The problem is that t.join() blocks the click event, the main thread does not get back to the event loop to process repaints. See Why ttk Progressbar appears after process in Tkinter or TTK progress bar blocked when sending email

Both of these two top-rated answers are wrong. Check out the MDN description on the concurrency model and the event loop, and it should become clear what's going on (that MDN resource is a real gem). And simply using setTimeout can be adding unexpected problems in your code in addition to "solving" this little problem.

What's actually going on here is not that "the browser might not be quite ready yet because concurrency," or something based on "each line is an event that gets added to the back of the queue".

The jsfiddle provided by DVK indeed illustrates a problem, but his explanation for it isn't correct.

What's happening in his code is that he's first attaching an event handler to the click event on the #do button.

Then, when you actually click the button, a message is created referencing the event handler function, which gets added to the message queue. When the event loop reaches this message, it creates a frame on the stack, with the function call to the click event handler in the jsfiddle.

And this is where it gets interesting. We're so used to thinking of Javascript as being asynchronous that we're prone to overlook this tiny fact: Any frame has to be executed, in full, before the next frame can be executed. No concurrency, people.

What does this mean? It means that whenever a function is invoked from the message queue, it blocks the queue until the stack it generates has been emptied. Or, in more general terms, it blocks until the function has returned. And it blocks everything, including DOM rendering operations, scrolling, and whatnot. If you want confirmation, just try to increase the duration of the long running operation in the fiddle (e.g. run the outer loop 10 more times), and you'll notice that while it runs, you cannot scroll the page. If it runs long enough, your browser will ask you if you want to kill the process, because it's making the page unresponsive. The frame is being executed, and the event loop and message queue are stuck until it finishes.

So why this side-effect of the text not updating? Because while you have changed the value of the element in the DOM — you can console.log() its value immediately after changing it and see that it has been changed (which shows why DVK's explanation isn't correct) — the browser is waiting for the stack to deplete (the on handler function to return) and thus the message to finish, so that it can eventually get around to executing the message that has been added by the runtime as a reaction to our mutation operation, and in order to reflect that mutation in the UI.

This is because we are actually waiting for code to finish running. We haven't said "someone fetch this and then call this function with the results, thanks, and now I'm done so imma return, do whatever now," like we usually do with our event-based asynchronous Javascript. We enter a click event handler function, we update a DOM element, we call another function, the other function works for a long time and then returns, we then update the same DOM element, and then we return from the initial function, effectively emptying the stack. And then the browser can get to the next message in the queue, which might very well be a message generated by us by triggering some internal "on-DOM-mutation" type event.

The browser UI cannot (or chooses not to) update the UI until the currently executing frame has completed (the function has returned). Personally, I think this is rather by design than restriction.

Why does the setTimeout thing work then? It does so, because it effectively removes the call to the long-running function from its own frame, scheduling it to be executed later in the window context, so that it itself can return immediately and allow the message queue to process other messages. And the idea is that the UI "on update" message that has been triggered by us in Javascript when changing the text in the DOM is now ahead of the message queued for the long-running function, so that the UI update happens before we block for a long time.

Note that a) The long-running function still blocks everything when it runs, and b) you're not guaranteed that the UI update is actually ahead of it in the message queue. On my June 2018 Chrome browser, a value of 0 does not "fix" the problem the fiddle demonstrates — 10 does. I'm actually a bit stifled by this, because it seems logical to me that the UI update message should be queued up before it, since its trigger is executed before scheduling the long-running function to be run "later". But perhaps there're some optimisations in the V8 engine that may interfere, or maybe my understanding is just lacking.

Okay, so what's the problem with using setTimeout, and what's a better solution for this particular case?

First off, the problem with using setTimeout on any event handler like this, to try to alleviate another problem, is prone to mess with other code. Here's a real-life example from my work:

A colleague, in a mis-informed understanding on the event loop, tried to "thread" Javascript by having some template rendering code use setTimeout 0 for its rendering. He's no longer here to ask, but I can presume that perhaps he inserted timers to gauge the rendering speed (which would be the return immediacy of functions) and found that using this approach would make for blisteringly fast responses from that function.

First problem is obvious; you cannot thread javascript, so you win nothing here while you add obfuscation. Secondly, you have now effectively detached the rendering of a template from the stack of possible event listeners that might expect that very template to have been rendered, while it may very well not have been. The actual behaviour of that function was now non-deterministic, as was — unknowingly so — any function that would run it, or depend on it. You can make educated guesses, but you cannot properly code for its behaviour.

The "fix" when writing a new event handler that depended on its logic was to also use setTimeout 0. But, that's not a fix, it is hard to understand, and it is no fun to debug errors that are caused by code like this. Sometimes there's no problem ever, other times it concistently fails, and then again, sometimes it works and breaks sporadically, depending on the current performance of the platform and whatever else happens to going on at the time. This is why I personally would advise against using this hack (it is a hack, and we should all know that it is), unless you really know what you're doing and what the consequences are.

But what can we do instead? Well, as the referenced MDN article suggests, either split the work into multiple messages (if you can) so that other messages that are queued up may be interleaved with your work and executed while it runs, or use a web worker, which can run in tandem with your page and return results when done with its calculations.

Oh, and if you're thinking, "Well, couldn't I just put a callback in the long-running function to make it asynchronous?," then no. The callback doesn't make it asynchronous, it'll still have to run the long-running code before explicitly calling your callback.

One of the possible way to get result as below , hope this will help.

declare @start int
declare @end int
SET @start = '5000';  -- 0 , 5000 ,
SET @end = '10000'; -- 5001, 10001
SELECT * FROM ( 
  SELECT TABLE_NAME,TABLE_TYPE, ROW_NUMBER() OVER (ORDER BY TABLE_NAME) as row FROM information_schema.tables
 ) a WHERE a.row > @start and a.row <= @end

For me the solution was to upgrade the gradle version to 6.3 from the android project structure (java 14.0.1 is already installed on my pc).

If using Git's version of ssh on windows, the identity file line in the ssh config looks like

IdentityFile /c/Users/Whoever/.ssh/id_rsa.alice

where /c is for c:

To check, in git's bash do

cd ~/.ssh
pwd 

When I use Junit4, import junit.framework.Assert; import junit.framework.TestCase; the warning info is :The type of Assert is deprecated

when import like this: import org.junit.Assert; import org.junit.Test; the warning has disappeared

possible duplicate of differences between 2 JUnit Assert classes

class Background implements Runnable {
    private CountDownLatch latch = new CountDownLatch(1);
    private  Handler handler;

    Background() {
        Thread thread = new Thread(this);
        thread.start();
        try {
            latch.await();
        } catch (InterruptedException e) {
           /// e.printStackTrace();
        }
    }

    @Override
    public void run() {
        Looper.prepare();
        handler = new Handler();
        latch.countDown();
        Looper.loop();
    }

    public Handler getHandler() {
        return handler;
    }
}

If you want to use the --prefix or -p arguments, but want to avoid having to use the environment's full path to activate it, you need to edit the .condarc config file before you create the environment.

The .condarc file is in the home directory; C:\Users\<user> on Windows. Edit the values under the envs_dirs key to include the custom path for your environment. Assuming the custom path is D:\envs, the file should end up looking something like this:

ssl_verify: true
channels:
  - defaults
envs_dirs:
  - C:\Users\<user>\Anaconda3\envs
  - D:\envs

Then, when you create a new environment on that path, its name will appear along with the path when you run conda env list, and you should be able to activate it using only the name, and not the full path.

Command line screenshot

In summary, if you edit .condarc to include D:\envs, and then run conda env create -p D:\envs\myenv python=x.x, then activate myenv (or source activate myenv on Linux) should work.

Hope that helps!

P.S. I stumbled upon this through trial and error. I think what happens is when you edit the envs_dirs key, conda updates ~\.conda\environments.txt to include the environments found in all the directories specified under the envs_dirs, so they can be accessed without using absolute paths.

As people already mentioned, it could be internet problems or proxy configuration.
I found this question when I was searching about the same problem. In my case, it was proxy configuration.
Answers posted here didn't solve my issue, because every link suggest a configuration that shows the username and passoword and I can't use it.
I was searching about it elsewere and I found a configuration to be made on settings.xml, I needed to make some changes. Here is the final code:

<profiles>
    <profile>
       <id>MavenRepository</id>
           <repositories>
            <repository>
                <id>central</id>
                <url>https://repo1.maven.org/maven2</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
                <releases>
                    <enabled>true</enabled>
                </releases>
            </repository>
        </repositories>
    </profile>
</profiles>

<activeProfiles>
    <activeProfile>MavenRepository</activeProfile>
</activeProfiles>

I hope be useful.

Andrea is correct. we can do it using command line.

And we still can program it, by

ZkClient zkClient = new ZkClient("localhost:2181", 10000);
zkClient.deleteRecursive(ZkUtils.getTopicPath("test2"));

Actually I do not recommend you delete topic on Kafka 0.8.1.1. I can delete this topic by this method, but if you check log for zookeeper, deletion mess it up.

Given the use of List, there's no way to "lookup" a value without iterating through it...

For example...

Cave cave = new Cave();

// Loop adds several Parties to the cave's party list
cave.parties.add(new Party("FirstParty")); // all anonymously added
cave.parties.add(new Party("SecondParty"));
cave.parties.add(new Party("ThirdParty"));

for (Party p : cave.parties) {
    if (p.name.equals("SecondParty") {
        p.index = ...;
        break;
    }
}

Now, this will take time. If the element you are looking for is at the end of the list, you will have to iterate to the end of the list before you find a match.

It might be better to use a Map of some kind...

So, if we update Cave to look like...

class Cave {
    Map<String, Party> parties = new HashMap<String, Party>(25);
}

We could do something like...

Cave cave = new Cave();

// Loop adds several Parties to the cave's party list
cave.parties.put("FirstParty", new Party("FirstParty")); // all anonymously added
cave.parties.put("SecondParty", new Party("SecondParty"));
cave.parties.put("ThirdParty", new Party("ThirdParty"));

if (cave.parties.containsKey("SecondParty")) {
    cave.parties.get("SecondParty").index = ...
}

Instead...

Ultimately, this will all depend on what it is you want to achieve...

static ArrayList< Drawable>  d;
d = new ArrayList<Drawable>();
for(int i=0;i<MainActivity.FilePathStrings1.size();i++) {
  myDrawable =  Drawable.createFromPath(MainActivity.FilePathStrings1.get(i));
  d.add(myDrawable);
}

EXPECT is a great program to use.

On Ubuntu install it with:

sudo apt-get install expect

On a CentOS Machine install it with:

yum install expect

Lets say you want to make a connection to a sftp server and then upload a local file from your local machine to the remote sftp server

#!/usr/bin/expect

spawn sftp [email protected]
expect "password:"
send "yourpasswordhere\n"
expect "sftp>"
send "cd logdirectory\n"
expect "sftp>"
send "put /var/log/file.log\n"
expect "sftp>"
send "exit\n"
interact

This opens a sftp connection with your password to the server.

Then it goes to the directory where you want to upload your file, in this case "logdirectory"

This uploads a log file from the local directory found at /var/log/ with the files name being file.log to the "logdirectory" on the remote server

I had the same problem, but non of the asweres worked for me. I am using bootstap and the following css code helped me:

label {
 display: contents!important;
}

With an extension method, you can accomplish this:

public static class Extension
{
    public static string ToStringOrEmpty(this Object value)
    {
        return value == null ? "" : value.ToString();
    }
}

The following would write nothing to the screen and would not thrown an exception:

        string value = null;

        Console.WriteLine(value.ToStringOrEmpty());

Using a nested .each() means that your inner loop is doing one td at a time, so you can't set the productId and product and quantity all in the inner loop.

Also using function(key, val) and then val[key].innerHTML isn't right: the .each() method passes the index (an integer) and the actual element, so you'd use function(i, element) and then element.innerHTML. Though jQuery also sets this to the element, so you can just say this.innerHTML.

Anyway, here's a way to get it to work:

    table.find('tr').each(function (i, el) {
        var $tds = $(this).find('td'),
            productId = $tds.eq(0).text(),
            product = $tds.eq(1).text(),
            Quantity = $tds.eq(2).text();
        // do something with productId, product, Quantity
    });

Demo: http://jsfiddle.net/bqX7Q/

Use the modulus operator %, it returns the remainder.

int a = 5;
int b = 3;

if (a % b != 0) {
   printf("The remainder is: %i", a%b);
}

In C++, structs do not have a comparison operator generated by default. You need to write your own:

bool operator==(const MyStruct1& lhs, const MyStruct1& rhs)
{
    return /* your comparison code goes here */
}

An elegant method would be to use the ~= compatible release operator according to PEP 440. In your case this would amount to:

package~=0.5.0

As an example, if the following versions exist, it would choose 0.5.9:

• 0.5.0
• 0.5.9
• 0.6.0

For clarification, each pair is equivalent:

~= 0.5.0
>= 0.5.0, == 0.5.*

~= 0.5
>= 0.5, == 0.*

finishAffinity() added in API 16. Use ActivityCompat.finishAffinity() in previous versions. When you will launch any activity using intent and finish the current activity. Now use ActivityCompat.finishAffinity() instead finish(). it will finish all stacked activity below current activity. It works fine for me.

In Firefox, just ctrl-a (select everything on the screen) then right click "View Selection Source". This captures any changes made by JavaScript to the DOM.

/* Working method */_x000D_
.tinted-image {_x000D_
  background: _x000D_
    /* top, transparent red, faked with gradient */ _x000D_
    linear-gradient(_x000D_
      rgba(255, 0, 0, 0.45), _x000D_
      rgba(255, 0, 0, 0.45)_x000D_
    ),_x000D_
    /* bottom, image */_x000D_
    url(https://upload.wikimedia.org/wikipedia/commons/7/73/Lion_waiting_in_Namibia.jpg);_x000D_
    height: 1280px;_x000D_
    width: 960px;_x000D_
    background-size: cover;_x000D_
}_x000D_
_x000D_
.tinted-image p {_x000D_
    color: #fff;_x000D_
    padding: 100px;_x000D_
  }

<div class="tinted-image">_x000D_
  _x000D_
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Laboriosam distinctio, temporibus tempora a eveniet quas  qui veritatis sunt perferendis harum!</p>_x000D_
  _x000D_
</div>

source: https://css-tricks.com/tinted-images-multiple-backgrounds/

Notice that you're using Observable#map to convert the raw Response object your base Observable emits to a parsed representation of the JSON response.

If I understood you correctly, you want to map again. But this time, converting that raw JSON to instances of your Model. So you would do something like:

http.get('api/people.json')
  .map(res => res.json())
  .map(peopleData => peopleData.map(personData => new Person(personData)))

So, you started with an Observable that emits a Response object, turned that into an observable that emits an object of the parsed JSON of that response, and then turned that into yet another observable that turned that raw JSON into an array of your models.

