor '4' has been seen
• an intermediate state in which '3' has been seen but not '4'
• an intermediate state in which '4' has been seen but not '3'
• a final state in which both '3' and '4' have been seen

No matter what state the automaton is in, '1' and '2' may be read; they do not change the machine's state. In the initial state, '3' or '4' will also be accepted; in the intermediate states, only '4' or '3' is accepted; in the final state, neither '3' nor '4' is accepted. The structure of the regular expression is easiest to understand if we first define a regex for the subset of our language in which only '3' and '4' occur:

(34)|(43)

To allow '1' or '2' to occur any number of times at a given location, we can insert (1|2)* (or [12]* if our regex language accepts that notation). Inserting this expression at all available locations, we get

(1|2)*((3(1|2)*4)|(4(1|2)*3))(1|2)*

Translating this into a content model is straightforward. The basic structure is equivalent to the regex (34)|(43):

<xsd:complexType name="paul0">
  <xsd:choice>
    <xsd:sequence>
      <xsd:element ref="child3"/>
      <xsd:element ref="child4"/>
    </xsd:sequence>
    <xsd:sequence>
      <xsd:element ref="child4"/>
      <xsd:element ref="child3"/>
    </xsd:sequence>
  </xsd:choice>
</xsd:complexType>

Inserting a zero-or-more choice of child1 and child2 is straightforward:

<xsd:complexType name="paul1">
  <xsd:sequence>
    <xsd:choice minOccurs="0" maxOccurs="unbounded">
      <xsd:element ref="child1"/>
      <xsd:element ref="child2"/>
    </xsd:choice>      
    <xsd:choice>
      <xsd:sequence>
        <xsd:element ref="child3"/>
        <xsd:choice minOccurs="0" maxOccurs="unbounded">
          <xsd:element ref="child1"/>
          <xsd:element ref="child2"/>
        </xsd:choice>      
        <xsd:element ref="child4"/>
      </xsd:sequence>
      <xsd:sequence>
        <xsd:element ref="child4"/>
        <xsd:choice minOccurs="0" maxOccurs="unbounded">
          <xsd:element ref="child1"/>
          <xsd:element ref="child2"/>
        </xsd:choice>      
        <xsd:element ref="child3"/>
      </xsd:sequence>
    </xsd:choice>
    <xsd:choice minOccurs="0" maxOccurs="unbounded">
      <xsd:element ref="child1"/>
      <xsd:element ref="child2"/>
    </xsd:choice>      
  </xsd:sequence>
</xsd:complexType>

If we want to minimize the bulk a bit, we can define a named group for the repeating choices of child1 and child2:

<xsd:group name="onetwo">
  <xsd:choice>
    <xsd:element ref="child1"/>
    <xsd:element ref="child2"/>
  </xsd:choice>   
</xsd:group>

<xsd:complexType name="paul2">
  <xsd:sequence>
    <xsd:group ref="onetwo" minOccurs="0" maxOccurs="unbounded"/>
    <xsd:choice>
      <xsd:sequence>
        <xsd:element ref="child3"/>
        <xsd:group ref="onetwo" minOccurs="0" maxOccurs="unbounded"/>
        <xsd:element ref="child4"/>
      </xsd:sequence>
      <xsd:sequence>
        <xsd:element ref="child4"/>
        <xsd:group ref="onetwo" minOccurs="0" maxOccurs="unbounded"/>
        <xsd:element ref="child3"/>
      </xsd:sequence>
    </xsd:choice>  
    <xsd:group ref="onetwo" minOccurs="0" maxOccurs="unbounded"/>
  </xsd:sequence>
</xsd:complexType>

In XSD 1.1, some of the constraints on all-groups have been lifted, so it's possible to define this content model more concisely:

<xsd:complexType name="paul3">
  <xsd:all>
    <xsd:element ref="child1" minOccurs="0" maxOccurs="unbounded"/>
    <xsd:element ref="child2" minOccurs="0" maxOccurs="unbounded"/>
    <xsd:element ref="child3"/>
    <xsd:element ref="child4"/>      
  </xsd:all>
</xsd:complexType>

But as can be seen from the examples given earlier, these changes to all-groups do not in fact change the expressive power of the language; they only make the definition of certain kinds of languages more succinct.

zlib handles the deflate compression/decompression algorithm, but there is more than that in a ZIP file.

You can try libzip. It is free, portable and easy to use.

UPDATE: Here I attach quick'n'dirty example of libzip, with all the error controls ommited:

#include <zip.h>

int main()
{
    //Open the ZIP archive
    int err = 0;
    zip *z = zip_open("foo.zip", 0, &err);

    //Search for the file of given name
    const char *name = "file.txt";
    struct zip_stat st;
    zip_stat_init(&st);
    zip_stat(z, name, 0, &st);

    //Alloc memory for its uncompressed contents
    char *contents = new char[st.size];

    //Read the compressed file
    zip_file *f = zip_fopen(z, name, 0);
    zip_fread(f, contents, st.size);
    zip_fclose(f);

    //And close the archive
    zip_close(z);

    //Do something with the contents
    //delete allocated memory
    delete[] contents;
}

I got this error, and it was because I had the arguments in the wrong order:

CORRECT

java maui.main.Examples tagging -jar maui-1.0.jar 

WRONG

java -jar maui-1.0.jar maui.main.Examples tagging 

#include <stdint.h>
#define IS_LITTLE_ENDIAN (*(uint16_t*)"\0\1">>8)
#define IS_BIG_ENDIAN (*(uint16_t*)"\1\0">>8)

This is simple and works for me very well

add this inside onCreate() method

getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);

add this outside oncreate() method

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    onBackPressed();
    return true;
}

Another example is:

$(".myClass").on("click", function () {
   var $this = $(this);

   if ($this.hasClass("show") {
    $this.removeClass("show");
   } else {
    $this.addClass("show");
   }
});

Note that typeof always returns a string, and doesn't generate an error if the variable doesn't exist at all.

function A(val){
  if(typeof(val)  === "undefined") 
    //do this
  else
   //do this
}

At first choose your API level from the following links:

API Level 17: http://dl-ssl.google.com/android/repository/docs-17_r02.zip

API Level 18: http://dl-ssl.google.com/android/repository/docs-18_r02.zip

API Level 19: http://dl-ssl.google.com/android/repository/docs-19_r02.zip

Android-L API doc: http://dl-ssl.google.com/android/repository/docs-L_r01.zip

API Level 24 doc: https://dl-ssl.google.com/android/repository/docs-24_r01.zip

download and extract it in your sdk driectory.

In your eclipse IDE:

at project -> properties -> java build path -> Libraries -> Android x.x -> android.jar -> javadoc

press edit in right:

javadoc URL -> Browse

select "docs/reference/" in archive extracted directory

press validate... to validate this javadoc.

In your IntelliJ IDEA

at file -> Project Structure Select SDKs from left panel -> select your sdk from middle panel -> in right panel go to Documentation Paths tab so click plus icon and select docs/reference/ in archive extracted directory.

enjoy the offline javadoc...

The best way to do this without more images :

public static void buttonEffect(View button){
    button.setOnTouchListener(new OnTouchListener() {

        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN: {
                    v.getBackground().setColorFilter(0xe0f47521,PorterDuff.Mode.SRC_ATOP);
                    v.invalidate();
                    break;
                }
                case MotionEvent.ACTION_UP: {
                    v.getBackground().clearColorFilter();
                    v.invalidate();
                    break;
                }
            }
            return false;
        }
    });
}

As @ashishduh mentioned above, using android:autoLink="phone is also a good solution. But this option comes with one drawback, it doesn't work with all phone number lengths. For instance, a phone number of 11 numbers won't work with this option. The solution is to prefix your phone numbers with the country code.

Example:

08034448845 won't work

but +2348034448845 will

I wanted to solve this problem:

string sample1 = "configuration/config.xml";
string sample2 = "/configuration/config.xml";
string sample3 = "\\configuration/config.xml";

string dir1 = "c:\\temp";
string dir2 = "c:\\temp\\";
string dir3 = "c:\\temp/";

string path1 = PathCombine(dir1, sample1);
string path2 = PathCombine(dir1, sample2);
string path3 = PathCombine(dir1, sample3);

string path4 = PathCombine(dir2, sample1);
string path5 = PathCombine(dir2, sample2);
string path6 = PathCombine(dir2, sample3);

string path7 = PathCombine(dir3, sample1);
string path8 = PathCombine(dir3, sample2);
string path9 = PathCombine(dir3, sample3);

Of course, all paths 1-9 should contain an equivalent string in the end. Here is the PathCombine method I came up with:

private string PathCombine(string path1, string path2)
{
    if (Path.IsPathRooted(path2))
    {
        path2 = path2.TrimStart(Path.DirectorySeparatorChar);
        path2 = path2.TrimStart(Path.AltDirectorySeparatorChar);
    }

    return Path.Combine(path1, path2);
}

I also think that it is quite annoying that this string handling has to be done manually, and I'd be interested in the reason behind this.

Note that PHP session cookies don't use httponly by default.

To do that:

$sess_name = session_name();
if (session_start()) {
    setcookie($sess_name, session_id(), null, '/', null, null, true);
}

A couple of items of note here:

• You have to call session_name() before session_start()
• This also sets the default path to '/', which is necessary for Opera but which PHP session cookies don't do by default either.

The question asks a validation method for an url such as stackoverflow, without the protocol or any dot in the hostname. So, it's not a matter of validating url sintax, but checking if it's a valid url, by actually calling it.

I tried several methods for knowing if the url true exists and is callable from within the browser, but did not find any way to test with javascript the response header of the call:

• adding an anchor element is fine for firing the click() method.
• making ajax call to the challenging url with 'GET' is fine, but has it's various limitations due to CORS policies and it is not the case of using ajax, for as the url maybe any outside my server's domain.
• using the fetch API has a workaround similar to ajax.
• other problem is that I have my server under https protocol and throws an exception when calling non secure urls.

So, the best solution I can think of is getting some tool to perform CURL using javascript trying something like curl -I <url>. Unfortunately I did not find any and in appereance it's not possible. I will appreciate any comments on this.

