Here's my version, IMO it's easy to understand and elegant too.

var str = "foo bar baz"_x000D_
_x000D_
console.log(_x000D_
_x000D_
str.split(' ')_x000D_
   .map(w => w[0].toUpperCase() + w.substr(1).toLowerCase())_x000D_
   .join(' ')_x000D_
_x000D_
)_x000D_
// returns "Foo Bar Baz"

If I Understood correctly you need to view the .db file that you extracted from internal storage of Emulator. If that's the case use this

http://sourceforge.net/projects/sqlitebrowser/

to view the db.

You can also use a firefox extension

https://addons.mozilla.org/en-us/firefox/addon/sqlite-manager/

EDIT: For online tool use : https://sqliteonline.com/

Best way to do this is to make it check against an IP address that python always gives if it can't find the website. In this case this is my code:

import socket

print("website connection checker")
while True:
    website = input("please input website: ")
    print("")
    print(socket.gethostbyname(website))
    if socket.gethostbyname(website) == "92.242.140.2":
        print("Website could be experiencing an issue/Doesn't exist")
    else:
        socket.gethostbyname(website)
        print("Website is operational!")
        print("")

Just to be sure that this is really the "conversion" you need, please note that jks files are keystores, a file format used to store more than one certificate and allows you to retrieve them programmatically using the Java security API, it's not a one-to-one conversion between equivalent formats.

So, if you just want to import that certificate in a new ad-hoc keystore you can do it with Keystore Explorer, a graphical tool. You'll be able to modify the keystore and the certificates contained therein like you would have done with the java terminal utilities like keytool (but in a more accessible way).

That's an old thread, but in case you want to upload the image having same extension-

    $image = $request->image;
    $imageInfo = explode(";base64,", $image);
    $imgExt = str_replace('data:image/', '', $imageInfo[0]);      
    $image = str_replace(' ', '+', $imageInfo[1]);
    $imageName = "post-".time().".".$imgExt;
    Storage::disk('public_feeds')->put($imageName, base64_decode($image));

You can create 'public_feeds' in laravel's filesystem.php-

   'public_feeds' => [
        'driver' => 'local',
        'root'   => public_path() . '/uploads/feeds',
    ],

An alternative approach to those described above would be to create an external agent using java.lang.instrument to find out what classes are loaded and run your program with the -javaagent switch:

import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;

public class SimpleTransformer implements ClassFileTransformer {

    public SimpleTransformer() {
        super();
    }

    public byte[] transform(ClassLoader loader, String className, Class redefiningClass, ProtectionDomain domain, byte[] bytes) throws IllegalClassFormatException {
        System.out.println("Loading class: " + className);
        return bytes;
    }
}

This approach has the added benefit of providing you with information about which ClassLoader loaded a given class.

As Maciej Jonczyk mentioned, you may also need to increase margins

par(las=2)
par(mar=c(8,8,1,1)) # adjust as needed
plot(...)

You can use ngHide (or ngShow) directive. It doesn't create child scope as ngIf does.

<div ng-hide="testa">

If all fails, simply put the DLL in the windows\system32 folder . The compiler will find it. Specify the DLL to load from with: DllImport("user32.dll"..., set EntryPoint = "my_unmanaged_function" to import your desired unmanaged function to your C# app:

 using System;
using System.Runtime.InteropServices;

class Example
{
   // Use DllImport to import the Win32 MessageBox function.

   [DllImport ("user32.dll", CharSet = CharSet.Auto)]
   public static extern int MessageBox 
      (IntPtr hWnd, String text, String caption, uint type);

   static void Main()
   {
      // Call the MessageBox function using platform invoke.
      MessageBox (new IntPtr(0), "Hello, World!", "Hello Dialog", 0);    
   }
}

Source and even more DllImport examples : http://msdn.microsoft.com/en-us/library/aa288468(v=vs.71).aspx

UAParser is one of the lightweight JavaScript Library to identify browser, engine, OS, CPU, and device type/model from userAgent string.

There's an CDN available. Here, I have included a example code to detect browser using UAParser.

<!doctype html>
<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/ua-parser-js@0/dist/ua-parser.min.js"></script>
<script type="text/javascript">
    var parser = new UAParser();
    var result = parser.getResult();
    console.log(result.browser);     // {name: "Chromium", version: "15.0.874.106"}
</script>
</head>
<body>
</body>
</html>

Now you can use the value of result.browser to conditionally program your page.

Source Tutorial: How to detect browser, engine, OS, CPU, and device using JavaScript?

And now there is readxl:

The readxl package makes it easy to get data out of Excel and into R. Compared to the existing packages (e.g. gdata, xlsx, xlsReadWrite etc) readxl has no external dependencies so it's easy to install and use on all operating systems. It is designed to work with tabular data stored in a single sheet.

readxl is built on top of the libxls C library, which abstracts away many of the complexities of the underlying binary format.

It supports both the legacy .xls format and .xlsx

readxl is available from CRAN, or you can install it from github with:

# install.packages("devtools")
devtools::install_github("hadley/readxl")

Usage

library(readxl)

# read_excel reads both xls and xlsx files
read_excel("my-old-spreadsheet.xls")
read_excel("my-new-spreadsheet.xlsx")

# Specify sheet with a number or name
read_excel("my-spreadsheet.xls", sheet = "data")
read_excel("my-spreadsheet.xls", sheet = 2)

# If NAs are represented by something other than blank cells,
# set the na argument
read_excel("my-spreadsheet.xls", na = "NA")

Note that while the description says 'no external dependencies', it does require the Rcpp package, which in turn requires Rtools (for Windows) or Xcode (for OSX), which are dependencies external to R. Though many people have them installed for other reasons.

Your problem is unrelated to how you have set border-radius. Fire up Chrome and hit Ctrl+Shift+j and inspect the element. Uncheck width and the border will have curved corners.

I will expand on @User's generic solution to provide a drop free alternative. This is for folks directed here based on the question's title (not OP 's problem)

Say you want to delete all rows with negative values. One liner solution is:-

df = df[(df > 0).all(axis=1)]

Step by step Explanation:--

Let's generate a 5x5 random normal distribution data frame

np.random.seed(0)
df = pd.DataFrame(np.random.randn(5,5), columns=list('ABCDE'))
      A         B         C         D         E
0  1.764052  0.400157  0.978738  2.240893  1.867558
1 -0.977278  0.950088 -0.151357 -0.103219  0.410599
2  0.144044  1.454274  0.761038  0.121675  0.443863
3  0.333674  1.494079 -0.205158  0.313068 -0.854096
4 -2.552990  0.653619  0.864436 -0.742165  2.269755

Let the condition be deleting negatives. A boolean df satisfying the condition:-

df > 0
      A     B      C      D      E
0   True  True   True   True   True
1  False  True  False  False   True
2   True  True   True   True   True
3   True  True  False   True  False
4  False  True   True  False   True

A boolean series for all rows satisfying the condition Note if any element in the row fails the condition the row is marked false

(df > 0).all(axis=1)
0     True
1    False
2     True
3    False
4    False
dtype: bool

Finally filter out rows from data frame based on the condition

df[(df > 0).all(axis=1)]
      A         B         C         D         E
0  1.764052  0.400157  0.978738  2.240893  1.867558
2  0.144044  1.454274  0.761038  0.121675  0.443863

You can assign it back to df to actually delete vs filter ing done above
df = df[(df > 0).all(axis=1)]

This can easily be extended to filter out rows containing NaN s (non numeric entries):-
df = df[(~df.isnull()).all(axis=1)]

This can also be simplified for cases like: Delete all rows where column E is negative

df = df[(df.E>0)]

I would like to end with some profiling stats on why @User's drop solution is slower than raw column based filtration:-

%timeit df_new = df[(df.E>0)]
345 µs ± 10.5 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
%timeit dft.drop(dft[dft.E < 0].index, inplace=True)
890 µs ± 94.9 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)

A column is basically a Series i.e a NumPy array, it can be indexed without any cost. For folks interested in how the underlying memory organization plays into execution speed here is a great Link on Speeding up Pandas:

I was running into the same issue when my callbacks would try to show a dialog.

I solved it with dedicated methods in the Activity - at the Activity instance member level - that use runOnUiThread(..)

public void showAuthProgressDialog() {
    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            mAuthProgressDialog = DialogUtil.getVisibleProgressDialog(SignInActivity.this, "Loading ...");
        }
    });
}

public void dismissAuthProgressDialog() {
    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            if (mAuthProgressDialog == null || ! mAuthProgressDialog.isShowing()) {
                return;
            }
            mAuthProgressDialog.dismiss();
        }
    });
}

Start your OnClickListener, but when you get to the first set up parenthesis, type new, then View, and press enter. Should look like this when you're done:

Button btn1 = (Button)findViewById(R.id.button1);

btn1.setOnClickListener(new View.OnClickListener() {            
    @Override
    public void onClick(View v) {
//your stuff here.
    }
});

In my case running Yosemite in VMWare Workstation 10.0.5 I had to:

1) Set kext to dev mode (might not be needed anymore .... try first without it)

sudo nvram boot-args="kext-dev-mode=1" 

Then reboot (power down VM) for step 2) below.

Details here: http://www.csell.net/2014/09/03/VTNX_Not_Enabled/

2) Add vhv.enable = "TRUE" to my VMX file and restart the VM

Details discussed here: https://communities.vmware.com/thread/416997?start=15&tstart=0

3) Install HAXM 1.1.1 as discussed above from the Intel 's site

(would love to post more links -> but have limit for 2 -> so vote for me so next time you will gert more .. :-))

Lazy

from itertools import tee

def is_sorted(l):
    l1, l2 = tee(l)
    next(l2, None)
    return all(a <= b for a, b in zip(l1, l2))

The reason for this error occurs is that you are using the CryptoListPresenter _presenter without initializing.

I found that CryptoListPresenter _presenter would have to be initialized to fix because _presenter.loadCurrencies() is passing through a null variable at the time of instantiation;

there are two ways to initialize

1. Can be initialized during an declaration, like this

   CryptoListPresenter _presenter = CryptoListPresenter();
   

2. In the second, initializing(with assigning some value) it when initState is called, which the framework will call this method once for each state object.

   @override
   void initState() {
     _presenter = CryptoListPresenter(...);
   }
   

You must have the definition of class B before you use the class. How else would the compiler otherwise know that there exists such a function as B::add?

Either define class B before class A, or move the body of A::doSomething to after class B have been defined, like

class B;

class A
{
    B* b;

    void doSomething();
};

class B
{
    A* a;

    void add() {}
};

void A::doSomething()
{
    b->add();
}

PHP parser will search your entire code for <?php (or <? if short_open_tag = On), so HTML comment tags have no effect on PHP parser behavior & if you don't want to parse your PHP code, you have to use PHP commenting directives(/* */ or //).

