Since the beginning, Swift has provided some facilities for making ObjC and C more Swifty, adding more with each version. Now, in Swift 3, the new "import as member" feature lets frameworks with certain styles of C API -- where you have a data type that works sort of like a class, and a bunch of global functions to work with it -- act more like Swift-native APIs. The data types import as Swift classes, their related global functions import as methods and properties on those classes, and some related things like sets of constants can become subtypes where appropriate.

In Xcode 8 / Swift 3 beta, Apple has applied this feature (along with a few others) to make the Dispatch framework much more Swifty. (And Core Graphics, too.) If you've been following the Swift open-source efforts, this isn't news, but now is the first time it's part of Xcode.

Your first step on moving any project to Swift 3 should be to open it in Xcode 8 and choose Edit > Convert > To Current Swift Syntax... in the menu. This will apply (with your review and approval) all of the changes at once needed for all the renamed APIs and other changes. (Often, a line of code is affected by more than one of these changes at once, so responding to error fix-its individually might not handle everything right.)

The result is that the common pattern for bouncing work to the background and back now looks like this:

// Move to a background thread to do some long running work
DispatchQueue.global(qos: .userInitiated).async {
    let image = self.loadOrGenerateAnImage()
    // Bounce back to the main thread to update the UI
    DispatchQueue.main.async {
        self.imageView.image = image
    }
}

Note we're using .userInitiated instead of one of the old DISPATCH_QUEUE_PRIORITY constants. Quality of Service (QoS) specifiers were introduced in OS X 10.10 / iOS 8.0, providing a clearer way for the system to prioritize work and deprecating the old priority specifiers. See Apple's docs on background work and energy efficiency for details.

By the way, if you're keeping your own queues to organize work, the way to get one now looks like this (notice that DispatchQueueAttributes is an OptionSet, so you use collection-style literals to combine options):

class Foo { 
    let queue = DispatchQueue(label: "com.example.my-serial-queue",
                           attributes: [.serial, .qosUtility])
    func doStuff() {
        queue.async {
            print("Hello World")
        }
    }
}

Using dispatch_after to do work later? That's a method on queues, too, and it takes a DispatchTime, which has operators for various numeric types so you can just add whole or fractional seconds:

DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { // in half a second...
    print("Are we there yet?")
}

You can find your way around the new Dispatch API by opening its interface in Xcode 8 -- use Open Quickly to find the Dispatch module, or put a symbol (like DispatchQueue) in your Swift project/playground and command-click it, then brouse around the module from there. (You can find the Swift Dispatch API in Apple's spiffy new API Reference website and in-Xcode doc viewer, but it looks like the doc content from the C version hasn't moved into it just yet.)

See the Migration Guide for more tips.

Swift 3

you want call some closure in swift code then you want to change in storyboard ya any type off change belong to view your application will crash

but you want to use dispatch method your application will not crash

async method

DispatchQueue.main.async 
{
 //Write code here                                   

}

sync method

DispatchQueue.main.sync 
{
     //Write code here                                  

}

From your stack trace, EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0) occurred because dispatch_group_t was released while it was still locking (waiting for dispatch_group_leave).

According to what you found, this was what happened :

• dispatch_group_t group was created. group's retain count = 1.
• -[self webservice:onCompletion:] captured the group. group's retain count = 2.
• dispatch_async(...., ^{ dispatch_group_wait(group, ...) ... }); captured the group again. group's retain count = 3.
• Exit the current scope. group was released. group's retain count = 2.
• dispatch_group_leave was never called.
• dispatch_group_wait was timeout. The dispatch_async block was completed. group was released. group's retain count = 1.
• You called this method again. When -[self webservice:onCompletion:] was called again, the old onCompletion block was replaced with the new one. So, the old group was released. group's retain count = 0. group was deallocated. That resulted to EXC_BAD_INSTRUCTION.

To fix this, I suggest you should find out why -[self webservice:onCompletion:] didn't call onCompletion block, and fix it. Then make sure the next call to the method will happen after the previous call did finish.

In case you allow the method to be called many times whether the previous calls did finish or not, you might find someone to hold group for you :

• You can change the timeout from 2 seconds to DISPATCH_TIME_FOREVER or a reasonable amount of time that all -[self webservice:onCompletion] should call their onCompletion blocks by the time. So that the block in dispatch_async(...) will hold it for you.
  OR
• You can add group into a collection, such as NSMutableArray.

I think it is the best approach to create a dedicate class for this action. When you want to make calls to webservice, you then create an object of the class, call the method on it with the completion block passing to it that will release the object. In the class, there is an ivar of dispatch_group_t or dispatch_semaphore_t.

Async means asynchronous and you should use that most of the time. You should never call sync on main thread cause it will lock up your UI until the task is completed. You Here is a better way to do this in Swift:

runThisInMainThread { () -> Void in
    // Run your code like this:
    self.doStuff()
}

func runThisInMainThread(block: dispatch_block_t) {
    dispatch_async(dispatch_get_main_queue(), block)
}

Its included as a standard function in my repo, check it out: https://github.com/goktugyil/EZSwiftExtensions

In Swift 3, there is no need for completion handler when DispatchQueue finishes one task. Furthermore you can achieve your goal in different ways

One way is this:

    var a: Int?

    let queue = DispatchQueue(label: "com.app.queue")
    queue.sync {

        for  i in 0..<10 {

            print("??" , i)
            a = i
        }
    }

    print("After Queue \(a)")

It will wait until the loop finishes but in this case your main thread will block.

You can also do the same thing like this:

    let myGroup = DispatchGroup()
    myGroup.enter()
    //// Do your task

    myGroup.leave() //// When your task completes
     myGroup.notify(queue: DispatchQueue.main) {

        ////// do your remaining work
    }

One last thing: If you want to use completionHandler when your task completes using DispatchQueue, you can use DispatchWorkItem.

Here is an example how to use DispatchWorkItem:

let workItem = DispatchWorkItem {
    // Do something
}

let queue = DispatchQueue.global()
queue.async {
    workItem.perform()
}
workItem.notify(queue: DispatchQueue.main) {
    // Here you can notify you Main thread
}

Xcode 10.2 and Swift 5 and above

DispatchQueue.main.asyncAfter(deadline: .now() + 2, execute: {
   // code to execute                 
})

In Swift 4

Use this snippet:

    let delayInSec = 1.0
    DispatchQueue.main.asyncAfter(deadline: .now() + delayInSec) {
       // code here
       print("It works")
    }

Modern versions of Swift use DispatchQueue.main.async to dispatch to the main thread:

DispatchQueue.main.async { 
  // your code here
}

To dispatch after on the main queue, use:

DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
  // your code here
}

Older versions of Swift used:

dispatch_async(dispatch_get_main_queue(), {
  let delegateObj = UIApplication.sharedApplication().delegate as YourAppDelegateClass
  delegateObj.addUIImage("yourstring")
})

- (void)performAndWait:(void (^)(dispatch_semaphore_t semaphore))perform;
{
  NSParameterAssert(perform);
  dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
  perform(semaphore);
  dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
  dispatch_release(semaphore);
}

Example usage:

[self performAndWait:^(dispatch_semaphore_t semaphore) {
  [self someLongOperationWithSuccess:^{
    dispatch_semaphore_signal(semaphore);
  }];
}];

No it doesn't wait and the way you are doing it in that sample is not good practice.

dispatch_async is always asynchronous. It's just that you are enqueueing all the UI blocks to the same queue so the different blocks will run in sequence but parallel with your data processing code.

If you want the update to wait you can use dispatch_sync instead.

// This will wait to finish
dispatch_sync(dispatch_get_main_queue(), ^{
    // Update the UI on the main thread.
});

Another approach would be to nest enqueueing the block. I wouldn't recommend it for multiple levels though.

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    // Background work

    dispatch_async(dispatch_get_main_queue(), ^{
        // Update UI

        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            // Background work

            dispatch_async(dispatch_get_main_queue(), ^{
                // Update UI
            });
        });
    });
});

If you need the UI updated to wait then you should use the synchronous versions. It's quite okay to have a background thread wait for the main thread. UI updates should be very quick.

Swift 4:

DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(100)) {
   // Code
}

For the time .seconds(Int), .microseconds(Int) and .nanoseconds(Int) may also be used.

Swift 4.2 example:

let group = DispatchGroup.group(count: 2)
group.notify(queue: DispatchQueue.main) {
     self.renderingLine = false
     // all groups are done
}
DispatchQueue.main.async {
    self.renderTargetNode(floorPosition: targetPosition, animated: closedContour) {
        group.leave()
        // first done
    }
    self.renderCenterLine(position: targetPosition, animated: closedContour) {
        group.leave()
        // second done
    }
 }

For the asynchronous dispatch case you describe above, you shouldn't need to check if you're on the main thread. As Bavarious indicates, this will simply be queued up to be run on the main thread.

However, if you attempt to do the above using a dispatch_sync() and your callback is on the main thread, your application will deadlock at that point. I describe this in my answer here, because this behavior surprised me when moving some code from -performSelectorOnMainThread:. As I mention there, I created a helper function:

void runOnMainQueueWithoutDeadlocking(void (^block)(void))
{
    if ([NSThread isMainThread])
    {
        block();
    }
    else
    {
        dispatch_sync(dispatch_get_main_queue(), block);
    }
}

which will run a block synchronously on the main thread if the method you're in isn't currently on the main thread, and just executes the block inline if it is. You can employ syntax like the following to use this:

runOnMainQueueWithoutDeadlocking(^{
    //Do stuff
});

GCD is very easy to use - if you want to do something in the background, all you need to do is write the code and dispatch it on a background queue. Doing the same thing with NSOperation is a lot of additional work.

The advantage of NSOperation is that (a) you have a real object that you can send messages to, and (b) that you can cancel an NSOperation. That's not trivial. You need to subclass NSOperation, you have to write your code correctly so that cancellation and correctly finishing a task both work correctly. So for simple things you use GCD, and for more complicated things you create a subclass of NSOperation. (There are subclasses NSInvocationOperation and NSBlockOperation, but everything they do is easier done with GCD, so there is no good reason to use them).

I'm appending this answer because I don't see why anyone who has just tried to commit work would want to delete all that work because of some mistake using Git!

If you want to keep your work and just 'undo' that commit command (you caught before pushing to repo):

git reset --soft HEAD~1

Do not use the --hard flag unless you want to destroy your work in progress since the last commit.

UPDATE tablename SET fieldname = CONCAT("test", fieldname) [WHERE ...]

I use a variation of one of the answers here. I want to replace spaces with "-" so its SEO friendly and also make lower case. Also not reference system.web from my services layer.

private string MakeUrlString(string input)
{
    var array = input.ToCharArray();

    array = Array.FindAll<char>(array, c => char.IsLetterOrDigit(c) || char.IsWhiteSpace(c) || c == '-');

    var newString = new string(array).Replace(" ", "-").ToLower();
    return newString;
}

An easy and safe method:

editText.clearFocus();
editText.setFocusable(false);

Another way, if you want to create a new commit instead of performing a merge:

git checkout cleanchanges
git reset --hard master
git reset cleanchanges

git status
git add .
git commit

The first (hard) reset will set your working tree to the same as the last commit in master.

The second reset will put your HEAD back where it was, pointing to the tip of the cleanchanges branch, but without changing any files. So now you can add and commit them.

Afterwards, if you want to remove the dirty commits you made from master (and assuming you have not already pushed them), you could:

git checkout master
git reset --hard origin/master

This will discard all your new commits, returning your local master branch to the same commit as the one in the repository.

You can try configure SQL server:

1. Step 1: Open SQL server 20xx Configuration Manager
2. Step 2: Click Protocols for SQL.. in SQL server configuration. Then, right click TCP/IP, choose Properties
3. Step 3: Click tab IP Address, Edit All TCP. Port is 1433

NOTE: ALL TCP port is 1433 Finally, restart the server.

Here's why: As it is says in the Javadoc:

The iterators returned by this class's iterator and listIterator methods are fail-fast: if the list is structurally modified at any time after the iterator is created, in any way except through the iterator's own remove or add methods, the iterator will throw a ConcurrentModificationException.

This check is done in the next() method of the iterator (as you can see by the stacktrace). But we will reach the next() method only if hasNext() delivered true, which is what is called by the for each to check if the boundary is met. In your remove method, when hasNext() checks if it needs to return another element, it will see that it returned two elements, and now after one element was removed the list only contains two elements. So all is peachy and we are done with iterating. The check for concurrent modifications does not occur, as this is done in the next() method which is never called.

Next we get to the second loop. After we remove the second number the hasNext method will check again if can return more values. It has returned two values already, but the list now only contains one. But the code here is:

public boolean hasNext() {
        return cursor != size();
}

1 != 2, so we continue to the next() method, which now realizes that someone has been messing with the list and fires the exception.

Hope that clears your question up.

Summary

List.remove() will not throw ConcurrentModificationException when it removes the second last element from the list.

In VBA we can not use if jj = 5 or 6 then we must use if jj = 5 or jj = 6 then

maybe this:

If inputWks.Range("d9") > 0 And (inputWks.Range("d11") = "Restricted_Expenditure" Or inputWks.Range("d11") = "Unrestricted_Expenditure") Then

I quote VonC response, adding something.

• Ctrl+PgUp(PgDn) to switch between tabs in the current stack (both editors and view)
• Ctrl+E to switch between tabs in the current stack, using a filtered list
• Ctrl+F6 to switch between editors, no matter which stack
• Ctrl+F7 to switch between views, no matter which stack

Plus, there is Bug 206299 open to request using Ctrl+Tab for switching tabs instead of Ctrl+PgUp(PgDn).

• As this would break accessibility, the user should set a preference for this. Perhaps there should be a question in the Welcome Questionnaire during to the Oomph installs.

If not satisfied, you can assign yourself the Key Binding, from Window > Preferences > General > Keys.

function btnClick() {
    return validData();
}

Make sure that the remote origin you are listing is really the repository that you want and not an older clone.