But, in the end, I have a server running PHP and as I use Ajax for almost all my requests, I wrote a function on the server side to perform the curl request there and return to the browser.

Regarding the single word url on the question 'stackoverflow' it will lead me to https://daniserver.com.ar/stackoverflow, where daniserver.com.ar is my own domain.

Microsoft recommends using singular for Enums unless the Enum represents bit fields (use the FlagsAttribute as well). See Enumeration Type Naming Conventions (a subset of Microsoft's Naming Guidelines).

To respond to your clarification, I see nothing wrong with either of the following:

public enum OrderStatus { Pending, Fulfilled, Error };

public class SomeClass { 
    public OrderStatus OrderStatus { get; set; }
}

or

public enum OrderStatus { Pending, Fulfilled, Error };

public class SomeClass {
    public OrderStatus Status { get; set; }
}

This seems as good a place as any to document another possible reason for the infamous PKIX error message. After spending far too long looking at the keystore and truststore contents and various java installation configs I realised that my issue was down to... a typo.

The typo meant that I was also using the keystore as the truststore. As my companies Root CA was not defined as a standalone cert in the keystore but only as part of a cert chain, and was not defined anywhere else (i.e. cacerts) I kept getting the PKIX error.

After a failed release (this is prod config, it was ok elsewhere) and two days of head scratching I finally saw the typo, and now all is good.

Hope this helps someone.

pip is a command line tool, not Python syntax.

In other words, run the command in your console, not in the Python interpreter:

pip install beautifulsoup4

You may have to use the full path:

C:\Python27\Scripts\pip install beautifulsoup4

or even

C:\Python27\Scripts\pip.exe install beautifulsoup4

Windows will then execute the pip program and that will use Python to install the package.

Another option is to use the Python -m command-line switch to run the pip module, which then operates exactly like the pip command:

python -m pip install beautifulsoup4

or

python.exe -m pip install beautifulsoup4

System.Text.ASCIIEncoding.Unicode.GetByteCount(yourString);

Or

System.Text.ASCIIEncoding.ASCII.GetByteCount(yourString);

This should work, at least according to the Search Filter Syntax article on MSDN network.

The "hang-up" you have noticed is probably just a delay. Try running the same query with narrower scope (for example the specific OU where the test object is located), as it may take very long time for processing if you run it against all AD objects.

You may also try separating the filter into two parts:

(|(displayName=*searchstring)(displayName=searchstring*))

Check out this post from Alan Gates, Pig architect at Yahoo!, that compares when would use a SQL like Hive rather than Pig. He makes a very convincing case as to the usefulness of a procedural language like Pig (vs. declarative SQL) and its utility to dataflow designers.

If we need only one column to be numeric

yyz$b <- as.numeric(as.character(yyz$b))

But, if all the columns needs to changed to numeric, use lapply to loop over the columns and convert to numeric by first converting it to character class as the columns were factor.

yyz[] <- lapply(yyz, function(x) as.numeric(as.character(x)))

Both the columns in the OP's post are factor because of the string "n/a". This could be easily avoided while reading the file using na.strings = "n/a" in the read.table/read.csv or if we are using data.frame, we can have character columns with stringsAsFactors=FALSE (the default is stringsAsFactors=TRUE)

Regarding the usage of apply, it converts the dataset to matrix and matrix can hold only a single class. To check the class, we need

lapply(yyz, class)

Or

sapply(yyz, class)

Or check

str(yyz)

The wb indicates that the file is opened for writing in binary mode.

When writing in binary mode, Python makes no changes to data as it is written to the file. In text mode (when the b is excluded as in just w or when you specify text mode with wt), however, Python will encode the text based on the default text encoding. Additionally, Python will convert line endings (\n) to whatever the platform-specific line ending is, which would corrupt a binary file like an exe or png file.

Text mode should therefore be used when writing text files (whether using plain text or a text-based format like CSV), while binary mode must be used when writing non-text files like images.

References:

https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files https://docs.python.org/3/library/functions.html#open

Global variables are bad, if they allow you to manipulate aspects of a program that should be only modified locally. In OOP globals often conflict with the encapsulation-idea.

I think you lack to pass Connection object to your command object. and it is much better if you will use command and parameters for that.

using (SqlConnection connection = new SqlConnection("ConnectionStringHere"))
{
    using (SqlCommand command = new SqlCommand())
    {
        command.Connection = connection;            // <== lacking
        command.CommandType = CommandType.Text;
        command.CommandText = "INSERT into tbl_staff (staffName, userID, idDepartment) VALUES (@staffName, @userID, @idDepart)";
        command.Parameters.AddWithValue("@staffName", name);
        command.Parameters.AddWithValue("@userID", userId);
        command.Parameters.AddWithValue("@idDepart", idDepart);

        try
        {
            connection.Open();
            int recordsAffected = command.ExecuteNonQuery();
        }
        catch(SqlException)
        {
            // error here
        }
        finally
        {
            connection.Close();
        }
    }
}

Consider Using windows 7 64bits

C:\Users\Administrador\AppData\Local\Android\sdk

It sounds like the Xml may not be well formed. If that is the case, then you will not be able to cast it as Xml and given that, you are limited in how much text you can return in Management Studio. However, you could break up the text into smaller chunks like so:

With Tally As
    (
        Select ROW_NUMBER() OVER ( ORDER BY s1.object_id ) - 1 As Num
        From sys.sysobjects As s1
            Cross Join sys.sysobjects As s2
    )
Select Substring(T1.textCol, T2.Num * 8000 + 1, 8000)
From Table As T1
    Cross Join Tally As T2
Where T2.Num <= Ceiling(Len(T1.textCol) / 8000)
Order By T2.Num

You would then need to manually combine them again.

EDIT

It sounds like there are some characters in the text data that the Xml parser does not like. You could try converting those values to entities and then try the Convert(xml, data) trick. So something like:

Update Table
Set Data = Replace(Cast(Data As varchar(max)),'<','&lt;')

(I needed to cast to varchar(max) because the replace function will not work on text columns. There should not be any reason you couldn't convert those text columns to varchar(max).)

Using this:

if (navigator.userAgent.match("MSIE")) {}

Here's my current solution to run any code remotely on a given machine or list of machines asynchronously with logging, too!

@echo off
:: by Ralph Buchfelder, thanks to Mark Russinovich and Rob van der Woude for their work!
:: requires PsExec.exe to be in the same directory (download from http://technet.microsoft.com/de-de/sysinternals/bb897553.aspx)
:: troubleshoot remote commands with PsExec arguments -i or -s if neccessary (see http://forum.sysinternals.com/pstools_forum8.html)
:: will run *in parallel* on a list of remote pcs (if given); to run serially please remove 'START "" CMD.EXE /C' from the psexec call


:: help
if '%1' =='-h' (
 echo.
 echo %~n0
 echo.
 echo Runs a command on one or many remote machines. If no input parameters
 echo are given you will be asked for a target remote machine.
 echo.
 echo You will be prompted for remote credentials with elevated privileges.
 echo.
 echo UNC paths and local paths can be supplied.
 echo Commands will be executed on the remote side just the way you typed
 echo them, so be sure to mind extensions and the path variable!
 echo.
 echo Please note that PsExec.exe must be allowed on remote machines, i.e.
 echo not blocked by firewall or antivirus solutions.
 echo.
 echo Syntax: %~n0 [^<inputfile^>]
 echo.
 echo     inputfile      = a plain text file ^(one hostname or ip address per line^)
 echo.
 echo.
 echo Example:
 echo %~n0 mylist.txt
 exit /b 0
)


:checkAdmin
>nul 2>&1 "%SYSTEMROOT%\system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"
if '%errorlevel%' neq '0' (
 echo Set UAC = CreateObject^("Shell.Application"^) > "%temp%\getadmin.vbs"
 echo UAC.ShellExecute "%~s0", "", "", "runas", 1 >> "%temp%\getadmin.vbs"
 "%temp%\getadmin.vbs"
 del "%temp%\getadmin.vbs"
 exit /B
)
set ADMINTESTDIR=%WINDIR%\System32\Test_%RANDOM%
mkdir "%ADMINTESTDIR%" 2>NUL
if errorlevel 1 (
 cls
 echo ERROR: This script requires elevated privileges!
 echo.
 echo Launch by Right-Click / Run as Administrator ...
 pause
 exit /b 1
) else (
 rd /s /q "%ADMINTESTDIR%"
 echo Running with elevated privileges...
)
echo.


:checkRequirements
if not exist "%~dp0PsExec.exe" (
 echo PsExec.exe from Sysinternals/Microsoft not found 
 echo in %~dp0
 echo.
 echo Download from http://technet.microsoft.com/de-de/sysinternals/bb897553.aspx
 echo.
 pause
 exit /B
)


:environment
setlocal
echo.
echo %~n0
echo _____________________________
echo.
echo Working directory:  %cd%\
echo Script directory:   %~dp0
echo.
SET /P REMOTE_USER=Domain\Administrator : 
SET "psCommand=powershell -Command "$pword = read-host 'Kennwort' -AsSecureString ; ^
    $BSTR=[System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword); ^
        [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)""
for /f "usebackq delims=" %%p in (`%psCommand%`) do set REMOTE_PASS=%%p
if NOT DEFINED REMOTE_PASS SET /P REMOTE_PASS=Password             : 
echo.
if '%1' =='' goto menu
SET REMOTE_LIST=%1


:inputMultipleTargets
if not exist %REMOTE_LIST% (
 echo File %REMOTE_LIST% not found
 goto menu
)
type %REMOTE_LIST% >nul
if '%errorlevel%' neq '0' (
 echo Access denied %REMOTE_LIST%
 goto menu
)
set batchProcessing=true
echo Batch processing:   %REMOTE_LIST%   ...
ping -n 2 127.0.0.1 >nul
goto runOnce