If you want to save the changes on the log messages, use the batch script from the answer above from @patmortech (https://stackoverflow.com/a/468475),
who copied the script from https://stackoverflow.com/a/68850,
and add these lines between if "%bIsEmpty%" == "true" goto ERROR_EMPTY and goto :eofbefore:

set outputFile=%repos%\log-change-history.txt

echo User '%user%' changes log message in rev %rev% on %date% %time%.>>%outputFile%
echo ----- Old message: ----->>%outputFile%
svnlook propget --revprop %repos% svn:log -r %rev% >>%outputFile%
echo.>>%outputFile%
echo ----- New message: ----->>%outputFile%
for /f "tokens=*" %%g in ('find /V ""') do (echo %%g >>%outputFile%)
echo ---------->>%outputFile%
echo.>>%outputFile%

It will create a text file log-change-history.txt in the repo folder on the server and append each log change notification.

foreach (GridViewRow gvr in gvMyGridView.Rows)
{
    string PrimaryKey = gvMyGridView.DataKeys[gvr.RowIndex].Values[0].ToString();
}

You can use this code while doing an iteration with foreach or for any GridView event like OnRowDataBound.

Here you can input multiple values for DataKeyNames by separating with comma ,. For example, DataKeyNames="ProductID,ItemID,OrderID".

You can now access each of DataKeys by providing its index like below:

string ProductID = gvMyGridView.DataKeys[gvr.RowIndex].Values[0].ToString();
string ItemID = gvMyGridView.DataKeys[gvr.RowIndex].Values[1].ToString();
string OrderID = gvMyGridView.DataKeys[gvr.RowIndex].Values[2].ToString();

You can also use Key Name instead of its index to get the values from DataKeyNames collection like below:

string ProductID = gvMyGridView.DataKeys[gvr.RowIndex].Values["ProductID"].ToString();
string ItemID = gvMyGridView.DataKeys[gvr.RowIndex].Values["ItemID"].ToString();
string OrderID = gvMyGridView.DataKeys[gvr.RowIndex].Values["OrderID"].ToString();

To do it by using f-string and with control of the number of trailing digits:

print(f'A number -> {my_number:>20.5f}')

You need to use wildards (.*) before and after to replace the whole line:

sed 's/.*TEXT_TO_BE_REPLACED.*/This line is removed by the admin./'

Your response must return some sort of Response object. You can't just return an object.

So change it to something like:

return Response::json($promotion);

or my favorite using the helper function:

return response()->json($promotion);

If returning a response doesn't work it may be some sort of encoding issue. See this article: The Response content must be a string or object implementing __toString(), \"boolean\" given."

Let us say we have a project social_login. To check the traffic to your repo, you can goto https://github.com//social_login/graphs/traffic

• Example:-

  https://github.com/balireddypraveen/social_login/graphs/traffic

If you use node.js 0.12 or above / typescript 1.4 or above, just add compiler options like:

tsc a.ts --target es6 --module commonjs

More info: https://github.com/Microsoft/TypeScript/wiki/Compiler-Options

If you use tsconfig.json, then like this:

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es6"
    }
}

More info: https://github.com/Microsoft/TypeScript/wiki/tsconfig.json

https://docs.python.org/library/os.html

To complement Greg's post, if you're on a posix system, which includes MacOS, Linux, Unix, etc. you can use os.uname() to get a better feel for what kind of system it is.

My issue was also within the heredoc. I had it within an if/then statement and the closing bracket directly after the semicolon. So I moved the closing bracket to its own line and issue was fixed.

I changed:

... ;}

to:

... ;
}

Mitch is right. It depends on resources (memory).

Although Raymond's article is dedicated to Windows threads, not to C# threads, the logic applies the same (C# threads are mapped to Windows threads).

However, as we are in C#, if we want to be completely precise, we need to distinguish between "started" and "non started" threads. Only started threads actually reserve stack space (as we could expect). Non started threads only allocate the information required by a thread object (you can use reflector if interested in the actual members).

You can actually test it for yourself, compare:

    static void DummyCall()
    {
        Thread.Sleep(1000000000);
    }

    static void Main(string[] args)
    {
        int count = 0;
        var threadList = new List<Thread>();
        try
        {
            while (true)
            {
                Thread newThread = new Thread(new ThreadStart(DummyCall), 1024);
                newThread.Start();
                threadList.Add(newThread);
                count++;
            }
        }
        catch (Exception ex)
        {
        }
    }

with:

   static void DummyCall()
    {
        Thread.Sleep(1000000000);
    }

    static void Main(string[] args)
    {
        int count = 0;
        var threadList = new List<Thread>();
        try
        {
            while (true)
            {
                Thread newThread = new Thread(new ThreadStart(DummyCall), 1024);
                threadList.Add(newThread);
                count++;
            }
        }
        catch (Exception ex)
        {
        }
    }

Put a breakpoint in the exception (out of memory, of course) in VS to see the value of counter. There is a very significant difference, of course.

The thing I use is this:

In your template an alert area

<div id="alert-area"></div>

Then an jQuery function for showing an alert

function newAlert (type, message) {
    $("#alert-area").append($("<div class='alert-message " + type + " fade in' data-alert><p> " + message + " </p></div>"));
    $(".alert-message").delay(2000).fadeOut("slow", function () { $(this).remove(); });
}
newAlert('success', 'Oh yeah!');

I see 2 easy options:

• multiple background with a translucent single gradient over image
• huge inset shadow

gradient option:

html {
  min-height:100%;
  background:linear-gradient(0deg, rgba(255, 0, 150, 0.3), rgba(255, 0, 150, 0.3)), url(http://lorempixel.com/800/600/nature/2);
  background-size:cover;
}

shadow option:

html {
  min-height:100%;
  background:url(http://lorempixel.com/800/600/nature/2);
  background-size:cover;
  box-shadow:inset 0 0 0 2000px rgba(255, 0, 150, 0.3);
}

an old codepen of mine with few examples

a third option

• with background-blen-mode :

  The background-blend-mode CSS property sets how an element's background images should blend with each other and with the element's background color.

html {
  min-height:100%;
  background:url(http://lorempixel.com/800/600/nature/2) rgba(255, 0, 150, 0.3);
  background-size:cover;
  background-blend-mode: multiply;
}

sql server 2012

  with
  student as 
(select sid,year from (
values (101,5),(102,5),(103,4),(104,3),(105,2),(106,1),(107,4)
) as student(sid,year)
)
select iif(year=5,sid,year) as myCol,* from student


 myCol  sid year
101 101 5
102 102 5
4   103 4
3   104 3
2   105 2
1   106 1
4   107 4

With Java-11 and above, you can make use of the String.strip API to return a string whose value is this string, with all leading and trailing whitespace removed. The javadoc for the same reads :

/**
 * Returns a string whose value is this string, with all leading
 * and trailing {@link Character#isWhitespace(int) white space}
 * removed.
 * <p>
 * If this {@code String} object represents an empty string,
 * or if all code points in this string are
 * {@link Character#isWhitespace(int) white space}, then an empty string
 * is returned.
 * <p>
 * Otherwise, returns a substring of this string beginning with the first
 * code point that is not a {@link Character#isWhitespace(int) white space}
 * up to and including the last code point that is not a
 * {@link Character#isWhitespace(int) white space}.
 * <p>
 * This method may be used to strip
 * {@link Character#isWhitespace(int) white space} from
 * the beginning and end of a string.
 *
 * @return  a string whose value is this string, with all leading
 *          and trailing white space removed
 *
 * @see Character#isWhitespace(int)
 *
 * @since 11
 */
public String strip()

The sample cases for these could be:--

System.out.println("  leading".strip()); // prints "leading"
System.out.println("trailing  ".strip()); // prints "trailing"
System.out.println("  keep this  ".strip()); // prints "keep this"

In order to create a backup using pg_dump that is compatible with pg_restore you must use the --format=custom / -Fc when creating your dump.

From the docs:

Output a custom-format archive suitable for input into pg_restore.

So your pg_dump command might look like:

pg_dump --file /tmp/db.dump --format=custom --host localhost --dbname my-source-database --username my-username --password

And your pg_restore command:

pg_restore --verbose --clean --no-acl --no-owner --host localhost --dbname my-destination-database /tmp/db.dump

The "why" is to avoid accidental fall-through, for which I'm grateful. This is a not uncommon source of bugs in C and Java.

The workaround is to use goto, e.g.

switch (number.ToString().Length)
{
    case 3:
        ans += string.Format("{0} hundred and ", numbers[number / 100]);
        goto case 2;
    case 2:
    // Etc
}

The general design of switch/case is a little bit unfortunate in my view. It stuck too close to C - there are some useful changes which could be made in terms of scoping etc. Arguably a smarter switch which could do pattern matching etc would be helpful, but that's really changing from switch to "check a sequence of conditions" - at which point a different name would perhaps be called for.

This is because you are adding your <tbody> tag before <td> in table you cannot print any data without <td>.

So for that you have to make a <div> say #header with position: fixed;

 header
 {
      position: fixed;
 }

make another <div> which will act as <tbody>

tbody
{
    overflow:scroll;
}

Now your header is fixed and the body will scroll. And the header will remain there.

How to implement a SeekBar

Add the SeekBar to your layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/textView"
        android:layout_margin="20dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <SeekBar
        android:id="@+id/seekBar"
        android:max="100"
        android:progress="50"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>

Notes

• max is the highest value that the seek bar can go to. The default is 100. The minimum is 0. The xml min value is only available from API 26, but you can just programmatically convert the 0-100 range to whatever you need for earlier versions.
• progress is the initial position of the slider dot (called a "thumb").
• For a vertical SeekBar use android:rotation="270".

Listen for changes in code

public class MainActivity extends AppCompatActivity {

    TextView tvProgressLabel;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // set a change listener on the SeekBar
        SeekBar seekBar = findViewById(R.id.seekBar);
        seekBar.setOnSeekBarChangeListener(seekBarChangeListener);

        int progress = seekBar.getProgress();
        tvProgressLabel = findViewById(R.id.textView);
        tvProgressLabel.setText("Progress: " + progress);
    }

    SeekBar.OnSeekBarChangeListener seekBarChangeListener = new SeekBar.OnSeekBarChangeListener() {

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            // updated continuously as the user slides the thumb
            tvProgressLabel.setText("Progress: " + progress);
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            // called when the user first touches the SeekBar
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            // called after the user finishes moving the SeekBar
        }
    };
}

Notes

• If you don't need to do any updates while the user is moving the seekbar, then you can just update the UI in onStopTrackingTouch.

See also

• SeekBar Tutorial With Example In Android Studio

I ran into this related issue even after having already successfully run composer. I updated composer, and when running composer install or php composer.phar install I got:

...failed to open stream: Permission denied...

It turns out after much research that the previous answers regarding changing permissions for the folder worked. They are just slightly different directories now.

In my install, on OS X, the cache file is in /Users/[USER]/.composer/cache, and I was having trouble because the cache file was owned by root. Changing ownership of '.composer' recursively to my user solved the issue.

This is what I did:

sudo chown -R [USER] cache

Then I ran the composer install again and voila!

'SET' is forgotten

ALTER TABLE ONLY users ALTER COLUMN lang SET DEFAULT 'en_GB';

I do not know much about Java but URL query arguments should be separated by "&", not "?"

http://tools.ietf.org/html/rfc3986 is good place for reference using "sub-delim" as keyword. http://en.wikipedia.org/wiki/Query_string is another good source.

Introduction

The ViewExpiredException will be thrown whenever the javax.faces.STATE_SAVING_METHOD is set to server (default) and the enduser sends a HTTP POST request on a view via <h:form> with <h:commandLink>, <h:commandButton> or <f:ajax>, while the associated view state isn't available in the session anymore.

The view state is identified as value of a hidden input field javax.faces.ViewState of the <h:form>. With the state saving method set to server, this contains only the view state ID which references a serialized view state in the session. So, when the session is expired for some reason (either timed out in server or client side, or the session cookie is not maintained anymore for some reason in browser, or by calling HttpSession#invalidate() in server, or due a server specific bug with session cookies as known in WildFly), then the serialized view state is not available anymore in the session and the enduser will get this exception. To understand the working of the session, see also How do servlets work? Instantiation, sessions, shared variables and multithreading.

There is also a limit on the amount of views JSF will store in the session. When the limit is hit, then the least recently used view will be expired. See also com.sun.faces.numberOfViewsInSession vs com.sun.faces.numberOfLogicalViews.

With the state saving method set to client, the javax.faces.ViewState hidden input field contains instead the whole serialized view state, so the enduser won't get a ViewExpiredException when the session expires. It can however still happen on a cluster environment ("ERROR: MAC did not verify" is symptomatic) and/or when there's a implementation-specific timeout on the client side state configured and/or when server re-generates the AES key during restart, see also Getting ViewExpiredException in clustered environment while state saving method is set to client and user session is valid how to solve it.

Regardless of the solution, make sure you do not use enableRestoreView11Compatibility. it does not at all restore the original view state. It basically recreates the view and all associated view scoped beans from scratch and hereby thus losing all of original data (state). As the application will behave in a confusing way ("Hey, where are my input values..??"), this is very bad for user experience. Better use stateless views or <o:enableRestorableView> instead so you can manage it on a specific view only instead of on all views.

As to the why JSF needs to save view state, head to this answer: Why JSF saves the state of UI components on server?

Avoiding ViewExpiredException on page navigation

In order to avoid ViewExpiredException when e.g. navigating back after logout when the state saving is set to server, only redirecting the POST request after logout is not sufficient. You also need to instruct the browser to not cache the dynamic JSF pages, otherwise the browser may show them from the cache instead of requesting a fresh one from the server when you send a GET request on it (e.g. by back button).

The javax.faces.ViewState hidden field of the cached page may contain a view state ID value which is not valid anymore in the current session. If you're (ab)using POST (command links/buttons) instead of GET (regular links/buttons) for page-to-page navigation, and click such a command link/button on the cached page, then this will in turn fail with a ViewExpiredException.

To fire a redirect after logout in JSF 2.0, either add <redirect /> to the <navigation-case> in question (if any), or add ?faces-redirect=true to the outcome value.

<h:commandButton value="Logout" action="logout?faces-redirect=true" />

or

public String logout() {
    // ...
    return "index?faces-redirect=true";
}

To instruct the browser to not cache the dynamic JSF pages, create a Filter which is mapped on the servlet name of the FacesServlet and adds the needed response headers to disable the browser cache. E.g.