The best way I found so far is using the Android-Debug-Database tool.

Its incredibly simple to use and setup, just add the dependence and connect to the device database's interface via web. No need to root the phone or adding activities or whatsoever. Here are the steps:

STEP 1

Add the following dependency to your app's Gradle file and run the application.

debugCompile 'com.amitshekhar.android:debug-db:1.0.0'

STEP 2

Open your browser and visit your phone's IP address on port 8080. The URL should be like: http://YOUR_PHONE_IP_ADDRESS:8080. You will be presented with the following:

NOTE: You can also always get the debug address URL from your code by calling the method DebugDB.getAddressLog();

To get my phone's IP I currently use Ping Tools, but there are a lot of alternatives.

STEP 3

That's it!

More details in the official documentation: https://github.com/amitshekhariitbhu/Android-Debug-Database

You have to declare the array variable as an array:

Dim test(10) As Variant

Just another solution

$('.checkbox_class').on('change', function(){ // on change of state
   if(this.checked) // if changed state is "CHECKED"
    {
        // do the magic here
    }
})

var values = {};
$('td input').each(function(){
  values[$(this).attr('name')] = $(this).val();
}

Haven't tested, but that should do it...

For whatever reason I've never liked the clearing approaches, I rely on floats and percentage widths for things like this.

Here's something that works in simple cases:

#content { 
  overflow:auto; 
  width: 600px; 
  background: gray; 
} 

#left, #right { 
  width: 40%; 
  margin:5px; 
  padding: 1em; 
  background: white; 
} 

#left  { float:left;  }
#right { float:right; } 

If you put some content in you'll see that it works:

<div id="content">
  <div id="left">
     <div id="object1">some stuff</div>
     <div id="object2">some more stuff</div>
  </div>

  <div id="right">
     <div id="object3">unas cosas</div>
     <div id="object4">mas cosas para ti</div>
  </div>
</div>

You can see it here: http://cssdesk.com/d64uy

in your view, instead of:

@Html.EditorFor(model => model.Comments[0].Comment)

just use:

@Html.TextAreaFor(model => model.Comments[0].Comment, 5, 1, null)

If you are using Google Play App Signing you need to use the SHA1 from google play since Google will replace your release signing key with the one on googles server

DON'T use (.|[\r\n]) instead of . for multiline matching.

DO use [\s\S] instead of . for multiline matching

Also, avoid greediness where not needed by using *? or +? quantifier instead of * or +. This can have a huge performance impact.

See the benchmark I have made: http://jsperf.com/javascript-multiline-regexp-workarounds

Using [^]: fastest
Using [\s\S]: 0.83% slower
Using (.|\r|\n): 96% slower
Using (.|[\r\n]): 96% slower

NB: You can also use [^] but it is deprecated in the below comment.

Update: This function only avoids copy if it can, hence this is not the correct answer for this question. unutbu's answer is the right one.

a = a.astype(numpy.float32, copy=False)

numpy astype has a copy flag. Why shouldn't we use it ?

Chrome's Javascript console suggested I declare the entire page address in my HTTP referrer list, in this instance http://mywebsite.com/map.htm Even though the exact address is http://www.mywebsite.com/map.htm - I already had wildcard styles listed as suggested by others but this was the only way it would work for me.

Install Flask-SQLAlchemy with pip in your virtualenv:

pip install flask_sqlalchemy

Then import flask_sqlalchemy in your code:

from flask_sqlalchemy import SQLAlchemy

Here we have two possible cases given below

from __future__ import division

print(4/100)
print(4//100)

I had the same problem. At least I could solve it with this:

sudo yum install gcc gcc-c++

Hope it solves your problem too.

With the release of Android Oreo you can use the support library to reach this goal.

1. Check in your app build.gradle if you have the support library >= 26.0.0
2. Add "font" folder to your resources folder and add your fonts there

3. Reference your default font family in your app main style:

   <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
      <item name="android:fontFamily">@font/your_font</item>
      <item name="fontFamily">@font/your_font</item> <!-- target android sdk versions < 26 and > 14 if theme other than AppCompat -->
   </style>
   

Check https://developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html for more detailed information.

{{ app.user.username|default('') }}

Just present login username for example, filter function default('') should be nice when user is NOT login by just avoid annoying error message.

You can use it in a more compact way as:

var tifs = {1: 'Joe', 2: 'Jane'};
...

return (
   <select id="tif" name="tif" onChange={this.handleChange}>  
      { Object.entries(tifs).map((t,k) => <option key={k} value={t[0]}>{t[1]}</option>) }          
   </select>
)

And another slightly different flavour:

 Object.entries(tifs).map(([key,value],i) => <option key={i} value={key}>{value}</option>)  

Wrap the image in a div with dimensions 64x64 and set width: inherit to the image:

<div style="width: 64px; height: 64px;">
    <img src="Runtime path" style="width: inherit" />
</div>

I made my small method to log JsonObject fields, and get some stings. See if it can be usefull.

object JsonParser {

val TAG = "JsonParser"
 /**
 * parse json object
 * @param objJson
 * @return  Map<String, String>
 * @throws JSONException
 */
@Throws(JSONException::class)
fun parseJson(objJson: Any?): Map<String, String> {
    val map = HashMap<String, String>()

    // If obj is a json array
    if (objJson is JSONArray) {
        for (i in 0 until objJson.length()) {
            parseJson(objJson[i])
        }
    } else if (objJson is JSONObject) {
        val it: Iterator<*> = objJson.keys()
        while (it.hasNext()) {
            val key = it.next().toString()
            // If you get an array
            when (val jobject = objJson[key]) {
                is JSONArray -> {
                    Log.e(TAG, " JSONArray: $jobject")
                    parseJson(jobject)
                }
                is JSONObject -> {
                    Log.e(TAG, " JSONObject: $jobject")
                    parseJson(jobject)
                }
                else -> {
                    Log.e(TAG, " adding to map: $key $jobject")
                    map[key] = jobject.toString()
                }
            }
        }
    }
    return map
}
}

It may be that the Windows Credential Manager is holding onto credentials for the network share.

Load up Credential Manager (the easiest way is perhaps just to Search for that in the Start Menu), see if there are any Windows Credentials for your network share, and try deleting/updating them.

I think it is most useful as a compile-time reminder that the intention of the method is to override a parent method. As an example:

protected boolean displaySensitiveInformation() {
  return false;
}

You will often see something like the above method that overrides a method in the base class. This is an important implementation detail of this class -- we don't want sensitive information to be displayed.

Suppose this method is changed in the parent class to

protected boolean displaySensitiveInformation(Context context) {
  return true;
}

This change will not cause any compile time errors or warnings - but it completely changes the intended behavior of the subclass.

To answer your question: you should use the @Override annotation if the lack of a method with the same signature in a superclass is indicative of a bug.

The command chkconfig is no longer available in Ubuntu.The equivalent command to chkconfig is update-rc.d.This command nearly supports all the new versions of ubuntu.

The similar commands are

update-rc.d <service> defaults

update-rc.d <service> start 20 3 4 5

update-rc.d -f <service>  remove

You may use sshfs:

$ sshfs user@ip:/<remote-path> <local-mount-path>
$ docker save <image-id> > <local-mount-path>/myImage.tar

being overwhelmed by being VERY NEW to python i missed some very simple and useful commands given here: Print in terminal with colors using Python? -

eventually decided to use CLINT as an answer that was given there by great and smart people

SELECT [name] 
FROM master.dbo.sysdatabases 
WHERE dbid > 4 and [name] <> 'ReportServer' and [name] <> 'ReportServerTempDB'

This will work for both condition, Whether reporting is enabled or not

There is no error in the code, but the error is thrown due to the following:

 - Please check whether you have given Read-write permission to MS-Access database file.
 - The Database file where it is stored (say in Folder1) is read-only..? 

suppose you are stored the database (MS-Access file) in read only folder, while running your application the connection is not force-fully opened. Hence change the file permission / its containing folder permission like in C:\Program files all most all c drive files been set read-only so changing this permission solves this Problem.

You can find files here, when you closed SSMS window accidentally

C:\Windows\System32\SQL Server Management Studio\Backup Files\Solution1

I solved the problem by adding the following dependency

<dependency>
    <groupId>javax.persistence</groupId>
    <artifactId>persistence-api</artifactId>
    <version>2.2</version>
</dependency>

Together with

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>

Use This its is very useful for your solution:

1. Start > Control Panel > Administrative Tools > Services
2. Scroll down to 'Windows Presentation Foundation Font Cache 4.0.0.0' and then right click and select properties
3. In the window then select 'disabled' in the startup type combo

There is indentation problem. The code below will work:

import textwrap

def sendMail(FROM,TO,SUBJECT,TEXT,SERVER):
    import smtplib
    """this is some test documentation in the function"""
    message = textwrap.dedent("""\
        From: %s
        To: %s
        Subject: %s
        %s
        """ % (FROM, ", ".join(TO), SUBJECT, TEXT))
    # Send the mail
    server = smtplib.SMTP(SERVER)
    server.sendmail(FROM, TO, message)
    server.quit()

I also stuck on this issue. But I solved simply by defining the foreign key as unsigned integer. Find the below example-

CREATE TABLE parent (
   id int(10) UNSIGNED NOT NULL,
    PRIMARY KEY (id)
) ENGINE=INNODB;

CREATE TABLE child (
    id int(10) UNSIGNED NOT NULL,
    parent_id int(10) UNSIGNED DEFAULT NULL,
    FOREIGN KEY (parent_id) REFERENCES parent(id) ON DELETE CASCADE
) ENGINE=INNODB;

I am using OkHttp and I just faced this issue.

For the first part @thucnguyen was on the right track.

This happened when you call getActivity() in another thread that finished after the fragment has been removed. The typical case is calling getActivity() (ex. for a Toast) when an HTTP request finished (in onResponse for example).

Some HTTP calls were being executed even after the activity had been closed (because it can take a while for an HTTP request to be completed). I then, through the HttpCallback tried to update some Fragment fields and got a null exception when trying to getActivity().

http.newCall(request).enqueue(new Callback(...
  onResponse(Call call, Response response) {
    ...
    getActivity().runOnUiThread(...) // <-- getActivity() was null when it had been destroyed already

IMO the solution is to prevent callbacks to occur when the fragment is no longer alive anymore (and that's not just with Okhttp).

The fix: Prevention.

If you have a look at the fragment lifecycle (more info here), you'll notice that there's onAttach(Context context) and onDetach() methods. These get called after the Fragment belongs to an activity and just before stop being so respectively.

That means that we can prevent that callback to happen by controlling it in the onDetach method.