:menu
if exist "%~dp0last.computer"  set /p LAST_COMPUTER=<"%~dp0last.computer"
if exist "%~dp0last.listing"   set /p LAST_LISTING=<"%~dp0last.listing"
if exist "%~dp0last.directory" set /p LAST_DIRECTORY=<"%~dp0last.directory"
if exist "%~dp0last.command"   set /p LAST_COMMAND=<"%~dp0last.command"
if exist "%~dp0last.timestamp" set /p LAST_TIMESTAMP=<"%~dp0last.timestamp"
echo.
echo.
echo                (1)  select target computer [default]
echo                (2)  select multiple computers
echo                     -----------------------------------
echo                     last target : %LAST_COMPUTER%
echo                     last listing: %LAST_LISTING%
echo                     last path   : %LAST_DIRECTORY%
echo                     last command: %LAST_COMMAND%
echo                     last run    : %LAST_TIMESTAMP%
echo                     -----------------------------------
echo                (0)  exit
echo.
echo ENTER your choice.
echo.
echo.
:mychoice
SET /P mychoice=(0, 1, ...): 
if NOT DEFINED mychoice  goto promptSingleTarget
if "%mychoice%"=="1"     goto promptSingleTarget
if "%mychoice%"=="2"     goto promptMultipleTargets
if "%mychoice%"=="0"     goto end
goto mychoice


:promptMultipleTargets
echo.
echo Please provide an input file
echo [one IP address or hostname per line]
SET /P REMOTE_LIST=Filename             : 
goto inputMultipleTargets


:promptSingleTarget
SET batchProcessing=
echo.
echo Please provide a hostname
SET /P REMOTE_COMPUTER=Target computer      : 
goto runOnce


:runOnce
cls
echo Note: Paths are mandatory for CMD-commands (e.g. dir,copy) to work!
echo       Paths are provided on the remote machine via PUSHD.
echo.
SET /P REMOTE_PATH=UNC-Path or folder : 
SET /P REMOTE_CMD=Command with params: 
SET REMOTE_TIMESTAMP=%DATE% %TIME:~0,8%
echo.
echo Remote command starting (%REMOTE_PATH%\%REMOTE_CMD%) on %REMOTE_TIMESTAMP%...
if not defined batchProcessing goto runOnceSingle


:runOnceMulti
REM do for each line; this circumvents PsExec's @file to have stdouts separately
SET REMOTE_LOG=%~dp0\log\%REMOTE_LIST%
if not exist %REMOTE_LOG% md %REMOTE_LOG%
for /F "tokens=*" %%A in (%REMOTE_LIST%) do (
 if "%REMOTE_PATH%" =="" START "" CMD.EXE /C ^(%~dp0PSEXEC -u %REMOTE_USER% -p %REMOTE_PASS% -h -accepteula \\%%A cmd /c "%REMOTE_CMD%" ^>"%REMOTE_LOG%\%%A.log" 2^>"%REMOTE_LOG%\%%A_debug.log" ^)
 if not "%REMOTE_PATH%" =="" START "" CMD.EXE /C ^(%~dp0PSEXEC -u %REMOTE_USER% -p %REMOTE_PASS% -h -accepteula \\%%A cmd /c "pushd %REMOTE_PATH% && %REMOTE_CMD% & popd" ^>"%REMOTE_LOG%\%%A.log" 2^>"%REMOTE_LOG%\%%A_debug.log" ^)
)
goto restart


:runOnceSingle
SET REMOTE_LOG=%~dp0\log
if not exist %REMOTE_LOG% md %REMOTE_LOG%
if "%REMOTE_PATH%" =="" %~dp0PSEXEC -u %REMOTE_USER% -p %REMOTE_PASS% -h -accepteula \\%REMOTE_COMPUTER% cmd /c "%REMOTE_CMD%" >"%REMOTE_LOG%\%REMOTE_COMPUTER%.log" 2>"%REMOTE_LOG%\%REMOTE_COMPUTER%_debug.log"
if not "%REMOTE_PATH%" =="" %~dp0PSEXEC -u %REMOTE_USER% -p %REMOTE_PASS% -h -accepteula \\%REMOTE_COMPUTER% cmd /c "pushd %REMOTE_PATH% && %REMOTE_CMD% & popd" >"%REMOTE_LOG%\%REMOTE_COMPUTER%.log" 2>"%REMOTE_LOG%\%REMOTE_COMPUTER%_debug.log"
goto restart


:restart
echo.
echo.
echo Batch completed. Finished with last errorlevel %errorlevel% .
echo All outputs have been saved to %~dp0log\%REMOTE_TIMESTAMP%\.
echo %REMOTE_PATH% >"%~dp0last.directory"
echo %REMOTE_CMD% >"%~dp0last.command"
echo %REMOTE_LIST% >"%~dp0last.listing"
echo %REMOTE_COMPUTER% >"%~dp0last.computer"
echo %REMOTE_TIMESTAMP% >"%~dp0last.timestamp"
SET REMOTE_PATH=
SET REMOTE_CMD=
SET REMOTE_LIST=
SET REMOTE_COMPUTER=
SET REMOTE_LOG=
SET REMOTE_TIMESTAMP=
ping -n 2 127.0.0.1 >nul
goto menu


:end
SET REMOTE_USER=
SET REMOTE_PASS=

If your Linux distro came with Python already installed, you should be able to install PIP using your system’s package manager. This is preferable since system-installed versions of Python do not play nicely with the get-pip.py script used on Windows and Mac.

Advanced Package Tool (Python 2.x)

sudo apt-get install python-pip

Advanced Package Tool (Python 3.x)

sudo apt-get install python3-pip

pacman Package Manager (Python 2.x)

sudo pacman -S python2-pip

pacman Package Manager (Python 3.x)

sudo pacman -S python-pip

Yum Package Manager (Python 2.x)

sudo yum upgrade python-setuptools
sudo yum install python-pip python-wheel

Yum Package Manager (Python 3.x)

sudo yum install python3 python3-wheel

Dandified Yum (Python 2.x)

sudo dnf upgrade python-setuptools
sudo dnf install python-pip python-wheel

Dandified Yum (Python 3.x)

sudo dnf install python3 python3-wheel

Zypper Package Manager (Python 2.x)

sudo zypper install python-pip python-setuptools python-wheel

Zypper Package Manager (Python 3.x)

sudo zypper install python3-pip python3-setuptools python3-wheel

You’re looking for urllib.parse.urlencode

import urllib.parse

params = {'username': 'administrator', 'password': 'xyz'}
encoded = urllib.parse.urlencode(params)
# Returns: 'username=administrator&password=xyz'

I currently use this statusbar settings:

set laststatus=2
set statusline=\ %f%m%r%h%w\ %=%({%{&ff}\|%{(&fenc==\"\"?&enc:&fenc).((exists(\"+bomb\")\ &&\ &bomb)?\",B\":\"\")}%k\|%Y}%)\ %([%l,%v][%p%%]\ %)

My complete .vimrc file: http://gabriev82.altervista.org/projects/vim-configuration/

SELECT * FROM news WHERE date > DATEADD(d,-1,GETDATE())

Try this

\d{1,2}\.?(\.\d{1,2})?

If you just want to calculate the schema size without tablespace free space and indexes :

select
   sum(bytes)/1024/1024 as size_in_mega,
   segment_type
from
   dba_segments
where
   owner='<schema's owner>'
group by
   segment_type;

For all schemas

select
   sum(bytes)/1024/1024 as size_in_mega, owner
from
   dba_segments
group by
  owner;

Have the below js inside the iframe and use ajax to submit the form.

$(function(){

   $("form").submit(e){
        e.preventDefault();

       //Use ajax to submit the form
       $.ajax({
          url: this.action,
          data: $(this).serialize(),
          success: function(){
             window.parent.$("#target").load("urlOfThePageToLoad");
          });
       });

   });

});

The best way is to use closures, because the window object gets very, very cluttered with properties.

HTML

<!DOCTYPE html>
<html>
  <head>
    <script type="text/javascript" src="init.js"></script>
    <script type="text/javascript">
      MYLIBRARY.init(["firstValue", 2, "thirdValue"]);
    </script>
    <script src="script.js"></script>
  </head>

  <body>
    <h1>Hello !</h1>
  </body>
</html>

init.js (based on this answer)

var MYLIBRARY = MYLIBRARY || (function(){
    var _args = {}; // Private

    return {
        init : function(Args) {
            _args = Args;
            // Some other initialising
        },
        helloWorld : function(i) {
            return _args[i];
        }
    };
}());

script.js

// Here you can use the values defined in the HTML content as if it were a global variable
var a = "Hello World " + MYLIBRARY.helloWorld(2);

alert(a);

Here's the plnkr. Hope it help !

Because boolean data type is stored like an integer, bit operator ^ functions like a XOR operation if used with boolean values.

//©Mfpl - XOR_Test.java

    public class XOR_Test {
        public static void main (String args[]) {
            boolean a,b;

            a=false; b=false;
            System.out.println("a=false; b=false;  ->  " + (a^b));

            a=false; b=true;
            System.out.println("a=false; b=true;  ->  " + (a^b));

            a=true;  b=false;
            System.out.println("a=true;  b=false;  ->  " + (a^b));

            a=true; b=true;
            System.out.println("a=true; b=true;  ->  " + (a^b));

            /*  output of this program:
                    a=false; b=false;  ->  false
                    a=false; b=true;  ->  true
                    a=true;  b=false;  ->  true
                    a=true; b=true;  ->  false
            */
        }
    }

The <footer> tag seems like a good candidate:

<footer>&copy; 2011 Some copyright message</footer>

I know this is an older thread however I needed to write a function that returned the first blank row WITHIN a range. All of the code I found online actually searches the entire row (even the cells outside of the range) for a blank row. Data in ranges outside the search range was triggering a used row. This seemed to me to be a simple solution:

Function FirstBlankRow(ByVal rngToSearch As Range) As Long
   Dim R As Range
   Dim C As Range
   Dim RowIsBlank As Boolean

   For Each R In rngToSearch.Rows
      RowIsBlank = True
      For Each C In R.Cells
         If IsEmpty(C.Value) = False Then RowIsBlank = False
      Next C
      If RowIsBlank Then
         FirstBlankRow = R.Row
         Exit For
      End If
   Next R
End Function

See excerpt from official documentation for containment option:

containment

Default: false

Constrains dragging to within the bounds of the specified element or region.
Multiple types supported:

• Selector: The draggable element will be contained to the bounding box of the first element found by the selector. If no element is found, no containment will be set.
• Element: The draggable element will be contained to the bounding box of this element.
• String: Possible values: "parent", "document", "window".
• Array: An array defining a bounding box in the form [ x1, y1, x2, y2 ].