@WebFilter(servletNames={"Faces Servlet"}) // Must match <servlet-name> of your FacesServlet.
public class NoCacheFilter implements Filter {

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse res = (HttpServletResponse) response;

        if (!req.getRequestURI().startsWith(req.getContextPath() + ResourceHandler.RESOURCE_IDENTIFIER)) { // Skip JSF resources (CSS/JS/Images/etc)
            res.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1.
            res.setHeader("Pragma", "no-cache"); // HTTP 1.0.
            res.setDateHeader("Expires", 0); // Proxies.
        }

        chain.doFilter(request, response);
    }

    // ...
}

Avoiding ViewExpiredException on page refresh

In order to avoid ViewExpiredException when refreshing the current page when the state saving is set to server, you not only need to make sure you are performing page-to-page navigation exclusively by GET (regular links/buttons), but you also need to make sure that you are exclusively using ajax to submit the forms. If you're submitting the form synchronously (non-ajax) anyway, then you'd best either make the view stateless (see later section), or to send a redirect after POST (see previous section).

Having a ViewExpiredException on page refresh is in default configuration a very rare case. It can only happen when the limit on the amount of views JSF will store in the session is hit. So, it will only happen when you've manually set that limit way too low, or that you're continuously creating new views in the "background" (e.g. by a badly implemented ajax poll in the same page or by a badly implemented 404 error page on broken images of the same page). See also com.sun.faces.numberOfViewsInSession vs com.sun.faces.numberOfLogicalViews for detail on that limit. Another cause is having duplicate JSF libraries in runtime classpath conflicting each other. The correct procedure to install JSF is outlined in our JSF wiki page.

Handling ViewExpiredException

When you want to handle an unavoidable ViewExpiredException after a POST action on an arbitrary page which was already opened in some browser tab/window while you're logged out in another tab/window, then you'd like to specify an error-page for that in web.xml which goes to a "Your session is timed out" page. E.g.

<error-page>
    <exception-type>javax.faces.application.ViewExpiredException</exception-type>
    <location>/WEB-INF/errorpages/expired.xhtml</location>
</error-page>

Use if necessary a meta refresh header in the error page in case you intend to actually redirect further to home or login page.

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>Session expired</title>
        <meta http-equiv="refresh" content="0;url=#{request.contextPath}/login.xhtml" />
    </head>
    <body>
        <h1>Session expired</h1>
        <h3>You will be redirected to login page</h3>
        <p><a href="#{request.contextPath}/login.xhtml">Click here if redirect didn't work or when you're impatient</a>.</p>
    </body>
</html>

(the 0 in content represents the amount of seconds before redirect, 0 thus means "redirect immediately", you can use e.g. 3 to let the browser wait 3 seconds with the redirect)

Note that handling exceptions during ajax requests requires a special ExceptionHandler. See also Session timeout and ViewExpiredException handling on JSF/PrimeFaces ajax request. You can find a live example at OmniFaces FullAjaxExceptionHandler showcase page (this also covers non-ajax requests).

Also note that your "general" error page should be mapped on <error-code> of 500 instead of an <exception-type> of e.g. java.lang.Exception or java.lang.Throwable, otherwise all exceptions wrapped in ServletException such as ViewExpiredException would still end up in the general error page. See also ViewExpiredException shown in java.lang.Throwable error-page in web.xml.

<error-page>
    <error-code>500</error-code>
    <location>/WEB-INF/errorpages/general.xhtml</location>
</error-page>

Stateless views

A completely different alternative is to run JSF views in stateless mode. This way nothing of JSF state will be saved and the views will never expire, but just be rebuilt from scratch on every request. You can turn on stateless views by setting the transient attribute of <f:view> to true:

<f:view transient="true">

</f:view>

This way the javax.faces.ViewState hidden field will get a fixed value of "stateless" in Mojarra (have not checked MyFaces at this point). Note that this feature was introduced in Mojarra 2.1.19 and 2.2.0 and is not available in older versions.

The consequence is that you cannot use view scoped beans anymore. They will now behave like request scoped beans. One of the disadvantages is that you have to track the state yourself by fiddling with hidden inputs and/or loose request parameters. Mainly those forms with input fields with rendered, readonly or disabled attributes which are controlled by ajax events will be affected.

Note that the <f:view> does not necessarily need to be unique throughout the view and/or reside in the master template only. It's also completely legit to redeclare and nest it in a template client. It basically "extends" the parent <f:view> then. E.g. in master template:

<f:view contentType="text/html">
    <ui:insert name="content" />
</f:view>

and in template client:

<ui:define name="content">
    <f:view transient="true">
        <h:form>...</h:form>
    </f:view>
</f:view>

You can even wrap the <f:view> in a <c:if> to make it conditional. Note that it would apply on the entire view, not only on the nested contents, such as the <h:form> in above example.

See also

• ViewExpiredException shown in java.lang.Throwable error-page in web.xml
• Check if session exists JSF
• Session timeout and ViewExpiredException handling on JSF/PrimeFaces ajax request

Unrelated to the concrete problem, using HTTP POST for pure page-to-page navigation isn't very user/SEO friendly. In JSF 2.0 you should really prefer <h:link> or <h:button> over the <h:commandXxx> ones for plain vanilla page-to-page navigation.

So instead of e.g.

<h:form id="menu">
    <h:commandLink value="Foo" action="foo?faces-redirect=true" />
    <h:commandLink value="Bar" action="bar?faces-redirect=true" />
    <h:commandLink value="Baz" action="baz?faces-redirect=true" />
</h:form>

better do

<h:link value="Foo" outcome="foo" />
<h:link value="Bar" outcome="bar" />
<h:link value="Baz" outcome="baz" />

See also

• When should I use h:outputLink instead of h:commandLink?
• Difference between h:button and h:commandButton
• How to navigate in JSF? How to make URL reflect current page (and not previous one)

If you are using angular version 8 please run the below command to fix this issue.

ng update @angular/cli @angular/core

Excellent!!!

IdentityResult result = await UserManager.UpdateAsync(user);

As I understand it, you want the server be able to send messages through from client 1 to client 2. You cannot directly connect two clients because one of the two ends of a WebSocket connection needs to be a server.

This is some pseudocodish JavaScript:

Client:

var websocket = new WebSocket("server address");

websocket.onmessage = function(str) {
  console.log("Someone sent: ", str);
};

// Tell the server this is client 1 (swap for client 2 of course)
websocket.send(JSON.stringify({
  id: "client1"
}));

// Tell the server we want to send something to the other client
websocket.send(JSON.stringify({
  to: "client2",
  data: "foo"
}));

Server:

var clients = {};

server.on("data", function(client, str) {
  var obj = JSON.parse(str);

  if("id" in obj) {
    // New client, add it to the id/client object
    clients[obj.id] = client;
  } else {
    // Send data to the client requested
    clients[obj.to].send(obj.data);
  }
});

On modern browsers, you can use the input event:

DEMO

$("#textbox").on('input',function() {alert("Change detected!");});

try this

HTML:

<div class="icon-2x-circle"><i class="fa fa-check fa-2x"></i></div>

CSS:

i {
    width: 30px;
    height: 30px;
}

.icon-2x-circle {
    text-align: center;
    padding: 3px;
    display: inline-block;
    -moz-border-radius: 100px;
    -webkit-border-radius: 100px;
    border-radius: 100px;
    -moz-box-shadow: 0px 0px 2px #888;
    -webkit-box-shadow: 0px 0px 2px #888;
    box-shadow: 0px 0px 2px #888;
}

From iOS 6 and later UITextAlignment is deprecated. use NSTextAlignment

myLabel.textAlignment = NSTextAlignmentCenter;

Swift Version from iOS 6 and later

myLabel.textAlignment = .center

It's just mv srcdir/* targetdir/.

If there are too many files in srcdir you might want to try something like the following approach:

cd srcdir
find -exec mv {} targetdir/ +

In contrast to \; the final + collects arguments in an xargs like manner instead of executing mv once for every file.

When you have replace: true you get the following piece of DOM:

<div ng-controller="Ctrl" class="ng-scope">
    <div class="ng-binding">hello</div>
</div>

whereas, with replace: false you get this:

<div ng-controller="Ctrl" class="ng-scope">
    <my-dir>
        <div class="ng-binding">hello</div>
    </my-dir>
</div>

So the replace property in directives refer to whether the element to which the directive is being applied (<my-dir> in that case) should remain (replace: false) and the directive's template should be appended as its child,

OR

the element to which the directive is being applied should be replaced (replace: true) by the directive's template.

In both cases the element's (to which the directive is being applied) children will be lost. If you wanted to perserve the element's original content/children you would have to translude it. The following directive would do it:

.directive('myDir', function() {
    return {
        restrict: 'E',
        replace: false,
        transclude: true,
        template: '<div>{{title}}<div ng-transclude></div></div>'
    };
});

In that case if in the directive's template you have an element (or elements) with attribute ng-transclude, its content will be replaced by the element's (to which the directive is being applied) original content.

See example of translusion http://plnkr.co/edit/2DJQydBjgwj9vExLn3Ik?p=preview

See this to read more about translusion.

Just an addition to this thread... Below is a version of the code posted by pahlevan, but for C#/XNA and tidied up a little:

    /// <summary>
    /// Intersects a line and a circle.
    /// </summary>
    /// <param name="location">the location of the circle</param>
    /// <param name="radius">the radius of the circle</param>
    /// <param name="lineFrom">the starting point of the line</param>
    /// <param name="lineTo">the ending point of the line</param>
    /// <returns>true if the line and circle intersect each other</returns>
    public static bool IntersectLineCircle(Vector2 location, float radius, Vector2 lineFrom, Vector2 lineTo)
    {
        float ab2, acab, h2;
        Vector2 ac = location - lineFrom;
        Vector2 ab = lineTo - lineFrom;
        Vector2.Dot(ref ab, ref ab, out ab2);
        Vector2.Dot(ref ac, ref ab, out acab);
        float t = acab / ab2;

        if (t < 0)
            t = 0;
        else if (t > 1)
            t = 1;

        Vector2 h = ((ab * t) + lineFrom) - location;
        Vector2.Dot(ref h, ref h, out h2);

        return (h2 <= (radius * radius));
    }

Can the screenshot or icon be transformed (scaled, rotated, skewed ...)? There are quite a few methods on top of my head that could possibly help you:

• Simple euclidean distance as mentioned by @carlosdc (doesn't work with transformed images and you need a threshold).
• (Normalized) Cross Correlation - a simple metrics which you can use for comparison of image areas. It's more robust than the simple euclidean distance but doesn't work on transformed images and you will again need a threshold.
• Histogram comparison - if you use normalized histograms, this method works well and is not affected by affine transforms. The problem is determining the correct threshold. It is also very sensitive to color changes (brightness, contrast etc.). You can combine it with the previous two.
• Detectors of salient points/areas - such as MSER (Maximally Stable Extremal Regions), SURF or SIFT. These are very robust algorithms and they might be too complicated for your simple task. Good thing is that you do not have to have an exact area with only one icon, these detectors are powerful enough to find the right match. A nice evaluation of these methods is in this paper: Local invariant feature detectors: a survey.

Most of these are already implemented in OpenCV - see for example the cvMatchTemplate method (uses histogram matching): http://dasl.mem.drexel.edu/~noahKuntz/openCVTut6.html. The salient point/area detectors are also available - see OpenCV Feature Detection.

One more option is to add the path of the privatekey file like this in terminal:

ssh-add "path to the privatekeyfile"

and then execute the pull command

Some languages have combining diacritics as language letters and accent diacritics to specify accent.

I think it is more safe to specify explicitly what diactrics you want to strip:

def strip_accents(string, accents=('COMBINING ACUTE ACCENT', 'COMBINING GRAVE ACCENT', 'COMBINING TILDE')):
    accents = set(map(unicodedata.lookup, accents))
    chars = [c for c in unicodedata.normalize('NFD', string) if c not in accents]
    return unicodedata.normalize('NFC', ''.join(chars))

You can do injection on Directives, and it looks just like it does everywhere else.

app.directive('changeIt', ['myData', function(myData){
    return {
        restrict: 'C',
        link: function (scope, element, attrs) {
            scope.name = myData.name;
        }
    }
 }]);

Try this

package main

import "fmt"
import "strconv"

func FloatToString(input_num float64) string {
    // to convert a float number to a string
    return strconv.FormatFloat(input_num, 'f', 6, 64)
}

func main() {
    fmt.Println(FloatToString(21312421.213123))
}

If you just want as many digits precision as possible, then the special precision -1 uses the smallest number of digits necessary such that ParseFloat will return f exactly. Eg

strconv.FormatFloat(input_num, 'f', -1, 64)

Personally I find fmt easier to use. (Playground link)

fmt.Printf("x = %.6f\n", 21312421.213123)

Or if you just want to convert the string

fmt.Sprintf("%.6f", 21312421.213123)

Very simple use of any

df <- <your structure>

df$Den <- apply(df,1,function(i) {ifelse(any(is.na(i)) | any(i != 1), 0, 1)})

Simply you can change any activity name by using

Activityname.this.setTitle("Title Name");

In the Oracle RDBMS, it is possible to use a multi-row subquery in the select clause as long as the (sub-)output is encapsulated as a collection. In particular, a multi-row select clause subquery can output each of its rows as an xmlelement that is encapsulated in an xmlforest.

Have a look at: https://developers.google.com/accounts/docs/OAuth2UserAgent#handlingtheresponse

It says:

Other parameters included in the response include expires_in and token_type. These parameters describe the lifetime of the token in seconds...

To just trim trailing spaces you should use

UPDATE
    TableName
SET
    ColumnName = RTRIM(ColumnName)

However, if you want to trim all leading and trailing spaces then use this

UPDATE
    TableName
SET
    ColumnName = LTRIM(RTRIM(ColumnName))

Yes, it's possible. Just implement getItemViewType(), and take care of the viewType parameter in onCreateViewHolder().

So you do something like:

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    class ViewHolder0 extends RecyclerView.ViewHolder {
        ...
        public ViewHolder0(View itemView){
        ...
        }
    }

    class ViewHolder2 extends RecyclerView.ViewHolder {
        ...
        public ViewHolder2(View itemView){
        ...
    }

    @Override
    public int getItemViewType(int position) {
        // Just as an example, return 0 or 2 depending on position
        // Note that unlike in ListView adapters, types don't have to be contiguous
        return position % 2 * 2;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         switch (viewType) {
             case 0: return new ViewHolder0(...);
             case 2: return new ViewHolder2(...);
             ...
         }
    }

    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
        switch (holder.getItemViewType()) {
            case 0:
                ViewHolder0 viewHolder0 = (ViewHolder0)holder;
                ...
                break;

            case 2:
                ViewHolder2 viewHolder2 = (ViewHolder2)holder;
                ...
                break;
        }
    }
}

If you're using a table view to display Settings and other options (like the built-in Settings app does), then you can set your Table View Content to Static Cells under the Attributes Inspector. Also, to do this, you must embedded your Table View in a UITableViewController instance.