@Override
public void onAttach(Context context) {
    super.onAttach(context);

    // Initialize HTTP we're going to use later.
    http = new OkHttpClient.Builder().build();
}

@Override
public void onDetach() {
    super.onDetach();

    // We don't want to receive any more information about the current HTTP calls after this point.
    // With Okhttp we can simply cancel the on-going ones (credits to https://github.com/square/okhttp/issues/2205#issuecomment-169363942).
    for (Call call : http.dispatcher().queuedCalls()) {
        call.cancel();
    }
    for (Call call : http.dispatcher().runningCalls()) {
        call.cancel();
    }
}

This is how I've always managed to complete this task.

For Push:

MainView *nextView=[[MainView alloc] init];
[UIView  beginAnimations:nil context:NULL];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:0.75];
[self.navigationController pushViewController:nextView animated:NO];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.navigationController.view cache:NO];
[UIView commitAnimations];
[nextView release];

For Pop:

[UIView  beginAnimations:nil context:NULL];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:0.75];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.navigationController.view cache:NO];
[UIView commitAnimations];

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDelay:0.375];
[self.navigationController popViewControllerAnimated:NO];
[UIView commitAnimations];

I still get a lot of feedback from this so I'm going to go ahead and update it to use animation blocks which is the Apple recommended way to do animations anyway.

For Push:

MainView *nextView = [[MainView alloc] init];
[UIView animateWithDuration:0.75
                         animations:^{
                             [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
                             [self.navigationController pushViewController:nextView animated:NO];
                             [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.navigationController.view cache:NO];
                         }];

For Pop:

[UIView animateWithDuration:0.75
                         animations:^{
                             [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
                             [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.navigationController.view cache:NO];
                         }];
[self.navigationController popViewControllerAnimated:NO];

Simple solution:

document.onpaste = function(e) {
    var pasted = e.clipboardData.getData('Text');
    console.log(pasted)
}

Here's the answer to all your questions: http://wiki.python.org/moin/PythonEditors

Are you mixing C and C++? One issue that can occur is that the declarations in the .h file for a .c file need to be surrounded by:

#if defined(__cplusplus)
  extern "C" {                 // Make sure we have C-declarations in C++ programs
#endif

and:

#if defined(__cplusplus)
  }
#endif

Note: if unable / unwilling to modify the .h file(s) in question, you can surround their inclusion with extern "C":

extern "C" {
#include <abc.h>
} //extern

Thank you @user1909426, I can found solution by php artisan list it will list all command that was used on L4. It can create controller only not Model. I follow this command to generate controller.

php artisan controller:make [Name]Controller

On Laravel 5, the command has changed:

php artisan make:controller [Name]Controller

Note: [Name] name of controller

Excel 2010 - if you're looking to reorder the series on a pivot chart:

• go to your underlying pivot table
• right-click on one of the Column Labels for the series you're looking to adjust (Note: you need to click on one of the series headings (i.e. 'Saturday' or 'Sunday' in the example shown below) not the 'Column Labels' text itself)
• in the pop-up menu, hover over 'Move' and then select an option from the resulting sub-menu to reposition the series variable.
• your pivot chart will update itself accordingly

For log4j 2 API , you can use

Logger logger = LogManager.getRootLogger();
Configurator.setAllLevels(logger.getName(), Level.getLevel(level));

Here's my hack... =D

# Make sure no one can connect to this database except you!
sudo -u postgres /usr/pgsql-9.4/bin/psql -c "UPDATE pg_database SET datallowconn=false WHERE datname='<DATABASE_NAME>';"

# Drop all existing connections except for yours!
sudo -u postgres /usr/pgsql-9.4/bin/psql -c "SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity WHERE pg_stat_activity.datname = '<DATABASE_NAME>' AND pid <> pg_backend_pid();"

# Drop database! =D
sudo -u postgres /usr/pgsql-9.4/bin/psql -c "DROP DATABASE <DATABASE_NAME>;"

I put this answer because include a command (above) to block new connections and because any attempt with the command...

REVOKE CONNECT ON DATABASE <DATABASE_NAME> FROM PUBLIC, <USERS_ETC>;

... do not works to block new connections!

Thanks to @araqnid @GoatWalker ! =D

https://stackoverflow.com/a/3185413/3223785

You can't use forward declaration with the typedef struct.

The struct itself is an anonymous type, so you don't have an actual name to forward declare.

typedef struct{
    int one;
    int two;
}myStruct;

A forward declaration like this wont work:

struct myStruct; //forward declaration fails

void blah(myStruct* pStruct);

//error C2371: 'myStruct' : redefinition; different basic types

Attach onchange event to the checkbox:

<input class="coupon_question" type="checkbox" name="coupon_question" value="1" onchange="valueChanged()"/>

<script type="text/javascript">
    function valueChanged()
    {
        if($('.coupon_question').is(":checked"))   
            $(".answer").show();
        else
            $(".answer").hide();
    }
</script>

We use a lot of Action delegate functionality in tests. When we need to build some default object and later need to modify it. I made little example. To build default person (John Doe) object we use BuildPerson() function. Later we add Jane Doe too, but we modify her birthdate and name and height.

public class Program
{
        public static void Main(string[] args)
        {
            var person1 = BuildPerson();

            Console.WriteLine(person1.Firstname);
            Console.WriteLine(person1.Lastname);
            Console.WriteLine(person1.BirthDate);
            Console.WriteLine(person1.Height);

            var person2 = BuildPerson(p =>
            {
                p.Firstname = "Jane";
                p.BirthDate = DateTime.Today;
                p.Height = 1.76;
            });

            Console.WriteLine(person2.Firstname);
            Console.WriteLine(person2.Lastname);
            Console.WriteLine(person2.BirthDate);
            Console.WriteLine(person2.Height);

            Console.Read();
        }

        public static Person BuildPerson(Action<Person> overrideAction = null)
        {
            var person = new Person()
            {
                Firstname = "John",
                Lastname = "Doe",
                BirthDate = new DateTime(2012, 2, 2)
            };

            if (overrideAction != null)
                overrideAction(person);

            return person;
        }
    }

    public class Person
    {
        public string Firstname { get; set; }
        public string Lastname { get; set; }
        public DateTime BirthDate { get; set; }
        public double Height { get; set; }
    }

SqlCommand yourCommand = new SqlCommand();
yourCommand.Connection = yourSqlConn;
yourCommand.Parameters.Add("@yourParam");
yourCommand.Parameters["@yourParam"].Direction = ParameterDirection.Output;

// execute your query successfully

int yourResult = yourCommand.Parameters["@yourParam"].Value;

I was actually wondering how to do this today...and coincidentally, Phil Haack posted a tip about using posh-git (Git on powershell), which gives you tab auto-complete and a few more cool bits. I'm not going back to Git bash.

check it out

http://haacked.com/archive/2011/12/13/better-git-with-powershell.aspx

Some definitions

• A shade is produced by "darkening" a hue or "adding black"
• A tint is produced by "ligthening" a hue or "adding white"

Creating a tint or a shade

Depending on your Color Model, there are different methods to create a darker (shaded) or lighter (tinted) color:

• RGB:

  • To shade:

    newR = currentR * (1 - shade_factor)
    newG = currentG * (1 - shade_factor)
    newB = currentB * (1 - shade_factor)
    

  • To tint:

    newR = currentR + (255 - currentR) * tint_factor
    newG = currentG + (255 - currentG) * tint_factor
    newB = currentB + (255 - currentB) * tint_factor
    

  • More generally, the color resulting in layering a color RGB(currentR,currentG,currentB) with a color RGBA(aR,aG,aB,alpha) is:

    newR = currentR + (aR - currentR) * alpha
    newG = currentG + (aG - currentG) * alpha
    newB = currentB + (aB - currentB) * alpha
    

  where (aR,aG,aB) = black = (0,0,0) for shading, and (aR,aG,aB) = white = (255,255,255) for tinting

• HSV or HSB:

  • To shade: lower the Value / Brightness or increase the Saturation
  • To tint: lower the Saturation or increase the Value / Brightness
• HSL:
  • To shade: lower the Lightness
  • To tint: increase the Lightness

There exists formulas to convert from one color model to another. As per your initial question, if you are in RGB and want to use the HSV model to shade for example, you can just convert to HSV, do the shading and convert back to RGB. Formula to convert are not trivial but can be found on the internet. Depending on your language, it might also be available as a core function :

• RGB to HSV color in javascript?
• Convert RGB value to HSV

Comparing the models

• RGB has the advantage of being really simple to implement, but:
  • you can only shade or tint your color relatively
  • you have no idea if your color is already tinted or shaded
• HSV or HSB is kind of complex because you need to play with two parameters to get what you want (Saturation & Value / Brightness)
• HSL is the best from my point of view:
  • supported by CSS3 (for webapp)
  • simple and accurate:
    • 50% means an unaltered Hue
    • >50% means the Hue is lighter (tint)
    • <50% means the Hue is darker (shade)
  • given a color you can determine if it is already tinted or shaded
  • you can tint or shade a color relatively or absolutely (by just replacing the Lightness part)

• If you want to learn more about this subject: Wiki: Colors Model
• For more information on what those models are: Wikipedia: HSL and HSV

Correct me if wrong...I think request does persist between consecutive pages..

Think you traverse from page 1--> page 2-->page 3.

You have some value set in the request object using setAttribute from page 1, which you retrieve in page 2 using getAttribute,then if you try setting something again in same request object to retrieve it in page 3 then it fails giving you null value as "the request that created the JSP, and the request that gets generated when the JSP is submitted are completely different requests and any attributes placed on the first one will not be available on the second".

I mean something like this in page 2 fails:

Where as the same thing has worked in case of page 1 like:

So I think I would need to proceed with either of the two options suggested by Phill.

I'm on windows and had the same issue.

I used the below code :

install.packages("devtools", type = "win.binary")

Then library(devtools) worked for me.

TLDR: Aggregation pipeline is faster as compared to conventional .find().sort().

Now moving to the real explanation. There are two ways to perform sorting operations in MongoDB:

1. Using .find() and .sort().
2. Or using the aggregation pipeline.

As suggested by many .find().sort() is the simplest way to perform the sorting.

.sort([("field1",pymongo.ASCENDING), ("field2",pymongo.DESCENDING)])

However, this is a slow process compared to the aggregation pipeline.

Coming to the aggregation pipeline method. The steps to implement simple aggregation pipeline intended for sorting are:

1. $match (optional step)
2. $sort

NOTE: In my experience, the aggregation pipeline works a bit faster than the .find().sort() method.

Here's an example of the aggregation pipeline.

db.collection_name.aggregate([{
    "$match": {
        # your query - optional step
    }
},
{
    "$sort": {
        "field_1": pymongo.ASCENDING,
        "field_2": pymongo.DESCENDING,
        ....
    }
}])

Try this method yourself, compare the speed and let me know about this in the comments.