Simplest way:

var uriSource = new Uri("image path here");
image1.Source = new BitmapImage(uriSource);

Had several modules complain about patch does not apply. One thing I was missing out was that the branches had become stale. After the git merge master generated the patch files using git diff master BRANCH > file.patch. Going to the vanilla branch was able to apply the patch with git apply file.patch

Use Viewbag is wrong for sending list to view.You should using Viewmodel in this case. like this:

Send Country list and City list and Other list you need to show in View:

HomeController Code:

[HttpGet]
        public ActionResult NewAgahi() // New Advertising
        {
            //--------------------------------------------------------
            // ??????? ?? ?????? ???? ????? ??? ??? ?? ???
            Country_Repository blCountry = new Country_Repository();
            Ostan_Repository blOstan = new Ostan_Repository();
            City_Repository blCity = new City_Repository();
            Mahale_Repository blMahale = new Mahale_Repository();
            Agahi_Repository blAgahi = new Agahi_Repository();

            var vm = new NewAgahi_ViewModel();
            vm.Country = blCountry.Select();
            vm.Ostan = blOstan.Select();
            vm.City = blCity.Select();
            vm.Mahale = blMahale.Select();
            //vm.Agahi = blAgahi.Select();

            return View(vm);
        }

        [ValidateAntiForgeryToken]
        [HttpPost]
        public ActionResult NewAgahi(Agahi agahi)
        {

            if (ModelState.IsValid == true)
            {
                Agahi_Repository blAgahi = new Agahi_Repository();

                agahi.Date = DateTime.Now.Date;
                agahi.UserId = 1048;
                agahi.GroupId = 1;


                if (blAgahi.Add(agahi) == true)
                {
                    //Success
                    return JavaScript("alert('??? ??')");

                }
                else
                {
                    //Fail
                    return JavaScript("alert('????? ?? ???')");

            }

Viewmodel Code:

using ProjectName.Models.DomainModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace ProjectName.ViewModels
{
    public class NewAgahi_ViewModel // ???? ??????? ???? ?? ??? ??? ?? ?? ???
    { 

        public IEnumerable<Country> Country { get; set; }

        public IEnumerable<Ostan> Ostan { get; set; }

        public IEnumerable<City> City { get; set; }

        public IQueryable<Mahale> Mahale { get; set; }

        public ProjectName.Models.DomainModels.Agahi Agahi { get; set; }

    }
}

View Code:

@model ProjectName.ViewModels.NewAgahi_ViewModel

..... .....

@Html.DropDownList("CountryList", new SelectList(Model.Country, "id", "Name"))

 @Html.DropDownList("CityList", new SelectList(Model.City, "id", "Name"))

Country_Repository Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using ProjectName.Models.DomainModels;

namespace ProjectName.Models.Repositories
{
    public class Country_Repository : IDisposable
    {
        private MyWebSiteDBEntities db = null;


        public Country_Repository()
        {
            db = new DomainModels.MyWebSiteDBEntities();
        }

        public Boolean Add(Country entity, bool autoSave = true)
        {
            try
            {
                db.Country.Add(entity);
                if (autoSave)
                    return Convert.ToBoolean(db.SaveChanges()); 
                                                                //return "True";
                else
                    return false;
            }
            catch (Exception e)
            {
                string ss = e.Message;
                //return e.Message;
                return false;
            }
        }


        public bool Update(Country entity, bool autoSave = true)
        {
            try
            {
                db.Country.Attach(entity);
                db.Entry(entity).State = System.Data.Entity.EntityState.Modified;
                if (autoSave)
                    return Convert.ToBoolean(db.SaveChanges());
                else
                    return false;
            }
            catch (Exception e)
            {
                string ss = e.Message; // ?? ?????????? ??? ???? ?????? ?????? ??? ?? ?????

                return false;
            }
        }

        public bool Delete(Country entity, bool autoSave = true)
        {
            try
            {
                db.Entry(entity).State = System.Data.Entity.EntityState.Deleted;
                if (autoSave)
                    return Convert.ToBoolean(db.SaveChanges());
                else
                    return false;
            }
            catch
            {
                return false;
            }
        }

        public bool Delete(int id, bool autoSave = true)
        {
            try
            {
                var entity = db.Country.Find(id);
                db.Entry(entity).State = System.Data.Entity.EntityState.Deleted;
                if (autoSave)
                    return Convert.ToBoolean(db.SaveChanges());
                else
                    return false;
            }
            catch
            {
                return false;
            }
        }

        public Country Find(int id)
        {
            try
            {
                return db.Country.Find(id);
            }
            catch
            {
                return null;
            }
        }


        public IQueryable<Country> Where(System.Linq.Expressions.Expression<Func<Country, bool>> predicate)
        {
            try
            {
                return db.Country.Where(predicate);
            }
            catch
            {
                return null;
            }
        }

        public IQueryable<Country> Select()
        {
            try
            {
                return db.Country.AsQueryable();
            }
            catch
            {
                return null;
            }
        }

        public IQueryable<TResult> Select<TResult>(System.Linq.Expressions.Expression<Func<Country, TResult>> selector)
        {
            try
            {
                return db.Country.Select(selector);
            }
            catch
            {
                return null;
            }
        }

        public int GetLastIdentity()
        {
            try
            {
                if (db.Country.Any())
                    return db.Country.OrderByDescending(p => p.id).First().id;
                else
                    return 0;
            }
            catch
            {
                return -1;
            }
        }

        public int Save()
        {
            try
            {
                return db.SaveChanges();
            }
            catch
            {
                return -1;
            }
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (this.db != null)
                {
                    this.db.Dispose();
                    this.db = null;
                }
            }
        }

        ~Country_Repository()
        {
            Dispose(false);
        }
    }
}

Just a quick contribution.

Since the current python docs don't have "window" in the itertool examples (i.e., at the bottom of http://docs.python.org/library/itertools.html), here's an snippet based on the code for grouper which is one of the examples given:

import itertools as it
def window(iterable, size):
    shiftedStarts = [it.islice(iterable, s, None) for s in xrange(size)]
    return it.izip(*shiftedStarts)

Basically, we create a series of sliced iterators, each with a starting point one spot further forward. Then, we zip these together. Note, this function returns a generator (it is not directly a generator itself).

Much like the appending-element and advancing-iterator versions above, the performance (i.e., which is best) varies with list size and window size. I like this one because it is a two-liner (it could be a one-liner, but I prefer naming concepts).

It turns out that the above code is wrong. It works if the parameter passed to iterable is a sequence but not if it is an iterator. If it is an iterator, the same iterator is shared (but not tee'd) among the islice calls and this breaks things badly.

Here is some fixed code:

import itertools as it
def window(iterable, size):
    itrs = it.tee(iterable, size)
    shiftedStarts = [it.islice(anItr, s, None) for s, anItr in enumerate(itrs)]
    return it.izip(*shiftedStarts)

Also, one more version for the books. Instead of copying an iterator and then advancing copies many times, this version makes pairwise copies of each iterator as we move the starting position forward. Thus, iterator t provides both the "complete" iterator with starting point at t and also the basis for creating iterator t + 1:

import itertools as it
def window4(iterable, size):
    complete_itr, incomplete_itr = it.tee(iterable, 2)
    iters = [complete_itr]
    for i in xrange(1, size):
        incomplete_itr.next()
        complete_itr, incomplete_itr = it.tee(incomplete_itr, 2)
        iters.append(complete_itr)
    return it.izip(*iters)

put your php into a hidden div and than call it with javascript

php part

<div id="mybox" style="visibility:hidden;"> some php here </div>

javascript part

var myfield = document.getElementById("mybox");
myfield.visibility = 'visible';

now, you can do anything with myfield...

As of go1.2+, cgo automatically incorporates and compiles C++ code:

http://golang.org/doc/go1.2#cgo_and_cpp

This is super old, but I figured I'd add my 2c. DATE_FORMAT does indeed return a string, but I was looking for the CAST function, in the situation that I already had a datetime string in the database and needed to pattern match against it:

http://dev.mysql.com/doc/refman/5.0/en/cast-functions.html

In this case, you'd use:

CAST(date_value AS char)

This answers a slightly different question, but the question title seems ambiguous enough that this might help someone searching.

diff -r will do this, telling you both if any files have been added or deleted, and what's changed in the files that have been modified.

Place your layout in a ScrollView.

Here is the batch file which should work for you:

@echo off
Title HOST: Installing updates on %computername%
echo %computername%
set Server=\\SERVERNAME or PATH\msifolder

:select
cls
echo Select one of the following MSI install folders for installation task.
echo.
dir "%Server%" /AD /ON /B
echo.
set /P "MSI=Please enter the MSI folder to install: "
set "Package=%Server%\%MSI%\%MSI%.msi"

if not exist "%Package%" (
   echo.
   echo The entered folder/MSI file does not exist ^(typing mistake^).
   echo.
   setlocal EnableDelayedExpansion
   set /P "Retry=Try again [Y/N]: "
   if /I "!Retry!"=="Y" endlocal & goto select
   endlocal
   goto :EOF
)

echo.
echo Selected installation: %MSI%
echo.
echo.

:verify
echo Is This Correct?
echo.
echo.
echo    0: ABORT INSTALL
echo    1: YES
echo    2: NO, RE-SELECT
echo.
set /p "choice=Select YES, NO or ABORT? [0,1,2]: "
if [%choice%]==[0] goto :EOF
if [%choice%]==[1] goto yes
goto select

:yes
echo.
echo Running %MSI% installation ...
start "Install MSI" /wait "%SystemRoot%\system32\msiexec.exe" /i /quiet "%Package%"

The characters listed on last page output on entering in a command prompt window either help cmd or cmd /? have special meanings in batch files. Here are used parentheses and square brackets also in strings where those characters should be interpreted literally. Therefore it is necessary to either enclose the string in double quotes or escape those characters with character ^ as it can be seen in code above, otherwise command line interpreter exits batch execution because of a syntax error.

And it is not possible to call a file with extension MSI. A *.msi file is not an executable. On double clicking on a MSI file, Windows looks in registry which application is associated with this file extension for opening action. And the application to use is msiexec with the command line option /i to install the application inside MSI package.

Run msiexec.exe /? to get in a GUI window the available options or look at Msiexec (command-line options).

I have added already /quiet additionally to required option /i for a silent installation.

In batch code above command start is used with option /wait to start Windows application msiexec.exe and hold execution of batch file until installation finished (or aborted).

I found that JimTheDev's answer only worked when the state definition had cache:false set. With the view cached, you can do $ionicHistory.clearCache() and then $state.go('app.fooDestinationView') if you're navigating from one state to the one that is cached but needs refreshing.

See my answer here as it requires a simple change to Ionic and I created a pull request: https://stackoverflow.com/a/30224972/756177

Using pure Java:

public static boolean isToday(Date date){
        Calendar today = Calendar.getInstance();
        Calendar specifiedDate  = Calendar.getInstance();
        specifiedDate.setTime(date);

        return today.get(Calendar.DAY_OF_MONTH) == specifiedDate.get(Calendar.DAY_OF_MONTH)
                &&  today.get(Calendar.MONTH) == specifiedDate.get(Calendar.MONTH)
                &&  today.get(Calendar.YEAR) == specifiedDate.get(Calendar.YEAR);
    }

Best could be ng new myApp --style=scss

Then Angular CLI will create any new component with scss for you...

Note that using scss not working in the browser as you probably know.. so we need something to compile it to css, for this reason we can use node-sass, install it like below:

npm install node-sass --save-dev

and you should be good to go!

If you using webpack, read on here:

Command line inside project folder where your existing package.json is: npm install node-sass sass-loader raw-loader --save-dev

In webpack.common.js, search for "rules:" and add this object to the end of the rules array (don't forget to add a comma to the end of the previous object):

{
  test: /\.scss$/,
  exclude: /node_modules/,
  loaders: ['raw-loader', 'sass-loader'] // sass-loader not scss-loader
}

Then in your component:

@Component({
  styleUrls: ['./filename.scss'],
})

If you want global CSS support then on the top level component (likely app.component.ts) remove encapsulation and include the SCSS:

import {ViewEncapsulation} from '@angular/core';

@Component({
  selector: 'app',
  styleUrls: ['./bootstrap.scss'],
  encapsulation: ViewEncapsulation.None,
  template: ``
})
class App {}

from Angular starter here.

i usually couple of methods (in pair) for verification whether element is present or not:

public boolean isElementPresent(By locatorKey) {
    try {
        driver.findElement(locatorKey);
        return true;
    } catch (org.openqa.selenium.NoSuchElementException e) {
        return false;
    }
}

public boolean isElementVisible(String cssLocator){
    return driver.findElement(By.cssSelector(cssLocator)).isDisplayed();
}

Note that sometimes selenium can find elements in DOM but they can be invisible, consequently selenium will not be able to interact with them. So in this case method checking for visibility helps.

If you want to wait for the element until it appears the best solution i found is to use fluent wait:

public WebElement fluentWait(final By locator){
    Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
            .withTimeout(30, TimeUnit.SECONDS)
            .pollingEvery(5, TimeUnit.SECONDS)
            .ignoring(NoSuchElementException.class);

    WebElement foo = wait.until(new Function<WebDriver, WebElement>() {
        public WebElement apply(WebDriver driver) {
            return driver.findElement(locator);
        }
    });

    return foo;
};

Hope this helps)

num1 = num2 = 5

The following works on 2008R2+ to produce 'HH:MM':

select
case
when len(replace(replace(replace(right(cast(getdate() as varchar),7),'AM',''),'PM',''),' ','')) = 4
then '0'+ replace(replace(replace(right(cast(getdate() as varchar),7),'AM',''),'PM',''),' ','')
else replace(replace(replace(right(cast(getdate() as varchar),7),'AM',''),'PM',''),' ','') end as [Time]

It isn't defined to do so. In order to achieve this functionality, you need to create a map that maps keys to lists of values:

Map<Foo, List<Bar>> myMap;

Or, you could use the Multimap from google collections / guava libraries

You can use too

style="overflow-y: scroll; height:150px; width: auto;"

It's works for me

=VLOOKUP(lookup_value,table_array,col_index_num,range_lookup) will solve this issue.