HTML

<div id="myparent">
  <div id="mychild">Test Content here</div>
</div>

CSS

#myparent {
  display: table;
}
#mychild {
  display: table-cell;
  vertical-align: middle;
}

We set the parent div to display as a table and the child div to display as a table-cell. We can then use vertical-align on the child div and set its value to middle. Anything inside this child div will be vertically centered.

In DB2, using single quotes instead of your double quotes will work. So that could translate the same in Oracle..

SELECT CustomerName AS Customer, '' AS Contact 
FROM Customers;

This query should be written before the query which create or update data in the database, this query looks like :

mysql_query("set names 'utf8'");

Note that you should write the encode which you are using in the header for example if you are using utf-8 you add it like this in the header or it will couse a problem with Internet Explorer

so your page looks like this

<html>
    <head>
        <title>page title</title>
        <meta charset="UTF-8" />   
    </head>
    <body>
    <?php
            mysql_query("set names 'utf8'");   
            $sql = "INSERT * FROM ..... ";  
            mysql_query($sql);
    ?>    

    </body>
</html>

Kinda little late but I tried to extend @Tobia's answer to set the layout "horizontal" or "vertical" driven by the command argument e.g.

{"keys": ["f6"], "command": "split_pane", "args": {"split_type": "vertical"} } 

Plugin code:

import sublime_plugin


class SplitPaneCommand(sublime_plugin.WindowCommand):
    def run(self, split_type):
        w = self.window
        if w.num_groups() == 1:
            if (split_type == "horizontal"):
                w.run_command('set_layout', {
                    'cols': [0.0, 1.0],
                    'rows': [0.0, 0.33, 1.0],
                    'cells': [[0, 0, 1, 1], [0, 1, 1, 2]]
                })
            elif (split_type == "vertical"):
                w.run_command('set_layout', {
                    "cols": [0.0, 0.46, 1.0],
                    "rows": [0.0, 1.0],
                    "cells": [[0, 0, 1, 1], [1, 0, 2, 1]]
                })

            w.focus_group(0)
            w.run_command('clone_file')
            w.run_command('move_to_group', {'group': 1})
            w.focus_group(1)
        else:
            w.focus_group(1)
            w.run_command('close')
            w.run_command('set_layout', {
                'cols': [0.0, 1.0],
                'rows': [0.0, 1.0],
                'cells': [[0, 0, 1, 1]]
            })

I recommend the setup.py of the Python Packaging User Guide's example project.

The Python Packaging User Guide "aims to be the authoritative resource on how to package, publish and install Python distributions using current tools".

jQuery has an excellent function for looping through a set of elements: .each()

$('#formId').children().each(
    function(){
        //access to form element via $(this)
    }
);

In my fairly complex scenario the accepted answer for how to do this in Chrome doesn't work for me. You may want to try the Firefox debugger instead (part of the Firefox developer tools), which shows all of the 'Sources', including those that are part of an iFrame

I believe there are two answers. One using 'pure' Javascript with IIFE function to hide its auxiliary construction functions. And the other using a NodeJS module to also hide its auxiliary construction functions.

I will show only the example with a NodeJS module.

Class Vector2d.js:

/*

    Implement a class of type Vetor2d with three types of constructors.

*/

// If a constructor function is successfully executed,
// must have its value changed to 'true'.let global_wasExecuted = false;  
global_wasExecuted = false;   

//Tests whether number_value is a numeric type
function isNumber(number_value) {
    
    let hasError = !(typeof number_value === 'number') || !isFinite(number_value);

    if (hasError === false){
        hasError = isNaN(number_value);
    }

    return !hasError;
}

// Object with 'x' and 'y' properties associated with its values.
function vector(x,y){
    return {'x': x, 'y': y};
}

//constructor in case x and y are 'undefined'
function new_vector_zero(x, y){

    if (x === undefined && y === undefined){
        global_wasExecuted = true;
        return new vector(0,0);
    }
}

//constructor in case x and y are numbers
function new_vector_numbers(x, y){

    let x_isNumber = isNumber(x);
    let y_isNumber = isNumber(y);

    if (x_isNumber && y_isNumber){
        global_wasExecuted = true;
        return new vector(x,y);
    }
}

//constructor in case x is an object and y is any
//thing (he is ignored!)
function new_vector_object(x, y){

    let x_ehObject = typeof x === 'object';
    //ignore y type

    if (x_ehObject){

        //assigns the object only for clarity of code
        let x_object = x;

        //tests whether x_object has the properties 'x' and 'y'
        if ('x' in x_object && 'y' in x_object){

            global_wasExecuted = true;

            /*
            we only know that x_object has the properties 'x' and 'y',
            now we will test if the property values ??are valid,
            calling the class constructor again.            
            */
            return new Vector2d(x_object.x, x_object.y);
        }

    }
}


//Function that returns an array of constructor functions
function constructors(){
    let c = [];
    c.push(new_vector_zero);
    c.push(new_vector_numbers);
    c.push(new_vector_object);

    /*
        Your imagination is the limit!
        Create as many construction functions as you want.    
    */

    return c;
}

class Vector2d {

    constructor(x, y){

        //returns an array of constructor functions
        let my_constructors = constructors(); 

        global_wasExecuted = false;

        //variable for the return of the 'vector' function
        let new_vector;     

        //traverses the array executing its corresponding constructor function
        for (let index = 0; index < my_constructors.length; index++) {

            //execute a function added by the 'constructors' function
            new_vector = my_constructors[index](x,y);
            
            if (global_wasExecuted) {
            
                this.x = new_vector.x;
                this.y = new_vector.y;

                break; 
            };
        };
    }

    toString(){
        return `(x: ${this.x}, y: ${this.y})`;
    }

}

//Only the 'Vector2d' class will be visible externally
module.exports = Vector2d;  

The useVector2d.js file uses the Vector2d.js module:

const Vector = require('./Vector2d');

let v1 = new Vector({x: 2, y: 3});
console.log(`v1 = ${v1.toString()}`);

let v2 = new Vector(1, 5.2);
console.log(`v2 = ${v2.toString()}`);

let v3 = new Vector();
console.log(`v3 = ${v3.toString()}`);

Terminal output:

v1 = (x: 2, y: 3)
v2 = (x: 1, y: 5.2)
v3 = (x: 0, y: 0)

With this we avoid dirty code (many if's and switch's spread throughout the code), difficult to maintain and test. Each building function knows which conditions to test. Increasing and / or decreasing your building functions is now simple.

It is worth to check if you have refactored package name of your main class annotated with @SpringBootApplication. In that case the testcase should be in an appropriate package otherwise it will be looking for it in the older package . this was the case for me.

For me the solution was:

git clone https://[email protected]

Here you need to be the owner of the repo but if you aren't then it will go as

git clone https://[email protected]/ownersusername/repo_name.git

If you have 2FA enabled then:

1. Go to the settings from the profile icon in top right or visit https://github.com/settings/profile
2. Go to the bottom tab or go to https://github.com/settings/tokens
3. Open last tab here Personal tokens. And generate a token
4. Copy the token and run git clone https://[email protected]

When prompted for password put that token in here.

You need to replace it as WHERE clockDate = { fn CURRENT_DATE() } AND userName = 'test'. Please remove extra ")" from { fn CURRENT_DATE() })

Apart from a bare except: clause (which as others have said you shouldn't use), you can simply catch Exception:

import traceback
import logging

try:
    whatever()
except Exception as e:
    logging.error(traceback.format_exc())
    # Logs the error appropriately. 

You would normally only ever consider doing this at the outermost level of your code if for example you wanted to handle any otherwise uncaught exceptions before terminating.

The advantage of except Exception over the bare except is that there are a few exceptions that it wont catch, most obviously KeyboardInterrupt and SystemExit: if you caught and swallowed those then you could make it hard for anyone to exit your script.

Horizontal Paging With Custom Page Width (Swift 4 & 5)

Many solutions presented here result in some weird behaviour that doesn't feel like properly implemented paging.

The solution presented in this tutorial, however, doesn't seem to have any issues. It just feels like a perfectly working paging algorithm. You can implement it in 5 simple steps:

1. Add the following property to your type: private var indexOfCellBeforeDragging = 0
2. Set the collectionView delegate like this: collectionView.delegate = self
3. Add conformance to UICollectionViewDelegate via an extension: extension YourType: UICollectionViewDelegate { }

4. Add the following method to the extension implementing the UICollectionViewDelegate conformance and set a value for pageWidth:

   func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
       let pageWidth = // The width your page should have (plus a possible margin)
       let proportionalOffset = collectionView.contentOffset.x / pageWidth
       indexOfCellBeforeDragging = Int(round(proportionalOffset))
   }
   

5. Add the following method to the extension implementing the UICollectionViewDelegate conformance, set the same value for pageWidth (you may also store this value at a central place) and set a value for collectionViewItemCount:

   func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
       // Stop scrolling
       targetContentOffset.pointee = scrollView.contentOffset
   
       // Calculate conditions
       let pageWidth = // The width your page should have (plus a possible margin)
       let collectionViewItemCount = // The number of items in this section
       let proportionalOffset = collectionView.contentOffset.x / pageWidth
       let indexOfMajorCell = Int(round(proportionalOffset))
       let swipeVelocityThreshold: CGFloat = 0.5
       let hasEnoughVelocityToSlideToTheNextCell = indexOfCellBeforeDragging + 1 < collectionViewItemCount && velocity.x > swipeVelocityThreshold
       let hasEnoughVelocityToSlideToThePreviousCell = indexOfCellBeforeDragging - 1 >= 0 && velocity.x < -swipeVelocityThreshold
       let majorCellIsTheCellBeforeDragging = indexOfMajorCell == indexOfCellBeforeDragging
       let didUseSwipeToSkipCell = majorCellIsTheCellBeforeDragging && (hasEnoughVelocityToSlideToTheNextCell || hasEnoughVelocityToSlideToThePreviousCell)
   
       if didUseSwipeToSkipCell {
           // Animate so that swipe is just continued
           let snapToIndex = indexOfCellBeforeDragging + (hasEnoughVelocityToSlideToTheNextCell ? 1 : -1)
           let toValue = pageWidth * CGFloat(snapToIndex)
           UIView.animate(
               withDuration: 0.3,
               delay: 0,
               usingSpringWithDamping: 1,
               initialSpringVelocity: velocity.x,
               options: .allowUserInteraction,
               animations: {
                   scrollView.contentOffset = CGPoint(x: toValue, y: 0)
                   scrollView.layoutIfNeeded()
               },
               completion: nil
           )
       } else {
           // Pop back (against velocity)
           let indexPath = IndexPath(row: indexOfMajorCell, section: 0)
           collectionView.scrollToItem(at: indexPath, at: .left, animated: true)
       }
   }
   

You can achieve this by two methods

1. Using XML
2. Using java

Using XML Add this attribute to toolbar XML app:menu = "menu_name"

Using java By overriding onCreateOptionMenu(Menu menu)

public class MainActivity extends AppCompatActivity { 

  private Toolbar toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
}
@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.demo_menu,menu);
        return super.onCreateOptionsMenu(menu);
    }
}

for more details or implementating click on the menu go through this article https://bedevelopers.tech/android-toolbar-implementation-using-android-studio/

This problems gave me great headache when i tried to use reverse for generating activation link and send it via email of course. So i think from tests.py it will be same. The correct way to do this is following:

from django.test import Client
from django.core.urlresolvers import reverse

#app name - name of the app where the url is defined
client= Client()
response = client.get(reverse('app_name:edit_project', project_id=4)) 

Try

import subprocess
subprocess.call(["C:/Documents and Settings/flow_model/flow.exe"])

An optional prefix ! which negates the pattern; any matching file excluded by a previous pattern will become included again. If a negated pattern matches, this will override lower precedence patterns sources.

http://schacon.github.com/git/gitignore.html

*.json
!spec/*.json

This error is because of multiple project having the offending resources.

Try out adding the dependencies projects other way around. (like in pom.xml or external depandancies)

At the risk of being years late and off topic - and notwithstanding @Marc's excellent insight, in Swift it looks like:

let basename = NSURL(string: "path/to/file.ext")?.URLByDeletingPathExtension?.lastPathComponent

I know this is somewhat older, but since the keywords "border inside" landed me directly here, I would like to share some findings that may be worth mentioning here. When I was adding a border on the hover state, i got the effects that OP is talking about. The border ads pixels to the dimension of the box which made it jumpy. There is two more ways one can deal with this that also work for IE7.

1) Have a border already attached to the element and simply change the color. This way the mathematics are already included.

div {
   width:100px;
   height:100px;
   background-color: #aaa;
   border: 2px solid #aaa; /* notice the solid */
}

div:hover {
   border: 2px dashed #666;
}

2 ) Compensate your border with a negative margin. This will still add the extra pixels, but the positioning of the element will not be jumpy on

div {
   width:100px;
   height:100px;
   background-color: #aaa;
}

div:hover {
  margin: -2px;
  border: 2px dashed #333;
}

Rhino is what you are looking for.

Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically embedded into Java applications to provide scripting to end users.

Update: Now Nashorn, which is more performant JavaScript Engine for Java, is available with jdk8.

Note: This solution is using pylab, not matplotlib.pyplot

You may try using hist to put your data info along with the fitted curve as below:

import numpy as np
import scipy.stats as stats
import pylab as pl

h = sorted([186, 176, 158, 180, 186, 168, 168, 164, 178, 170, 189, 195, 172,
     187, 180, 186, 185, 168, 179, 178, 183, 179, 170, 175, 186, 159,
     161, 178, 175, 185, 175, 162, 173, 172, 177, 175, 172, 177, 180])  #sorted

fit = stats.norm.pdf(h, np.mean(h), np.std(h))  #this is a fitting indeed

pl.plot(h,fit,'-o')

pl.hist(h,normed=True)      #use this to draw histogram of your data

pl.show()                   #use may also need add this 

This works for me in a markdown cell. Somehow I do not need to mention specifically if its an image or a simple file.

![](files/picture.png)

An updated version of the correct answer for .NET 4.5 would be.

if (MessageBox.Show("Are you sure?", "Confirm", MessageBoxImage.Question) 
    == MessageBoxResult.Yes)  
{
// If yes
}
else  
{
// If no
}

Additionally, if you wanted to bind the button to a command in a view model you could use the following. This is compatible with MvvmLite:

public RelayCommand ShowPopUpCommand
{
   get
   {
   return _showPopUpCommand ??
      (_showPopUpCommand = new RelayCommand(
         () =>
               {
                // Put if statement here
               }
      }));
   }
}

"Baker"

That's because the first one changes your string-reference to point to "Baker". Changing the reference is possible because you passed it via the ref keyword (=> a reference to a reference to a string). The Second call gets a copy of the reference to the string.

string looks some kind of special at first. But string is just a reference class and if you define

string s = "Able";

then s is a reference to a string class that contains the text "Able"! Another assignment to the same variable via

s = "Baker";

does not change the original string but just creates a new instance and let s point to that instance!