Code examples:
Initialize the draggable with the containment option specified:

$( ".selector" ).draggable({
    containment: "parent" 
}); 

Get or set the containment option, after initialization:

// Getter
var containment = $( ".selector" ).draggable( "option", "containment" );
// Setter
$( ".selector" ).draggable( "option", "containment", "parent" );

You have to play with JSFiddle loading option :

set it to "No wrap - in body" instead of "onload"

Working fiddle : http://jsfiddle.net/zQv9n/1/

No, you can simply use com.fasterxml.jackson.databind.ObjectMapper. Most likely you forgot to fix your import-statements, delete all references to codehaus and you're golden.

Use aggregation on name and get name with count > 1:

db.collection.aggregate([
    {"$group" : { "_id": "$name", "count": { "$sum": 1 } } },
    {"$match": {"_id" :{ "$ne" : null } , "count" : {"$gt": 1} } }, 
    {"$project": {"name" : "$_id", "_id" : 0} }
]);

To sort the results by most to least duplicates:

db.collection.aggregate([
    {"$group" : { "_id": "$name", "count": { "$sum": 1 } } },
    {"$match": {"_id" :{ "$ne" : null } , "count" : {"$gt": 1} } }, 
    {"$sort": {"count" : -1} },
    {"$project": {"name" : "$_id", "_id" : 0} }     
]);

To use with another column name than "name", change "$name" to "$column_name"

It depends on the nature of your application. And, since you did not describe it in great detail, it is an impossible question to answer. I find Backbone to be the easiest, but I work in Angular all day. Performance is more up to the coder than the framework, in my opinion.

Are you doing heavy DOM manipulation? I would use jQuery and Backbone.

Very data driven app? Angular with its nice data binding.

Game programming? None - direct to canvas; maybe a game engine.

Drop a MongoDB database using python:

import argparse

import pymongo


if __name__ == "__main__":
    """
    Drop a Database.
    """

    parser = argparse.ArgumentParser()
    parser.add_argument("--host", default='mongodb://localhost:27017',
                        help="mongodb URI [default: %(default)s]")
    parser.add_argument("--database", default=None,
                        help="database name: %(default)s]")

    args = parser.parse_args()

    client = pymongo.MongoClient(host=args.host)

    if args.database in client.list_database_names():
        client.drop_database(args.database)
        print(f"Dropped: '{args.database}'")
    else:
        print(f"Database '{args.database}' does not exist")

To pass an object to a fragment, do the following:

First store the objects in Bundle, don't forget to put implements serializable in class.

            CategoryRowFragment fragment = new CategoryRowFragment();

            // pass arguments to fragment
            Bundle bundle = new Bundle();

            // event list we want to populate
            bundle.putSerializable("eventsList", eventsList);

            // the description of the row
            bundle.putSerializable("categoryRow", categoryRow);

            fragment.setArguments(bundle);

Then retrieve bundles in Fragment

       // events that will be populated in this row_x000D_
        mEventsList = (ArrayList<Event>)getArguments().getSerializable("eventsList");_x000D_
_x000D_
        // description of events to be populated in this row_x000D_
        mCategoryRow = (CategoryRow)getArguments().getSerializable("categoryRow");

You can override the method isCellEditable and implement as you want for example:

//instance table model
DefaultTableModel tableModel = new DefaultTableModel() {

    @Override
    public boolean isCellEditable(int row, int column) {
       //all cells false
       return false;
    }
};

table.setModel(tableModel);

or

//instance table model
DefaultTableModel tableModel = new DefaultTableModel() {

   @Override
   public boolean isCellEditable(int row, int column) {
       //Only the third column
       return column == 3;
   }
};

table.setModel(tableModel);

Note for if your JTable disappears

If your JTable is disappearing when you use this it is most likely because you need to use the DefaultTableModel(Object[][] data, Object[] columnNames) constructor instead.

//instance table model
DefaultTableModel tableModel = new DefaultTableModel(data, columnNames) {

    @Override
    public boolean isCellEditable(int row, int column) {
       //all cells false
       return false;
    }
};

table.setModel(tableModel);

Another way you can get this linker error (as I was) is if you are exporting an instance of a class from a DLL file, but have not declared that class itself as import/export.

#ifdef  MYDLL_EXPORTS
   #define DLLEXPORT __declspec(dllexport)
#else
   #define DLLEXPORT __declspec(dllimport)
#endif

class DLLEXPORT Book // <--- This class must also be declared as export/import
{
    public:
        Book();
        ~Book();
        int WordCount();
};

DLLEXPORT extern Book book; // <-- This is what I really wanted, to export book object

So even though primarily I was exporting just an instance of the Book class called book above, I had to declare the Book class as export/import class as well otherwise calling book.WordCount() in the other DLL file was causing a link error.

I've managed a project that does this with sockets for years. Zebra's typically use port 6101. I'll look through the code and post what I can.

public void SendData(string zpl)
{
    NetworkStream ns = null;
    Socket socket = null;

    try
    {
        if (printerIP == null)
        {
            /* IP is a string property for the printer's IP address. */
            /* 6101 is the common port of all our Zebra printers. */
            printerIP = new IPEndPoint(IPAddress.Parse(IP), 6101);  
        }

        socket = new Socket(AddressFamily.InterNetwork,
            SocketType.Stream,
            ProtocolType.Tcp);
        socket.Connect(printerIP);

        ns = new NetworkStream(socket);

        byte[] toSend = Encoding.ASCII.GetBytes(zpl);
        ns.Write(toSend, 0, toSend.Length);
    }
    finally
    {
        if (ns != null)
            ns.Close();

        if (socket != null && socket.Connected)
            socket.Close();
    }
}

Actually @Nick Desjardins answered perfect. But just for education: you can use dirty approach: using ENV argument

task :my_task do
  myvar = ENV['myvar']
  puts "myvar: #{myvar}"
end 

rake my_task myvar=10
#=> myvar: 10

I have tried over a half-dozen solutions suggested on Stack Overflow, and the only thing that worked for me was this:

<div class="row" style="display: flex; flex-wrap: wrap">
    <div class="col-md-6">
        Column A
    </div>
    <div class="col-md-6">
        Column B
    </div>
</div>

I got the solution from https://codepen.io/ondrejsvestka/pen/gWPpPo

Note that it seems to affect the column margins. I had to apply adjustments to those.

You don't need to run Xcode 10.2 for iOS 12.2 support. You just need access to the appropriate folder in DeviceSupport.

A possible solution is

• Download Xcode 10.2 from a direkt link (not from App Store).
• Rename it for example to Xcode102.
• Put it into /Applications. It's possible to have multiple Xcode versions in the same directory.

• Create a symbolic link in Terminal.app to have access to the 12.2 device support folder in Xcode 10.2

  ln -s /Applications/Xcode102.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/12.2\ \(16E226\) /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
  

You can move Xcode 10.2 to somewhere else but then you have to adjust the path.

Now Xcode 10.1 supports devices running iOS 12.2

As has already been mentioned there is the as yet not fully supported window.location.origin but instead of either using it or creating a new variable to use, I prefer to check for it and if it isn't set to set it.

For example;

if (!window.location.origin) {
  window.location.origin = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');
}

I actually wrote about this a few months back A fix for window.location.origin

In this mode you can find all element which has class active and remove it

try this

$(document).ready(function() {
        $(this.attr('id')).click(function () {
           $(document).find('.active').removeClass('active');
           var DivId = $(this).attr('id');
           alert(DivId);
           $(this).addClass('active');
        });
  });

Exporting values List to Excel

1. Install in nuget next reference
2. Install-Package Syncfusion.XlsIO.Net.Core -Version 17.2.0.35
3. Install-Package ClosedXML -Version 0.94.2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ClosedXML;
using ClosedXML.Excel;
using Syncfusion.XlsIO;

namespace ExporteExcel
{
    class Program
    {
        public class Auto
        {
            public string Marca { get; set; }

            public string Modelo { get; set; }
            public int Ano { get; set; }

            public string Color { get; set; }
            public int Peronsas { get; set; }
            public int Cilindros { get; set; }
        }
        static void Main(string[] args)
        {
            //Lista Estatica
            List<Auto> Auto = new List<Program.Auto>()
            {
                new Auto{Marca = "Chevrolet", Modelo = "Sport", Ano = 2019, Color= "Azul", Cilindros=6, Peronsas= 4 },
                new Auto{Marca = "Chevrolet", Modelo = "Sport", Ano = 2018, Color= "Azul", Cilindros=6, Peronsas= 4 },
                new Auto{Marca = "Chevrolet", Modelo = "Sport", Ano = 2017, Color= "Azul", Cilindros=6, Peronsas= 4 }
            };
            //Inizializar Librerias
            var workbook = new XLWorkbook();
            workbook.AddWorksheet("sheetName");
            var ws = workbook.Worksheet("sheetName");
            //Recorrer el objecto
            int row = 1;
            foreach (var c in Auto)
            {
                //Escribrie en Excel en cada celda
                ws.Cell("A" + row.ToString()).Value = c.Marca;
                ws.Cell("B" + row.ToString()).Value = c.Modelo;
                ws.Cell("C" + row.ToString()).Value = c.Ano;
                ws.Cell("D" + row.ToString()).Value = c.Color;
                ws.Cell("E" + row.ToString()).Value = c.Cilindros;
                ws.Cell("F" + row.ToString()).Value = c.Peronsas;
                row++;

            }
            //Guardar Excel 
            //Ruta = Nombre_Proyecto\bin\Debug
            workbook.SaveAs("Coches.xlsx");
        }
    }
}

This problem also occurs when you have 2 resources with the same file name; say "configurations.properties" within 2 different jar or directory path configured within the classpath. For example:

You have your "configurations.properties" in your process or web application (jar, war or ear). But another dependency (jar) have the same file "configurations.properties" in the same path. Then I suppose that Spring have no idea (@_@?) where to get the property and just sends the property name declared within the @Value annotation.