This will search for a value in the first column to the left and return the value in the same row from a specific column.

Run "svn help commit" to all available options. You will see that there is one option responsible for accepting server certificates:

--trust-server-cert : accept unknown SSL server certificates without prompting (but only with --non-interactive)

Add it to your svn command arguments and you will not need to run svn manually to accept it permanently.

I'm not aware of OpenCV but looking at the problem logically I think you could differentiate between bottle and can by changing the image which you are looking for i.e. Coca Cola. You should incorporate till top portion of can as in case of can there is silver lining at top of coca cola and in case of bottle there will be no such silver lining.

But obviously this algorithm will fail in cases where top of can is hidden, but in such case even human will not be able to differentiate between the two (if only coca cola portion of bottle/can is visible)

Get-ADGroupMember "Group1" -recursive | Select-Object Name | Export-Csv c:\path\Groups.csv

I got this to work for me... I would assume that you could put "Group1, Group2, etc." or try a wildcard. I did pre-load AD into PowerShell before hand:

Get-Module -ListAvailable | Import-Module

If all you want to do is display an iframe on a page, the simplest solution I was able to come up with doesn't require divs or flex stuff is:

html {
    width: 100%;
    height: 100%;
    display: table;
}

body {
    text-align: center;
    vertical-align: middle;
    display: table-cell;
}

And then the HTML is just:

<html>
  <body>
     <iframe ...></iframe>
  </body>
</html>

If this is all you need you don't need wrapper divs to do it. This works for text content and stuff, too.

Fiddle.

Also this looks even simpler.

You can use a TextView or your custom TextView. The latter is when the textview cannot get focus all the time.

First, you can use a TextView or a custom TextView as the scrolling text view in your layout .xml file like this:

<com.example.myapplication.CustomTextView
            android:id="@+id/tvScrollingMessage"
            android:text="@string/scrolling_message_main_wish_list"
            android:singleLine="true"
            android:ellipsize="marquee"
            android:marqueeRepeatLimit ="marquee_forever"
            android:focusable="true"
            android:focusableInTouchMode="true"
            android:scrollHorizontally="true"
            android:layout_width="match_parent"
            android:layout_height="40dp"
            android:background="@color/black"
            android:gravity="center"
            android:textColor="@color/white"
            android:textSize="15dp"
            android:freezesText="true"/>

NOTE: in the above code snippet com.example.myapplication is an example package name and should be replaced by your own package name.

Then in case of using CustomTextView, you should define the CustomTextView class:

public class CustomTextView extends TextView {
        public CustomTextView(Context context) {
            super(context);
        }
        public CustomTextView(Context context, AttributeSet attrs) {
            super(context, attrs);

        }

        public CustomTextView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);

        }


        @Override
        protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
            if(focused)
                super.onFocusChanged(focused, direction, previouslyFocusedRect);
        }

        @Override
        public void onWindowFocusChanged(boolean focused) {
            if(focused)
                super.onWindowFocusChanged(focused);
        }


        @Override
        public boolean isFocused() {
            return true;
        }
    }

Hope it will be helpful to you. Cheers!

The column widths set to fit its content I have used the bellow statement, It resolved my issue.

First Step :

RadGridViewName.AutoSize = true;

Second Step :

// This mode  fit in the header text and column data for all visible rows. 
this.grdSpec.MasterTemplate.BestFitColumns();

Third Step :

for (int i = 0; i < grdSpec.Columns.Count; i++) 
{
    // The column width adjusts to fit the contents all cells in the control.
    grdSpec.Columns[i].AutoSizeMode = BestFitColumnMode.AllCells; 
}

http://docs.python.org/library/configparser.html

Python's standard library might be helpful in this case.

The value for an annotation must be a compile time constant, so there is no simple way of doing what you are trying to do.

See also here: How to supply value to an annotation from a Constant java

It is possible to use some compile time tools (ant, maven?) to config it if the value is known before you try to run the program.

Personally i prefer to do ajax in wordpress the same way that i would do ajax on any other site. I create a processor php file that handles all my ajax requests and just use that URL. So this is, because of htaccess not exactly possible in wordpress so i do the following.

1.in my htaccess file that lives in my wp-content folder i add this below what's already there

<FilesMatch "forms?\.php$">
Order Allow,Deny
Allow from all
</FilesMatch>

In this case my processor file is called forms.php - you would put this in your wp-content/themes/themeName folder along with all your other files such as header.php footer.php etc... it just lives in your theme root.

2.) In my ajax code i can then use my url like this

$.ajax({
    url:'/wp-content/themes/themeName/forms.php',
    data:({
        someVar: someValue
    }),
    type: 'POST'
});

obviously you can add in any of your before, success or error type things you'd like ...but yea this is (i believe) the easier way to do it because you avoid all the silliness of telling wordpress in 8 different places what's going to happen and this also let's you avoid doing other things you see people doing where they put js code on the page level so they can dip into php where i prefer to keep my js files separate.

You can use Series.isin:

df = df[~df.datecolumn.isin(a)]

While the error message suggests that all() or any() can be used, they are useful only when you want to reduce the result into a single Boolean value. That is however not what you are trying to do now, which is to test the membership of every values in the Series against the external list, and keep the results intact (i.e., a Boolean Series which will then be used to slice the original DataFrame).

You can read more about this in the Gotchas.

Adapting the PATH should work. Just tried on my Git bash:

$ python --version
sh.exe": python: command not found

$ PATH=$PATH:/c/Python27/

$ python --version
Python 2.7.6

In particular, only provide the directory; don't specify the .exe on the PATH ; and use slashes.

It would help to have sample information about your output. Recursively using rbind on bigger and bigger things is not recommended. My first guess at something that would help you:

z <- list(1:3,4:6,7:9)
do.call(rbind,z)

See a related question for more efficiency, if needed.

It's an infamous problem: .equals() for arrays is badly broken, just don't use it, ever.

That said, it's not "broken" as in "someone has done it in a really wrong way" — it's just doing what's defined and not what's usually expected. So for purists: it's perfectly fine, and that also means, don't use it, ever.

Now the expected behaviour for equals is to compare data. The default behaviour is to compare the identity, as Object does not have any data (for purists: yes it has, but it's not the point); assumption is, if you need equals in subclasses, you'll implement it. In arrays, there's no implementation for you, so you're not supposed to use it.

So the difference is, Arrays.equals(array1, array2) works as you would expect (i.e. compares content), array1.equals(array2) falls back to Object.equals implementation, which in turn compares identity, and thus better replaced by == (for purists: yes I know about null).

Problem is, even Arrays.equals(array1, array2) will bite you hard if elements of array do not implement equals properly. It's a very naive statement, I know, but there's a very important less-than-obvious case: consider a 2D array.

2D array in Java is an array of arrays, and arrays' equals is broken (or useless if you prefer), so Arrays.equals(array1, array2) will not work as you expect on 2D arrays.

Hope that helps.

If your server is an email server (MS Exchange or Zimbra) maybe you need to add the starttls and smtp flags:

openssl s_client -starttls smtp -connect HOST_EMAIL:SECURE_PORT 2>/dev/null </dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > CERTIFICATE_NAME.pem

Where,

• HOST_EMAIL is the server domain, for example, mail-server.com.

• SECURE_PORT is the communication port, for example, 587 or 465

• CERTIFICATE_NAME output's filename (BASE 64/PEM Format)

Style.css

img#center-img{

 display: block;
 margin: auto;
}

Html

<html>
  <body>
    <div>
      <img src='pic.png' id='center-img'>
    </div>
  </body>
</html>

.parent-wrapper {_x000D_
 height: 100%;_x000D_
 width: 100%;_x000D_
 border: 1px solid black;_x000D_
}_x000D_
 .parent {_x000D_
 display: flex;_x000D_
 font-size: 0;_x000D_
 flex-wrap: wrap;_x000D_
 margin-right: -10px;_x000D_
 margin-bottom: -10px;_x000D_
}_x000D_
 .child {_x000D_
 background: blue;_x000D_
 height: 100px;_x000D_
 flex-grow: 1;_x000D_
 flex-shrink: 0;_x000D_
 flex-basis: calc(25% - 10px);_x000D_
}_x000D_
 .child:nth-child(even) {_x000D_
 margin: 0 10px 10px 10px;_x000D_
 background-color: lime;_x000D_
}_x000D_
 .child:nth-child(odd) {_x000D_
 background-color: orange; _x000D_
}

<!DOCTYPE html>_x000D_
<html lang="en">_x000D_
<head>_x000D_
 <meta charset="UTF-8">_x000D_
 <title>Document</title>_x000D_
 <style type="text/css">_x000D_
_x000D_
 </style>_x000D_
</head>_x000D_
<body>_x000D_
  <div class="parent-wrapper">_x000D_
    <div class="parent">_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
      <div class="child"></div>_x000D_
    </div>_x000D_
  </div>_x000D_
</body>_x000D_
</html>

;)

(using the same example as the guy above)

from matplotlib import pyplot
import numpy
a = numpy.arange(int(1e3))
fig = pyplot.Figure()
ax  = fig.add_subplot(1, 1, 1)
lines = ax.plot(a)

for i, line in enumerate(ax.lines):
    ax.lines.pop(i)
    line.remove()

Here is how I do a Subview on iOS in Swift -

class CustomSubview : UIView {

    init() {
        super.init(frame: UIScreen.mainScreen().bounds);

        let windowHeight : CGFloat = 150;
        let windowWidth  : CGFloat = 360;

        self.backgroundColor = UIColor.whiteColor();
        self.frame = CGRectMake(0, 0, windowWidth, windowHeight);
        self.center = CGPoint(x: UIScreen.mainScreen().bounds.width/2, y: 375);

        //for debug validation
        self.backgroundColor = UIColor.grayColor();
        print("My Custom Init");

        return;
    }

    required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented"); }
}

var classname=$('#div1').attr('class')

You can't define a default constructor because you are using C#.

Structs can have default constructors in .NET, though I don't know of any specific language that supports it.

Late answer, but for python>=3.6 you can use:

import dload
j = dload.json(url)

Install dload with:

pip3 install dload

it's simple only you have do is to give

background: rgba(0,0,0,0.3)

& for IE use this filter

background: transparent;
zoom: 1;    
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#4C000000,endColorstr=#4C000000); /* IE 6 & 7 */
-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#4C000000,endColorstr=#4C000000)"; /* IE8 */

you can generate your rgba filter from here http://kimili.com/journal/rgba-hsla-css-generator-for-internet-explorer/

This article by Atul Gupta has sample code that covers several scenarios:

1. Regular resource image binding to Source property in XAML
2. Binding resource image, but from code behind
3. Binding resource image in code behind by using Application.GetResourceStream
4. Loading image from file path via memory stream (same is applicable when loading blog image data from database)
5. Loading image from file path, but by using binding to a file path Property
6. Binding image data to a user control which internally has image control via dependency property
7. Same as point 5, but also ensuring that the file doesn't get's locked on hard-disk

For ex .. add class:

btn-lg - LARGE

btn-sm - SMALL

btn-xs - Very small

<button type=button class="btn btn-default btn-lg">
<span class="glyphicon glyphicon-star" aria-hidden=true></span> Star
</button> 

<button type=button class="btn btn-default">
<span class="glyphicon glyphicon-star" aria-hidden=true></span>Star
</button>

 <button type=button class="btn btn-default btn-sm">
<span class="glyphicon glyphicon-star" aria-hidden=true></span> Star
</button> 

<button type=button class="btn btn-default btn-xs">
<span class="glyphicon glyphicon-star" aria-hidden=true></span> Star
</button> 

Ref link Bootstrap : Glyphicons Bootstrap

I had the same error message and after lots of trial and error found out that it was caused by an advanced filter which was set on the ListObject. After clearing the advanced filter .listrows.add worked fine again. To clear the filter I use this - no idea how one could clear the filter only for the specific listobject instead of the complete worksheet.

Worksheets("mysheet").ShowAllData

You can launch the "wc.exe" executable (comes with UnixUtils and does not need installation) run as an external process. It supports different line count methods (like unix vs mac vs windows).

You should have a look at the scalax library : http://scalax.scalaforge.org/ In this library, there is a Logging trait, using sl4j as backend. By using this trait, you can log quite easily (just use the logger field in the class inheriting the trait).

Here's mine command for reference:

mongoexport --db AppDB --collection files --pretty --out output.json

On Windows 7 (MongoDB 3.4), one has to move the cmd to the place where mongod.exe and mongo.exe file resides => C:\MongoDB\Server\3.4\bin else it won't work saying it does not recongnize mongoexport command.

In case you are doing it from Windows you can use Python script hivehoney to extract table data to local CSV file.

It will:

1. Login to bastion host.
2. pbrun.
3. kinit.
4. beeline (with your query).
5. Save echo from beeline to a file on Windows.

Execute it like this:

set PROXY_HOST=your_bastion_host

set SERVICE_USER=you_func_user

set LINUX_USER=your_SOID

set LINUX_PWD=your_pwd

python hh.py --query_file=query.sql

We needed to serialise an arbitrary object hierarchy, where the root or any of the nested properties in the hierarchy could be instances of Error.

Our solution was to use the replacer param of JSON.stringify(), e.g.:

function jsonFriendlyErrorReplacer(key, value) {_x000D_
  if (value instanceof Error) {_x000D_
    return {_x000D_
      // Pull all enumerable properties, supporting properties on custom Errors_x000D_
      ...value,_x000D_
      // Explicitly pull Error's non-enumerable properties_x000D_
      name: value.name,_x000D_
      message: value.message,_x000D_
      stack: value.stack,_x000D_
    }_x000D_
  }_x000D_
_x000D_
  return value_x000D_
}_x000D_
_x000D_
let obj = {_x000D_
    error: new Error('nested error message')_x000D_
}_x000D_
_x000D_
console.log('Result WITHOUT custom replacer:', JSON.stringify(obj))_x000D_
console.log('Result WITH custom replacer:', JSON.stringify(obj, jsonFriendlyErrorReplacer))

make sure that your schema name is in the connection string?

It is possible to parse dynamic values in a couple of way.