You can try it with the following little code example:

string s = "Able";
string s2 = s;
s = "Baker";
Console.WriteLine(s2);

What do you expect? What you will get is still "Able" because you just set the reference in s to another instance while s2 points to the original instance.

EDIT: string is also immutable which means there is simply no method or property that modifies an existing string instance (you can try to find one in the docs but you won't fins any :-) ). All string manipulation methods return a new string instance! (That's why you often get a better performance when using the StringBuilder class)

Welcome to C++11 and rvalue references:

#include <cassert>
#include <string>

using std::string;

void myfunc(string*&& val)
{
    assert(&val);
    assert(val);
    assert(val->c_str());
    // Do stuff to the string pointer
}

// sometime later 
int main () {
    // ...
    string s;
    myfunc(&s);
    // ...
}

Now you have access to the value of the pointer (referred to by val), which is the address of the string.

You can modify the pointer, and no one will care. That is one aspect of what an rvalue is in the first place.

Be careful: The value of the pointer is only valid until myfunc() returns. At last, its a temporary.

You are providing a string representation of a dict to the DataFrame constructor, and not a dict itself. So this is the reason you get that error.

So if you want to use your code, you could do:

df = DataFrame(eval(data))

But better would be to not create the string in the first place, but directly putting it in a dict. Something roughly like:

data = []
for row in result_set:
    data.append({'value': row["tag_expression"], 'key': row["tag_name"]})

But probably even this is not needed, as depending on what is exactly in your result_set you could probably:

• provide this directly to a DataFrame: DataFrame(result_set)
• or use the pandas read_sql_query function to do this for you (see docs on this)

It's worth noting that the distinct keyword in HQL does not map directly to the distinct keyword in SQL.

If you use the distinct keyword in HQL, then sometimes Hibernate will use the distinct SQL keyword, but in some situations it will use a result transformer to produce distinct results. For example when you are using an outer join like this:

select distinct o from Order o left join fetch o.lineItems

It is not possible to filter out duplicates at the SQL level in this case, so Hibernate uses a ResultTransformer to filter duplicates after the SQL query has been performed.

Use the walklevel function.

import os

def walklevel(some_dir, level=1):
    some_dir = some_dir.rstrip(os.path.sep)
    assert os.path.isdir(some_dir)
    num_sep = some_dir.count(os.path.sep)
    for root, dirs, files in os.walk(some_dir):
        yield root, dirs, files
        num_sep_this = root.count(os.path.sep)
        if num_sep + level <= num_sep_this:
            del dirs[:]

It works just like os.walk, but you can pass it a level parameter that indicates how deep the recursion will go.

Let's say that your remote is [email protected] and you want its random_branch branch. The process should be as follows:

1. First check the list of your remotes by

   git remote -v

2. If you don't have the [email protected] remote in the above command's output, you would add it by

   git remote add xyz [email protected]

3. Now you can fetch the contents of that remote by

   git fetch xyz

4. Now checkout the branch of that remote by

   git checkout -b my_copy_random_branch xyz/random_branch

5. Check the branch list by

   git branch -a

The local branch my_copy_random_branch would be tracking the random_branch branch of your remote.

With Hibernate 4.1.6 a new feature is introduced to handle those lazy association problems. When you enable hibernate.enable_lazy_load_no_trans property in hibernate.properties or in hibernate.cfg.xml, you will have no LazyInitializationException any more.

For More refer : https://stackoverflow.com/a/11913404/286588

I've just run into this issue and it was because I had updated a view in my DB and not refreshed the schema in my mapping.

you can try using this

    System.Web.HttpContext.Current.Server.MapPath(path);

or use HostingEnvironment.MapPath

    System.Web.Hosting.HostingEnvironment.MapPath(path);

Have a look at: Greybox

It's an awesome version of lightbox that supports forms, external web pages as well as the traditional images and slideshows. It works perfectly from a link on a webpage.

You will find many information on how to use Greybox and also some great examples. Cheers Kara

File SongsTableSeeder.php should be in database/seeds directory or in its subdirectory.

You need to run:

composer dump-autoload

and then:

php artisan db:seed

or:

php artisan db:seed --class=SongsTableSeeder

It allows servlets to have multiple servlet mappings:

<servlet>
    <servlet-name>Servlet1</servlet-name>
    <servlet-path>foo.Servlet</servlet-path>
</servlet>
<servlet-mapping>
    <servlet-name>Servlet1</servlet-name>
    <url-pattern>/enroll</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Servlet1</servlet-name>
    <url-pattern>/pay</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>Servlet1</servlet-name>
    <url-pattern>/bill</url-pattern>
</servlet-mapping>

It allows filters to be mapped on the particular servlet:

<filter-mapping>
    <filter-name>Filter1</filter-name>
    <servlet-name>Servlet1</servlet-name>
</filter-mapping>

Your proposal would support neither of them. Note that the web.xml is read and parsed only once during application's startup, not on every HTTP request as you seem to think.

Since Servlet 3.0, there's the @WebServlet annotation which minimizes this boilerplate:

@WebServlet("/enroll")
public class Servlet1 extends HttpServlet {

See also:

• How do servlets work? Instantiation, sessions, shared variables and multithreading
• Difference between each instance of servlet and each thread of servlet in servlets?
• Our Servlets wiki page

You can use the slice method:

a = "foobar"
a.slice! "foo"
=> "foo"
a
=> "bar"

there is a non '!' version as well. More info can be seen in the documentation about other versions as well: http://www.ruby-doc.org/core/classes/String.html#method-i-slice-21

MDN suggests that there's a much cleaner way of doing this in modern browsers:

// Assuming we're listening for e.g. a 'change' event on `element`

// Create a new 'change' event
var event = new Event('change');

// Dispatch it.
element.dispatchEvent(event);

If you have a fixed div just absolute position it at 50% from the top and 50% left and negative margin top and left of half the height and width respectively. Adjust to your needs:

div {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 500px;
    height: 300px;
    margin-left: -250px;
    margin-top: -150px;
}

I've found that some of the suggested answers which drill down into the MemberExpression/UnaryExpression don't capture nested/subproperties.

ex) o => o.Thing1.Thing2 returns Thing1 rather than Thing1.Thing2.

This distinction is important if you're trying to work with EntityFramework DbSet.Include(...).

I've found that just parsing the Expression.ToString() seems to work fine, and comparatively quickly. I compared it against the UnaryExpression version, and even getting ToString off of the Member/UnaryExpression to see if that was faster, but the difference was negligible. Please correct me if this is a terrible idea.

The Extension Method

/// <summary>
/// Given an expression, extract the listed property name; similar to reflection but with familiar LINQ+lambdas.  Technique @via https://stackoverflow.com/a/16647343/1037948
/// </summary>
/// <remarks>Cheats and uses the tostring output -- Should consult performance differences</remarks>
/// <typeparam name="TModel">the model type to extract property names</typeparam>
/// <typeparam name="TValue">the value type of the expected property</typeparam>
/// <param name="propertySelector">expression that just selects a model property to be turned into a string</param>
/// <param name="delimiter">Expression toString delimiter to split from lambda param</param>
/// <param name="endTrim">Sometimes the Expression toString contains a method call, something like "Convert(x)", so we need to strip the closing part from the end</param>
/// <returns>indicated property name</returns>
public static string GetPropertyName<TModel, TValue>(this Expression<Func<TModel, TValue>> propertySelector, char delimiter = '.', char endTrim = ')') {

    var asString = propertySelector.ToString(); // gives you: "o => o.Whatever"
    var firstDelim = asString.IndexOf(delimiter); // make sure there is a beginning property indicator; the "." in "o.Whatever" -- this may not be necessary?

    return firstDelim < 0
        ? asString
        : asString.Substring(firstDelim+1).TrimEnd(endTrim);
}//--   fn  GetPropertyNameExtended

(Checking for the delimiter might even be overkill)

Demo (LinqPad)

Demonstration + Comparison code -- https://gist.github.com/zaus/6992590

The most easiest way would be to use unfactor function from package varhandle which can accept a factor vector or even a dataframe:

unfactor(your_factor_variable)

This example can be a quick start:

x <- rep(c("a", "b", "c"), 20)
y <- rep(c(1, 1, 0), 20)

class(x)  # -> "character"
class(y)  # -> "numeric"

x <- factor(x)
y <- factor(y)

class(x)  # -> "factor"
class(y)  # -> "factor"

library(varhandle)
x <- unfactor(x)
y <- unfactor(y)

class(x)  # -> "character"
class(y)  # -> "numeric"

You can also use it on a dataframe. For example the iris dataset:

sapply(iris, class)

Sepal.Length  Sepal.Width Petal.Length  Petal.Width      Species
   "numeric"    "numeric"    "numeric"    "numeric"     "factor"

# load the package
library("varhandle")
# pass the iris to unfactor
tmp_iris <- unfactor(iris)
# check the classes of the columns
sapply(tmp_iris, class)

Sepal.Length  Sepal.Width Petal.Length  Petal.Width      Species
   "numeric"    "numeric"    "numeric"    "numeric"  "character"

# check if the last column is correctly converted
tmp_iris$Species

  [1] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"    
  [6] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"    
 [11] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"    
 [16] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"    
 [21] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"    
 [26] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"    
 [31] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"
 [36] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"
 [41] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"
 [46] "setosa"     "setosa"     "setosa"     "setosa"     "setosa"
 [51] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [56] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [61] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [66] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [71] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [76] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [81] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [86] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [91] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
 [96] "versicolor" "versicolor" "versicolor" "versicolor" "versicolor"
[101] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[106] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[111] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[116] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[121] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[126] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[131] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[136] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[141] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"
[146] "virginica"  "virginica"  "virginica"  "virginica"  "virginica"

If you really want to kill a process immediately, you send it a KILL signal instead of a TERM signal (the latter a request to stop, the first will take effect immediately without any cleanup). It is easy to do:

kill -KILL <pid>

Be aware however that depending on the program you are stopping, its state may get badly corrupted when doing so. You normally only want to send a KILL signal when normal termination does not work. I'm wondering what the underlying problem is that you try to solve and whether killing is the right solution.

The difference is ternary operator

• You can use

return condition ? someData : Promise.reject(new Error('not OK'))

• You can't use

return condition ? someData  : throw new Error('not OK')

Building on the answer given above with the single line Tree using defaultdict, you can make it a class. This will allow you to set up defaults in a constructor and build on it in other ways.

class Tree(defaultdict):
    def __call__(self):
        return Tree(self)

    def __init__(self, parent):
        self.parent = parent
        self.default_factory = self

This example allows you to make a back reference so that each node can refer to its parent in the tree.

>>> t = Tree(None)
>>> t[0][1][2] = 3
>>> t
defaultdict(defaultdict(..., {...}), {0: defaultdict(defaultdict(..., {...}), {1: defaultdict(defaultdict(..., {...}), {2: 3})})})
>>> t[0][1].parent
defaultdict(defaultdict(..., {...}), {1: defaultdict(defaultdict(..., {...}), {2: 3})})
>>> t2 = t[0][1]
>>> t2
defaultdict(defaultdict(..., {...}), {2: 3})
>>> t2[2]
3

Next, you could even override __setattr__ on class Tree so that when reassigning the parent, it removes it as a child from that parent. Lots of cool stuff with this pattern.

Android Studio 2.x.x
Moved under Editor -> General

Older Versions
Using windows 7 and Android Studio 1.0.x it took me a while to figure out the steps provided in the answer.
To help further visitors save some time, here is the way I did it:
Go to File -> Settings or press CTRL+ALT+S.
The following window will open and check Show quick doc on mouse move under IDE Settings -> Editor.

Or just press CTRL and hover your move over your method, class ...

TL:DR
row lock = A$5
column lock = $A5
Both = $A$5

Below are examples of how to use the Excel lock reference $ when creating your formulas

To prevent increments when moving from one row to another put the $ after the column letter and before the row number. e.g. A$5

To prevent increments when moving from one column to another put the $ before the row number. e.g. $A5

To prevent increments when moving from one column to another or from one row to another put the $ before the row number and before the column letter. e.g. $A$5

Using the lock reference will also prevent increments when dragging cells over to duplicate calculations.

Use an ArrayList if in .NET 1.x, or a List<yourtype> if in .NET 2.0 or 3.x.

Search for them in System.Collections and System.Collections.Generics.

$(document).ready(function(){
$('#ckbCheckAll').click(function(event) { 
            if($(this).is(":checked")) {
                $('.checkBoxClass').each(function(){
                    $(this).prop("checked",true);
                });
            }
            else{
                $('.checkBoxClass').each(function(){
                    $(this).prop("checked",false);
                });
            }   
    }); 
    });

C11 standard (n1570) §6.2.2.3 al1 p55 says :

A pointer to void may be converted to or from a pointer to any object type. A pointer to any object type may be converted to a pointer to void and back again; the result shall compare equal to the original pointer.

You can use this generic pointer to store a pointer to any object type, but you can't use usual arithmetic operations with it and you can't deference it.

I created a more comprehensive and cleaner version that some people might find useful for remembering which name corresponds to which value. I used Chrome Dev Tool's color code and labels are organized symmetrically to pick up analogies faster:

• Note 1: clientLeft also includes the width of the vertical scroll bar if the direction of the text is set to right-to-left (since the bar is displayed to the left in that case)

• Note 2: the outermost line represents the closest positioned parent (an element whose position property is set to a value different than static or initial). Thus, if the direct container isn’t a positioned element, then the line doesn’t represent the first container in the hierarchy but another element higher in the hierarchy. If no positioned parent is found, the browser will take the html or body element as reference

Hope somebody finds it useful, just my 2 cents ;)

Try this:

File\Other Settings\Preferences for New Projects\Teminal\Start Directory

I just tried with PHP 5.2, and that constant seems to exists :

var_dump(PDO::MYSQL_ATTR_INIT_COMMAND);

Gives me :

int 1002

But it seems there is a bug in PHP 5.3, that causes this constant to not exists anymore -- or, at least, not when the mysqlnd driver is used (and it's the one that's configured by default)

I suppose a temporary solution, as suggested on this bug report, could be to directly use the integer 1002 value, instead of the contant...

But note that you should go back to using the constant as soon as possible -- as this makes the code easier to understand.

I had made few changes in the Config start-up file, which caused this issue. When I looked in the "mongo.log" file, it said

"Cannot start server. Detected data files in E:\Mongo\data\db created by storage engine 'wiredTiger'. The configured storage engine is 'mmapv1'., terminating"

Resetting the storage engine back to 'wiredTiger' resolved the issue for me. Hope this helps others.

 items[items.indexOf(3452)] = 1010

great for simple swaps. try the snippet below

const items = Array(523, 3452, 334, 31, 5346);
console.log(items)

items[items.indexOf(3452)] = 1010
console.log(items)

It really depends on what you're going for:

• #if DEBUG: The code in here won't even reach the IL on release.
• [Conditional("DEBUG")]: This code will reach the IL, however calls to the method will be omitted unless DEBUG is set when the caller is compiled.