The single star * unpacks the sequence/collection into positional arguments, so you can do this:

def sum(a, b):
    return a + b

values = (1, 2)

s = sum(*values)

This will unpack the tuple so that it actually executes as:

s = sum(1, 2)

The double star ** does the same, only using a dictionary and thus named arguments:

values = { 'a': 1, 'b': 2 }
s = sum(**values)

You can also combine:

def sum(a, b, c, d):
    return a + b + c + d

values1 = (1, 2)
values2 = { 'c': 10, 'd': 15 }
s = sum(*values1, **values2)

will execute as:

s = sum(1, 2, c=10, d=15)

Also see section 4.7.4 - Unpacking Argument Lists of the Python documentation.

Additionally you can define functions to take *x and **y arguments, this allows a function to accept any number of positional and/or named arguments that aren't specifically named in the declaration.

Example:

def sum(*values):
    s = 0
    for v in values:
        s = s + v
    return s

s = sum(1, 2, 3, 4, 5)

or with **:

def get_a(**values):
    return values['a']

s = get_a(a=1, b=2)      # returns 1

this can allow you to specify a large number of optional parameters without having to declare them.

And again, you can combine:

def sum(*values, **options):
    s = 0
    for i in values:
        s = s + i
    if "neg" in options:
        if options["neg"]:
            s = -s
    return s

s = sum(1, 2, 3, 4, 5)            # returns 15
s = sum(1, 2, 3, 4, 5, neg=True)  # returns -15
s = sum(1, 2, 3, 4, 5, neg=False) # returns 15

Put the query arguments in hidden input fields:

<form action="http://spufalcons.com/index.aspx">
    <input type="hidden" name="tab" value="gymnastics" />
    <input type="hidden" name="path" value="gym" />
    <input type="submit" value="SPU Gymnastics"/>
</form>

You could use Narrative JavaScript, a compiler that will transforms your code into a state machine, effectively allowing you to emulate threading. It does so by adding a "yielding" operator (notated as '->') to the language that allows you to write asynchronous code in a single, linear code block.

ISNA is the best function to use. I just did. I wanted all cells whose value was NOT in an array to conditionally format to a certain color.

=ISNA(VLOOKUP($A2,Sheet1!$A:$D,2,FALSE))

use docker top

docker top <container ID>

In regards to Gordon M's answer above, the 1st and 2nd parameter in mysqli_real_escape_string () call should be swapped for the newer php versions, according to: http://php.net/manual/en/mysqli.real-escape-string.php

• You can make this.

  CREATE PROC [dbo].[sp_DELETE_MULTI_ROW]
  @CODE XML ,@ERRFLAG CHAR(1) = '0' OUTPUT

AS

SET NOCOUNT ON
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED

DELETE tb_SampleTest WHERE CODE IN( SELECT Item.value('.', 'VARCHAR(20)') FROM @CODE.nodes('RecordList/ID') AS x(Item) )

IF @@ROWCOUNT = 0 SET @ERRFLAG = 200

SET NOCOUNT OFF

• <'RecordList'><'ID'>1<'/ID'><'ID'>2<'/ID'><'/RecordList'>

http://jsfiddle.net/T6zhj/1/

Using display table-cell/row will do the job without any width needed.

The html :

 <html>
  <div>
      <div class="row"><label>Name:</label><input type="text"></div>
      <div class="row"><label>Email Address:</label><input type = "text"></div>
      <div class="row"><label>Description of the input value:</label><input type="text"></div>
  </div>
 </html>

The Css :

label{
    display: table-cell;
    text-align: right;
}
input {
  display: table-cell;
}
div.row{
    display:table-row;
}

Django 2.1.1 The primary answer got me halfway to answering my question. It did not help me save the result to a field in my actual model. In my case I wanted a textfield that a user could enter data into, then when a save occurred the data would be processed and the result put into a field in the model and saved. While the original answer showed how to get the value from the extra field, it did not show how to save it back to the model at least in Django 2.1.1

This takes the value from an unbound custom field, processes, and saves it into my real description field:

class WidgetForm(forms.ModelForm):
    extra_field = forms.CharField(required=False)

    def processData(self, input):
        # example of error handling
        if False:
            raise forms.ValidationError('Processing failed!')

        return input + " has been processed"

    def save(self, commit=True):
        extra_field = self.cleaned_data.get('extra_field', None)

        # self.description = "my result" note that this does not work

        # Get the form instance so I can write to its fields
        instance = super(WidgetForm, self).save(commit=commit)

        # this writes the processed data to the description field
        instance.description = self.processData(extra_field)

        if commit:
            instance.save()

        return instance

    class Meta:
        model = Widget
        fields = "__all__"

This is working fine:

$('#country').val($("#country option:contains('It\'s Me')").val());

I ended up using something similar to the accepted answer, with minor modifications

(^$)|(\s+$)

Explanation by the Expresso

Select from 2 alternatives (^$)
    [1] A numbered captured group ^$
        Beginning of line ^
        End of line $
    [2] A numbered captured group (\s+$)
        Whitespace, one or more repetitions \s+
        End of line $

With very large JavaScript applications, programmers are using more encapsulation of code to avoid polluting the global scope. And to make a function available to the onClick action in an HTML element, it has to be in the global scope.

You may have seen JS files that look like this...

(function(){
    ...[some code]
}());

These are Immediately Invoked Function Expressions (IIFEs) and any function declared within them will only exist within their internal scope.

If you declare function doSomething(){} within an IIFE, then make doSomething() an element's onClick action in your HTML page, you'll get an error.

If, on the other hand, you create an eventListener for that element within that IIFE and call doSomething() when the listener detects a click event, you're good because the listener and doSomething() share the IIFE's scope.

For little web apps with a minimal amount of code, it doesn't matter. But if you aspire to write large, maintainable codebases, onclick="" is a habit that you should work to avoid.

Just thought I'd add my own explanation here - coming from a background on iOS, this is how I've internalized the two in iOS terms: "Layout Gravity" affects your position in the superview. "Gravity" affects the position of your subviews within you. Said another way, Layout Gravity positions you yourself while gravity positions your children.

There are two ways I know of

1) Console.ReadLine() at the end of the program. Disadvantage, you have to change your code and have to remember to take it out

2) Run outside of the debugger CONTROL-F5 this opens a console window outside of visual studio and that window won't close when finished. Advantage, you don't have to change your code. Disadvantage, if there is an exception, it won't drop into the debugger (however when you do get exceptions, you can simply just rerun it in the debugger)

Salvaging (and extending) the list from an old version of the Wikipedia page:

Documentation

• Primer
• Cheat Sheet
• Quick Reference

Implementations

Although the reference implementation of reStructuredText is written in Python, there are reStructuredText parsers in other languages too.

Python - Docutils

The main distribution of reStructuredText is the Python Docutils package. It contains several conversion tools:

• rst2html - from reStructuredText to HTML
• rst2xml - from reStructuredText to XML
• rst2latex - from reStructuredText to LaTeX
• rst2odt - from reStructuredText to ODF Text (word processor) document.
• rst2s5 - from reStructuredText to S5, a Simple Standards-based Slide Show System
• rst2man - from reStructuredText to Man page

Haskell - Pandoc

Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. It can read Markdown and (subsets of) reStructuredText, HTML, and LaTeX, and it can write Markdown, reStructuredText, HTML, LaTeX, ConTeXt, PDF, RTF, DocBook XML, OpenDocument XML, ODT, GNU Texinfo, MediaWiki markup, groff man pages, and S5 HTML slide shows.

There is an Pandoc online tool (POT) to try this library. Unfortunately, compared to the reStructuredText online renderer (ROR),

• POT truncates input rather more shortly. The POT user must render input in chunks that could be rendered whole by the ROR.
• POT output lacks the helpful error messages displayed by the ROR (and generated by docutils)

Java - JRst

JRst is a Java reStructuredText parser. It can currently output HTML, XHTML, DocBook xdoc and PDF, BUT seems to have serious problems: neither PDF or (X)HTML generation works using the current full download, result pages in (X)HTML are empty and PDF generation fails on IO problems with XSL files (not bundled??). Note that the original JRst has been removed from the website; a fork is found on GitHub.

Scala - Laika

Laika is a new library for transforming markup languages to other output formats. Currently it supports input from Markdown and reStructuredText and produce HTML output. The library is written in Scala but should be also usable from Java.

Perl

• Text::Restructured - Perl implementation of reStructuredText parser
• Dotiac::DTL::Addon::markup - Filters to work with common markup languages - support reStructuredText
• Pod::POM::View::Restructured - View for Pod::POM that outputs reStructuredText

PHP

• Gregwar/RST - A mature PHP5.3 parser with tests
• php-restructuredtext - A simple, incomplete (but functional) implementation

C#/.NET

• reStructuredText for ANTLR - A C# based parser with tests (in progress). It also provides the language server behind reStructuredText extension for Visual Studio Code.

Nim/C

The Nim compiler features the commands rst2htmland rst2tex which transform reStructuredText files to HTML and TeX files. The standard library provides the following modules (used by the compiler) to handle reStructuredText files programmatically:

• rst - implements a reStructuredText parser
• rstast - implements an AST for the reStructuredText parser
• rstgen - implements a generator of HTML/Latex from reStructuredText

Other 3rd party converters

Most (but not all) of these tools are based on Docutils (see above) and provide conversion to or from formats that might not be supported by the main distribution.