Interpolation with double-curly braces:

ng-style="{'background-image':'url({{myBackgroundUrl}})'}"

String concatenation:

ng-style="{'background-image': 'url(' + myBackgroundUrl + ')'}"

ES6 template literals:

ng-style="{'background-image': `url(${myBackgroundUrl})`}"

Of these two, the first one is a type mistake: '\0' is a character, not a pointer. The compiler still accepts it because it can convert it to a pointer.

The second one "works" only by coincidence. "\0" is a string literal of two characters. If those occur in multiple places in the source file, the compiler may, but need not, make them identical.

So the proper way to write the first one is

char* array[] = { "abc", "def", NULL };

and you test for array[index]==NULL. The proper way to test for the second one is array[index][0]=='\0'; you may also drop the '\0' in the string (i.e. spell it as "") since that will already include a null byte.

If you come across a multidimensional array that is pure data, like this one below, then you can use a single call to array_merge() to do the job via reflection:

$arrayMult = [ ['a','b'] , ['c', 'd'] ];
$arraySingle = call_user_func_array('array_merge', $arrayMult);
// $arraySingle is now = ['a','b', 'c', 'd'];

As Paul stated, it's because 'a' is an int in C but a char in C++.

I cover that specific difference between C and C++ in something I wrote a few years ago, at: http://david.tribble.com/text/cdiffs.htm

Oddly nobody mentioned mobx. The idea is similar to redux. If I have a piece of data that multiple components are subscribed to it, then I can use this data to drive multiple components.

You can stop banging your heads now. Here is the wrapper for the member function to support existing functions taking in plain C functions as arguments. thread_local directive is the key here.

http://cpp.sh/9jhk3

// Example program
#include <iostream>
#include <string>

using namespace std;

typedef int FooCooker_ (int);

// Existing function
extern "C" void cook_10_foo (FooCooker_ FooCooker) {
    cout << "Cooking 10 Foo ..." << endl;
    cout << "FooCooker:" << endl;
    FooCooker (10);
}

struct Bar_ {
    Bar_ (int Foo = 0) : Foo (Foo) {};
    int cook (int Foo) {
        cout << "This Bar got " << this->Foo << endl;
        if (this->Foo >= Foo) {
            this->Foo -= Foo;
            cout << Foo << " cooked" << endl;
            return Foo;
        } else {
            cout << "Can't cook " <<  Foo << endl;
            return 0;
        }
    }
    int Foo = 0;
};

// Each Bar_ object and a member function need to define
// their own wrapper with a global thread_local object ptr
// to be called as a plain C function.
thread_local static Bar_* BarPtr = NULL;
static int cook_in_Bar (int Foo) {
    return BarPtr->cook (Foo);
}

thread_local static Bar_* Bar2Ptr = NULL;
static int cook_in_Bar2 (int Foo) {
    return Bar2Ptr->cook (Foo);
}

int main () {
  BarPtr = new Bar_ (20);
  cook_10_foo (cook_in_Bar);

  Bar2Ptr = new Bar_ (40);
  cook_10_foo (cook_in_Bar2);

  delete BarPtr;
  delete Bar2Ptr;
  return 0;
}

Please comment on any issues with this approach.

Other answers fail to call existing plain C functions: http://cpp.sh/8exun

The str.split() method without an argument splits on whitespace:

>>> "many   fancy word \nhello    \thi".split()
['many', 'fancy', 'word', 'hello', 'hi']

Use @Spy annotation

@RunWith(MockitoJUnitRunner.class)
public class DemoTest {
    @Spy
    private SomeService service = new RealServiceImpl();

    @InjectMocks
    private Demo demo;

    /* ... */
}

Mockito will consider all fields having @Mock or @Spy annotation as potential candidates to be injected into the instance annotated with @InjectMocks annotation. In the above case 'RealServiceImpl' instance will get injected into the 'demo'

For more details refer

Mockito-home

@Spy

@Mock

Just put quotes around the Environment variable (as you have done) :
if "%DevEnvDir%" == "C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\"
but it's the way you put opening bracket without a space that is confusing it.

Works for me...

C:\if "%gtk_basepath%" == "C:\Program Files\GtkSharp\2.12\" (echo yes)
yes

The accepted answer here indeed makes a json from a form, but the json contents is really a string with url-encoded contents.

To make a more realistic json POST, use some solution from Serialize form data to JSON to make formToJson function and add contentType: 'application/json;charset=UTF-8' to the jQuery ajax call parameters.

$.ajax({
    url: 'test.php',
    type: "POST",
    dataType: 'json',
    data: formToJson($("form")),
    contentType: 'application/json;charset=UTF-8',
    ...
})

To remove from all tables, (add this to the head or external style sheet)

<style type="text/css">
table td{
border:none;
}
</style>

Dictionary<string, List<string>> dictionary = new Dictionary<string,List<string>>();

foreach(string key in keys) {
    if(!dictionary.ContainsKey(key)) {
        //add
        dictionary.Add(key, new List<string>());
    }
    dictionary[key].Add("theString");
}

If the key doesn't exist, a new List is added (inside if). Else the key exists, so just add a new value to the List under that key.

Public Class Form1

   Public Shared SomeValue As Integer = 5

End Class

The answer:

MessageBox.Show("this is the number"&GlobalVariables.SomeValue)

Its kind of relative path Instead of the below code

import { Something } from "../../../../../lib/src/[browser/server/universal]/...";

We can avoid the "../../../../../" its looking odd and not readable too.

So Typescript config file have answer for the same. Just specify the baseUrl, config will take care of your relative path.

way to config: tsconfig.json file add the below properties.

"baseUrl": "src",
    "paths": {
      "@app/*": [ "app/*" ],
      "@env/*": [ "environments/*" ]
    }

So Finally it will look like below

import { Something } from "@app/src/[browser/server/universal]/...";

Its looks simple,awesome and more readable..

create table myTable 
(
    Column1 int not null,
    Column2 int not null
)
GO


ALTER TABLE myTable
    ADD  PRIMARY KEY (Column1,Column2)
GO

As discussed, svgs render in order and don't take z-index into account (for now). Maybe just send the specific element to the bottom of its parent so that it'll render last.

function bringToTop(targetElement){
  // put the element at the bottom of its parent
  let parent = targetElement.parentNode;
  parent.appendChild(targetElement);
}

// then just pass through the element you wish to bring to the top
bringToTop(document.getElementById("one"));

Worked for me.

Update

If you have a nested SVG, containing groups, you'll need to bring the item out of its parentNode.

function bringToTopofSVG(targetElement){
  let parent = targetElement.ownerSVGElement;
  parent.appendChild(targetElement);
}

A nice feature of SVG's is that each element contains it's location regardless of what group it's nested in :+1:

As a note, the SQL Server Activity Monitor for SQL Server 2008 can be found by right clicking your current server and going to "Activity Monitor" in the context menu. I found this was easiest way to kill processes if you are using the SQL Server Management Studio.

You can use set with the /p argument:

SET /P variable=[promptString]

The /P switch allows you to set the value of a variable to a line of input entered by the user. Displays the specified promptString before reading the line of input. The promptString can be empty.

So, simply use something like

set /p Input=Enter some text: 

Later you can use that variable as argument to a command:

myCommand %Input%

Be careful though, that if your input might contain spaces it's probably a good idea to quote it:

myCommand "%Input%"

We don't have any way to add volume in running container, but to achieve this objective you may use the below commands:

Copy files/folders between a container and the local filesystem:

docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH

docker cp [OPTIONS] SRC_PATH CONTAINER:DEST_PATH

For reference see:

https://docs.docker.com/engine/reference/commandline/cp/

You should use Terms Query

{
    "query" : {
        "terms" : {
            "tags" : ["c", "d"]
        }
    }
}

You are correct in that the entire transaction will be rolled back. You should issue the command to roll it back.

You can wrap this in a TRY CATCH block as follows

BEGIN TRY
    BEGIN TRANSACTION

        INSERT INTO myTable (myColumns ...) VALUES (myValues ...);
        INSERT INTO myTable (myColumns ...) VALUES (myValues ...);
        INSERT INTO myTable (myColumns ...) VALUES (myValues ...);

    COMMIT TRAN -- Transaction Success!
END TRY
BEGIN CATCH
    IF @@TRANCOUNT > 0
        ROLLBACK TRAN --RollBack in case of Error

    -- you can Raise ERROR with RAISEERROR() Statement including the details of the exception
    RAISERROR(ERROR_MESSAGE(), ERROR_SEVERITY(), 1)
END CATCH

Not sure if it's what you mean, but you can do this:

plot(1:10, xaxt = "n", xlab='Some Letters')
axis(1, at=1:10, labels=letters[1:10])

which then gives you the graph:

The $.prop way is better:

$(document).ready(function () {                            
    $("#radio_1").prop('checked', true);        
});

and you can test it like the following:

$(document).ready(function () {                            
    $("#radio_1, #radio_2", "#radio_3").change(function () {
        if ($("#radio_1").is(":checked")) {
            $('#div1').show();
        }
        else if ($("#radio_2").is(":checked")) {
            $('#div2').show();
        }
        else 
            $('#div3').show();
    });        
});

Here is OOP:

import MySQLdb


class Database:

    host = 'localhost'
    user = 'root'
    password = '123'
    db = 'test'

    def __init__(self):
        self.connection = MySQLdb.connect(self.host, self.user, self.password, self.db)
        self.cursor = self.connection.cursor()

    def insert(self, query):
        try:
            self.cursor.execute(query)
            self.connection.commit()
        except:
            self.connection.rollback()



    def query(self, query):
        cursor = self.connection.cursor( MySQLdb.cursors.DictCursor )
        cursor.execute(query)

        return cursor.fetchall()

    def __del__(self):
        self.connection.close()


if __name__ == "__main__":

    db = Database()

    #CleanUp Operation
    del_query = "DELETE FROM basic_python_database"
    db.insert(del_query)

    # Data Insert into the table
    query = """
        INSERT INTO basic_python_database
        (`name`, `age`)
        VALUES
        ('Mike', 21),
        ('Michael', 21),
        ('Imran', 21)
        """

    # db.query(query)
    db.insert(query)

    # Data retrieved from the table
    select_query = """
        SELECT * FROM basic_python_database
        WHERE age = 21
        """

    people = db.query(select_query)

    for person in people:
        print "Found %s " % person['name']

You can input variables via switch -e

$ gnuplot -e "filename='foo.data'" foo.plg

In foo.plg you can then use that variable

$ cat foo.plg 
plot filename
pause -1

To make "foo.plg" a bit more generic, use a conditional:

if (!exists("filename")) filename='default.dat'
plot filename
pause -1

Note that -e has to precede the filename otherwise the file runs before the -e statements. In particular, running a shebang gnuplot #!/usr/bin/env gnuplot with ./foo.plg -e ... CLI arguments will ignore use the arguments provided.

         while ((line = stringReader.ReadLine()) != null)
         {
             // split the lines
             for (int c = 0; c < line.Length; c++)
             {
                 line = line.Replace("\\", "");
                 lineBreakOne = line.Substring(1, c - 2);
                 lineBreakTwo = line.Substring(c + 2, line.Length - 2);
             }
         }

It's as simple as this:

String xmlfile = Data_Array["XML_File"];

Note that if the dictionary doesn't have a key that equals "XML_File", that code will throw an exception. If you want to check first, you can use TryGetValue like this:

string xmlfile;
if (!Data_Array.TryGetValue("XML_File", out xmlfile)) {
   // the key isn't in the dictionary.
   return; // or whatever you want to do
}
// xmlfile is now equal to the value

Same problem but @Angelo answer didn't work for me, because I'm using same server with different credentials. I used the approach below and tested it on Windows 10.

cmdkey /add:server01 /user:<username> /pass:<password>

Then used mstsc /v:server01 to connect to the server.

The point is to use names instead of ip addresses to avoid conflict between credentials. If you don't have a DNS server locally accessible try c:\windows\system32\drivers\etc\hosts file.

I tried to resolve with the suggested answer and still ran into some issues...

This was a solution to my problem:

ARG APP_EXE="AppName.exe"
ENV _EXE=${APP_EXE}

# Build a shell script because the ENTRYPOINT command doesn't like using ENV
RUN echo "#!/bin/bash \n mono ${_EXE}" > ./entrypoint.sh
RUN chmod +x ./entrypoint.sh

# Run the generated shell script.
ENTRYPOINT ["./entrypoint.sh"]

Specifically targeting your problem:

RUN echo "#!/bin/bash \n ./greeting --message ${ADDRESSEE}" > ./entrypoint.sh
RUN chmod +x ./entrypoint.sh
ENTRYPOINT ["./entrypoint.sh"]

Are you using php 5.4 on your local? the render line is using the new way of initializing arrays. Try replacing ["title" => "Welcome "] with array("title" => "Welcome ")

It should be

if (*message == '\0')

In C, simple quotes delimit a single character whereas double quotes are for strings.

Assuming Java (JDK + JRE) is installed in your system, do the following:

1. Install Tomcat7
2. Copy 'tools.jar' from 'C:\Program Files (x86)\Java\jdk1.6.0_27\lib' and pasted it under 'C:\Program Files (x86)\Apache Software Foundation\Tomcat 7.0\lib'.
3. Setup paths in your Environment Variables as shown below:

C:/>javap javax.servlet.http.HttpServletRequest

It should show a bunch of classes

The blocksize is usually selected to maximize the "occupancy". Search on CUDA Occupancy for more information. In particular, see the CUDA Occupancy Calculator spreadsheet.

I have faced the same issue. Here is how I have fixed it.

Step 1: Remove mysql using command:

brew uninstall --force mysql

Step 2: Run command brew doctor which will give you some hint related to your brew packages.

Step 3: Cleanup brew packages using command:

brew cleanup

Step 4: Move/delete previously installed mysql data using command:

mv /usr/local/var/mysql/ /usr/local/var/old_mysql

Step 5: Finally install mysql again using command:

brew install mysql

This is a big gray area in cookie SOP (Same Origin Policy).