Personally I use both depending on the situation:

Conditional("DEBUG") Example: I use this so that I don't have to go back and edit my code later during release, but during debugging I want to be sure I didn't make any typos. This function checks that I type a property name correctly when trying to use it in my INotifyPropertyChanged stuff.

[Conditional("DEBUG")]
[DebuggerStepThrough]
protected void VerifyPropertyName(String propertyName)
{
    if (TypeDescriptor.GetProperties(this)[propertyName] == null)
        Debug.Fail(String.Format("Invalid property name. Type: {0}, Name: {1}",
            GetType(), propertyName));
}

You really don't want to create a function using #if DEBUG unless you are willing to wrap every call to that function with the same #if DEBUG:

#if DEBUG
    public void DoSomething() { }
#endif

    public void Foo()
    {
#if DEBUG
        DoSomething(); //This works, but looks FUGLY
#endif
    }

versus:

[Conditional("DEBUG")]
public void DoSomething() { }

public void Foo()
{
    DoSomething(); //Code compiles and is cleaner, DoSomething always
                   //exists, however this is only called during DEBUG.
}

#if DEBUG example: I use this when trying to setup different bindings for WCF communication.

#if DEBUG
        public const String ENDPOINT = "Localhost";
#else
        public const String ENDPOINT = "BasicHttpBinding";
#endif

In the first example, the code all exists, but is just ignored unless DEBUG is on. In the second example, the const ENDPOINT is set to "Localhost" or "BasicHttpBinding" depending on if DEBUG is set or not.

Update: I am updating this answer to clarify an important and tricky point. If you choose to use the ConditionalAttribute, keep in mind that calls are omitted during compilation, and not runtime. That is:

MyLibrary.dll

[Conditional("DEBUG")]
public void A()
{
    Console.WriteLine("A");
    B();
}

[Conditional("DEBUG")]
public void B()
{
    Console.WriteLine("B");
}

When the library is compiled against release mode (i.e. no DEBUG symbol), it will forever have the call to B() from within A() omitted, even if a call to A() is included because DEBUG is defined in the calling assembly.

This will work in C# 7. As of this writing, it has yet to be released. But if I understand this correctly, this code will work.

switch(message)
{
    case Contains("test"):
        Console.WriteLine("yes");
        break;
    case Contains("test2"):
        Console.WriteLine("yes for test2");
        break;
    default:
        Console.WriteLine("No matches found!");
}

Source: https://blogs.msdn.microsoft.com/dotnet/2016/08/24/whats-new-in-csharp-7-0/

You can use exceptional handling as str.digit will only work for integers and can fail for something like this too:

>>> str.isdigit(' 1')
False

Using a generator function:

def solve(lis):                                        
    for x in lis:
        try:
            yield float(x)
        except ValueError:    
            pass

>>> mylist = ['1','orange','2','3','4','apple', '1.5', '2.6']
>>> list(solve(mylist))                                    
[1.0, 2.0, 3.0, 4.0, 1.5, 2.6]   #returns converted values

or may be you wanted this:

def solve(lis):
    for x in lis:
        try:
            float(x)
            return True
        except:
            return False
...         
>>> mylist = ['1','orange','2','3','4','apple', '1.5', '2.6']
>>> [x for x in mylist if solve(x)]
['1', '2', '3', '4', '1.5', '2.6']

or using ast.literal_eval, this will work for all types of numbers:

>>> from ast import literal_eval
>>> def solve(lis):
    for x in lis:
        try:
            literal_eval(x)
            return True
        except ValueError:   
             return False
...         
>>> mylist=['1','orange','2','3','4','apple', '1.5', '2.6', '1+0j']
>>> [x for x in mylist if solve(x)]                               
['1', '2', '3', '4', '1.5', '2.6', '1+0j']

It is syntax error because you did not write parenthesis

if you write

Select datetime('now') then it will give you utc time but if you this write it query then you must add parenthesis before this so (datetime('now')) for UTC Time. for local time same Select datetime('now','localtime') for query

(datetime('now','localtime'))

CommonJS is more than that - it's a project to define a common API and ecosystem for JavaScript. One part of CommonJS is the Module specification. Node.js and RingoJS are server-side JavaScript runtimes, and yes, both of them implement modules based on the CommonJS Module spec.

AMD (Asynchronous Module Definition) is another specification for modules. RequireJS is probably the most popular implementation of AMD. One major difference from CommonJS is that AMD specifies that modules are loaded asynchronously - that means modules are loaded in parallel, as opposed to blocking the execution by waiting for a load to finish.

AMD is generally more used in client-side (in-browser) JavaScript development due to this, and CommonJS Modules are generally used server-side. However, you can use either module spec in either environment - for example, RequireJS offers directions for running in Node.js and browserify is a CommonJS Module implementation that can run in the browser.

For GitLab users I've put up a gist on how I migrated from SVN here:

https://gist.github.com/leftclickben/322b7a3042cbe97ed2af

Steps to migrate from SVN to GitLab

Setup

• SVN is hosted at svn.domain.com.au.
• SVN is accessible via http (other protocols should work).
• GitLab is hosted at git.domain.com.au and:
  • A group is created with the namespace dev-team.
  • At least one user account is created, added to the group, and has an SSH key for the account being used for the migration (test using ssh [email protected]).
  • The project favourite-project is created in the dev-team namespace.
• The file users.txt contains the relevant user details, one user per line, of the form username = First Last <[email protected]>, where username is the username given in SVN logs. (See first link in References section for details, in particular answer by user Casey).

Versions

• subversion version 1.6.17 (r1128011)
• git version 1.9.1
• GitLab version 7.2.1 ff1633f
• Ubuntu server 14.04

Commands

bash
git svn clone --stdlayout --no-metadata -A users.txt 
http://svn.domain.com.au/svn/repository/favourite-project
cd favourite-project
git remote add gitlab [email protected]:dev-team/favourite-project.git
git push --set-upstream gitlab master

That's it! Reload the project page in GitLab web UI and you will see all commits and files now listed.

Notes

• If there are unknown users, the git svn clone command will stop, in which case, update users.txt, cd favourite-project and git svn fetch will continue from where it stopped.
• The standard trunk-tags-branches layout for SVN repository is required.
• The SVN URL given to the git svn clone command stops at the level immediately above trunk/, tags/ and branches/.
• The git svn clone command produces a lot of output, including some warnings at the top; I ignored the warnings.

Using the accepted answer you have to access each record by using Customers[i].customer, and you need an extra CustomerJson class, which is a little annoying. If you don't want to do that, you can use the following:

public class CustomerList
{
    [JsonConverter(typeof(MyListConverter))]
    public List<Customer> customer { get; set; }
}

Note that I'm using a List<>, not an Array. Now create the following class:

class MyListConverter : JsonConverter
{
    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        var token = JToken.Load(reader);
        var list = Activator.CreateInstance(objectType) as System.Collections.IList;
        var itemType = objectType.GenericTypeArguments[0];
        foreach (var child in token.Values())
        {
            var childToken = child.Children().First();
            var newObject = Activator.CreateInstance(itemType);
            serializer.Populate(childToken.CreateReader(), newObject);
            list.Add(newObject);
        }
        return list;
    }

    public override bool CanConvert(Type objectType)
    {
        return objectType.IsGenericType && (objectType.GetGenericTypeDefinition() == typeof(List<>));
    }
    public override bool CanWrite => false;
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new NotImplementedException();
}

Since the question asked for either jQuery or vanilla JS, here's an answer with vanilla JS.

I've added some CSS to the demo below to change the button's font color to red when its aria-expanded is set to true

const button = document.querySelector('button');_x000D_
_x000D_
button.addEventListener('click', () => {_x000D_
  button.ariaExpanded = !JSON.parse(button.ariaExpanded);_x000D_
})

button[aria-expanded="true"] {_x000D_
  color: red;_x000D_
}

<button type="button" aria-expanded="false">Click me!</button>

This is actually javascript but related/relevant because .querySelectorAll targets by CSS syntax:

var i_will_target_self = document.querySelectorAll("ul.menu li a#example")

this example uses css to target links in a menu with id = "example"

that creates a variable which is a collection of the elements we want to change, but we still have actually change them by setting the new target ("_blank"):

for (var i = 0; i < 5; i++) {
i_will_target_self[i].target = "_blank";
}

That code assumes that there are 5 or less elements. That can be changed easily by changing the phrase "i < 5."

read more here: http://xahlee.info/js/js_get_elements.html

I found this really useful:

1. Find the MySQL process in Services under Control Panel -> Administration Tools
2. Right mouse click and choose Properties
3. Click and select the Path to executable and see if it contains the path to the my.ini/my.cfg

From the documentation about ASP.NET Web Project Folder Structure in MSDN:

You can keep your Web project's files in any folder structure that is convenient for your application. To make it easier to work with your application, ASP.NET reserves certain file and folder names that you can use for specific types of content.

App_Data contains application data files including .mdf database files, XML files, and other data store files. The App_Data folder is used by ASP.NET to store an application's local database, such as the database for maintaining membership and role information. For more information, see Introduction to Membership and Understanding Role Management.

Well, I think that there are simple solutions than mentioned here on this page! first of all, let's make an example:

You have 1 DIV and want to hide thas DIV on Desktop and show on Mobile (or vice versa). So, let's presume that the DIV position placed in the Head section and named as header_div.

The global code in your CSS file will be: (for the same DIV):

.header_div {
    display: none;
}

@media all and (max-width: 768px){
.header_div {
    display: block;
}
}

So simple and no need to make 2 div's one for desktop and the other for mobile.

Hope this helps.

Thank you.

You can assign values in the loop using df.set_value:

for i, row in df.iterrows():
    ifor_val = something
    if <condition>:
        ifor_val = something_else
    df.set_value(i,'ifor',ifor_val)

If you don't need the row values you could simply iterate over the indices of df, but I kept the original for-loop in case you need the row value for something not shown here.

update

df.set_value() has been deprecated since version 0.21.0 you can use df.at() instead:

for i, row in df.iterrows():
    ifor_val = something
    if <condition>:
        ifor_val = something_else
    df.at[i,'ifor'] = ifor_val

I had the same problem with openCV on Raspberry Pi... don't know if this can solve your problem, but what worked for me was

import time
import cv2


cap = cv2.VideoCapture(0)

cap.set(3,1280)

cap.set(4,1024)

time.sleep(2)

cap.set(15, -8.0)

the time you have to use can be different

Update: Feb 2017

Here are the COMPLETE STEPS for remote access of MySQL (deployed on Amazon EC2):-

1. Add MySQL to inbound rules.

Go to security group of your ec2 instance -> edit inbound rules -> add new rule -> choose MySQL/Aurora and source to Anywhere.

2. Add bind-address = 0.0.0.0 to my.cnf

In instance console:

sudo vi /etc/mysql/my.cnf

this will open vi editor.
in my.cnf file, after [mysqld] add new line and write this:

bind-address = 0.0.0.0

Save file by entering :wq(enter)

now restart MySQL:

sudo /etc/init.d/mysqld restart

3. Create a remote user and grant privileges.

login to MySQL:

mysql -u root -p mysql (enter password after this)

Now write following commands:

CREATE USER 'jerry'@'localhost' IDENTIFIED BY 'jerrypassword';

CREATE USER 'jerry'@'%' IDENTIFIED BY 'jerrypassword';

GRANT ALL PRIVILEGES ON *.* to jerry@localhost IDENTIFIED BY 'jerrypassword' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* to jerry@'%' IDENTIFIED BY 'jerrypassword' WITH GRANT OPTION;

FLUSH PRIVILEGES;

EXIT;

After this, MySQL dB can be remotely accessed by entering public dns/ip of your instance as MySQL Host Address, username as jerry and password as jerrypassword. (Port is set to default at 3306)

You can do

git config http.sslVerify "false"

in your specific repo to disable SSL certificate checking for that repo only.

yield(): yield method is used to pause the execution of currently running process so that other waiting thread with the same priority will get CPU to execute.Threads with lower priority will not be executed on yield. if there is no waiting thread then this thread will start its execution.

join(): join method stops currently executing thread and wait for another to complete on which in calls the join method after that it will resume its own execution.

For detailed explanation, see this link.

You can do this easily with ReSharper 8 or later. The ctorf, ctorp, and ctorfp snippets generate constructors that populate all the fields, properties, or fields and properties of a class.

You can just use the method uniq. Assuming your array is ary, call:

ary.uniq{|x| x.user_id}

and this will return a set with unique user_ids.

You can use the Django-Truncate library to delete all data of a table without destroying the table structure.

Example:

1. First, install django-turncate using your terminal/command line:

pip install django-truncate

2. Add "django_truncate" to your INSTALLED_APPS in the settings.py file:

INSTALLED_APPS = [
    ...
    'django_truncate',
]

3. Use this command in your terminal to delete all data of the table from the app.

python manage.py truncate --apps app_name --models table_name

I have a angular 5 + spring boot app(application.properties 1.3+) with help of compression(link attached below) was able to reduce the size of main.bundle.ts size from 2.7 MB to 530 KB.

Also by default --aot and --build-optimizer are enabled with --prod mode you need not specify those separately.

https://stackoverflow.com/a/28216983/9491345

Make sure that the directory exists, you have permission to access it and add the file to the path to write the log:

File file = new File("D:/Data/" + item.getFileName());

JOIN t2 ON (t2.id = t1.id AND t2.date = t1.date)

I think you can use the nrows parameter. From the docs:

nrows : int, default None

    Number of rows of file to read. Useful for reading pieces of large files

which seems to work. Using one of the standard large test files (988504479 bytes, 5344499 lines):

In [1]: import pandas as pd

In [2]: time z = pd.read_csv("P00000001-ALL.csv", nrows=20)
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.00 s

In [3]: len(z)
Out[3]: 20

In [4]: time z = pd.read_csv("P00000001-ALL.csv")
CPU times: user 27.63 s, sys: 1.92 s, total: 29.55 s
Wall time: 30.23 s

we are creating a simple function as

callBackFunction (data, function ( err, response ){
     console.log(response)
}) 

// callbackfunction 
function callBackFuntion (data, callback){
    //write your logic and return your result as
callback("",result) //if not error
callback(error, "") //if error
}

Placing @EdChum's very nice answer into a function count_unique_index. The unique method only works on pandas series, not on data frames. The function below reproduces the behavior of the unique function in R:

unique returns a vector, data frame or array like x but with duplicate elements/rows removed.