From reStructuredText

• restview - This pip-installable python package requires docutils, which does the actual rendering. restview's major ease-of-use feature is that, when you save changes to your document(s), it automagically re-renders and re-displays them. restview
  1. starts a small web server
  2. calls docutils to render your document(s) to HTML
  3. calls your device's browser to display the output HTML.
• rst2pdf - from reStructuredText to PDF
• rst2odp - from reStructuredText to ODF Presentation
• rst2beamer - from reStructuredText to LaTeX beamer Presentation class
• Wikir - from reStructuredText to a Google (and possibly other) Wiki formats
• rst2qhc - Convert a collection of reStructuredText files into a Qt (toolkit) Help file and (optional) a Qt Help Project file

To reStructuredText

• xml2rst is an XSLT script to convert Docutils internal XML representation (back) to reStructuredText
• Pandoc (see above) can also convert from Markdown, HTML and LaTeX to reStructuredText
• db2rst is a simple and limited DocBook to reStructuredText translator
• pod2rst - convert .pod files to reStructuredText files

Extensions

Some projects use reStructuredText as a baseline to build on, or provide extra functionality extending the utility of the reStructuredText tools.

Sphinx

The Sphinx documentation generator translates a set of reStructuredText source files into various output formats, automatically producing cross-references, indices etc.

rest2web

rest2web is a simple tool that lets you build your website from a single template (or as many as you want), and keep the contents in reStructuredText.

Pygments

Pygments is a generic syntax highlighter for general use in all kinds of software such as forum systems, Wikis or other applications that need to prettify source code. See Using Pygments in reStructuredText documents.

Free Editors

While any plain text editor is suitable to write reStructuredText documents, some editors have better support than others.

Emacs

The Emacs support via rst-mode comes as part of the Docutils package under /docutils/tools/editors/emacs/rst.el

Vim

The vim-common package for that comes with most GNU/Linux distributions has reStructuredText syntax highlight and indentation support of reStructuredText out of the box:

• reStructuredText syntax highlighting mode for vim
• VST (Vim reStructured Text) is a plugin for Vim7 with folding for reStructuredText
• Riv.vim - fresh vim plugin for authoring rst and Sphinx doc
• Previm: Vim plugin for live previewing of reStructuredText and other mark up documents

Jed

There is a rst mode for the Jed programmers editor.

gedit

gedit, the official text editor of the GNOME desktop environment. There is a gedit reStructuredText plugin.

Geany

Geany, a small and lightweight Integrated Development Environment include support for reStructuredText from version 0.12 (October 10, 2007).

Leo

Leo, an outlining editor for programmers, supports reStructuredText via rst-plugin or via "@auto-rst" nodes (it's not well-documented, but @auto-rst nodes allow editing rst files directly, parsing the structure into the Leo outline).

It also provides a way to preview the resulting HTML, in a "viewrendered" pane.

FTE

The FTE Folding Text Editor - a free (licensed under the GNU GPL) text editor for developers. FTE has a mode for reStructuredText support. It provides color highlighting of basic RSTX elements and special menu that provide easy way to insert most popular RSTX elements to a document.

PyK

PyK is a successor of PyEdit and reStInPeace, written in Python with the help of the Qt4 toolkit.

Eclipse

The Eclipse IDE with the ReST Editor plug-in provides support for editing reStructuredText files.

NoTex

NoTex is a browser based (general purpose) text editor, with integrated project management and syntax highlighting. Plus it enables to write books, reports, articles etc. using rST and convert them to LaTex, PDF or HTML. The PDF files are of high publication quality and are produced via Sphinx with the Texlive LaTex suite.

Notepad++

Notepad++ is a general purpose text editor for Windows. It has syntax highlighting for many languages built-in and support for reStructuredText via a user defined language for reStructuredText.

Visual Studio Code

Visual Studio Code is a general purpose text editor for Windows/macOS/Linux. It has syntax highlighting for many languages built-in and supports reStructuredText via an extension from LeXtudio.

Dedicated reStructuredText Editors

• ReSTedit by Dinu Gherman and Bill Bumgarner
• Rest in Peace
• Enthought Tool Suite editor
• ReText a cross platform program that works like Marked.
• RSTPad a standalone cross-platform editor with live preview

Proprietary editors

Sublime Text

Sublime Text is a completely customizable and extensible source code editor available for Windows, OS X, and Linux. Registration is required for long-term use, but all functions are available in the unregistered version, with occasional reminders to purchase a license. Versions 2 and 3 (currently in beta) support reStructuredText syntax highlighting by default, and several plugins are available through the package manager Package Control to provide snippets and code completion, additional syntax highlighting, conversion to/from RST and other formats, and HTML preview in the browser.

BBEdit / TextWrangler

BBEdit (and its free variant TextWrangler) for Mac can syntax-highlight reStructuredText using this codeless language module.

TextMate

TextMate, a proprietary general-purpose GUI text editor for Mac OS X, has a bundle for reStructuredText.

Intype

Intype is a proprietary text editor for Windows, that support reStructuredText out of the box.

E Text Editor

E is a proprietary Text Editor licensed under the "Open Company License". It supports TextMate's bundles, so it should support reStructuredText the same way TextMate does.

PyCharm

PyCharm (and other IntelliJ platform IDEs?) has ReST/Sphinx support (syntax highlighting, autocomplete and preview).)

Wiki

here are some Wiki programs that support the reStructuredText markup as the native markup syntax, or as an add-on:

MediaWiki

MediaWiki reStructuredText extension allows for reStructuredText markup in MediaWiki surrounded by <rst> and </rst>.

MoinMoin

MoinMoin is an advanced, easy to use and extensible WikiEngine with a large community of users. Said in a few words, it is about collaboration on easily editable web pages.

There is a reStructuredText Parser for MoinMoin.

Trac

Trac is an enhanced wiki and issue tracking system for software development projects. There is a reStructuredText Support in Trac.

This Wiki

This Wiki is a Webware for Python Wiki written by Ian Bicking. This wiki uses ReStructuredText for its markup.

rstiki

rstiki is a minimalist single-file personal wiki using reStructuredText syntax (via docutils) inspired by pwyky. It does not support authorship indication, versioning, hierarchy, chrome/framing/templating or styling. It leverages docutils/reStructuredText as the wiki syntax. As such, it's under 200 lines of code, and in a single file. You put it in a directory and it runs.

ikiwiki

Ikiwiki is a wiki compiler. It converts wiki pages into HTML pages suitable for publishing on a website. Ikiwiki stores pages and history in a revision control system such as Subversion or Git. There are many other features, including support for blogging, as well as a large array of plugins. It's reStructuredText plugin, however is somewhat limited and is not recommended as its' main markup language at this time.

Web Services

Sandbox

An Online reStructuredText editor can be used to play with the markup and see the results immediately.

Blogging frameworks

WordPress

WordPreSt reStructuredText plugin for WordPress. (PHP)

Zine

reStructuredText parser plugin for Zine (will become obsolete in version 0.2 when Zine is scheduled to get a native reStructuredText support). Zine is discontinued. (Python)

pelican

Pelican is a static blog generator that supports writing articles in ReST. (Python)

hyde

Hyde is a static website generator that supports ReST. (Python)

Acrylamid

Acrylamid is a static blog generator that supports writing articles in ReST. (Python)

Nikola

Nikola is a Static Site and Blog Generator that supports ReST. (Python)

ipsum genera

Ipsum genera is a static blog generator written in Nim.

Yozuch

Yozuch is a static blog generator written in Python.

More

• Voidspace: ReStructuredText Tools blog post.
• reStructuredText wiki post to the text.docutils.user mailing list.
• IBM's Developer Works XML Matters: reStructuredText article.
• MZlinux » Marc Links and Tips » Networking » World Wide Web » Wikis » Structured text formatters

This appears to be a variable naming convention in Node.js control-flow code, where a reference to the next function to execute is given to a callback for it to kick-off when it's done.

See, for example, the code samples here:

• http://blog.mixu.net/2011/02/02/essential-node-js-patterns-and-snippets/

Let's look at the example you posted:

function loadUser(req, res, next) {
  if (req.session.user_id) {
    User.findById(req.session.user_id, function(user) {
      if (user) {
        req.currentUser = user;
        return next();
      } else {
        res.redirect('/sessions/new');
      }
    });
  } else {
    res.redirect('/sessions/new');
  }
}

app.get('/documents.:format?', loadUser, function(req, res) {
  // ...
});

The loadUser function expects a function in its third argument, which is bound to the name next. This is a normal function parameter. It holds a reference to the next action to perform and is called once loadUser is done (unless a user could not be found).

There's nothing special about the name next in this example; we could have named it anything.

You can create dropdown title | label with selected, hidden and style for old or unsupported device.

<select name="city" >
<option selected hidden style="display:none">What is your city</option>
   <option value="1">Sydney</option>
   <option value="2">Melbourne</option>
   <option value="3">Cromwell</option>
   <option value="4">Queenstown</option>
</select>

You have a certificate which is self-signed, so it's non-trusted by default, that's why OpenSSL complains. This warning is actually a good thing, because this scenario might also rise due to a man-in-the-middle attack.

To solve this, you'll need to install it as a trusted server. If it's signed by a non-trusted CA, you'll have to install that CA's certificate as well.

Have a look at this link about installing self-signed certificates.

I think the better way to go is to put switch to named functions (Check this overflow for more on that subject). That way you can call them from a single event.