Theoretically, you can specify port number in the domain and the cookie will not be shared. In practice, this doesn't work with several browsers and you will run into other issues. So this is only feasible if your sites are not for general public and you can control what browsers to use.

The better approach is to get 2 domain names for the same IP and not relying on port numbers for cookies.

Here's a jQuery solution.

<script type="text/javascript" src="/path/to/your/copy/of/jquery-1.3.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
    $("#sub1").mouseover(function() {
        $("#welcome").toggle();
    });
});
</script>

Using this markup:

<div id="sub1">some text</div>
<div id="welcome" style="display:none;">Welcome message</div>

You didn't really specify if (or when) you wanted to hide the welcome message, but this would toggle hiding or showing each time you moused over the text.

The proper way to run echo "$ENV_VAR" inside the container so that the variable substitution happens in the container is:

docker exec <container_id> bash -c 'echo "$ENV_VAR"'

Delete all files under the .m2 repository folder and rebuild the project.

This is how you can approach these problems in general on your own:

The first of the pair can be picked in N (=100) ways. You don't want to pick this item again, so the second of the pair can be picked in N-1 (=99) ways. In total you can pick 2 items out of N in N(N-1) (= 100*99=9900) different ways.

But hold on, this way you count also different orderings: AB and BA are both counted. Since every pair is counted twice you have to divide N(N-1) by two (the number of ways that you can order a list of two items). The number of subsets of two that you can make with a set of N is then N(N-1)/2 (= 9900/2 = 4950).

For primitives and Strings:

/** The empty String. */
const val EMPTY_STRING = ""

For other cases:

/** The empty array of Strings. */
@JvmField val EMPTY_STRING_ARRAY = arrayOfNulls<String>(0)

Example:

/*
 * Copyright 2018 Vorlonsoft LLC
 *
 * Licensed under The MIT License (MIT)
 */

package com.vorlonsoft.android.rate

import com.vorlonsoft.android.rate.Constants.Utils.Companion.UTILITY_CLASS_MESSAGE

/**
 * Constants Class - the constants class of the AndroidRate library.
 *
 * @constructor Constants is a utility class and it can't be instantiated.
 * @since       1.1.8
 * @version     1.2.1
 * @author      Alexander Savin
 */
internal class Constants private constructor() {
    /** Constants Class initializer block. */
    init {
        throw UnsupportedOperationException("Constants$UTILITY_CLASS_MESSAGE")
    }

    /**
     * Constants.Date Class - the date constants class of the AndroidRate library.
     *
     * @constructor Constants.Date is a utility class and it can't be instantiated.
     * @since       1.1.8
     * @version     1.2.1
     * @author      Alexander Savin
     */
    internal class Date private constructor() {
        /** Constants.Date Class initializer block. */
        init {
            throw UnsupportedOperationException("Constants.Date$UTILITY_CLASS_MESSAGE")
        }

        /** The singleton contains date constants. */
        companion object {
            /** The time unit representing one year in days. */
            const val YEAR_IN_DAYS = 365.toShort()
        }
    }

    /**
     * Constants.Utils Class - the utils constants class of the AndroidRate library.
     *
     * @constructor Constants.Utils is a utility class and it can't be instantiated.
     * @since       1.1.8
     * @version     1.2.1
     * @author      Alexander Savin
     */
    internal class Utils private constructor() {
        /** Constants.Utils Class initializer block. */
        init {
            throw UnsupportedOperationException("Constants.Utils$UTILITY_CLASS_MESSAGE")
        }

        /** The singleton contains utils constants. */
        companion object {
            /** The empty String. */
            const val EMPTY_STRING = ""
            /** The empty array of Strings. */
            @JvmField val EMPTY_STRING_ARRAY = arrayOfNulls<String>(0)
            /** The part 2 of a utility class unsupported operation exception message. */
            const val UTILITY_CLASS_MESSAGE = " is a utility class and it can't be instantiated!"
        }
    }
}

$scope.trustAsHtml=function(scope)
{
    return $sce.trustAsHtml(scope);
}
<p class="card-text w-100" ng-bind-html="trustAsHtml(note.redoq_csd_product_lead_note)"></p>

Just for fun, I'm going to use a single event on the whole document instead of adding an event to all the anchor tags:

document.body.onclick = function( e ) {
    // Cross-browser handling
    var evt = e || window.event,
        target = evt.target || evt.srcElement;

    // If the element clicked is an anchor
    if ( target.nodeName === 'A' ) {

        // Add the confirm box
        return confirm( 'Are you sure?' );
    }
};

This method would be more efficient if you had many anchor tags. Of course, it becomes even more efficient when you add this event to the container having all the anchor tags.

For me, the error was a result of a third-party library that I imported that used older Google Support Library modules. I simply updated them to the latest version (checking on Github for example), and the error was gone. I suggest checking all the non-Google libraries that you included in your build.gradle are up to date.

If the variable ax.xaxis._autolabelpos = True, matplotlib sets the label position in function _update_label_position in axis.py according to (some excerpts):

    bboxes, bboxes2 = self._get_tick_bboxes(ticks_to_draw, renderer)
    bbox = mtransforms.Bbox.union(bboxes)
    bottom = bbox.y0
    x, y = self.label.get_position()
    self.label.set_position((x, bottom - self.labelpad * self.figure.dpi / 72.0))

You can set the label position independently of the ticks by using:

    ax.xaxis.set_label_coords(x0, y0)

that sets _autolabelpos to False or as mentioned above by changing the labelpad parameter.

Another option using linq is

[TestMethod]
public void Test()
{
  var input = "it's worth a lot of money, if you can find a buyer.";
  var expected = "its worth a lot of money if you can find a buyer";
  var removeList = new string[] { ".", ",", "'" };
  var result = input;

  removeList.ToList().ForEach(o => result = result.Replace(o, string.Empty));

  Assert.AreEqual(expected, result);
}

As a practical solution:

1. Quickly make piles of easily distinguishable socks. (Say by color)
2. Quicksort every pile and use the length of the sock for comparison. As a human you can make a fairly quick decision which sock to use to partition that avoids worst case. (You can see multiple socks in parallel, use that to your advantage!)
3. Stop sorting piles when they reached a threshold at which you are comfortable to find spot pairs and unpairable socks instantly

If you have 1000 socks, with 8 colors and an average distribution, you can make 4 piles of each 125 socks in c*n time. With a threshold of 5 socks you can sort every pile in 6 runs. (Counting 2 seconds to throw a sock on the right pile it will take you little under 4 hours.)

If you have just 60 socks, 3 colors and 2 sort of socks (yours / your wife's) you can sort every pile of 10 socks in 1 runs (Again threshold = 5). (Counting 2 seconds it will take you 2 min).

The initial bucket sorting will speed up your process, because it divides your n socks into k buckets in c*n time so than you will only have to do c*n*log(k) work. (Not taking into account the threshold). So all in all you do about n*c*(1 + log(k)) work, where c is the time to throw a sock on a pile.

This approach will be favourable compared to any c*x*n + O(1) method roughly as long as log(k) < x - 1.

In computer science this can be helpful: We have a collection of n things, an order on them (length) and also an equivalence relation (extra information, for example the color of socks). The equivalence relation allows us to make a partition of the original collection, and in every equivalence class our order is still maintained. The mapping of a thing to it's equivalence class can be done in O(1), so only O(n) is needed to assign each item to a class. Now we have used our extra information and can proceed in any manner to sort every class. The advantage is that the data sets are already significantly smaller.

The method can also be nested, if we have multiple equivalence relations -> make colour piles, than within every pile partition on texture, than sort on length. Any equivalence relation that creates a partition with more than 2 elements that have about even size will bring a speed improvement over sorting (provided we can directly assign a sock to its pile), and the sorting can happen very quickly on smaller data sets.

You want the 'change' event handler, instead of 'click'.

$('#mySelect').change(function(){ 
    var value = $(this).val();
});

Try this :

Windows:

Fire below commands in CMD to start a new instance of chrome browser with disabled security

Go to Chrome folder:

cd C:\Program Files (x86)\Google\Chrome\Application

Run below command:

chrome.exe --disable-web-security --user-data-dir=c:\my-chrome-data\data

MAC OS:

Run this command in terminal:

open -n -a /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --args --user-data-dir="/tmp/chrome_dev_sess_1" --disable-web-security

Hope this will help both Windows & Mac users!

Or just use $json as an object:

$json->$user = array("first" => $first, "last" => $last);

This is how it is returned without the second parameter (as an instance of stdClass).

That worked

<audio src="${ song.url }" id="audio"></audio>
<i class="glyphicon glyphicon-play-circle b-play" id="play" onclick="play()"></i>

<script>
    function play() {
        var audio = document.getElementById('audio');
        if (audio.paused) {
            audio.play();
            $('#play').removeClass('glyphicon-play-circle')
            $('#play').addClass('glyphicon-pause')
        }else{
            audio.pause();
            audio.currentTime = 0
            $('#play').addClass('glyphicon-play-circle')
            $('#play').removeClass('glyphicon-pause')
        }
    }
</script>

Am going to try and add value to this very good question and to build on @BrittonKerin's question in one of the comments under @David Wolever's fantastic answer. Wanted to share here because I had the same challenge as @BrittonKerin and I got something working (i.e. just want to run a piece of code only IF the table doesn't exist).

        # for completeness lets do the routine thing of connections and cursors
        conn = sqlite3.connect(db_file, timeout=1000) 

        cursor = conn.cursor() 

        # get the count of tables with the name  
        tablename = 'KABOOM' 
        cursor.execute("SELECT count(name) FROM sqlite_master WHERE type='table' AND name=? ", (tablename, ))

        print(cursor.fetchone()) # this SHOULD BE in a tuple containing count(name) integer.

        # check if the db has existing table named KABOOM
        # if the count is 1, then table exists 
        if cursor.fetchone()[0] ==1 : 
            print('Table exists. I can do my custom stuff here now.... ')
            pass
        else: 
           # then table doesn't exist. 
           custRET = myCustFunc(foo,bar) # replace this with your custom logic

It can be done all on the client-side using the OnClientClick^[MSDN] event handler and window.open^[MDN]:

<asp:Button 
     runat="server" 
     OnClientClick="window.open('http://www.stackoverflow.com'); return false;">
     Open a new window!
</asp:Button>

You can use EXCEPT syntax, for example:

SELECT var FROM table1
EXCEPT
SELECT var FROM table2

There is a really nice answer to this problem at MySQL - How To Get Top N Rows per Each Group

Based on the solution in the referenced link, your query would be like:

SELECT Person, Group, Age
   FROM
     (SELECT Person, Group, Age, 
                  @group_rank := IF(@group = Group, @group_rank + 1, 1) AS group_rank,
                  @current_group := Group 
       FROM `your_table`
       ORDER BY Group, Age DESC
     ) ranked
   WHERE group_rank <= `n`
   ORDER BY Group, Age DESC;

where n is the top n and your_table is the name of your table.

I think the explanation in the reference is really clear. For quick reference I will copy and paste it here:

Currently MySQL does not support ROW_NUMBER() function that can assign a sequence number within a group, but as a workaround we can use MySQL session variables.

These variables do not require declaration, and can be used in a query to do calculations and to store intermediate results.

@current_country := country This code is executed for each row and stores the value of country column to @current_country variable.

@country_rank := IF(@current_country = country, @country_rank + 1, 1) In this code, if @current_country is the same we increment rank, otherwise set it to 1. For the first row @current_country is NULL, so rank is also set to 1.

For correct ranking, we need to have ORDER BY country, population DESC

Here's a simple lock mechanism, implemented via closure

const createLock = () => {

    let lockStatus = false

    const release = () => {
        lockStatus = false
    }

    const acuire = () => {
        if (lockStatus == true)
            return false
        lockStatus = true
        return true
    }
    
    return {
        lockStatus: lockStatus, 
        acuire: acuire,
        release: release,
    }
}

lock = createLock() // create a lock
lock.acuire() // acuired a lock

if (lock.acuire()){
  console.log("Was able to acuire");
} else {
  console.log("Was not to acuire"); // This will execute
}

lock.release() // now the lock is released

if(lock.acuire()){
  console.log("Was able to acuire"); // This will execute
} else {
  console.log("Was not to acuire"); 
}

lock.release() // Hey don't forget to release

You can't really do it the C way (I think) but a pythonic way of doing this would be (if your 'inputs' have spaces in between them):

raw_answer = raw_input()
answers = raw_answer.split(' ') # list of 'answers'

So you could rewrite your try to:

var1, var2 = raw_input("enter two numbers:").split(' ')

Note that this it somewhat less flexible than using the 'first' solution (for example if you add a space at the end this will already break).

Also be aware that var1 and var2 will still be strings with this method when not cast to int.

JavaScript is executed in the browser, which is pretty far removed from Eclipse. Eclipse would have to somehow hook into the browser's JavaScript engine to debug it. Therefore there's no built-in debugging of JavaScript via Eclipse, since JS isn't really its main focus anyways.

However, there are plug-ins which you can install to do JavaScript debugging. I believe the main one is the AJAX Toolkit Framework (ATF). It embeds a Mozilla browser in Eclipse in order to do its debugging, so it won't be able to handle cross-browser complications that typically arise when writing JavaScript, but it will certainly help.

Have you tried mysql_ping()?

Update: From PHP 5.5 onwards, use mysqli_ping() instead.

Pings a server connection, or tries to reconnect if the connection has gone down.

if ($mysqli->ping()) {
  printf ("Our connection is ok!\n"); 
} else {
  printf ("Error: %s\n", $mysqli->error); 
}

Alternatively, a second (less reliable) approach would be:

$link = mysql_connect('localhost','username','password');
//(...)
if($link == false){
    //try to reconnect
}

If you really want a thematic break, by all means use the <hr> tag.

If you just want a design line, you could use something like the css class

.hline-bottom {
    padding-bottom: 10px;
    border-bottom: 2px solid #000; /* whichever color you prefer */
}

and use it like

<div class="block_1 hline-bottom">Cheese</div>

max function is used to get the maximum out of an iterable.