And adds a count of the occurrences as requested by the OP.

df1 = pd.DataFrame({'A':['yes','yes','yes','yes','no','no','yes','yes','yes','no'],                                                                                             
                    'B':['yes','no','no','no','yes','yes','no','yes','yes','no']})                                                                                               
def count_unique_index(df, by):                                                                                                                                                 
    return df.groupby(by).size().reset_index().rename(columns={0:'count'})                                                                                                      

count_unique_index(df1, ['A','B'])                                                                                                                                              
     A    B  count                                                                                                                                                                  
0   no   no      1                                                                                                                                                                  
1   no  yes      2                                                                                                                                                                  
2  yes   no      4                                                                                                                                                                  
3  yes  yes      3

First off, EC2 and Elastic Compute Cloud are the same thing.

Next, AWS encompasses the range of Web Services that includes EC2 and Elastic Beanstalk. It also includes many others such as S3, RDS, DynamoDB, and all the others.

EC2

EC2 is Amazon's service that allows you to create a server (AWS calls these instances) in the AWS cloud. You pay by the hour and only what you use. You can do whatever you want with this instance as well as launch n number of instances.

Elastic Beanstalk

Elastic Beanstalk is one layer of abstraction away from the EC2 layer. Elastic Beanstalk will setup an "environment" for you that can contain a number of EC2 instances, an optional database, as well as a few other AWS components such as a Elastic Load Balancer, Auto-Scaling Group, Security Group. Then Elastic Beanstalk will manage these items for you whenever you want to update your software running in AWS. Elastic Beanstalk doesn't add any cost on top of these resources that it creates for you. If you have 10 hours of EC2 usage, then all you pay is 10 compute hours.

Running Wordpress

For running Wordpress, it is whatever you are most comfortable with. You could run it straight on a single EC2 instance, you could use a solution from the AWS Marketplace, or you could use Elastic Beanstalk.

What to pick?

In the case that you want to reduce system operations and just focus on the website, then Elastic Beanstalk would be the best choice for that. Elastic Beanstalk supports a PHP stack (as well as others). You can keep your site in version control and easily deploy to your environment whenever you make changes. It will also setup an Autoscaling group which can spawn up more EC2 instances if traffic is growing.

Here's the first result off of Google when searching for "elastic beanstalk wordpress": https://www.otreva.com/blog/deploying-wordpress-amazon-web-services-aws-ec2-rds-via-elasticbeanstalk/

I prefer to create queries with SQLAlchemy, and then make a DataFrame from it. SQLAlchemy makes it easier to combine SQL conditions Pythonically if you intend to mix and match things over and over.

from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Table
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from pandas import DataFrame
import datetime

# We are connecting to an existing service
engine = create_engine('dialect://user:pwd@host:port/db', echo=False)
Session = sessionmaker(bind=engine)
session = Session()
Base = declarative_base()

# And we want to query an existing table
tablename = Table('tablename', 
    Base.metadata, 
    autoload=True, 
    autoload_with=engine, 
    schema='ownername')

# These are the "Where" parameters, but I could as easily 
# create joins and limit results
us = tablename.c.country_code.in_(['US','MX'])
dc = tablename.c.locn_name.like('%DC%')
dt = tablename.c.arr_date >= datetime.date.today() # Give me convenience or...

q = session.query(tablename).\
            filter(us & dc & dt) # That's where the magic happens!!!

def querydb(query):
    """
    Function to execute query and return DataFrame.
    """
    df = DataFrame(query.all());
    df.columns = [x['name'] for x in query.column_descriptions]
    return df

querydb(q)

If you have an object that can be converted to {key: 'stringValue'} pairs, you can use this shortcut to convert it:

this._Http.get(myUrlString, {params: {...myParamsObject}});

I just love the spread syntax!

I know this post is old but I'd like to add that the solutions assume admin privs. If you don't have those you can:

Go to control panel, type path (this is Windows 7 now so that's in the Search box) and click "Edit Environment variables for your account". You'll now see the Environment Variable dialog with "User variables" on the top and "System variables" below.

You can, as a user, click the top "New" button and add:

Variable name: PATH
Variable value: C:\Python27

(no spaces anywhere) and click OK. Once your command prompt is restarted, any PATH in the User variables is appended to the end of the System Path. It doesn't replace the PATH in any other way.

If you want a specific full path set up, you're better off creating a batch file like this little one:

@echo off
PATH C:\User\Me\Programs\mingw\bin;C:\User\Me\Programs;C:\Windows\system32
title Compiler Environment - %Username%@%Computername%
cmd

Call it "compiler.bat" or whatever and double click to start it. Or link to it. Or pin it etc...

If you had installed Visual studio 2015 by the quick install, vcvarsall.bat is not there. But you can go to programm and fonctionalities, and modify the installation in order to install c++ tools, then vcvarsall.bat will be present.

The next version of Windows (Windows 7) will be able to snap windows to the left or right half of the screen. Doesn't help right now, but it's something to look forward to.

http://arstechnica.com/news.ars/post/20081028-first-look-at-windows-7.html

For implementing the breadth first search, you should use a queue. You should push the children of a node to the queue (left then right) and then visit the node (print data). Then, yo should remove the node from the queue. You should continue this process till the queue becomes empty. You can see my implementation of the BFS here: https://github.com/m-vahidalizadeh/foundations/blob/master/src/algorithms/TreeTraverse.java

<?php
print date('M d, Y', strtotime('+7 days') );

A solution written in pure Bash:

#!/bin/bash

sometext="something1:    +12.0   (some unnecessary trailing data (this must go))
something2:    +15.5   (some more unnecessary trailing data)
something4:    +9.0   (some other unnecessary data)
something1:    +13.5  (blah blah blah)"

a=()
while read -r a1 a2 a3; do
    # we can add some code here to check valid values or modify them
    a+=("${a2}")
done <<< "${sometext}"
# between parenthesis to modify IFS for the current statement only
(IFS=',' ; printf '%s: %s\n' "Result" "${a[*]}")

Result: +12.0,+15.5,+9.0,+13.5

I was curious about performance of various methods for a single int in the range [0, 255], so I decided to do some timing tests.

Based on the timings below, and from the general trend I observed from trying many different values and configurations, struct.pack seems to be the fastest, followed by int.to_bytes, bytes, and with str.encode (unsurprisingly) being the slowest. Note that the results show some more variation than is represented, and int.to_bytes and bytes sometimes switched speed ranking during testing, but struct.pack is clearly the fastest.

Results in CPython 3.7 on Windows:

Testing with 63:
bytes_: 100000 loops, best of 5: 3.3 usec per loop
to_bytes: 100000 loops, best of 5: 2.72 usec per loop
struct_pack: 100000 loops, best of 5: 2.32 usec per loop
chr_encode: 50000 loops, best of 5: 3.66 usec per loop

Test module (named int_to_byte.py):

"""Functions for converting a single int to a bytes object with that int's value."""

import random
import shlex
import struct
import timeit

def bytes_(i):
    """From Tim Pietzcker's answer:
    https://stackoverflow.com/a/21017834/8117067
    """
    return bytes([i])

def to_bytes(i):
    """From brunsgaard's answer:
    https://stackoverflow.com/a/30375198/8117067
    """
    return i.to_bytes(1, byteorder='big')

def struct_pack(i):
    """From Andy Hayden's answer:
    https://stackoverflow.com/a/26920966/8117067
    """
    return struct.pack('B', i)

# Originally, jfs's answer was considered for testing,
# but the result is not identical to the other methods
# https://stackoverflow.com/a/31761722/8117067

def chr_encode(i):
    """Another method, from Quuxplusone's answer here:
    https://codereview.stackexchange.com/a/210789/140921

    Similar to g10guang's answer:
    https://stackoverflow.com/a/51558790/8117067
    """
    return chr(i).encode('latin1')

converters = [bytes_, to_bytes, struct_pack, chr_encode]

def one_byte_equality_test():
    """Test that results are identical for ints in the range [0, 255]."""
    for i in range(256):
        results = [c(i) for c in converters]
        # Test that all results are equal
        start = results[0]
        if any(start != b for b in results):
            raise ValueError(results)

def timing_tests(value=None):
    """Test each of the functions with a random int."""
    if value is None:
        # random.randint takes more time than int to byte conversion
        # so it can't be a part of the timeit call
        value = random.randint(0, 255)
    print(f'Testing with {value}:')
    for c in converters:
        print(f'{c.__name__}: ', end='')
        # Uses technique borrowed from https://stackoverflow.com/q/19062202/8117067
        timeit.main(args=shlex.split(
            f"-s 'from int_to_byte import {c.__name__}; value = {value}' " +
            f"'{c.__name__}(value)'"
        ))

You can use any one of these polyfills:

• https://github.com/jamesallardice/Placeholders.js (doesn't support password fields)
• https://github.com/chemerisuk/better-placeholder-polyfill

These scripts will add support for the placeholder attribute in browsers that do not support it, and they do not require jQuery!

What you are saying is in conflict with what it says in the MSDN library at this location:

http://msdn.microsoft.com/en-us/library/system.runtime.serialization.datacontractserializer.aspx

I don't see any mention of the SP1 feature you mention.

pip can install a package ignoring the cache, like this

pip --no-cache-dir install scipy

To check if a value is Int in Mysql, we can use the following query. This query will give the rows with Int values

SELECT col1 FROM table WHERE concat('',col * 1) = col;

The above examples are quite helpful. But, if we want to check if a particular row is having a particular value or not. If yes then delete and break and in case of no value found straight throw error. Below code works:

foreach (DataRow row in dtData.Rows)
        {
            if (row["Column_name"].ToString() == txtBox.Text)
            {
                // Getting the sequence number from the textbox.
                string strName1 = txtRowDeletion.Text;

                // Creating the SqlCommand object to access the stored procedure
                // used to get the data for the grid.
                string strDeleteData = "Sp_name";
                SqlCommand cmdDeleteData = new SqlCommand(strDeleteData, conn);
                cmdDeleteData.CommandType = System.Data.CommandType.StoredProcedure;

                // Running the query.
                conn.Open();
                cmdDeleteData.ExecuteNonQuery();
                conn.Close();

                GetData();

                dtData = (DataTable)Session["GetData"];
                BindGrid(dtData);

                lblMsgForDeletion.Text = "The row successfully deleted !!" + txtRowDeletion.Text;
                txtRowDeletion.Text = "";
                break;
            }
            else
            {
                lblMsgForDeletion.Text = "The row is not present ";
            }
        }

We had a very similar issue whereby a client's website was trying to connect to our Web API service and getting that same message. This started happening completely out of the blue when there had been no code changes or Windows updates on the server where IIS was running.

In our case it turned out that the calling website was using a version of .Net that only supported TLS 1.0 and for some reason the server where our IIS was running stopped appeared to have stopped accepting TLS 1.0 calls. To diagnose that we had to explicitly enable TLS via the registry on the IIS's server and then restart that server. These are the reg keys:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS
    1.0\Client] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS
    1.0\Server] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS
    1.1\Client] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS
    1.1\Server] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS
    1.2\Client] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS
    1.2\Server] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001

If that doesn't do it, you could also experiment with adding the entry for SSL 2.0:


    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 2.0\Client]
    "DisabledByDefault"=dword:00000000
    "Enabled"=dword:00000001

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 2.0\Server]
    "DisabledByDefault"=dword:00000000
    "Enabled"=dword:00000001

My answer to another question here has this powershell script that we used to add the entries:

NOTE: Enabling old security protocols is not a good idea, the right answer in our case was to get the client website to update it's code to use TLS 1.2, but the registry entries above can help diagnose the issue in the first place.

I think killing the process which is uses that port is more easy to handle than changing the ports in config files. Here is how to do it in Windows. You can follow same procedure to Linux but different commands. Run command prompt as Administrator. Then type below command to find out all of processes using the port.

netstat -ano

There will be plenty of processes using various ports. So to get only port we need use findstr like below (here I use port 80)

netstat -ano | findstr 80

this will gave you result like this

TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       7964

Last number is the process ID of the process. so what we have to do is kill the process using PID we can use taskkill command for that.

taskkill /PID 7964 /F

Run your server again. This time it will be able to run. This can uses for Mysql server too.

@jason-mccreary is totally right. Besides I recommend you this code to get more info in case of malfunction:

$rest = curl_exec($crl);

if ($rest === false)
{
    // throw new Exception('Curl error: ' . curl_error($crl));
    print_r('Curl error: ' . curl_error($crl));
}

curl_close($crl);
print_r($rest);

EDIT 1

To debug you can set CURLOPT_HEADER to true to check HTTP response with firebug::net or similar.

curl_setopt($crl, CURLOPT_HEADER, true);

EDIT 2

About Curl error: SSL certificate problem, verify that the CA cert is OK try adding this headers (just to debug, in a production enviroment you should keep these options in true):

curl_setopt($crl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($crl, CURLOPT_SSL_VERIFYPEER, false);

When you only need to check for equality, you can also simply use the in operator to do a membership test in a sequence of accepted elements:

if message.value[0] in ('/', '\\'):
    do_stuff()

I created a gem to make URI encoding stuff cleaner to use in your code. It takes care of binary encoding for you.

Run gem install uri-handler, then use:

require 'uri-handler'

str = "\x12\x34\x56\x78\x9a\xbc\xde\xf1\x23\x45\x67\x89\xab\xcd\xef\x12\x34\x56\x78\x9a".to_uri
# => "%124Vx%9A%BC%DE%F1%23Eg%89%AB%CD%EF%124Vx%9A"

It adds the URI conversion functionality into the String class. You can also pass it an argument with the optional encoding string you would like to use. By default it sets to encoding 'binary' if the straight UTF-8 encoding fails.

For the record:

"Data at the root level is invalid" means that you have attempted to parse something that is not an XML document. It doesn't even start to look like an XML document. It usually means just what you found: you're parsing something like the string "C:\inetpub\wwwroot\mysite\officelist.xml".

C has a boolean type: bool (at least for the last 10(!) years)

Include stdbool.h and true/false will work as expected.

The CSS :active state means the active state of the clicked link - the moment when you clicked on it, but not released the mouse button yet, for example. It doesn't know which page you're on and can't apply any styles to the menu items.

To fix your problem you have to create a class and add it manually to the current page's menu:

a.active { color: #f00 }

<ul>
    <li><a href="index.php" class="active">HOME</a></li>
    <li><a href="two.php">PORTFOLIO</a></li>
    <li><a href="three.php">ABOUT</a></li>
    <li><a href="four.php">CONTACT</a></li>
    <li><a href="five.php">SHOP</a></li>
</ul>

Starting from Bootstrap v4 you can simply add the following to your div class attribute: mt-2 (margin top 2)

<div class="mt-2 col-md-12">
        This will have a two-point top margin!
</div>

More examples are given in the docs: Bootstrap v4 docs

Try c.ToString("F6");

(For a full explanation of numeric formatting, see MSDN)

I keep track of previous states in $rootScope, so whenever in need I will just call the below line of code.