Edit: Do not forget to use allowDiskUse=True while sorting on multiple fields otherwise it will throw an error.

I'm using jQuery 3.3.1 and I received the same error, in my case, the URL was an Object vs a string.

What happened was, that I took URL = window.location - which returned an object. Once I've changed it into window.location.href - it worked w/o the e.indexOf error.

I also got the same error in my SQL Code, This solution works for me,

Check the data in Primary Table May be you are entering a column value which is not present in the primary key column.

For me, I was trying to install an old version of bcrypt which was not found in npm, I just edited package.json and manually put the latest version and then ran npm install and it worked

For this true mysql style use this function below: 2019/02/28 15:33:12

• If you click the
• 'Run code snippet' button below
• It will show your an simple realtime digital clock example The demo will appear below the code snippet.

function getDateTime() {_x000D_
        var now     = new Date(); _x000D_
        var year    = now.getFullYear();_x000D_
        var month   = now.getMonth()+1; _x000D_
        var day     = now.getDate();_x000D_
        var hour    = now.getHours();_x000D_
        var minute  = now.getMinutes();_x000D_
        var second  = now.getSeconds(); _x000D_
        if(month.toString().length == 1) {_x000D_
             month = '0'+month;_x000D_
        }_x000D_
        if(day.toString().length == 1) {_x000D_
             day = '0'+day;_x000D_
        }   _x000D_
        if(hour.toString().length == 1) {_x000D_
             hour = '0'+hour;_x000D_
        }_x000D_
        if(minute.toString().length == 1) {_x000D_
             minute = '0'+minute;_x000D_
        }_x000D_
        if(second.toString().length == 1) {_x000D_
             second = '0'+second;_x000D_
        }   _x000D_
        var dateTime = year+'/'+month+'/'+day+' '+hour+':'+minute+':'+second;   _x000D_
         return dateTime;_x000D_
    }_x000D_
_x000D_
    // example usage: realtime clock_x000D_
    setInterval(function(){_x000D_
        currentTime = getDateTime();_x000D_
        document.getElementById("digital-clock").innerHTML = currentTime;_x000D_
    }, 1000);

<div id="digital-clock"></div>

You can use the workbook.get_worksheet_by_name() feature: https://xlsxwriter.readthedocs.io/workbook.html#get_worksheet_by_name

According to https://xlsxwriter.readthedocs.io/changes.html the feature has been added on May 13, 2016.

"Release 0.8.7 - May 13 2016

-Fix for issue when inserting read-only images on Windows. Issue #352.

-Added get_worksheet_by_name() method to allow the retrieval of a worksheet from a workbook via its name.

-Fixed issue where internal file creation and modification dates were in the local timezone instead of UTC."

pd.read_excel(file_name) 

sometimes this code gives an error for xlsx files as: XLRDError:Excel xlsx file; not supported

instead , you can use openpyxl engine to read excel file.

df_samples = pd.read_excel(r'filename.xlsx', engine='openpyxl')

It worked for me

No, it is not possible to change the content of the buttons in the dialog displayed by the confirm function. You can use Javascript to create a dialog that looks similar.

def is_prime(x):
    n = 2
    if x < n:
        return False
    else:    
        while n < x:
           print n
            if x % n == 0:
                return False
                break
            n = n + 1
        else:
            return True

an Activity is a specialization of Context so, if you have a Context you already know which activity you intend to use and can simply cast a into c; where a is an Activity and c is a Context.

Activity a = (Activity) c;

You have $headers .= '...'; followed by $headers = '...';; the second line is overwriting the first.

Just put the $headers .= "Bcc: $emailList\r\n"; say after the Content-type line and it should be fine.

On a side note, the To is generally required; mail servers might mark your message as spam otherwise.

$headers  = "From: [email protected]\r\n" .
  "X-Mailer: php\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
$headers .= "Bcc: $emailList\r\n";

From the threading module documentation

There is a “main thread” object; this corresponds to the initial thread of control in the Python program. It is not a daemon thread.

There is the possibility that “dummy thread objects” are created. These are thread objects corresponding to “alien threads”, which are threads of control started outside the threading module, such as directly from C code. Dummy thread objects have limited functionality; they are always considered alive and daemonic, and cannot be join()ed. They are never deleted, since it is impossible to detect the termination of alien threads.

So, to catch those two cases when you are not interested in keeping a list of the threads you create:

import threading as thrd


def alter_data(data, index):
    data[index] *= 2


data = [0, 2, 6, 20]

for i, value in enumerate(data):
    thrd.Thread(target=alter_data, args=[data, i]).start()

for thread in thrd.enumerate():
    if thread.daemon:
        continue
    try:
        thread.join()
    except RuntimeError as err:
        if 'cannot join current thread' in err.args[0]:
            # catchs main thread
            continue
        else:
            raise

Whereupon:

>>> print(data)
[0, 4, 12, 40]

You're not actually using promises here. Parse lets you use callbacks or promises; your choice.

To use promises, do the following:

query.find().then(function() {
    console.log("success!");
}, function() {
    console.log("error");
});

Now, to execute stuff after the promise is complete, you can just execute it inside the promise callback inside the then() call. So far this would be exactly the same as regular callbacks.

To actually make good use of promises is when you chain them, like this:

query.find().then(function() {
    console.log("success!");

    return new Parse.Query(Obj).get("sOmE_oBjEcT");
}, function() {
    console.log("error");
}).then(function() {
    console.log("success on second callback!");
}, function() {
    console.log("error on second callback");
});

Just checkout the commit you wants your new branch start from and create a new branch

git checkout -b newbranch 6e559cb95

It depends, if you are referring to unsigned long the formatting character is "%lu". If you're referring to signed long the formatting character is "%ld".

The warning from your compiler is telling you that your format specifier doesn't match the data type you're passing to it.

Try using %lx or %llx. For more portability, include inttypes.h and use the PRIx64 macro.

For example: printf("val = 0x%" PRIx64 "\n", val); (note that it's string concatenation)

String string;
for (Datapoint d : dataPointList) {    
   Field[] fields = d.getFields();
   for (Field f : fields) {
      String value = (String) g.get(d);
      if (value.equals(string)) {
         //Do your stuff
      }    
   }
}

With X installed (e.g. from homebrew, or Quartz), a simple "xterm &" does (nearly) the trick, it opens a new terminal window (not a tab, though).

Code:

^([0-9]*[1-9][0-9]*(\.[0-9]+)?|[0]+\.[0-9]*[1-9][0-9]*)$

Example: http://regexr.com/3anf5

Reference: https://social.msdn.microsoft.com/Forums/en-US/17089c0f-f9cb-437a-9667-ba8329681624/regular-expression-number-greater-than-0?forum=regexp

There is no generic type which will tell the compiler that a method returns nothing.

I believe the convention is to use Object when inheriting as a type parameter

OR

Propagate the type parameter up and then let users of your class instantiate using Object and assigning the object to a variable typed using a type-wildcard ?:

interface B<E>{ E method(); }

class A<T> implements B<T>{

    public T method(){
        // do something
        return null;
    }
}

A<?> a = new A<Object>();

Assuming your dataframe is mydf:

mydf$task <- factor(mydf$task, levels = c("up", "down", "left", "right", "front", "back"))

As my first object is a native javascript object (used like a list of objects), push didn't work in my escenario, but I resolved it by adding new key as following:

MyObjList['newKey'] = obj;

In addition to this, may be usefull to know how to delete same object inserted before:

delete MyObjList['newKey'][id];

Hope it helps someone as it helped me;

Use this:

Format(Now, "MMMM dd, yyyy")

More: Format Function

Check this How to view contents of NSDictionary variable in Xcode debugger?

I also use

po variableName
print variableName

in Console.

In your case it is possible to execute

print [myData objectAtIndex:indexPath.row]  

or

po [myData objectAtIndex:indexPath.row]

SELECT ROUND((6 - 3 * RAND()), 0)

1. Open a command prompt as an Administrator.

2. Enter slmgr /upk and wait for this to complete. This will uninstall the current product key from Windows and put it into an unlicensed state.

3. Enter slmgr /cpky and wait for this to complete. This will remove the product key from the registry if it's still there.

4. Enter slmgr /rearm and wait for this to complete. This is to reset the Windows activation timers so the new users will be prompted to activate Windows when they put in the key.

This should put the system back to a pre-key state.

Hope this helps you out!

if current directory of the operating system is the path of the workbook you are using, Workbooks.Open FileName:= "TRICATEndurance Summary.html" would suffice. if you are making calculations with the path, you can refer to current directory as . and then \ to tell the file is in that dir, and in case you have to change the os's current directory to your workbook's path, you can use ChDrive and ChDir to do so.

ChDrive ThisWorkbook.Path
ChDir ThisWorkbook.Path
Workbooks.Open FileName:= ".\TRICATEndurance Summary.html"

This is really old, but I wanted to add my slight variation for anyone else who may stumble across this. Regular expressions are powerful things.

To keep the text which falls between the equal sign and the comma:

-replace "^.*?=(.*?),.*?$",'$1'

This regular expression starts at the beginning of the line, wipes all characters until the first equal sign, captures every character until the next comma, then wipes every character until the end of the line. It then replaces the entire line with the capture group (anything within the parentheses). It will match any line that contains at least one equal sign followed by at least one comma. It is similar to the suggestion by Trix, but unlike that suggestion, this will not match lines which only contain either an equal sign or a comma, it must have both in order.

Adding to ben.bourdin answer, you can at least in any HTML based application, check if the browser supports HLS in its video element:

Let´s assume that your video element ID is "myVideo", then through javascript you can use the "canPlayType" function (http://www.w3schools.com/tags/av_met_canplaytype.asp)

var videoElement = document.getElementById("myVideo");
if(videoElement.canPlayType('application/vnd.apple.mpegurl') === "probably" || videoElement.canPlayType('application/vnd.apple.mpegurl') === "maybe"){
    //Actions like playing the .m3u8 content
}
else{
    //Actions like playing another video type
}

The canPlayType function, returns:

"" when there is no support for the specified audio/video type

"maybe" when the browser might support the specified audio/video type

"probably" when it most likely supports the specified audio/video type (you can use just this value in the validation to be more sure that your browser supports the specified type)

Hope this help :)

Best regards!

Another solution I found to work is to set a mousewheel handler on the inside container and make sure it doesn't propagate by setting its last parameter to false and stopping the event bubble.

document.getElementById('content').addEventListener('mousewheel',function(evt){evt.cancelBubble=true;   if (evt.stopPropagation) evt.stopPropagation},false);

Scroll works fine in the inner container, but the event doesn't propagate to the body and so it does not scroll. This is in addition to setting the body properties overflow:hidden and height:100%.