The iterators may be lists, tuples, dict objects, etc. Or even custom objects as in the example you provided.

max(iterable[, key=func]) -> value
max(a, b, c, ...[, key=func]) -> value

With a single iterable argument, return its largest item.
With two or more arguments, return the largest argument.

So, the key=func basically allows us to pass an optional argument key to the function on whose basis is the given iterator/arguments are sorted & the maximum is returned.

lambda is a python keyword that acts as a pseudo function. So, when you pass player object to it, it will return player.totalScore. Thus, the iterable passed over to function max will sort according to the key totalScore of the player objects given to it & will return the player who has maximum totalScore.

If no key argument is provided, the maximum is returned according to default Python orderings.

Examples -

max(1, 3, 5, 7)
>>>7
max([1, 3, 5, 7])
>>>7

people = [('Barack', 'Obama'), ('Oprah', 'Winfrey'), ('Mahatma', 'Gandhi')]
max(people, key=lambda x: x[1])
>>>('Oprah', 'Winfrey')

I had the same problem and after looking around I found this:

SELECT DATENAME(yyyy, date) AS year
FROM Income
GROUP BY DATENAME(yyyy, date)

It's working great!

append adds an element to a list, and extend concatenates the first list with another list (or another iterable, not necessarily a list.)

>>> li = ['a', 'b', 'mpilgrim', 'z', 'example']
>>> li
['a', 'b', 'mpilgrim', 'z', 'example']

>>> li.append("new")
>>> li
['a', 'b', 'mpilgrim', 'z', 'example', 'new']

>>> li.append(["new", 2])
>>> li
['a', 'b', 'mpilgrim', 'z', 'example', 'new', ['new', 2]]

>>> li.insert(2, "new")
>>> li
['a', 'b', 'new', 'mpilgrim', 'z', 'example', 'new', ['new', 2]]

>>> li.extend(["two", "elements"])
>>> li
['a', 'b', 'new', 'mpilgrim', 'z', 'example', 'new', ['new', 2], 'two', 'elements']

if you have this already and use jquery this will be your answer:

$($(this)[0].selectedOptions[0]).text()

glibc provides backtrace() function.

http://www.gnu.org/software/libc/manual/html_node/Backtraces.html

React 17 delegates events to root instead of document, which might solve the problem. More details here.

Depending on your needs you might go for the more feature-rich libraries. I tried most/all of the solutions suggested, but what stood out head & shoulders was Html Agility Pack. It is a very forgiving and flexible parser.

You could use an OrderedDictionary, but I would question why you would want to do that.

This is an error that you see when your emulator has the "Use host GPU" setting checked. If you uncheck it then the error goes away. Of course, then your emulator is not as responsive anymore.

The easiest way to do this is to use the Joda DateTime class and specify both the timestamp in milliseconds and the DateTimeZone you want.

I strongly recommend avoiding the built-in Java Date and Calendar classes; they're terrible.

The new Network framework has failable initializers for struct IPv4Address and struct IPv6Address which handle the IP address portion very easily. Doing this in IPv6 with a regex is tough with all the shortening rules.

Unfortunately I don't have an elegant answer for hostname.

Note that Network framework is recent, so it may force you to compile for recent OS versions.

import Network
let tests = ["192.168.4.4","fkjhwojfw","192.168.4.4.4","2620:3","2620::33"]

for test in tests {
    if let _ = IPv4Address(test) {
        debugPrint("\(test) is valid ipv4 address")
    } else if let _ = IPv6Address(test) {
        debugPrint("\(test) is valid ipv6 address")
    } else {
        debugPrint("\(test) is not a valid IP address")
    }
}

output:
"192.168.4.4 is valid ipv4 address"
"fkjhwojfw is not a valid IP address"
"192.168.4.4.4 is not a valid IP address"
"2620:3 is not a valid IP address"
"2620::33 is valid ipv6 address"

UPDATE: Since 2.8 this no longer works because assetic is no longer included by default. Although if you're using assetic this will work.

You can use the variable %assetic.write_to%.

$this->getParameter('assetic.write_to');

Since your assets depend on this variable to be dumped to your web directory, it's safe to assume and use to locate your web folder.

http://symfony.com/doc/current/reference/configuration/assetic.html

Creating ad-hoc distribution profiles

The instructions that Apple provides are here, but here is how I created a general provisioning profile that will work with multiple apps, and added a beta tester.

My setup:

• Xcode 3.2.1
• iPhone SDK 3.1.3

Before you get started, make sure that..

• You can run the app on your own iPhone through Xcode.

Step A: Add devices to the Provisioning Portal

1. Send an email to each beta tester with the following message:

   To get my app on onto your iPhone I need some information about your phone. Guess what, there is an app for that!

   Click on the below link and install and then run the app.

   http://itunes.apple.com/app/ad-hoc-helper/id285691333?mt=8

   This app will create an email. Please send it to me.

2. Collect all the UDIDs from your testers.

3. Go to the Provisioning Portal.

4. Go to the section Devices.

5. Click on the button Add Devices and add the devices previously collected.

Step B: Create a new provisioning profile

1. Start the Mac OS utility program Keychain Access.

2. In its main menu, select Keychain Access / Certificate Assistant / Request a Certificate From a Certificate Authority...

3. The dialog that pops up should aready have your email and name it it.

4. Select the radio button Saved to disk and Continue.

5. Save the file to disk.

6. Go back to the Provisioning Portal.

7. Go to the section Certificates.

8. Go to the tab Distribution.

9. Click the button Request Certificate.

10. Upload the file you created with Keychain Access: CertificateSigningRequest.certSigningRequest.

11. Click the button Aprove.

12. Refresh your browser until the status reads Issued.

13. Click the Download button and save the file distribution_identify.cer.

14. Doubleclick the file to add it to the Keychain.

15. Backup the certificate by selecting its private key and the File / Export Items....

16. Go back to the Provisioning Portal again.

17. Go to the section Provisioning.

18. Go to the tab Distribution.

19. Click the button New Profile.

20. Select the radio button Ad hoc.

21. Enter a profile name, I named mine Evertsson Common Ad Hoc.

22. Select the app id. I have a common app id to use for multiple apps: Evertsson Common.

23. Select the devices, in my case my own and my tester's.

24. Submit.

25. Refresh the browser until the status field reads Active.

26. Click the button Download and save the file to disk.

27. Doubleclick the file to add it to Xcode.

Step C: Build the app for distribution

1. Open your project in Xcode.

2. Open the Project Info pane: In Groups & Files select the topmost item and press Cmd+I.

3. Go to the tab Configuration.

4. Select the configuration Release.

5. Click the button Duplicate and name it Distribution.

6. Close the Project Info pane.

7. Open the Target Info pane: In Groups & Files expand Targets, select your target and press Cmd+I.

8. Go to the tab Build.

9. Select the Configuration named Distribution.

10. Find the section Code Signing.

11. Set the value of Code Signing Identity / Any iPhone OS Device to iPhone Distribution.

12. Close the Target Info pane.

13. In the main window select the Active Configuration to Distribution.

14. Create a new file from the file template Code Signing / Entitlements.

15. Name it Entitlements.plist.

16. In this file, uncheck the checkbox get-task-allow.

17. Bring up the Target Info pane, and find the section Code Signing again.

18. After Code Signing Entitlements enter the file name Entitlements.plist.

19. Save, clean, and build the project.

20. In Groups & Files find the folder MyApp / Products and expand it.

21. Right click the app and select Reveal in Finder.

22. Zip the .app file and the .mobileprovision file and send the archive to your tester.

    Here is my app. To install it onto your phone:

    1. Unzip the archive file.

    2. Open iTunes.

    3. Drag both files into iTunes and drop them on the Library group.

    4. Sync your phone to install the app.

Done! Phew. This worked for me. So far I've only added one tester.

You can use something like this

<div class="row">
     <div class="col-xs-2">
       <select id="info_type" class="form-control">
             <option>College</option>
             <option>Exam</option>
       </select>
     </div>
</div>

http://getbootstrap.com/css/#column-sizing

In Android Studio there is a built-in tool to adjust the color and alpha/opacity value:

Explanation with example:
https://devdeeds.com/how-to-add-custom-color-to-views-in-xml-android-studio-ide/

To get the names of current directory we can use getcwd() or dirname(__FILE__) but getcwd() and dirname(__FILE__) are not synonymous. They do exactly what their names are. If your code is running by referring a class in another file which exists in some other directory then these both methods will return different results.

For example if I am calling a class, from where these two functions are invoked and the class exists in some /controller/goodclass.php from /index.php then getcwd() will return '/ and dirname(__FILE__) will return /controller.

I have used this a few moments ago, requires the least potentially destructive commands:

cd existing-dir
git clone --bare repo-to-clone .git
git config --unset core.bare
git remote rm origin
git remote add origin repo-to-clone
git reset

And voilá!

One line in XML

<View
    android:rotation="45"
    ... />

you have to use nested angular.forEach loops for JSON as shown below:

 var values = [
        {
            "name":"Thomas",
            "password":"thomas"
        },
        { 
            "name":"linda",
            "password":"linda"
        }];

    angular.forEach(values,function(value,key){
        angular.forEach(value,function(v1,k1){//this is nested angular.forEach loop
            console.log(k1+":"+v1);
        });
    });

Write this code

<?php
    if(isset($_POST['submit'])){
        echo 'Hello World';
    } 
?>

<html>
     <body>
         <form method="post">
             <input type="text" name="studentname">
             <input type="submit" name="submit" value="click">
         </form>
     </body>
</html>

Sometimes a website doesn't work on my PC and I want to know if it's the website or a problem local to me(e.g. my ISP, my router, etc).

The simplest way to check a website and avoid using your local network resources(and thus avoid any problems caused by them) is using a web proxy such as Proxy.org.

You can build it with list comprehension like this:

>>> dict((i, range(int(i), int(i) + 2)) for i in ['1', '2'])
{'1': [1, 2], '2': [2, 3]}

And for the second part of your question use defaultdict

>>> from collections import defaultdict
>>> s = [('yellow', 1), ('blue', 2), ('yellow', 3), ('blue', 4), ('red', 1)]
>>> d = defaultdict(list)
>>> for k, v in s:
        d[k].append(v)

>>> d.items()
[('blue', [2, 4]), ('red', [1]), ('yellow', [1, 3])]

One line of code using jQuery:

$('td:nth-child(2)').hide();

// If your table has header(th), use this:
//$('td:nth-child(2),th:nth-child(2)').hide();

Source: Hide a Table Column with a Single line of jQuery code

You can do this in two ways:

1. ElementMatch - $elemMatch (as explained in above answers)

   db.users.find({ awards: { $elemMatch: {award:'Turing Award', year:1977} } })

2. Use $and with find

   db.getCollection('users').find({"$and":[{"awards.award":"Turing Award"},{"awards.year":1977}]})

import java.io.File;
public class Test {
    public static void main( String [] args ) {
        File actual = new File(".");
        for( File f : actual.listFiles()){
            System.out.println( f.getName() );
        }
    }
}

It displays indistinctly files and folders.

See the methods in File class to order them or avoid directory print etc.

http://java.sun.com/javase/6/docs/api/java/io/File.html

There is no better way I know of. Bash knows only status codes (integers) and strings written to the stdout.

As I know, there is no direct support, but you can use plain-ol' javascript for that:

// Cookies
function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";               

    document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name, "", -1);
}

You can use the Session object

import requests
headers = {'User-Agent': 'Mozilla/5.0'}
payload = {'username':'niceusername','password':'123456'}

session = requests.Session()
session.post('https://admin.example.com/login.php',headers=headers,data=payload)
# the session instance holds the cookie. So use it to get/post later.
# e.g. session.get('https://example.com/profile')

For me the highest rated answer didn't work.

What did work was to go to Signing and Capabilities -> Team -> add account and add the Apple ID again.

After doing this, when I built again I was asked for my login credentials and the build succeeded.

I am storing a class object into a string using toString() method. Now, I want to convert the string into that class object.

Your question is ambiguous. It could mean at least two different things, one of which is ... well ... a serious misconception on your part.

If you did this:

SomeClass object = ...
String s = object.toString();

then the answer is that there is no simple way to turn s back into an instance of SomeClass. You couldn't do it even if the toString() method gave you one of those funky "SomeClass@xxxxxxxx" strings. (That string does not encode the state of the object, or even a reference to the object. The xxxxxxxx part is the object's identity hashcode. It is not unique, and cannot be magically turned back into a reference to the object.)

The only way you could turn the output of toString back into an object would be to:

• code the SomeClass.toString() method so that included all relevant state for the object in the String it produced, and
• code a constructor or factory method that explicitly parsed a String in the format produced by the toString() method.

This is probably a bad approach. Certainly, it is a lot of work to do this for non-trivial classes.

If you did something like this:

SomeClass object = ...
Class c = object.getClass();
String cn = c.toString();

then you could get the same Class object back (i.e. the one that is in c) as follows:

Class c2 = Class.forName(cn);

This gives you the Class but there is no magic way to reconstruct the original instance using it. (Obviously, the name of the class does not contain the state of the object.)

If you are looking for a way to serialize / deserialize an arbitrary object without going to the effort of coding the unparse / parse methods yourself, then you shouldn't be using toString() method at all. Here are some alternatives that you can use:

• The Java Object Serialization APIs as described in the links in @Nishant's answer.
• JSON serialization as described in @fatnjazzy's answer.
• An XML serialization library like XStream.
• An ORM mapping.

Each of these approaches has advantages and disadvantages ... which I won't go into here.

I was getting this problem because of Encoding problems. To fix, you can (using eclipse 3.6. STS)

• Right click on the Project, select properties, choose "Resource" (first option on my properties screen)
• Under "Text file encoding" choose Other->UTF-8
• Click the "Apply" Button and continue with Ok.

Project->Clean

Project->Run

.apk loads fine.

return $this->output
            ->set_content_type('application/json')
            ->set_status_header(500)
            ->set_output(json_encode(array(
                    'text' => 'Error 500',
                    'type' => 'danger'
            )));

json_decode will return the same array that was originally encoded. For instanse, if you

$array = json_decode($json, true);
echo $array['countryId'];

OR

$obj= json_decode($json);

echo $obj->countryId;

These both will echo 84. I think json_encode and json_decode function names are self-explanatory...