$state.go($rootScope.previousState);

In App.js:

$rootScope.$on('$stateChangeSuccess', function(event, to, toParams, from, fromParams) {
  $rootScope.previousState = from.name;
});

var CommentData= "u_id=" + $(this).attr("u_id") + "&post_id=" + $(this).attr("p_id") + "&comment=" + $(this).val();

You can actually accomplish this without JavaScript, using only JSF's rendered attribute, by enclosing the elements to be shown/hidden in a component that can itself be re-rendered, such as a panelGroup, at least in JSF2. For example, the following JSF code shows or hides one or both of two dropdown lists depending on the value of a third. An AJAX event is used to update the display:

<h:selectOneMenu value="#{workflowProcEditBean.performedBy}">
    <f:selectItem itemValue="O" itemLabel="Originator" />
    <f:selectItem itemValue="R" itemLabel="Role" />
    <f:selectItem itemValue="E" itemLabel="Employee" />
    <f:ajax event="change" execute="@this" render="perfbyselection" />
</h:selectOneMenu>
<h:panelGroup id="perfbyselection">
    <h:selectOneMenu id="performedbyroleid" value="#{workflowProcEditBean.performedByRoleID}"
                     rendered="#{workflowProcEditBean.performedBy eq 'R'}">
        <f:selectItem itemLabel="- Choose One -" itemValue="" />
        <f:selectItems value="#{workflowProcEditBean.roles}" />
    </h:selectOneMenu>
    <h:selectOneMenu id="performedbyempid" value="#{workflowProcEditBean.performedByEmpID}"
                     rendered="#{workflowProcEditBean.performedBy eq 'E'}">
        <f:selectItem itemLabel="- Choose One -" itemValue="" />
        <f:selectItems value="#{workflowProcEditBean.employees}" />
    </h:selectOneMenu>
</h:panelGroup>

If compileOptions doesn't work, try this

Disable 'Instant Run'.

Android Studio -> File -> Settings -> Build, Execution, Deployment -> Instant Run -> Disable checkbox

You could use a function similar to:

function redirect($url) {
    ob_start();
    header('Location: '.$url);
    ob_end_flush();
    die();
}

Worth noting, you should always use either ob_flush() or ob_start() at the beginning of your header('location: ...'); functions, and you should always follow them with a die() or exit() function to prevent further code execution.

Here's a more detailed guide than any of the other answers have mentioned: http://www.exchangecore.com/blog/how-redirect-using-php/

This guide includes reasons for using die() / exit() functions in your redirects, as well as when to use ob_flush() vs ob_start(), and some potential errors that the others answers have left out at this point.

You can generate a noise array, and add it to your signal

import numpy as np

noise = np.random.normal(0,1,100)

# 0 is the mean of the normal distribution you are choosing from
# 1 is the standard deviation of the normal distribution
# 100 is the number of elements you get in array noise

So you want to pass data in body of a GET request, better would be to do it in POST call. You can achieve this by using both Requests.

Raw Request

GET http://ES_search_demo.com/document/record/_search?pretty=true HTTP/1.1
Host: ES_search_demo.com
Content-Length: 183
User-Agent: python-requests/2.9.0
Connection: keep-alive
Accept: */*
Accept-Encoding: gzip, deflate

{
  "query": {
    "bool": {
      "must": [
        {
          "text": {
            "record.document": "SOME_JOURNAL"
          }
        },
        {
          "text": {
            "record.articleTitle": "farmers"
          }
        }
      ],
      "must_not": [],
      "should": []
    }
  },
  "from": 0,
  "size": 50,
  "sort": [],
  "facets": {}
}

Sample call with Requests

import requests

def consumeGETRequestSync():
data = '{
  "query": {
    "bool": {
      "must": [
        {
          "text": {
            "record.document": "SOME_JOURNAL"
          }
        },
        {
          "text": {
            "record.articleTitle": "farmers"
          }
        }
      ],
      "must_not": [],
      "should": []
    }
  },
  "from": 0,
  "size": 50,
  "sort": [],
  "facets": {}
}'
url = 'http://ES_search_demo.com/document/record/_search?pretty=true'
headers = {"Accept": "application/json"}
# call get service with headers and params
response = requests.get(url,data = data)
print "code:"+ str(response.status_code)
print "******************"
print "headers:"+ str(response.headers)
print "******************"
print "content:"+ str(response.text)

consumeGETRequestSync()

My answer is intended for comment though but since i havent got enough reputation, i think it will still be relevant as an answer and help some one.

I find datatable in library DT robust to handle rownames, and columnames

Library DT
datatable(df, rownames = FALSE)  # no row names 

refer to https://rstudio.github.io/DT/ for usage scenarios

I wrote this javascript script and included it in the header (before anything loads). It seems to work. If the page was loaded more than one hour ago or the situation is undefined it will reload everything from server. The time of one hour = 3600000 milliseconds can be changed in the following line: if(alter > 3600000)

With regards, Birke

<script type="text/javascript">
//<![CDATA[
function zeit()
{
    if(document.cookie)
    {
        a = document.cookie;
        cookiewert = "";
        while(a.length > 0)
        {
            cookiename = a.substring(0,a.indexOf('='));
            if(cookiename == "zeitstempel")
            {
                cookiewert = a.substring(a.indexOf('=')+1,a.indexOf(';'));
                break;
            }
            a = a.substring(a.indexOf(cookiewert)+cookiewert.length+1,a.length);
        }
        if(cookiewert.length > 0)
        {
            alter = new Date().getTime() - cookiewert;

            if(alter > 3600000)
            {   
                document.cookie = "zeitstempel=" + new Date().getTime() + ";";
                location.reload(true);
            }
            else
            {
                return;
            }
        }
        else
        {
            document.cookie = "zeitstempel=" + new Date().getTime() + ";";
            location.reload(true);
        }
    }
    else
    {
        document.cookie = "zeitstempel=" + new Date().getTime() + ";";
        location.reload(true);
    }
}
zeit();
//]]>
</script>

I've found another easy way to deal with this problem, you just need the attribute " connectToSortable:" to draggable like as below code:

$("#a1,#a2").draggable({
        connectToSortable: "#b,#a",
        revert: 'invalid',
    });

PS: More detail and example
How to move Draggable objects between source area and target area with jQuery

You could also simply tell your RestTemplate to accept all media types:

@Bean
public RestTemplate restTemplate() {
   final RestTemplate restTemplate = new RestTemplate();

   List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
   MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
   converter.setSupportedMediaTypes(Collections.singletonList(MediaType.ALL));
   messageConverters.add(converter);
   restTemplate.setMessageConverters(messageConverters);

   return restTemplate;
}

That depends on the nature of the information you want to return.

If it is a single integer value, you can use the return statement

 create proc myproc
 as 
 begin
     return 1
 end
 go
 declare @i int
 exec @i = myproc

If you have a non integer value, or a number of scalar values, you can use output parameters

create proc myproc
  @a int output,
  @b varchar(50) output
as
begin
  select @a = 1, @b='hello'
end
go
declare @i int, @j varchar(50)
exec myproc @i output, @j output

If you want to return a dataset, you can use insert exec

create proc myproc
as 
begin
     select name from sysobjects
end
go

declare @t table (name varchar(100))
insert @t (name)
exec myproc

You can even return a cursor but that's just horrid so I shan't give an example :)

You can turn autocommit ON by setting implicit_transactions OFF:

SET IMPLICIT_TRANSACTIONS OFF

When the setting is ON, it returns to implicit transaction mode. In implicit transaction mode, every change you make starts a transactions which you have to commit manually.

Maybe an example is clearer. This will write a change to the database:

SET IMPLICIT_TRANSACTIONS ON
UPDATE MyTable SET MyField = 1 WHERE MyId = 1
COMMIT TRANSACTION

This will not write a change to the database:

SET IMPLICIT_TRANSACTIONS ON
UPDATE MyTable SET MyField = 1 WHERE MyId = 1
ROLLBACK TRANSACTION

The following example will update a row, and then complain that there's no transaction to commit:

SET IMPLICIT_TRANSACTIONS OFF
UPDATE MyTable SET MyField = 1 WHERE MyId = 1
ROLLBACK TRANSACTION

Like Mitch Wheat said, autocommit is the default for Sql Server 2000 and up.

Nope, there is no standard for type sizes. Standard only requires that:

sizeof(short int) <= sizeof(int) <= sizeof(long int)

The best thing you can do if you want variables of a fixed sizes is to use macros like this:

#ifdef SYSTEM_X
  #define WORD int
#else
  #define WORD long int
#endif

Then you can use WORD to define your variables. It's not that I like this but it's the most portable way.

This is a modification to Dolan's code above, I've added a feature which checks the window size at the start of the resize and compares it to the size at the end of the resize, if size is either bigger or smaller than the margin (eg. 1000) then it reloads.

var rtime = new Date(1, 1, 2000, 12,00,00);
var timeout = false;
var delta = 200;
var windowsize = $window.width();
var windowsizeInitial = $window.width();

$(window).on('resize',function() {
    windowsize = $window.width();
    rtime = new Date();
    if (timeout === false) {
            timeout = true;
            setTimeout(resizeend, delta);
        }
});

function resizeend() {
if (new Date() - rtime < delta) {
    setTimeout(resizeend, delta);
    return false;
} else {
        if (windowsizeInitial > 1000 && windowsize > 1000 ) {
            setTimeout(resizeend, delta);
            return false;
        }
        if (windowsizeInitial < 1001 && windowsize < 1001 ) {
            setTimeout(resizeend, delta);
            return false;
        } else {
            timeout = false;
            location.reload();
        }
    }
    windowsizeInitial = $window.width();
    return false;
}

Among my colleagues, the meaning (or perhaps more accurately - the use) of the term "foo" has been to serve as a placeholder to represent an example for a name. Examples include, but not limited to, yourVariableName, yourObjectName, or yourColumnName.

Today, I avoid using "foo" and prefer using this type of named substitution for a couple of reasons.

• In my earlier days, I originally found the use of "foo" as a placement in any example to represent something as f'd-up to be confusing. I wanted a working example, not something that was foobar.
• Your results may vary, but I always, 100%, everytime, never-failed, got more follow-up questions about the meaning of the actual variable where "foo" was used.

You have it back-to-front. Your button click results in a call to runOnUiThread(), but this isn't needed, since the click handler is already running on the UI thread. Then, your code in runOnUiThread() is launching a new background thread, where you try to do UI operations, which then fail.

Instead, just launch the background thread directly from your click handler. Then, wrap the calls to btn.setText() inside a call to runOnUiThread().

If you want to do it in CSS:

#ID { cursor: none !important; }

Arrays.asList(array)

Arrays uses new ArrayList(array). But this is not the java.util.ArrayList. It's very similar though. Note that this constructor takes the array and places it as the backing array of the list. So it is O(1).

In case you already have the list created, Collections.addAll(list, array), but that's less efficient.

Update: Thus your Collections.addAll(list, array) becomes a good option. A wrapper of it is guava's Lists.newArrayList(array).

Step1:

sudo gedit ~/.bash_profile

Step2:

JAVA_HOME=/home/user/tool/jdk-8u201-linux-x64/jdk1.8.0_201
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
export JAVA_HOME
export JRE_HOME
export PATH

Step3:

source ~/.bash_profile

I've created go project for string formatting from template (it allow to format strings in C# or Python style, just first version for very simple cases), you could find it here https://github.com/Wissance/stringFormatter

it works in following manner:

func TestStrFormat(t *testing.T) {
    strFormatResult, err := Format("Hello i am {0}, my age is {1} and i am waiting for {2}, because i am {0}!",
                              "Michael Ushakov (Evillord666)", "34", "\"Great Success\"")
    assert.Nil(t, err)
    assert.Equal(t, "Hello i am Michael Ushakov (Evillord666), my age is 34 and i am waiting for \"Great Success\", because i am Michael Ushakov (Evillord666)!", strFormatResult)

    strFormatResult, err = Format("We are wondering if these values would be replaced : {5}, {4}, {0}", "one", "two", "three")
    assert.Nil(t, err)
    assert.Equal(t, "We are wondering if these values would be replaced : {5}, {4}, one", strFormatResult)

    strFormatResult, err = Format("No args ... : {0}, {1}, {2}")
    assert.Nil(t, err)
    assert.Equal(t, "No args ... : {0}, {1}, {2}", strFormatResult)
}

func TestStrFormatComplex(t *testing.T) {
    strFormatResult, err := FormatComplex("Hello {user} what are you doing here {app} ?", map[string]string{"user":"vpupkin", "app":"mn_console"})
    assert.Nil(t, err)
    assert.Equal(t, "Hello vpupkin what are you doing here mn_console ?", strFormatResult)
}

Try this instead:

var myArray = [];

myArray.push({ id: 0, value: 1 });
myArray.push({ id: 2, value: 3 });

or will this not work for your situation?

If by configure release/build, you mean you only need one config per makefile, then it is simply a matter and decoupling CC and CFLAGS:

CFLAGS=-DDEBUG
#CFLAGS=-O2 -DNDEBUG
CC=g++ -g3 -gdwarf2 $(CFLAGS)

Depending on whether you can use gnu makefile, you can use conditional to make this a bit fancier, and control it from the command line:

DEBUG ?= 1
ifeq ($(DEBUG), 1)
    CFLAGS =-DDEBUG
else
    CFLAGS=-DNDEBUG
endif

.o: .c
    $(CC) -c $< -o $@ $(CFLAGS)

and then use:

make DEBUG=0
make DEBUG=1

If you need to control both configurations at the same time, I think it is better to have build directories, and one build directory / config.

For that you need to install binary of GNU GCC compiler, which comes with MinGW package. You can download MinGW( and put it under C:/ ) and later you have to download gnu -c, c++ related Binaries, so select required package and install them(in the MinGW ). Then in the Code::Blocks, go to Setting, Compiler, ToolChain Executable. In that you will find Path, there set C:/MinGW. Then mentioned error will be vanished.

Try this for Java programmatically:

myEditText(new InputFilter[] {new InputFilter.LengthFilter(CUSTOM_MAX_LEN)});

This happens quite very often to me.

Last time that happened I can remembered was caused by switching the Eclipse ADT (Google special edition) to Android Studio, and switching back. I basically tried all methods that I can found on stackoverflow which didn't work for me.

Eventually, I got the app working again (no more NoCalssDeffoundError) by switching my IDE to original Eclipse (Kepler) with ADT.

It happened with me when I was using Databinding for Activity and Fragments.

For fragment - in onCreateView we can inflate the layout in traditional way using inflater. and in onViewCreated method, binding object can be updated as

 binding = DataBindingUtil.getBinding<FragmentReceiverBinding>(view) as FragmentReceiverBinding

It solved my issue