Like so:

function firstFunction() {
    console.log("first");
}

function secondFunction() {
    console.log("second");
}


function thirdFunction() {
    console.log("third");
}

That way you can load them in a single ready function.

jQuery(document).on('ready', function(){
   firstFunction();
   secondFunction();
   thirdFunction();

});

This will output the following to your console.log:

first
second
third

This way you can reuse the functions for other events.

jQuery(window).on('resize',function(){
    secondFunction();
});

Check this fiddle for working version

For iPhone it works if you add also playsinline so:

<video width="320" height="240" autoplay loop muted playsinline>
  <source src="movie.mp4" type="video/mp4" />
</video>

I tried this and it works without any issues to validate if the field is empty. I have answered your question partially as I haven't personally tried to add default values to attributes

if(field.getText()!= null && !field.getText().isEmpty())

Hope it helps

In Pandas version 0.13 and greater the index level names are immutable (type FrozenList) and can no longer be set directly. You must first use Index.rename() to apply the new index level names to the Index and then use DataFrame.reindex() to apply the new index to the DataFrame. Examples:

For Pandas version < 0.13

df.index.names = ['Date']

For Pandas version >= 0.13

df = df.reindex(df.index.rename(['Date']))

In OSX with git v2.6.4, I just run git stash drop accidentally, then I found it by going trough below steps

If you know name of the stash then use:

$ git fsck --unreachable | grep commit | cut -c 20- | xargs git show | grep -B 6 -A 2 <name of the stash>

otherwise you will find ID from the result by manually with:

$ git fsck --unreachable | grep commit | cut -c 20- | xargs git show

Then when you find the commit-id just hit the git stash apply {commit-id}

Hope this helps someone quickly

This is the way I upload the file and save it into database and public folder and also the method I delete file from database and public folder.
this may help you and student to get complete source code to get the task done.

uploading file
at the first if you save file into database by giving path public_path() once it not need to used in delete method again

public function store_file(Request $request)
{
   if($request->hasFile('file'))
   {
      $fileExtention = $request->file('file')->getClientOriginalExtension();
      $name = time().rand(999,9999).$request->filename.'.'.$fileExtention;
      $filePath = $request->file('file')->move(public_path().'/videos',$name);
      $video = new Video_Model;
      $video->file_path = $filePath;
      $video->filename = $request->filename;
      $video->save();
   }
   return redirect()->back();
} 

deleting file
from database and public folder as you saved

public function delete_file(Request $request)
{
   $file = Video_Model::find($request->id);
   $file_path = $file->file_path;
   if(file_exists($file_path))
   {
      unlink($file_path);
      Video_Model::destroy($request->id);
   }
   return redirect()->back();
}

From a module:

UserFormName.UserForm_Initialize

Just make sure that in your userform, you update the sub like so:

Public Sub UserForm_Initialize() so it can be called from outside the form.

Alternately, if the Userform hasn't been loaded:

UserFormName.Show will end up calling UserForm_Initialize because it loads the form.

Dictionary is probably the closest. System.Collections.Generic.Dictionary implements the System.Collections.Generic.IDictionary interface (which is similar to Java's Map interface).

Some notable differences that you should be aware of:

• Adding/Getting items
  • Java's HashMap has the put and get methods for setting/getting items
    • myMap.put(key, value)
    • MyObject value = myMap.get(key)
  • C#'s Dictionary uses [] indexing for setting/getting items
    • myDictionary[key] = value
    • MyObject value = myDictionary[key]
• null keys
  • Java's HashMap allows null keys
  • .NET's Dictionary throws an ArgumentNullException if you try to add a null key
• Adding a duplicate key
  • Java's HashMap will replace the existing value with the new one.
  • .NET's Dictionary will replace the existing value with the new one if you use [] indexing. If you use the Add method, it will instead throw an ArgumentException.
• Attempting to get a non-existent key
  • Java's HashMap will return null.
  • .NET's Dictionary will throw a KeyNotFoundException. You can use the TryGetValue method instead of the [] indexing to avoid this:
    MyObject value = null; if (!myDictionary.TryGetValue(key, out value)) { /* key doesn't exist */ }

Dictionary's has a ContainsKey method that can help deal with the previous two problems.

Not every List implementation supports the add() method.

One common example is the List returned by Arrays.asList(): it is documented not to support any structural modification (i.e. removing or adding elements) (emphasis mine):

Returns a fixed-size list backed by the specified array.

Even if that's not the specific List you're trying to modify, the answer still applies to other List implementations that are either immutable or only allow some selected changes.

You can find out about this by reading the documentation of UnsupportedOperationException and List.add(), which documents this to be an "(optional operation)". The precise meaning of this phrase is explained at the top of the List documentation.

As a workaround you can create a copy of the list to a known-modifiable implementation like ArrayList:

seeAlso = new ArrayList<>(seeAlso);

1. exec is not an expression: a statement in Python 2.x, and a function in Python 3.x. It compiles and immediately evaluates a statement or set of statement contained in a string. Example:

    exec('print(5)')           # prints 5.
    # exec 'print 5'     if you use Python 2.x, nor the exec neither the print is a function there
    exec('print(5)\nprint(6)')  # prints 5{newline}6.
    exec('if True: print(6)')  # prints 6.
    exec('5')                 # does nothing and returns nothing.
   

2. eval is a built-in function (not a statement), which evaluates an expression and returns the value that expression produces. Example:

    x = eval('5')              # x <- 5
    x = eval('%d + 6' % x)     # x <- 11
    x = eval('abs(%d)' % -100) # x <- 100
    x = eval('x = 5')          # INVALID; assignment is not an expression.
    x = eval('if 1: x = 4')    # INVALID; if is a statement, not an expression.
   

3. compile is a lower level version of exec and eval. It does not execute or evaluate your statements or expressions, but returns a code object that can do it. The modes are as follows:

4. compile(string, '', 'eval') returns the code object that would have been executed had you done eval(string). Note that you cannot use statements in this mode; only a (single) expression is valid.

5. compile(string, '', 'exec') returns the code object that would have been executed had you done exec(string). You can use any number of statements here.

6. compile(string, '', 'single') is like the exec mode but expects exactly one expression/statement, eg compile('a=1 if 1 else 3', 'myf', mode='single')

The answers here do an excellent job in defining both monoids and monads, however, they still don't seem to answer the question:

And on a less important note, is this true and if so could you give an explanation (hopefully one that can be understood by someone who doesn't have much Haskell experience)?

The crux of the matter that is missing here, is the different notion of "monoid", the so-called categorification more precisely -- the one of monoid in a monoidal category. Sadly Mac Lane's book itself makes it very confusing:

All told, a monad in X is just a monoid in the category of endofunctors of X, with product × replaced by composition of endofunctors and unit set by the identity endofunctor.

Main confusion

Why is this confusing? Because it does not define what is "monoid in the category of endofunctors" of X. Instead, this sentence suggests taking a monoid inside the set of all endofunctors together with the functor composition as binary operation and the identity functor as a monoidal unit. Which works perfectly fine and turns into a monoid any subset of endofunctors that contains the identity functor and is closed under functor composition.

Yet this is not the correct interpretation, which the book fails to make clear at that stage. A Monad f is a fixed endofunctor, not a subset of endofunctors closed under composition. A common construction is to use f to generate a monoid by taking the set of all k-fold compositions f^k = f(f(...)) of f with itself, including k=0 that corresponds to the identity f^0 = id. And now the set S of all these powers for all k>=0 is indeed a monoid "with product × replaced by composition of endofunctors and unit set by the identity endofunctor".

And yet:

• This monoid S can be defined for any functor f or even literally for any self-map of X. It is the monoid generated by f.
• The monoidal structure of S given by the functor composition and the identity functor has nothing do with f being or not being a monad.

And to make things more confusing, the definition of "monoid in monoidal category" comes later in the book as you can see from the table of contents. And yet understanding this notion is absolutely critical to understanding the connection with monads.

(Strict) monoidal categories

Going to Chapter VII on Monoids (which comes later than Chapter VI on Monads), we find the definition of the so-called strict monoidal category as triple (B, *, e), where B is a category, *: B x B-> B a bifunctor (functor with respect to each component with other component fixed) and e is a unit object in B, satisfying the associativity and unit laws:

(a * b) * c = a * (b * c)
a * e = e * a = a

for any objects a,b,c of B, and the same identities for any morphisms a,b,c with e replaced by id_e, the identity morphism of e. It is now instructive to observe that in our case of interest, where B is the category of endofunctors of X with natural transformations as morphisms, * the functor composition and e the identity functor, all these laws are satisfied, as can be directly verified.

What comes after in the book is the definition of the "relaxed" monoidal category, where the laws only hold modulo some fixed natural transformations satisfying so-called coherence relations, which is however not important for our cases of the endofunctor categories.

Monoids in monoidal categories

Finally, in section 3 "Monoids" of Chapter VII, the actual definition is given:

A monoid c in a monoidal category (B, *, e) is an object of B with two arrows (morphisms)

mu: c * c -> c
nu: e -> c

making 3 diagrams commutative. Recall that in our case, these are morphisms in the category of endofunctors, which are natural transformations corresponding to precisely join and return for a monad. The connection becomes even clearer when we make the composition * more explicit, replacing c * c by c^2, where c is our monad.

Finally, notice that the 3 commutative diagrams (in the definition of a monoid in monoidal category) are written for general (non-strict) monoidal categories, while in our case all natural transformations arising as part of the monoidal category are actually identities. That will make the diagrams exactly the same as the ones in the definition of a monad, making the correspondence complete.

Conclusion

In summary, any monad is by definition an endofunctor, hence an object in the category of endofunctors, where the monadic join and return operators satisfy the definition of a monoid in that particular (strict) monoidal category. Vice versa, any monoid in the monoidal category of endofunctors is by definition a triple (c, mu, nu) consisting of an object and two arrows, e.g. natural transformations in our case, satisfying the same laws as a monad.

Finally, note the key difference between the (classical) monoids and the more general monoids in monoidal categories. The two arrows mu and nu above are not anymore a binary operation and a unit in a set. Instead, you have one fixed endofunctor c. The functor composition * and the identity functor alone do not provide the complete structure needed for the monad, despite that confusing remark in the book.

Another approach would be to compare with the standard monoid C of all self-maps of a set A, where the binary operation is the composition, that can be seen to map the standard cartesian product C x C into C. Passing to the categorified monoid, we are replacing the cartesian product x with the functor composition *, and the binary operation gets replaced with the natural transformation mu from c * c to c, that is a collection of the join operators

join: c(c(T))->c(T)

for every object T (type in programming). And the identity elements in classical monoids, which can be identified with images of maps from a fixed one-point-set, get replaced with the collection of the return operators

return: T->c(T) 

But now there are no more cartesian products, so no pairs of elements and thus no binary operations.

You have to patch catalina.jar, as this is version number the WTP adapter looks at. It's a quite useless check, and the adapter should allow you to start the server anyway, but nobody has though of that yet.

For years and with every version of Tomcat this is always a problem.