Quick update to mid 2015:

You can use the Postgres Foreign Data interface, to store the files in more suitable database. For example put the files in a GridFS which is part of MongoDB. Then use https://github.com/EnterpriseDB/mongo_fdw to access it in Postgres.

That has the advantages, that you can access/read/write/backup it in Postrgres and MongoDB, depending on what gives you more flexiblity.

There are also foreign data wrappers for file systems: https://wiki.postgresql.org/wiki/Foreign_data_wrappers#File_Wrappers

As an example you can use this one: https://multicorn.readthedocs.org/en/latest/foreign-data-wrappers/fsfdw.html (see here for brief usage example)

That gives you the advantage of the consistency (all linked files are definitely there) and all the other ACIDs, while there are still on the actual file system, which means you can use any file system you want and the webserver can serve them directly (OS caching applies too).

psql does this, and if you start psql with:

psql -E

it will show you exactly what query is executed. In the case of finding foreign keys, it's:

SELECT conname,
  pg_catalog.pg_get_constraintdef(r.oid, true) as condef
FROM pg_catalog.pg_constraint r
WHERE r.conrelid = '16485' AND r.contype = 'f' ORDER BY 1

In this case, 16485 is the oid of the table I'm looking at - you can get that one by just casting your tablename to regclass like:

WHERE r.conrelid = 'mytable'::regclass

Schema-qualify the table name if it's not unique (or the first in your search_path):

WHERE r.conrelid = 'myschema.mytable'::regclass

If you have Device Owner (or profile owner, I haven't tried) permission you can silently install/uninstall packages using device owner API.

for uninstalling:

public boolean uninstallPackage(Context context, String packageName) {
    ComponentName name = new ComponentName(MyAppName, MyDeviceAdminReceiver.class.getCanonicalName());
    PackageManager packageManger = context.getPackageManager();
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
        PackageInstaller packageInstaller = packageManger.getPackageInstaller();
        PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(
                PackageInstaller.SessionParams.MODE_FULL_INSTALL);
        params.setAppPackageName(packageName);
        int sessionId = 0;
        try {
            sessionId = packageInstaller.createSession(params);
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
        packageInstaller.uninstall(packageName, PendingIntent.getBroadcast(context, sessionId,
                new Intent("android.intent.action.MAIN"), 0).getIntentSender());
        return true;
    }
    System.err.println("old sdk");
    return false;
}

and to install package:

public boolean installPackage(Context context,
                                     String packageName, String packagePath) {
    ComponentName name = new ComponentName(MyAppName, MyDeviceAdminReceiver.class.getCanonicalName());
    PackageManager packageManger = context.getPackageManager();
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
        PackageInstaller packageInstaller = packageManger.getPackageInstaller();
        PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(
                PackageInstaller.SessionParams.MODE_FULL_INSTALL);
        params.setAppPackageName(packageName);
        try {
            int sessionId = packageInstaller.createSession(params);
            PackageInstaller.Session session = packageInstaller.openSession(sessionId);
            OutputStream out = session.openWrite(packageName + ".apk", 0, -1);
            readTo(packagePath, out); //read the apk content and write it to out
            session.fsync(out);
            out.close();
            System.out.println("installing...");
            session.commit(PendingIntent.getBroadcast(context, sessionId,
                    new Intent("android.intent.action.MAIN"), 0).getIntentSender());
            System.out.println("install request sent");
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }
    System.err.println("old sdk");
    return false;
}

This is caused by the limited support for the MP4 format within the video tag in Firefox. Support was not added until Firefox 21, and it is still limited to Windows 7 and above. The main reason for the limited support revolves around the royalty fee attached to the mp4 format.

Check out Supported media formats and Media formats supported by the audio and video elements directly from the Mozilla crew or the following blog post for more information:

http://pauljacobson.org/2010/01/22/2010122firefox-and-its-limited-html-5-video-support-html/

You Can Use This One

="Line 1" & "<br>" & "Line 2"

I know this thread is very old but for those not using SQL Server 2012 or above or cannot use the FORMAT function for any reason then the following works.

Also, a lot of the solutions did not work if the number was less than 1 (e.g. 0.01230000).

Please note that the following does not work with negative numbers.

DECLARE @num decimal(28,14) = 10.012345000
SELECT PARSENAME(@num,2) + REPLACE(RTRIM(LTRIM(REPLACE(@num-PARSENAME(@num,2),'0',' '))),' ','0') 

set @num = 0.0123450000
SELECT PARSENAME(@num,2) + REPLACE(RTRIM(LTRIM(REPLACE(@num-PARSENAME(@num,2),'0',' '))),' ','0') 

Returns 10.012345 and 0.012345 respectively.

I have tried this code and It's working fine in my case.

DELETE FROM NG_USR_0_CLIENT_GRID_NEW WHERE rowid IN
( SELECT rowid FROM
  (
      SELECT wi_name, relationship, ROW_NUMBER() OVER (ORDER BY rowid DESC) RN
      FROM NG_USR_0_CLIENT_GRID_NEW
      WHERE wi_name = 'NB-0000001385-Process'
  )
  WHERE RN=2
);

There is still no solution that preserves newlines.

This is not true - you're probably just being misled by the behaviour of echo:

echo $VAR # strips newlines

echo "$VAR" # preserves newlines

Have a look at using something like

Enum.TryParse

Converts the string representation of the name or numeric value of one or more enumerated constants to an equivalent enumerated object. A parameter specifies whether the operation is case-sensitive. The return value indicates whether the conversion succeeded.

or

Enum.Parse

Converts the string representation of the name or numeric value of one or more enumerated constants to an equivalent enumerated object.

Simply change your code to use the overloaded version of GetMethod that accepts BindingFlags:

MethodInfo dynMethod = this.GetType().GetMethod("Draw_" + itemType, 
    BindingFlags.NonPublic | BindingFlags.Instance);
dynMethod.Invoke(this, new object[] { methodParams });

Here's the BindingFlags enumeration documentation.

This is a very common case in DataTables when it's not able to find the request field define in DataTable configuration.
For Example:

                "aoColumns": [{
                    mData: 'mobile', sWidth: "149px;"
               }, {
                    mData: 'name', sWidth: "121px;"
               }, {
                    mData: 'productName', sWidth: "116px;"
                            }
            }];

Here, If DataTable doesn't receive above mentioned properties. It'll generate this warning:

DataTables warning: Requested unknown parameter '0' from the data source for row '0'

To overcome this you just need to simply set a default value in "aoColumns"

For Example:

  "aoColumns": [{
                mData: 'mobile',sDefaultContent :  '',sWidth: "149px;"
           }, {
                mData: 'name',sDefaultContent :  '', sWidth: "121px;"
           }, {
                mData: 'productName',sDefaultContent :  '', sWidth: "116px;"
              }
        }];

sDefaultContent will supress the warning.
Note: This property could be changed based on version of dataTables you are using.

This is an update to this rather old question. I wanted to use the new SF Pro fonts on a website and found no fonts CDN, besides the above noted (applesocial.s3.amazonaws.com).

Clearly, this isn't an official content repository approved by Apple. Actually, I did not find ANY official fonts repository serving Apple fonts, ready to be used by web developers.

And there's a reason - if you read the license agreement that comes with downloading the new SF Pro and other fonts from https://developer.apple.com/fonts/ - it states in the first few paragraphs very clearly:

[...]you may use the Apple Font solely for creating mock-ups of user interfaces to be used in software products running on Apple’s iOS, macOS or tvOS operating systems, as applicable. The foregoing right includes the right to show the Apple Font in screen shots, images, mock-ups or other depictions, digital and/or print, of such software products running solely on iOS, macOS or tvOS.[...]

And:

Except as expressly provided for herein, you may not use the Apple Font to, create, develop, display or otherwise distribute any documentation, artwork, website content or any other work product.

Further:

Except as otherwise expressly permitted [...] (i) only one user may use the Apple Font at a time, and (ii) you may not make the Apple Font available over a network where it could be run or used by multiple computers at the same time.

No more questions for me. Apple clearly does not want their Fonts shared across the web outside their products.

The precise wording of the question makes me think it's impossible.

return to me means you have a function, which you have passed a string as a parameter.

You cannot change this parameter. Assigning to it will only change the value of the parameter within the function, not the passed in string. E.g.

>>> def removeAndReturnLastCharacter(a):
        c = a[-1]
        a = a[:-1]
        return c

>>> b = "Hello, Gaukler!"
>>> removeAndReturnLastCharacter(b)
!

>>> b    # b has not been changed
Hello, Gaukler!

Use auto margins.

div {
   margin-left: auto;
   margin-right: auto;
   width: NNNpx;

   /* NOTE: Only works for non-floated block elements */
   display: block;
   float: none;
}

Further reading at SimpleBits CSS Centering 101

As mentioned by Quynh Nguyen, you don't need the '.' in the className. However - document.getElementsByClassName('col1') will return an array of objects.

This will return an "undefined" value because an array doesn't have a class. You'll still need to loop through the array elements...

function changeBGColor() {
  var cols = document.getElementsByClassName('col1');
  for(i = 0; i < cols.length; i++) {
    cols[i].style.backgroundColor = 'blue';
  }
}

Also note, that for local mode you have to set the amount of driver memory before starting jvm:

bin/spark-submit --driver-memory 2g --class your.class.here app.jar

This will start the JVM with 2G instead of the default 512M.
Details here:

For local mode you only have one executor, and this executor is your driver, so you need to set the driver's memory instead. *That said, in local mode, by the time you run spark-submit, a JVM has already been launched with the default memory settings, so setting "spark.driver.memory" in your conf won't actually do anything for you. Instead, you need to run spark-submit as follows

sun's JDK/JRE needs a contiguous amount of memory if you allocate a huge block.

The OS and initial apps tend to allocate bits and pieces during loading which fragments the available RAM. If a contiguous block is NOT available, the SUN JDK cannot use it. JRockit from Bea(acquired by Oracle) can allocate memory from pieces.

do this way :

sudo apt purge ruby

An ico can be a png.

More precisely, you can store one or more png inside this minimal container format, instead of the usual bitmap+alpha that everyone strongly associates with ico.

Support is old, appearing in Windows Vista (2007) and is well supported by browsers, though not necessarily by icon editing software.

Any valid png (whole including header) can be prepended by a 6 byte ico header and 16 byte image directory.
GIMP has native support. Simply export as ico and tick "Compressed (PNG)".

I've found the very simple answer: isAdded():

Return true if the fragment is currently added to its activity.

@Override
protected void onPostExecute(Void result){
    if(isAdded()){
        getResources().getString(R.string.app_name);
    }
}

To avoid onPostExecute from being called when the Fragment is not attached to the Activity is to cancel the AsyncTask when pausing or stopping the Fragment. Then isAdded() would not be necessary anymore. However, it is advisable to keep this check in place.

In my case I needed to load a whole module only when the div existed in the template, meaning the outlet was inside an ngif. This way everytime angular detected the element #geolocalisationOutlet it created the component inside of it. The module only loads once as well.

constructor(
    public wlService: WhitelabelService,
    public lmService: LeftMenuService,
    private loader: NgModuleFactoryLoader,
    private injector: Injector
) {
}

@ViewChild('geolocalisationOutlet', {read: ViewContainerRef}) set geolocalisation(geolocalisationOutlet: ViewContainerRef) {
    const path = 'src/app/components/engine/sections/geolocalisation/geolocalisation.module#GeolocalisationModule';
    this.loader.load(path).then((moduleFactory: NgModuleFactory<any>) => {
        const moduleRef = moduleFactory.create(this.injector);
        const compFactory = moduleRef.componentFactoryResolver
            .resolveComponentFactory(GeolocalisationComponent);
        if (geolocalisationOutlet && geolocalisationOutlet.length === 0) {
            geolocalisationOutlet.createComponent(compFactory);
        }
    });
}

<div *ngIf="section === 'geolocalisation'" id="geolocalisation">
     <div #geolocalisationOutlet></div>
</div>

You can use URL encoding to encode the newline as %0A.

mailto:[email protected]?subject=test&body=type%20your%0Amessage%20here

While the above appears to work in many cases, user olibre points out that the RFC governing the mailto URI scheme specifies that %0D%0A (carriage return + line feed) should be used instead of %0A (line feed). See also: Newline Representations.

I use either BloodShed's DEV C++, CygWin, or Visual C++ Express. All of which are free and work well. I have found that for me, DEV C++ worked the best and was the least quirky. Each compiler has it's own quirks and deifferences, you need to try out a few and find the one with which you are most comfortable. I also liked the fact that DEV C++ allowed me to change the fonts that are used in the editor. I like Proggy Programming fonts!

volatile keyword guarantees happens-before relationship among threads sharing that variable. It doesn't guarantee you that 2 or more threads won't interrupt each other while accessing that boolean variable.

Yes it is possible

You can do this using only HTML You need to set default select option disabled="" and selected="" and select tag required="". Browser doesn't allow user to submit the form without selecting an option.

<form action="" method="POST">
    <select name="in-op" required="">
        <option disabled="" selected="">Select Option</option>
        <option>Option 1</option>
        <option>Option 2</option>
        <option>Option 3</option>
    </select>
    <input type="submit" value="Submit">
</form>

If you're using Vim, see :h retab.

                                                        *:ret* *:retab*
:[range]ret[ab][!] [new_tabstop]
                        Replace all sequences of white-space containing a
                        <Tab> with new strings of white-space using the new
                        tabstop value given.  If you do not specify a new
                        tabstop size or it is zero, Vim uses the current value
                        of 'tabstop'.
                        The current value of 'tabstop' is always used to
                        compute the width of existing tabs.
                        With !, Vim also replaces strings of only normal
                        spaces with tabs where appropriate.
                        With 'expandtab' on, Vim replaces all tabs with the
                        appropriate number of spaces.
                        This command sets 'tabstop' to the new value given,
                        and if performed on the whole file, which is default,
                        should not make any visible change.
                        Careful: This command modifies any <Tab> characters
                        inside of strings in a C program.  Use "\t" to avoid
                        this (that's a good habit anyway).
                        ":retab!" may also change a sequence of spaces by
                        <Tab> characters, which can mess up a printf().
                        {not in Vi}
                        Not available when |+ex_extra| feature was disabled at
                        compile time.