I found using opacity is better, it allows you to add css3 transitions to make a nice finished hover effect. The transitions will just be dropped by older IE browsers, so it degrades gracefully to.

#stuff {_x000D_
    opacity: 0.0;_x000D_
    -webkit-transition: all 500ms ease-in-out;_x000D_
    -moz-transition: all 500ms ease-in-out;_x000D_
    -ms-transition: all 500ms ease-in-out;_x000D_
    -o-transition: all 500ms ease-in-out;_x000D_
    transition: all 500ms ease-in-out;_x000D_
}_x000D_
#hover {_x000D_
    width:80px;_x000D_
    height:20px;_x000D_
    background-color:green;_x000D_
    margin-bottom:15px;_x000D_
}_x000D_
#hover:hover + #stuff {_x000D_
    opacity: 1.0;_x000D_
}

<div id="hover">Hover</div>_x000D_
<div id="stuff">stuff</div>

No More confusion In the recent versions of Django it is mentioned clearly that the Ip address of the client is available at

request.META.get("REMOTE_ADDR")

for more info check the Django Docs

The simplest way to see ram usage if you have RDP access / console access would be just launch task manager - click processes - show processes from all users, sort by RAM - This will give you SQL's usage.

As was mentioned above, to decrease the size (which will take effect immediately, no restart required) launch sql management studio, click the server, properties - memory and decrease the max. There's no exactly perfect number, but make sure the server has ram free for other tasks.

The answers about perfmon are correct and should be used, but they aren't as obvious a method as task manager IMHO.

I just ran into the exact same problem (same Python version, OS, code, etc).

You just have to copy Python's Lib/ directory in your program's working directory ( on VC it's the directory where the .vcproj is )

Had the same issue and got curious about the performance of each solution.

Here's is the %timeit:

import numpy as np
lst = [['a','b','c'], [1,2,3], ['x','y','z']]

The first numpy-way, transforming the array:

%timeit list(np.array(lst).T[0])
4.9 µs ± 163 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)

Fully native using list comprehension (as explained by @alecxe):

%timeit [item[0] for item in lst]
379 ns ± 23.1 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

Another native way using zip (as explained by @dawg):

%timeit list(zip(*lst))[0]
585 ns ± 7.26 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)

Second numpy-way. Also explained by @dawg:

%timeit list(np.array(lst)[:,0])
4.95 µs ± 179 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)

Surprisingly (well, at least for me) the native way using list comprehension is the fastest and about 10x faster than the numpy-way. Running the two numpy-ways without the final list saves about one µs which is still in the 10x difference.

Note that, when I surrounded each code snippet with a call to len, to ensure that Generators run till the end, the timing stayed the same.

git fetch origin our-team

or

git pull origin our-team

but first you should make sure that you already on the branch you want to update to (featurex).

I would first suggest that you step back and look at organizing your plays to not require such complexity, but if you really really do, use the following:

   vars:
    myvariable: "{{[param1|default(''), param2|default(''), param3|default('')]|join(',')}}"

System.Diagnostics.Process.Start("http://www.webpage.com");

One of many ways.

IN GALAXY Devices :

You need to make sure that you havn't turned it off in the device using the Settings > Developer Options:

If you know how much elements the array has, a simple way is doing this:

String appendedString = "" + array[0] + "" + array[1] + "" + array[2] + "" + array[3]; 

I agree that it's counterintuitive at first, but there's a good reason. Join can't be a method of a list because:

• it must work for different iterables too (tuples, generators, etc.)
• it must have different behavior between different types of strings.

There are actually two join methods (Python 3.0):

>>> b"".join
<built-in method join of bytes object at 0x00A46800>
>>> "".join
<built-in method join of str object at 0x00A28D40>

If join was a method of a list, then it would have to inspect its arguments to decide which one of them to call. And you can't join byte and str together, so the way they have it now makes sense.

I wanted to see a benchmark result of functions mentioned in answers including unutbu's.

Also want to point out that numpy doc recommend to use arr.reshape(-1) in case view is preferable. (even though ravel is tad faster in the following result)

TL;DR: np.ravel is the most performant (by very small amount).

Benchmark

Functions:

• np.ravel: returns view, if possible
• np.reshape(-1): returns view, if possible
• np.flatten: returns copy
• np.flat: returns numpy.flatiter. similar to iterable

numpy version: '1.18.0'

Execution times on different ndarray sizes

+-------------+----------+-----------+-----------+-------------+
|  function   |   10x10  |  100x100  | 1000x1000 | 10000x10000 |
+-------------+----------+-----------+-----------+-------------+
| ravel       | 0.002073 |  0.002123 |  0.002153 |    0.002077 |
| reshape(-1) | 0.002612 |  0.002635 |  0.002674 |    0.002701 |
| flatten     | 0.000810 |  0.007467 |  0.587538 |  107.321913 |
| flat        | 0.000337 |  0.000255 |  0.000227 |    0.000216 |
+-------------+----------+-----------+-----------+-------------+

Conclusion

ravel and reshape(-1)'s execution time was consistent and independent from ndarray size. However, ravel is tad faster, but reshape provides flexibility in reshaping size. (maybe that's why numpy doc recommend to use it instead. Or there could be some cases where reshape returns view and ravel doesn't).
If you are dealing with large size ndarray, using flatten can cause a performance issue. Recommend not to use it. Unless you need a copy of the data to do something else.

Used code

import timeit
setup = '''
import numpy as np
nd = np.random.randint(10, size=(10, 10))
'''

timeit.timeit('nd = np.reshape(nd, -1)', setup=setup, number=1000)
timeit.timeit('nd = np.ravel(nd)', setup=setup, number=1000)
timeit.timeit('nd = nd.flatten()', setup=setup, number=1000)
timeit.timeit('nd.flat', setup=setup, number=1000)

it should help:

android {
    ...
    useLibrary 'org.apache.http.legacy'
    ...
}

To avoid missing link errors add to dependencies

dependencies {
    provided 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'
}

or

dependencies {
    compileOnly 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'
}

because

Warning: Configuration 'provided' is obsolete and has been replaced with 'compileOnly'.

I replaced the original code with import { Observable, of } from 'rxjs', and the problem is solved.

For restricting the browser back event:

window.history.pushState(null, "", window.location.href);
window.onpopstate = function () {
    window.history.pushState(null, "", window.location.href);
};

EOF is a constant in C. You are not checking the actual file for EOF. You need to do something like this

while(!feof(stdin))

Here is the documentation to feof. You can also check the return value of scanf. It returns the number of successfully converted items, or EOF if it reaches the end of the file.

According to the latest pandas documentation you can read a csv file selecting only the columns which you want to read.

import pandas as pd

df = pd.read_csv('some_data.csv', usecols = ['col1','col2'], low_memory = True)

Here we use usecols which reads only selected columns in a dataframe.

We are using low_memory so that we Internally process the file in chunks.

Easier with inline coding

<button type="button" ng-click="showmore = (showmore !=null && showmore) ? false : true;" class="btn float-right" data-toggle="collapse" data-target="#moreoptions">
            <span class="glyphicon" ng-class="showmore ? 'glyphicon-collapse-up': 'glyphicon-collapse-down'"></span>
            {{ showmore !=null && showmore ? "Hide More Options" : "Show More Options" }}
        </button>


<div id="moreoptions" class="collapse">Your Panel</div>

use the dynamic keyword as return type.

 private dynamic getValuesD<T>()
    {
        if (typeof(T) == typeof(int))
        {
            return 0;
        }
        else if (typeof(T) == typeof(string))
        {
            return "";
        }
        else if (typeof(T) == typeof(double))
        {
            return 0;
        }
        else
        {
            return false;
        }
    }

        int res = getValuesD<int>();
        string res1 = getValuesD<string>();
        double res2 = getValuesD<double>();
        bool res3 = getValuesD<bool>();

// dynamic keyword is preferable to use in this case instead of an object type

// because dynamic keyword keeps the underlying structure and data type so that // you can directly inspect and view the value.

// in object type, you have to cast the object to a specific data type to view // the underlying value.

regards,

Abhijit

If we get the value as int and we set it to String, the error occurs. PFB my solution,

Textview = tv_property_count;
int property_id;
tv_property_count.setText(String.valueOf(property_id));

sys.path is only searched for Python modules. For dynamic linked libraries, the paths searched must be in LD_LIBRARY_PATH. Check if your LD_LIBRARY_PATH includes /usr/local/lib, and if it doesn't, add it and try again.

Some more information (source):

In Linux, the environment variable LD_LIBRARY_PATH is a colon-separated set of directories where libraries should be searched for first, before the standard set of directories; this is useful when debugging a new library or using a nonstandard library for special purposes. The environment variable LD_PRELOAD lists shared libraries with functions that override the standard set, just as /etc/ld.so.preload does. These are implemented by the loader /lib/ld-linux.so. I should note that, while LD_LIBRARY_PATH works on many Unix-like systems, it doesn't work on all; for example, this functionality is available on HP-UX but as the environment variable SHLIB_PATH, and on AIX this functionality is through the variable LIBPATH (with the same syntax, a colon-separated list).

Update: to set LD_LIBRARY_PATH, use one of the following, ideally in your ~/.bashrc or equivalent file:

export LD_LIBRARY_PATH=/usr/local/lib

or

export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH

Use the first form if it's empty (equivalent to the empty string, or not present at all), and the second form if it isn't. Note the use of export.

You can simply convert the given number using Number primitive type in JavaScript as shown below.

var c = Number(first) + Number(second);

I have also this problem when I do with XCode project what is exported from cordova framework. Resolution : You have to create Apple-ID and Provisioining-profile by yourself. Because Xcode seems to be unable to create it for you.

In my case, I needed to add the JMETER_HOME environment variable to be available via my Ant build scripts across all projects on my Jenkins server (Linux), in a way that would not interfere with my local build environment (Windows and Mac) in the build.xml script. Setting the environment variable via Manage Jenkins - Configure System - Global properties was the easiest and least intrusive way to accomplish this. No plug-ins are necessary.

The environment variable is then available in Ant via:

<property environment="env" />
<property name="jmeter.home" value="${env.JMETER_HOME}" />

This can be verified to works by adding:

<echo message="JMeter Home: ${jmeter.home}"/>

Which produces:

JMeter Home: ~/.jmeter

This is the best solution

http://numeraljs.com/

numeral().unformat('0.02'); = 0.02

In case of Swift we can implement following

We can create struct which allows you to create a structured data

struct Platform {
    static var isSimulator: Bool {
        #if targetEnvironment(simulator)
            // We're on the simulator
            return true
        #else
            // We're on a device
             return false
        #endif
    }
}

Then If we wanted to Detect if app is being built for device or simulator in Swift then .

if Platform.isSimulator {
    // Do one thing
} else {
    // Do the other
}

Dominc has the right idea, but put the calculation on the other side of the expression.