To patch you can do the following:

• cd [tomcat or tomee home]/lib
• mkdir catalina
• cd catalina/
• unzip ../catalina.jar
• vim org/apache/catalina/util/ServerInfo.properties

Make sure it looks like the following (the version numbers all need to start with 8.0):

server.info=Apache Tomcat/8.0.0
server.number=8.0.0
server.built=May 11 2016 21:49:07 UTC

Then:

• jar uf ../catalina.jar org/apache/catalina/util/ServerInfo.properties
• cd ..
• rm -rf catalina

>>> txt = '<a class="title" href="http://rads.stackoverflow.com/amzn/click/B0073HSK0K">Nikon COOLPIX L26 16.1 MP Digital Camera with 5x Zoom NIKKOR Glass Lens and 3-inch LCD (Red)</a> '
>>> fragment = bs4.BeautifulSoup(txt)
>>> fragment
<a class="title" href="http://rads.stackoverflow.com/amzn/click/B0073HSK0K">Nikon COOLPIX L26 16.1 MP Digital Camera with 5x Zoom NIKKOR Glass Lens and 3-inch LCD (Red)</a> 
>>> fragment.find('a', {'class': 'title'})
<a class="title" href="http://rads.stackoverflow.com/amzn/click/B0073HSK0K">Nikon COOLPIX L26 16.1 MP Digital Camera with 5x Zoom NIKKOR Glass Lens and 3-inch LCD (Red)</a>
>>> fragment.find('a', {'class': 'title'}).string
u'Nikon COOLPIX L26 16.1 MP Digital Camera with 5x Zoom NIKKOR Glass Lens and 3-inch LCD (Red)'

You can simply use

// When the user scrolls down 20px from the top of the document, show the button_x000D_
window.onscroll = function() {scrollFunction()};_x000D_
_x000D_
function scrollFunction() {_x000D_
    if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {_x000D_
        document.getElementById("gotoTop").style.display = "block";_x000D_
    } else {_x000D_
        document.getElementById("gotoTop").style.display = "none";_x000D_
    }_x000D_
   _x000D_
}_x000D_
_x000D_
// When the user clicks on the button, scroll to the top of the document_x000D_
function topFunction() {_x000D_
 _x000D_
     $('html, body').animate({scrollTop:0}, 'slow');_x000D_
}

body {_x000D_
  font-family: Arial, Helvetica, sans-serif;_x000D_
  font-size: 20px;_x000D_
}_x000D_
_x000D_
#gotoTop {_x000D_
  display: none;_x000D_
  position: fixed;_x000D_
  bottom: 20px;_x000D_
  right: 30px;_x000D_
  z-index: 99;_x000D_
  font-size: 18px;_x000D_
  border: none;_x000D_
  outline: none;_x000D_
  background-color: red;_x000D_
  color: white;_x000D_
  cursor: pointer;_x000D_
  padding: 15px;_x000D_
  border-radius: 4px;_x000D_
}_x000D_
_x000D_
#gotoTop:hover {_x000D_
  background-color: #555;_x000D_
}

<script src="https://code.jquery.com/jquery-1.10.2.js"></script>_x000D_
_x000D_
<button onclick="topFunction()" id="gotoTop" title="Go to top">Top</button>_x000D_
_x000D_
<div style="background-color:black;color:white;padding:30px">Scroll Down</div>_x000D_
<div style="background-color:lightgrey;padding:30px 30px 2500px">This example demonstrates how to create a "scroll to top" button that becomes visible when the user starts to scroll the page.</div>

Just solved this problem. In my case it was domain controller is not accessible, because both dns servers was google dns.

I just add to checklist for this problem:

• check domain controller is accessible

Basically, you need two jobs. One to check whether files changed and one to do the actual build:

Job #1

This should be triggered on changes in your Git repository. It then tests whether the path you specify ("src" here) has changes and then uses Jenkins' CLI to trigger a second job.

export JENKINS_CLI="java -jar /var/run/jenkins/war/WEB-INF/jenkins-cli.jar"
export JENKINS_URL=http://localhost:8080/
export GIT_REVISION=`git rev-parse HEAD`
export STATUSFILE=$WORKSPACE/status_$BUILD_ID.txt

# Figure out, whether "src" has changed in the last commit
git diff-tree --name-only HEAD | grep src

# Exit with success if it didn't
$? || exit 0

# Trigger second job
$JENKINS_CLI build job2 -p GIT_REVISION=$GIT_REVISION -s

Job #2

Configure this job to take a parameter GIT_REVISION like so, to make sure you're building exactly the revision the first job chose to build.

NGINX supports WebSockets by allowing a tunnel to be setup between a client and a backend server. In order for NGINX to send the Upgrade request from the client to the backend server, Upgrade and Connection headers must be set explicitly. For example:

# WebSocket proxying
map $http_upgrade $connection_upgrade {
    default         upgrade;
    ''              close;
}


server {
    listen 80;

    # The host name to respond to
    server_name cdn.domain.com;

    location / {
        # Backend nodejs server
        proxy_pass          http://127.0.0.1:8080;
        proxy_http_version  1.1;
        proxy_set_header    Upgrade     $http_upgrade;
        proxy_set_header    Connection  $connection_upgrade;
    }
}

Source: http://nginx.com/blog/websocket-nginx/

Beware that -prune does not prevent descending into any directory as some have said. It prevents descending into directories that match the test it's applied to. Perhaps some examples will help (see the bottom for a regex example). Sorry for this being so lengthy.

$ find . -printf "%y %p\n"    # print the file type the first time FYI
d .
f ./test
d ./dir1
d ./dir1/test
f ./dir1/test/file
f ./dir1/test/test
d ./dir1/scripts
f ./dir1/scripts/myscript.pl
f ./dir1/scripts/myscript.sh
f ./dir1/scripts/myscript.py
d ./dir2
d ./dir2/test
f ./dir2/test/file
f ./dir2/test/myscript.pl
f ./dir2/test/myscript.sh

$ find . -name test
./test
./dir1/test
./dir1/test/test
./dir2/test

$ find . -prune
.

$ find . -name test -prune
./test
./dir1/test
./dir2/test

$ find . -name test -prune -o -print
.
./dir1
./dir1/scripts
./dir1/scripts/myscript.pl
./dir1/scripts/myscript.sh
./dir1/scripts/myscript.py
./dir2

$ find . -regex ".*/my.*p.$"
./dir1/scripts/myscript.pl
./dir1/scripts/myscript.py
./dir2/test/myscript.pl

$ find . -name test -prune -regex ".*/my.*p.$"
(no results)

$ find . -name test -prune -o -regex ".*/my.*p.$"
./test
./dir1/test
./dir1/scripts/myscript.pl
./dir1/scripts/myscript.py
./dir2/test

$ find . -regex ".*/my.*p.$" -a -not -regex ".*test.*"
./dir1/scripts/myscript.pl
./dir1/scripts/myscript.py

$ find . -not -regex ".*test.*"                   .
./dir1
./dir1/scripts
./dir1/scripts/myscript.pl
./dir1/scripts/myscript.sh
./dir1/scripts/myscript.py
./dir2

I have recently started using 0xED, and like it a lot.

You can view the INDEXES column below where you find a default PRIMARY KEY is set. If it is not set or you want to set any other variable as a PRIMARY KEY then , there is a dialog box below to create an index which asks for a column number ,either way you can create a new one or edit an existing one.The existing one shows up a edit button whee you can go and edit it and you're done save it and you are ready to go

As suggested in other answers it's probably easiest to "POST" the form data to the controller. If you need to pass an entire Model/Form you can easily do this with serialize() e.g.

$('#myform').on('submit', function(e){
    e.preventDefault();

    var formData = $(this).serialize();

    $.post('/student/update', formData, function(response){
         //Do something with response
    });
});

So your controller could have a view model as the param e.g.

 [HttpPost]
 public JsonResult Update(StudentViewModel studentViewModel)
 {}

Alternatively if you just want to post some specific values you can do:

$('#myform').on('submit', function(e){
    e.preventDefault();

    var studentId = $(this).find('#Student_StudentId');
    var isActive = $(this).find('#Student_IsActive');

    $.post('/my/url', {studentId : studentId, isActive : isActive}, function(response){
         //Do something with response
    });
});

With a controller like:

     [HttpPost]
     public JsonResult Update(int studentId, bool isActive)
     {}

You can use a datetime field and set it's default value to GetDate().

CREATE TABLE [dbo].[Test](
    [TimeStamp] [datetime] NOT NULL CONSTRAINT [DF_Test_TimeStamp] DEFAULT (GetDate()),
    [Foo] [varchar](50) NOT NULL
) ON [PRIMARY]

The browser is preventing you from cross-site scripting.

If the url is outside of your domain, then you need to do this on the server side or move it into your domain.

Based on Ray Nicholus's answer :

inputElement.onchange = function(event) {
   var fileList = inputElement.files;
   //TODO do something with fileList.  
}

using this will also work :

inputElement.onchange = function(event) {
   var fileList = event.target.files;
   //TODO do something with fileList.  
}

In case it might help someone, I had a similar issue after adding Bootstrap 3 to my MVC 4 project. It turned out my problem was that I was referring to bootstrap-min.js instead of bootstrap.js in my BundleConfig.cs.

Didn't work:

bundles.Add(new ScriptBundle("~/bundles/bootstrap").Include(
                            "~/Scripts/bootstrap-min.js"));

Worked:

bundles.Add(new ScriptBundle("~/bundles/bootstrap").Include(
                        "~/Scripts/bootstrap.js"));

1. Edit POM.xml

Add the following property in pom.xml. Make sure you use the fully qualified class name (i.e. with package name) which contains the main method:

<properties>
        <exec.mainClass>fully-qualified-class-name</exec.mainClass>
</properties>

2. Run Command

Now from the terminal, trigger the following command:

mvn clean compile exec:java

NOTE You can pass further arguments via -Dexec.args="xxx" flag.

Excerpt from the Java API for addAll(collection c) in Interface List see here

"Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation)."

You you will have as much object as you have in both lists - the number of objects in your first list plus the number of objects you have in your second list - in your case 100.