For example, if you simply type

:ret

all your tabs will be expanded into spaces.

You may want to

:se et  " shorthand for :set expandtab

to make sure that any new lines will not use literal tabs.

If you're not using Vim,

perl -i.bak -pe "s/\t/' 'x(8-pos()%8)/eg" file.py

will replace tabs with spaces, assuming tab stops every 8 characters, in file.py (with the original going to file.py.bak, just in case). Replace the 8s with 4s if your tab stops are every 4 spaces instead.

As an ArrayList that line would be

import java.util.ArrayList;
...
ArrayList<Card> hand = new ArrayList<Card>();

To use the ArrayList you have do

hand.get(i); //gets the element at position i 
hand.add(obj); //adds the obj to the end of the list
hand.remove(i); //removes the element at position i
hand.add(i, obj); //adds the obj at the specified index
hand.set(i, obj); //overwrites the object at i with the new obj

Also read this http://docs.oracle.com/javase/6/docs/api/java/util/ArrayList.html

You should use & / | operators and be careful about operator precedence (== has lower precedence than bitwise AND and OR):

df1 = sqlContext.createDataFrame(
    [(1, "a", 2.0), (2, "b", 3.0), (3, "c", 3.0)],
    ("x1", "x2", "x3"))

df2 = sqlContext.createDataFrame(
    [(1, "f", -1.0), (2, "b", 0.0)], ("x1", "x2", "x3"))

df = df1.join(df2, (df1.x1 == df2.x1) & (df1.x2 == df2.x2))
df.show()

## +---+---+---+---+---+---+
## | x1| x2| x3| x1| x2| x3|
## +---+---+---+---+---+---+
## |  2|  b|3.0|  2|  b|0.0|
## +---+---+---+---+---+---+

One possibility you can try is to create 3 axes stacked one on top of the other with the 'Color' properties of the top two set to 'none' so that all the plots are visible. You would have to adjust the axes width, position, and x-axis limits so that the 3 y axes are side-by-side instead of on top of one another. You would also want to remove the x-axis tick marks and labels from 2 of the axes since they will lie on top of one another.

Here's a general implementation that computes the proper positions for the axes and offsets for the x-axis limits to keep the plots lined up properly:

%# Some sample data:
x = 0:20;
N = numel(x);
y1 = rand(1,N);
y2 = 5.*rand(1,N)+5;
y3 = 50.*rand(1,N)-50;

%# Some initial computations:
axesPosition = [110 40 200 200];  %# Axes position, in pixels
yWidth = 30;                      %# y axes spacing, in pixels
xLimit = [min(x) max(x)];         %# Range of x values
xOffset = -yWidth*diff(xLimit)/axesPosition(3);

%# Create the figure and axes:
figure('Units','pixels','Position',[200 200 330 260]);
h1 = axes('Units','pixels','Position',axesPosition,...
          'Color','w','XColor','k','YColor','r',...
          'XLim',xLimit,'YLim',[0 1],'NextPlot','add');
h2 = axes('Units','pixels','Position',axesPosition+yWidth.*[-1 0 1 0],...
          'Color','none','XColor','k','YColor','m',...
          'XLim',xLimit+[xOffset 0],'YLim',[0 10],...
          'XTick',[],'XTickLabel',[],'NextPlot','add');
h3 = axes('Units','pixels','Position',axesPosition+yWidth.*[-2 0 2 0],...
          'Color','none','XColor','k','YColor','b',...
          'XLim',xLimit+[2*xOffset 0],'YLim',[-50 50],...
          'XTick',[],'XTickLabel',[],'NextPlot','add');
xlabel(h1,'time');
ylabel(h3,'values');

%# Plot the data:
plot(h1,x,y1,'r');
plot(h2,x,y2,'m');
plot(h3,x,y3,'b');

and here's the resulting figure:

Think, the dataset is "data" and name your dataset as " data_fr " and number of rows in the data_fr is "nu_rows"

#import the data frame. Extention could be different as csv,xlsx or etc.
data_fr = pd.read_csv('data.csv')

#print the number of rows
nu_rows = data_fr.shape[0]
print(nu_rows)

String s1 = "Welcome"; // Does not create a new instance  
String s2 = new String("Welcome"); // Creates two objects and one reference variable  

From the standard

7.5.2 Element identifiers: the id and class attributes

Attribute definitions

id = name [CS]
This attribute assigns a name to an element. This name must be unique in a document.

class = cdata-list [CS]
This attribute assigns a class name or set of class names to an element. Any number of elements may be assigned the same class name or names. Multiple class names must be separated by white space characters.

Yes, just put a space between them.

<article class="column wrapper">

Of course, there are many things you can do with CSS inheritance. Here is an article for further reading.

BFS for a binary (or n-ary) tree can be done recursively without queues as follows (here in Java):

public class BreathFirst {

    static class Node {
        Node(int value) {
            this(value, 0);
        }
        Node(int value, int nChildren) {
            this.value = value;
            this.children = new Node[nChildren];
        }
        int value;
        Node[] children;
    }

    static void breathFirst(Node root, Consumer<? super Node> printer) {
        boolean keepGoing = true;
        for (int level = 0; keepGoing; level++) {
            keepGoing = breathFirst(root, printer, level);
        }
    }

    static boolean breathFirst(Node node, Consumer<? super Node> printer, int depth) {
        if (depth < 0 || node == null) return false;
        if (depth == 0) {
            printer.accept(node);
            return true;
        }
        boolean any = false;
        for (final Node child : node.children) {
            any |= breathFirst(child, printer, depth - 1);
        }
        return any;
    }
}

An example traversal printing numbers 1-12 in ascending order:

public static void main(String... args) {
    //            1
    //          / | \
    //        2   3   4
    //      / |       | \
    //    5   6       7  8
    //  / |           | \
    // 9  10         11  12

    Node root = new Node(1, 3);
    root.children[0] = new Node(2, 2);
    root.children[1] = new Node(3);
    root.children[2] = new Node(4, 2);
    root.children[0].children[0] = new Node(5, 2);
    root.children[0].children[1] = new Node(6);
    root.children[2].children[0] = new Node(7, 2);
    root.children[2].children[1] = new Node(8);
    root.children[0].children[0].children[0] = new Node(9);
    root.children[0].children[0].children[1] = new Node(10);
    root.children[2].children[0].children[0] = new Node(11);
    root.children[2].children[0].children[1] = new Node(12);

    breathFirst(root, n -> System.out.println(n.value));
}

Under Visual Studio 2008, it defaults to an __int64 unless you define _USE_32BIT_TIME_T. You're better off just pretending that you don't know what it's defined as, since it can (and will) change from platform to platform.

Prefix the call with Module2 (ex. Module2.IDLE). I'm assuming since you asked this that you have IDLE defined multiple times in the project, otherwise this shouldn't be necessary.

I found it's better to set the width and height to 0px. Otherwise, IE10 ignores the padding defined on the field -- padding-right -- which was intended to keep the text from typing over the 'X' icon that I overlayed on the input field. I'm guessing that IE10 is internally applying the padding-right of the input to the ::--ms-clear pseudo element, and hiding the pseudo element does not restore the padding-right value to the input.

This worked better for me:

.someinput::-ms-clear {
  width : 0;
  height: 0;
}

You can't modify the default dialogue for onbeforeunload, so your best bet may be to work with it.

window.onbeforeunload = function() {
    return 'You have unsaved changes!';
}

Here's a reference to this from Microsoft:

When a string is assigned to the returnValue property of window.event, a dialog box appears that gives users the option to stay on the current page and retain the string that was assigned to it. The default statement that appears in the dialog box, "Are you sure you want to navigate away from this page? ... Press OK to continue, or Cancel to stay on the current page.", cannot be removed or altered.

The problem seems to be:

1. When onbeforeunload is called, it will take the return value of the handler as window.event.returnValue.
2. It will then parse the return value as a string (unless it is null).
3. Since false is parsed as a string, the dialogue box will fire, which will then pass an appropriate true/false.

The result is, there doesn't seem to be a way of assigning false to onbeforeunload to prevent it from the default dialogue.

Additional notes on jQuery:

• Setting the event in jQuery may be problematic, as that allows other onbeforeunload events to occur as well. If you wish only for your unload event to occur I'd stick to plain ol' JavaScript for it.

• jQuery doesn't have a shortcut for onbeforeunload so you'd have to use the generic bind syntax.

  $(window).bind('beforeunload', function() {} );
  

Edit 09/04/2018: custom messages in onbeforeunload dialogs are deprecated since chrome-51 (cf: release note)

Take a look at jfxmessagebox (http://en.sourceforge.jp/projects/jfxmessagebox/) if you are looking for very simple dialog popups.

var fd = new FormData();
var file_data = $('input[type="file"]')[0].files; // for multiple files
for(var i = 0;i<file_data.length;i++){
    fd.append("file_"+i, file_data[i]);
}
var other_data = $('form').serializeArray();
$.each(other_data,function(key,input){
    fd.append(input.name,input.value);
});
$.ajax({
    url: 'test.php',
    data: fd,
    contentType: false,
    processData: false,
    type: 'POST',
    success: function(data){
        console.log(data);
    }
});

Added a for loop and changed .serialize() to .serializeArray() for object reference in a .each() to append to the FormData.

Try this code with a Turkish currency compliant JavaScript

function dene() {
         var inpt = document.getElementById("tar1").value;
         var spt = inpt.split('');
         spt.reverse();

         var tek = ["", "Bir", "Iki", "Üç", "Dört", "Bes", "Alti", "Yedi", "Sekiz", "Dokuz"];
         var onlu = ["", "On", "Yirmi", "Otuz", "Kirk", "Elli", "Atmis", "Yetmis", "Seksen", "Doksan"];
         var Yuz = ["", "Yüz", "IkiYüz", "Üçyüz", "DörtYüz", "BesYüz", "AltiYüz", "YediYüz", "SekizYüz", "DokuzYüz"];
         var ska = ["", "", "", "", "Bin", "Milyon", "Milyar", "Trilyon", "Katrilyon", "Kentilyon"];
         var i, j;
         var bas3 = "";
         var bas6 = "";
         var bas9 = "";
         var bas12 = "";
         var total;

               for(i = 0; i < 1; i++) {

                      bas3 += Yuz[spt[i+2]] + onlu[spt[i+1]] + tek[spt[i]];
                      bas6 += Yuz[spt[i+5]] + onlu[spt[i+4]] + tek[spt[i+3]] + ska[4];
                      bas9 += Yuz[spt[i+8]] + onlu[spt[i+7]] + tek[spt[i+6]] + ska[5];
                      bas12 += Yuz[spt[i+11]] + onlu[spt[i+10]] + tek[spt[i+9]] + ska[6];


                   if(inpt.length < 4) {
                       bas6 = '';
                       bas9 = '';
                   }
                   if(inpt.length > 6 && inpt.slice(5, 6) == 0) {
                     bas6 = bas6.replace(/Bin/g, '');
                   }
                   if(inpt.length < 7) {
                       bas9 = '';
                   } 
                   if(inpt.length > 9 && inpt.slice(1,3) == 000){
                       bas9 = bas9.replace(/Milyon/g, '');
                   }

                   if(inpt.length < 10) {
                    bas12 = '';
                 }
             }

         total = bas12 + bas9 + bas6 + bas3;
         total = total.replace(NaN, '');
         total = total.replace(undefined, '');

        document.getElementById('demo').innerHTML = 
            total;


     }

You could also use operator.concat() like this:

>>> from operator import concat
>>> a = ['a', 'b', 'c', 'd']
>>> reduce(concat, a)
'abcd'

If you're using Python 3 you need to prepend:

>>> from functools import reduce

since the builtin reduce() has been removed from Python 3 and now lives in functools.reduce().

I know this very old but for future's sake:

I also used a dynamic dns provider. Wanted to test the website (IIS) BEHIND my (home) router. So i thought i use something like this:

my.dynamic.dnss.ip:8080 (because my router's port 80 was used to admin it).

So this seemed to be the only solution.
But: Paypal seemed to not like port 8080: only port 80 and 443 are allowed (don't know why!!)

I had the same problem because .htaccess has incorrect settings:

RewriteEngine on
RewriteRule !.(js|gif|jpg|png|css)$ index.php

I solved this by modifying the file:

RewriteEngine on
RewriteRule !.(js|gif|jpg|png|css|eot|svg|ttf|woff|woff2|map)$ index.php

What I've done in this case is, in the primary jframe that I want to keep visible (for example, a menu frame), I deselect the option focusableWindowState in the property window so It will be FALSE. Once that is done, the jframes I call don´t lose focus until I close them.

When using the header function, php does not trigger a close on the current session. You must use session_write_close to close the session and remove the file lock from the session file.

ob_start();
@session_start();

//some display stuff

$_SESSION['id'] = $id; //$id has a value
session_write_close();
header('location: test.php');

1. fs.readdir(path, callback)
2. fs.rename(old,new,callback)

Go through http://nodejs.org/api/fs.html

One important thing - you can use sync functions also. (It will work like C program)

In XSLT the same <xsl:variable> can be declared only once and can be given a value only at its declaration. If more than one variables are declared at the same time, they are in fact different variables and have different scope.

Therefore, the way to achieve the wanted conditional setting of the variable and producing its value is the following:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes"/>

    <xsl:template match="class">
    <xsl:variable name="subexists">
            <xsl:choose>
                <xsl:when test="joined-subclass">true</xsl:when>
                <xsl:otherwise>false</xsl:otherwise>
            </xsl:choose>
        </xsl:variable>
        subexists:  <xsl:text/>    
        <xsl:value-of select="$subexists" />
    </xsl:template>
</xsl:stylesheet>

When the above transformation is applied on the following XML document:

<class>
 <joined-subclass/>
</class>

the wanted result is produced:

    subexists:  true