SELECT * FROM my_table WHERE endTime < DATE_SUB(CONVERT_TZ(NOW(), @@global.time_zone, 'GMT'), INTERVAL 30 MINUTE)

This has the advantage that you're doing the 30 minute calculation once instead of on every row. That also means MySQL can use the index on that column. Both of thse give you a speedup.

The setCustomValidity let you change the default validation message.Here is a simple exmaple of how to use it.

var age  =  document.getElementById('age');
    age.form.onsubmit = function () {
    age.setCustomValidity("This is not a valid age.");
 };

#Use this, THIS IS FOR EXTRACTING NUMBER FROM STRING IN GENERAL. #To get all the numeric occurences.

*split function to convert string to list and then the list comprehension which can help us iterating through the list and is digit function helps to get the digit out of a string.

getting number from string

use list comprehension+isdigit()

test_string = "i have four ballons for 2 kids"

print("The original string : "+ test_string)


# list comprehension + isdigit() +split()

res = [int(i) for i in test_string.split() if i.isdigit()]
print("The numbers list is : "+ str(res))

#To extract numeric values from a string in python

*Find list of all integer numbers in string separated by lower case characters using re.findall(expression,string) method.

*Convert each number in form of string into decimal number and then find max of it.

import re 
 def extractMax(input):

# get a list of all numbers separated by lower case characters
 
 numbers = re.findall('\d+',input) 

# \d+ is a regular expression which means one or more digit

number = map(int,numbers)
print max(numbers)
if __name__=="__main__":
input = 'sting'
extractMax(input)

Adding to jelovirt's answer, you can use number() to convert the value to a number, then round(), floor(), or ceiling() to get a whole integer.

Example

<xsl:variable name="MyValAsText" select="'5.14'"/>
<xsl:value-of select="number($MyValAsText) * 2"/> <!-- This outputs 10.28 -->
<xsl:value-of select="floor($MyValAsText)"/> <!-- outputs 5 -->
<xsl:value-of select="ceiling($MyValAsText)"/> <!-- outputs 6 -->
<xsl:value-of select="round($MyValAsText)"/> <!-- outputs 5 -->

This is specifically a special case because computers represent numbers in base 2. This is generalizable:

(number)_base % base^x

is equivilent to the last x digits of (number)_base.

Most users who receive the "not JSON serializable" error simply need to specify default=str when using json.dumps. For example:

json.dumps(my_obj, default=str)

This will force a conversion to str, preventing the error. Of course then look at the generated output to confirm that it is what you need.

A hash_map is an older, unstandardized version of what for standardization purposes is called an unordered_map (originally in TR1, and included in the standard since C++11). As the name implies, it's different from std::map primarily in being unordered -- if, for example, you iterate through a map from begin() to end(), you get items in order by key¹, but if you iterate through an unordered_map from begin() to end(), you get items in a more or less arbitrary order.

An unordered_map is normally expected to have constant complexity. That is, an insertion, lookup, etc., typically takes essentially a fixed amount of time, regardless of how many items are in the table. An std::map has complexity that's logarithmic on the number of items being stored -- which means the time to insert or retrieve an item grows, but quite slowly, as the map grows larger. For example, if it takes 1 microsecond to lookup one of 1 million items, then you can expect it to take around 2 microseconds to lookup one of 2 million items, 3 microseconds for one of 4 million items, 4 microseconds for one of 8 million items, etc.

From a practical viewpoint, that's not really the whole story though. By nature, a simple hash table has a fixed size. Adapting it to the variable-size requirements for a general purpose container is somewhat non-trivial. As a result, operations that (potentially) grow the table (e.g., insertion) are potentially relatively slow (that is, most are fairly fast, but periodically one will be much slower). Lookups, which cannot change the size of the table, are generally much faster. As a result, most hash-based tables tend to be at their best when you do a lot of lookups compared to the number of insertions. For situations where you insert a lot of data, then iterate through the table once to retrieve results (e.g., counting the number of unique words in a file) chances are that an std::map will be just as fast, and quite possibly even faster (but, again, the computational complexity is different, so that can also depend on the number of unique words in the file).

^{1 Where the order is defined by the third template parameter when you create the map, std::less<T> by default.}

If you want to iterate over a list and create a new list with "transformed" objects, you should use the map() function of stream + collect(). In the following example I find all people with the last name "l1" and each person I'm "mapping" to a new Employee instance.

public class Test {

    public static void main(String[] args) {
        List<Person> persons = Arrays.asList(
                new Person("e1", "l1"),
                new Person("e2", "l1"),
                new Person("e3", "l2"),
                new Person("e4", "l2")
        );

        List<Employee> employees = persons.stream()
                .filter(p -> p.getLastName().equals("l1"))
                .map(p -> new Employee(p.getName(), p.getLastName(), 1000))
                .collect(Collectors.toList());

        System.out.println(employees);
    }

}

class Person {

    private String name;
    private String lastName;

    public Person(String name, String lastName) {
        this.name = name;
        this.lastName = lastName;
    }

    // Getter & Setter
}

class Employee extends Person {

    private double salary;

    public Employee(String name, String lastName, double salary) {
        super(name, lastName);
        this.salary = salary;
    }

    // Getter & Setter
}

this is a bit late.. but i have seen this problem occurs when you want to insert or delete one line from/to DB but u put/pull more than one line or more than one value ,

E.g:

you want to delete one line from DB with a specific value such as id of an item but you've queried a list of ids then you will encounter the same exception message.

regards.

index.js

import {$,jQuery} from 'jquery';
// export for others scripts to use
window.$ = $;
window.jQuery = jQuery;

First, as @nem suggested in comment, the import should be done from node_modules/:

Well, importing from dist/ doesn't make sense since that is your distribution folder with production ready app. Building your app should take what's inside node_modules/ and add it to the dist/ folder, jQuery included.

Next, the glob –* as– is wrong as I know what object I'm importing (e.g. jQuery and $), so a straigforward import statement will work.

Last you need to expose it to other scripts using the window.$ = $.

Then, I import as both $ and jQuery to cover all usages, browserify remove import duplication, so no overhead here! ^o^y

You can use "translateX"

<div class="box">
<div class="absolute-right"></div>
</div>

<style type="text/css">
.box{
    text-align: right;
}
.absolute-right{
    display: inline-block;
    position: absolute;
}

/*The magic:*/
.absolute-right{
-moz-transform: translateX(-100%);
-ms-transform: translateX(-100%);
-webkit-transform: translateX(-100%);
-o-transform: translateX(-100%);
transform: translateX(-100%);
}
</style>

Have you looked into ControlsFx Popover control.

import org.controlsfx.control.PopOver;
import org.controlsfx.control.PopOver.ArrowLocation;

private PopOver item;

final Scene scene = addItemButton.getScene();

final Point2D windowCoord = new Point2D(scene.getWindow()
        .getX(), scene.getWindow().getY());

final Point2D sceneCoord = new Point2D(scene.getX(), scene.
                getY());

final Point2D nodeCoord = addItemButton.localToScene(0.0,
                        0.0);
final double clickX = Math.round(windowCoord.getX()
    + sceneCoord.getY() + nodeCoord.getX());

final double clickY = Math.round(windowCoord.getY()
        + sceneCoord.getY() + nodeCoord.getY());
item.setContentNode(addItemScreen);
item.setArrowLocation(ArrowLocation.BOTTOM_LEFT);
item.setCornerRadius(4);                            
item.setDetachedTitle("Add New Item");
item.show(addItemButton.getParent(), clickX, clickY);

This is only an example but a PopOver sounds like it could accomplish what you want. Check out the documentation for more info.

Important note: ControlsFX will only work on JavaFX 8.0 b118 or later.

You can use CurrentDirectory property.

Dim WshShell, strCurDir
Set WshShell = CreateObject("WScript.Shell")
strCurDir    = WshShell.CurrentDirectory
WshShell.Run strCurDir & "\attribute.exe", 0
Set WshShell = Nothing

starts with file:/// and ends with filename should work:

<img src="file:///C:/Users/91860/Desktop/snow.jpg" alt="Snow" style="width:100%;">

Here is what worked for me:

If you are installing on a 64-bit machine, make sure the application properties under the Build tab have "Any CPU" as the platform target, and unselect the check box for "Prefer 32-bit" if you have the option. Crystal is very touchy about 32/64 bit assemblies, and makes some pretty counterintuitive assumptions which are very difficult to troubleshoot.

if(isset($_SESSION))
{}
else
{}

Op De Cirkel is mostly right. His suggestion will work in most cases:

myString.replaceAll("\\p{C}", "?");

But if myString might contain non-BMP codepoints then it's more complicated. \p{C} contains the surrogate codepoints of \p{Cs}. The replacement method above will corrupt non-BMP codepoints by sometimes replacing only half of the surrogate pair. It's possible this is a Java bug rather than intended behavior.

Using the other constituent categories is an option:

myString.replaceAll("[\\p{Cc}\\p{Cf}\\p{Co}\\p{Cn}]", "?");

However, solitary surrogate characters not part of a pair (each surrogate character has an assigned codepoint) will not be removed. A non-regex approach is the only way I know to properly handle \p{C}:

StringBuilder newString = new StringBuilder(myString.length());
for (int offset = 0; offset < myString.length();)
{
    int codePoint = myString.codePointAt(offset);
    offset += Character.charCount(codePoint);

    // Replace invisible control characters and unused code points
    switch (Character.getType(codePoint))
    {
        case Character.CONTROL:     // \p{Cc}
        case Character.FORMAT:      // \p{Cf}
        case Character.PRIVATE_USE: // \p{Co}
        case Character.SURROGATE:   // \p{Cs}
        case Character.UNASSIGNED:  // \p{Cn}
            newString.append('?');
            break;
        default:
            newString.append(Character.toChars(codePoint));
            break;
    }
}

This is another method i figured out, where filteredUsers is a function that returns the sorted list of users.

var filtersample = {address: 'England', name: 'Mark'};_x000D_
_x000D_
filteredUsers() {_x000D_
  return this.users.filter((element) => {_x000D_
    return element['address'].toLowerCase().match(this.filtersample['address'].toLowerCase()) || element['name'].toLowerCase().match(this.filtersample['name'].toLowerCase());_x000D_
  })_x000D_
}

How to Use Sockets in JavaScript/HTML?

There is no facility to use general-purpose sockets in JS or HTML. It would be a security disaster, for one.

There is WebSocket in HTML5. The client side is fairly trivial:

socket= new WebSocket('ws://www.example.com:8000/somesocket');
socket.onopen= function() {
    socket.send('hello');
};
socket.onmessage= function(s) {
    alert('got reply '+s);
};

You will need a specialised socket application on the server-side to take the connections and do something with them; it is not something you would normally be doing from a web server's scripting interface. However it is a relatively simple protocol; my noddy Python SocketServer-based endpoint was only a couple of pages of code.

In any case, it doesn't really exist, yet. Neither the JavaScript-side spec nor the network transport spec are nailed down, and no browsers support it.

You can, however, use Flash where available to provide your script with a fallback until WebSocket is widely available. Gimite's web-socket-js is one free example of such. However you are subject to the same limitations as Flash Sockets then, namely that your server has to be able to spit out a cross-domain policy on request to the socket port, and you will often have difficulties with proxies/firewalls. (Flash sockets are made directly; for someone without direct public IP access who can only get out of the network through an HTTP proxy, they won't work.)

Unless you really need low-latency two-way communication, you are better off sticking with XMLHttpRequest for now.

CUDA is an excellent framework to start with. It lets you write GPGPU kernels in C. The compiler will produce GPU microcode from your code and send everything that runs on the CPU to your regular compiler. It is NVIDIA only though and only works on 8-series cards or better. You can check out CUDA zone to see what can be done with it. There are some great demos in the CUDA SDK. The documentation that comes with the SDK is a pretty good starting point for actually writing code. It will walk you through writing a matrix multiplication kernel, which is a great place to begin.

1. first add dependency in your code as implementation 'com.treebo:internetavailabilitychecker:1.0.4'
2. implements your class with InternetConnectivityListener.

public class MainActivity extends AppCompatActivity implements InternetConnectivityListener {

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

        InternetAvailabilityChecker.init(this);
        mInternetAvailabilityChecker = InternetAvailabilityChecker.getInstance();
        mInternetAvailabilityChecker.addInternetConnectivityListener(this);
    }

    @Override
    public void onInternetConnectivityChanged(boolean isConnected) {
        if (isConnected) {
            alertDialog = new AlertDialog.Builder(this).create();
            alertDialog.setTitle(" internet is connected or not");
            alertDialog.setMessage("connected");
            alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.dismiss();
                        }
                    });
            alertDialog.show();

    }
    else {
            alertDialog = new AlertDialog.Builder(this).create();
            alertDialog.setTitle("internet is connected or not");
            alertDialog.setMessage("not connected");
            alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.dismiss();
                        }
                    });
            alertDialog.show();

        }
    }
}

There are already many good answers to the part "what is uintptr_t data type". I will try to address the "what it can be used for?" part in this post.

Primarily for bitwise operations on pointers. Remember that in C++ one cannot perform bitwise operations on pointers. For reasons see Why can't you do bitwise operations on pointer in C, and is there a way around this?

Thus in order to do bitwise operations on pointers one would need to cast pointers to type unitpr_t and then perform bitwise operations.

Here is an example of a function that I just wrote to do bitwise exclusive or of 2 pointers to store in a XOR linked list so that we can traverse in both directions like a doubly linked list but without the penalty of storing 2 pointers in each node.

 template <typename T>
 T* xor_ptrs(T* t1, T* t2)
 {
     return reinterpret_cast<T*>(reinterpret_cast<uintptr_t>(t1)^reinterpret_cast<uintptr_t>(t2));
  }

There are many other ways to delete lines with specific string besides sed:

AWK

awk '!/pattern/' file > temp && mv temp file

Ruby (1.9+)

ruby -i.bak -ne 'print if not /test/' file

Perl

perl -ni.bak -e "print unless /pattern/" file

Shell (bash 3.2 and later)

while read -r line
do
  [[ ! $line =~ pattern ]] && echo "$line"
done <file > o
mv o file

GNU grep

grep -v "pattern" file > temp && mv temp file

And of course sed (printing the inverse is faster than actual deletion):

sed -n '/pattern/!p' file

If you're looking to store the information in a table, you need to use an INSERT or an UPDATE statement. It sounds like you need an UPDATE statement:

UPDATE  SomeTable
SET     SomeDateField = GETDATE()
WHERE   SomeID = @SomeID

The form's "on submit" handlers are called before the form is submitted. I don't know if there is a handler to be called after the form is submited. In the traditional non-Javascript sense the form submission will reload the page.

Since Qt 5.5 you can use QTextStream::readLineInto. It behaves similar to std::getline and is maybe faster as QTextStream::readLine, because it reuses the string:

QIODevice* device;
QTextStream in(&device);

QString line;
while (in.readLineInto(&line)) {
  // ...
}

Yes.

new ArrayList<String>(){{
   add("A");
   add("B");
}}

What this is actually doing is creating a class derived from ArrayList<String> (the outer set of braces do this) and then declare a static initialiser (the inner set of braces). This is actually an inner class of the containing class, and so it'll have an implicit this pointer. Not a problem unless you want to serialise it, or you're expecting the outer class to be garbage collected.

I understand that Java 7 will provide additional language constructs to do precisely what you want.

EDIT: recent Java versions provide more usable functions for creating such collections, and are worth investigating over the above (provided at a time prior to these versions)

Would like to outline a brief semantic parallel to an already correct answer.

In 'simple' terms, a recursive CTE can be semantically defined as the following parts:

1: The CTE query. Also known as ANCHOR.

2: The recursive CTE query on the CTE in (1) with UNION ALL (or UNION or EXCEPT or INTERSECT) so the ultimate result is accordingly returned.

3: The corner/termination condition. Which is by default when there are no more rows/tuples returned by the recursive query.

A short example that will make the picture clear:

;WITH SupplierChain_CTE(supplier_id, supplier_name, supplies_to, level)
AS
(
SELECT S.supplier_id, S.supplier_name, S.supplies_to, 0 as level
FROM Supplier S
WHERE supplies_to = -1    -- Return the roots where a supplier supplies to no other supplier directly

UNION ALL

-- The recursive CTE query on the SupplierChain_CTE
SELECT S.supplier_id, S.supplier_name, S.supplies_to, level + 1
FROM Supplier S
INNER JOIN SupplierChain_CTE SC
ON S.supplies_to = SC.supplier_id
)
-- Use the CTE to get all suppliers in a supply chain with levels
SELECT * FROM SupplierChain_CTE

Explanation: The first CTE query returns the base suppliers (like leaves) who do not supply to any other supplier directly (-1)

The recursive query in the first iteration gets all the suppliers who supply to the suppliers returned by the ANCHOR. This process continues till the condition returns tuples.

UNION ALL returns all the tuples over the total recursive calls.

Another good example can be found here.

PS: For a recursive CTE to work, the relations must have a hierarchical (recursive) condition to work on. Ex: elementId = elementParentId.. you get the point.

HTML

here pure angularjs: near to ng-click function you can write preventDefault() function by seperating semicolon

<a href="#" ng-click="do(); $event.preventDefault(); $event.stopPropagation();">Click me</a>

JS

$scope.do = function() {
    alert("do here anything..");
}

(or)

you can proceed this way, this is already discussed some one here.

HTML

<a href="#" ng-click="do()">Click me</a>

JS

$scope.do = function(event) {
    event.preventDefault();
    event.stopPropagation()
}

OSX

cd ~/Library/Preferences/SmartGit/
sed -i '' '/listx/d' ./*/preferences.yml
rm */license

Windows portable path to preferences.yml:

SmartGit\.settings\preferences.yml

/^\d+(?:, ?\d+)*$/

I'm not sure whether ZohoGorganzola's solution is correct; however, you may want to try getting at the element directly rather than trying to invoke a method on the jQuery collection, so instead of

$("#videoContainer").pause();

try

$("#videoContainer")[0].pause();

My error occurred because, somehow, there was an obj folder created inside my controllers folder. Just do a search in your application for a line inside your Assemblyinfo.cs. There may be a duplicate somewhere.

The print function in python adds itself \n

You could use

import sys
sys.stdout.write(a)

instead

Not sure what you meant, but you can permanently turn showing whitespaces on and off in Settings -> Editor -> General -> Appearance -> Show whitespaces.

Also, you can set it for a current file only in View -> Active Editor -> Show WhiteSpaces.

Edit:

Had some free time since it looks like a popular issue, I had written a plugin to inspect the code for such abnormalities. It is called Zero Width Characters locator and you're welcome to give it a try.

http://wxcode.sourceforge.net/docs/wxpdfdoc/

Works with the wxWidgets library.

sub last_filled_cell()
msgbox range("A65536").end(xlup).row
end sub

Here, A65536 is the last cell in the Column A this code was tested on excel 2003.

Resolved the problem using Jackson library. Prints are called out of Main class and all POJO classes are created. Here is the code snippets.

MainClass.java

public class MainClass {
  public static void main(String[] args) throws JsonParseException, 
       JsonMappingException, IOException {

String jsonStr = "{\r\n" + "    \"id\": 2,\r\n" + " \"socket\": \"0c317829-69bf- 
             43d6-b598-7c0c550635bb\",\r\n"
            + " \"type\": \"getDashboard\",\r\n" + "    \"data\": {\r\n"
            + "     \"workstationUuid\": \"ddec1caa-a97f-4922-833f- 
            632da07ffc11\"\r\n" + " },\r\n"
            + " \"reply\": true\r\n" + "}";

    ObjectMapper mapper = new ObjectMapper();

    MyPojo details = mapper.readValue(jsonStr, MyPojo.class);

    System.out.println("Value for getFirstName is: " + details.getId());
    System.out.println("Value for getLastName  is: " + details.getSocket());
    System.out.println("Value for getChildren is: " + 
      details.getData().getWorkstationUuid());
    System.out.println("Value for getChildren is: " + details.getReply());

}

MyPojo.java

public class MyPojo {
    private String id;

    private Data data;

    private String reply;

    private String socket;

    private String type;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public Data getData() {
        return data;
    }

    public void setData(Data data) {
        this.data = data;
    }

    public String getReply() {
        return reply;
    }

    public void setReply(String reply) {
        this.reply = reply;
    }

    public String getSocket() {
        return socket;
    }

    public void setSocket(String socket) {
        this.socket = socket;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    } 
}

Data.java

public class Data {
    private String workstationUuid;

    public String getWorkstationUuid() {
        return workstationUuid;
    }

    public void setWorkstationUuid(String workstationUuid) {
        this.workstationUuid = workstationUuid;
    }   
}

RESULTS:

Value for getFirstName is: 2
Value for getLastName  is: 0c317829-69bf-43d6-b598-7c0c550635bb
Value for getChildren is: ddec1caa-a97f-4922-833f-632da07ffc11
Value for getChildren is: true

another workaround:

var myarray = [];
$("#test").click(function() {
    myarray[index]=$("#drop").val();
    alert(myarray);
});

i wanted to add all checked checkbox to array. so example, if .each is used:

var vpp = [];
var incr=0;
$('.prsn').each(function(idx) {
   if (this.checked) {
       var p=$('.pp').eq(idx).val();
       vpp[incr]=(p);
       incr++;
   }
});
//do what ever with vpp array;

Your question is a little unclear. If you're generating hostDict in a loop:

with open('data.txt', 'a') as outfile:
    for hostDict in ....:
        json.dump(hostDict, outfile)
        outfile.write('\n')

If you mean you want each variable within hostDict to be on a new line:

with open('data.txt', 'a') as outfile:
    json.dump(hostDict, outfile, indent=2)

When the indent keyword argument is set it automatically adds newlines.

// An InputStream which is typically connected to keyboard input of console programs

Scanner in= new Scanner(System.in);

above line will invoke Constructor of Scanner class with argument System.in, and will return a reference to newly constructed object.

It is connected to a Input Stream that is connected to Keyboard, so now at run-time you can take user input to do required operation.

//Write piece of code 

To remove the memory leak -

in.close();//write at end of code.

Probably no one is scrolling down this far, but none of the above solutions fixed it for me, but making all my getter methods public did.

I'd left my getter visibility at package-private; Jackson decided it couldn't find them and blew up. (Using @JsonAutoDetect(getterVisibility=NON_PRIVATE) only partially fixed it.

Dynamic programming is a technique for solving problems with overlapping sub problems. A dynamic programming algorithm solves every sub problem just once and then Saves its answer in a table (array). Avoiding the work of re-computing the answer every time the sub problem is encountered. The underlying idea of dynamic programming is: Avoid calculating the same stuff twice, usually by keeping a table of known results of sub problems.

The seven steps in the development of a dynamic programming algorithm are as follows:

1. Establish a recursive property that gives the solution to an instance of the problem.
2. Develop a recursive algorithm as per recursive property
3. See if same instance of the problem is being solved again an again in recursive calls
4. Develop a memoized recursive algorithm
5. See the pattern in storing the data in the memory
6. Convert the memoized recursive algorithm into iterative algorithm
7. Optimize the iterative algorithm by using the storage as required (storage optimization)

  ^[0-9\-\+]{9,15}$ 

would match 0+0+0+0+0+0, or 000000000, etc.

  (\-?[0-9]){7}

would match a specific number of digits with optional hyphens in any position among them.

What is this +077 format supposed to be?

It's not a valid format. No country codes begin with 0.

The digits after the + should usually be a country code, 1 to 3 digits long.

Allowing for "+" then country code CC, then optional hyphen, then "0" plus two digits, then hyphens and digits for next seven digits, try:

  ^\+CC\-?0[1-9][0-9](\-?[0-9]){7}$

Oh, and {3,3} is redundant, simplifes to {3}.

It may not help you much, but on my (Ubuntu) machine I have a file /etc/services in which at least the ports used/reserved by some of the apps are given. These are the standard ports for those apps.

No guarantees that these are running, just the default ports these apps use (so you should not use them if possible).

There are slightly more than 500 ports defined, about half UDP and half TCP.

The files are made using information by IANA, see IANA Assigned port numbers.

Yes, it is possible by using a simple custom pipe. Advantage of using custom pipe is if we need to update the date format in future, we can go and update a single file.

import { Pipe, PipeTransform } from '@angular/core';
import { DatePipe } from '@angular/common';

@Pipe({
    name: 'dateFormatPipe',
})
export class dateFormatPipe implements PipeTransform {
    transform(value: string) {
       var datePipe = new DatePipe("en-US");
        value = datePipe.transform(value, 'MMM-dd-yyyy');
        return value;
    }
}

{{currentDate | dateFormatPipe }}

You can always use this pipe anywhere , component, services etc

For example:

export class AppComponent {
  currentDate : any;
  newDate : any;
  constructor(){
    this.currentDate = new Date().getTime();
    let dateFormatPipeFilter = new dateFormatPipe();
    this.newDate = dateFormatPipeFilter.transform(this.currentDate);
    console.log(this.newDate);
}

Don't forget to import dependencies.

import { Component } from '@angular/core';
import {dateFormatPipe} from './pipes'

Custom Pipe examples and more info

To enable the same edmx to access multiple databases and database providers and vise versa I use the following technique:

1) Define a ConnectionManager:

public static class ConnectionManager
{
    public static string GetConnectionString(string modelName)
    {
        var resourceAssembly = Assembly.GetCallingAssembly();

        var resources = resourceAssembly.GetManifestResourceNames();

        if (!resources.Contains(modelName + ".csdl")
            || !resources.Contains(modelName + ".ssdl")
            || !resources.Contains(modelName + ".msl"))
        {
            throw new ApplicationException(
                    "Could not find connection resources required by assembly: "
                    + System.Reflection.Assembly.GetCallingAssembly().FullName);
        }

        var provider = System.Configuration.ConfigurationManager.AppSettings.Get(
                        "MyModelUnitOfWorkProvider");

        var providerConnectionString = System.Configuration.ConfigurationManager.AppSettings.Get(
                        "MyModelUnitOfWorkConnectionString");

        string ssdlText;

        using (var ssdlInput = resourceAssembly.GetManifestResourceStream(modelName + ".ssdl"))
        {
            using (var textReader = new StreamReader(ssdlInput))
            {
                ssdlText = textReader.ReadToEnd();
            }
        }

        var token = "Provider=\"";
        var start = ssdlText.IndexOf(token);
        var end = ssdlText.IndexOf('"', start + token.Length);
        var oldProvider = ssdlText.Substring(start, end + 1 - start);

        ssdlText = ssdlText.Replace(oldProvider, "Provider=\"" + provider + "\"");

        var tempDir = Environment.GetEnvironmentVariable("TEMP") + '\\' + resourceAssembly.GetName().Name;
        Directory.CreateDirectory(tempDir);

        var ssdlOutputPath = tempDir + '\\' + Guid.NewGuid() + ".ssdl";

        using (var outputFile = new FileStream(ssdlOutputPath, FileMode.Create))
        {
            using (var outputStream = new StreamWriter(outputFile))
            {
                outputStream.Write(ssdlText);
            }
        }

        var eBuilder = new EntityConnectionStringBuilder
        {
            Provider = provider,

            Metadata = "res://*/" + modelName + ".csdl"
                        + "|" + ssdlOutputPath
                        + "|res://*/" + modelName + ".msl",

            ProviderConnectionString = providerConnectionString
        };

        return eBuilder.ToString();
    }
}

2) Modify the T4 that creates your ObjectContext so that it will use the ConnectionManager:

public partial class MyModelUnitOfWork : ObjectContext
{
    public const string ContainerName = "MyModelUnitOfWork";
    public static readonly string ConnectionString
        = ConnectionManager.GetConnectionString("MyModel");

3) Add the following lines to App.Config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <connectionStrings>
    <add name="MyModelUnitOfWork" connectionString=... />
  </connectionStrings>
  <appSettings>
    <add key="MyModelUnitOfWorkConnectionString" value="data source=MyPc\SqlExpress;initial catalog=MyDB;integrated security=True;multipleactiveresultsets=True" />
    <add key="MyModelUnitOfWorkProvider" value="System.Data.SqlClient" />
  </appSettings>
</configuration>

The ConnectionManager will replace the ConnectionString and Provider to what ever is in the App.Config.

You can use the same ConnectionManager for all ObjectContexts (so they all read the same settings from App.Config), or edit the T4 so it creates one ConnectionManager for each (in its own namespace), so that each reads separate settings.

You should put the input for the last name into the same div where you have the first name.

<div>
    <label for="username">First Name</label>
    <input id="user_first_name" name="user[first_name]" size="30" type="text" />
    <input id="user_last_name" name="user[last_name]" size="30" type="text" />
</div>

Then, in your CSS give your #user_first_name and #user_last_name height and float them both to the left. For example:

#user_first_name{
    max-width:100px; /*max-width for responsiveness*/
    float:left;
}

#user_lastname_name{
    max-width:100px;
    float:left;
}

Try this.

EditText text = (EditText)findViewById(R.id.edittext1);
String  str = text.getText().toString().trim();

This can't be done in just HTML (with form elements into option elements).

Or you can just use a standard select multiple field.

<select multiple>
  <option value="a">a</option>
  <option value="b">b</option>
  <option value="c">c</option>
</select>

Wait!

There is a way to retrieve the password by using Brute-Force attack, have a look at the following tool from codeproject Retrieve SQL Server Password

How to use the tool to retrieve the password

To Retrieve the password of SQL Server user,run the following query in SQL Query Analyzer

"Select Password from SysxLogins Where Name = 'XXXX'" Where XXXX is the user

name for which you want to retrieve password.Copy the password field (Hashed Code) and

paste here (in Hashed code Field) and click on start button to retrieve

I checked the tool on SQLServer 2000 and it's working fine.

"The above text file used has 3 lines of 4 elements separated by commas. The variable numLines prints out as '4' not '3'. So, len(myLines) is returning the number of elements in each list not the length of the list of lists."

It sounds like you're reading in a .csv with 3 rows and 4 columns. If this is the case, you can find the number of rows and lines by using the .split() method:

text = open("filetest.txt", "r").read()
myRows = text.split("\n")      #this method tells Python to split your filetest object each time it encounters a line break 
print len(myRows)              #will tell you how many rows you have
for row in myRows:
  myColumns = row.split(",")   #this method will consider each of your rows one at a time. For each of those rows, it will split that row each time it encounters a comma.  
  print len(myColumns)         #will tell you, for each of your rows, how many columns that row contains

Use dev.new(). (See this related question.)

plot(1:10)
dev.new(width=5, height=4)
plot(1:20)

To be more specific which units are used:

dev.new(width=5, height=4, unit="in")
plot(1:20)
dev.new(width = 550, height = 330, unit = "px")
plot(1:15)

edit additional argument for Rstudio (May 2020), (thanks user Soren Havelund Welling)

For Rstudio, add dev.new(width=5,height=4,noRStudioGD = TRUE)

You can use list slicing to archive your goal:

n = 5
mylist = [1,2,3,4,5,6,7,8,9]
newlist = mylist[n:]
print newlist

Outputs:

[6, 7, 8, 9]

Or del if you only want to use one list:

n = 5
mylist = [1,2,3,4,5,6,7,8,9]
del mylist[:n]
print mylist

Outputs:

[6, 7, 8, 9]

I did the redistributable repair thing, but for me it worked after I installed Office365.

(for me it also was the last failing package on the list).

Recompile without optimizations (-O0 on gcc).

Little twist to kirill_igum's answer, and you can easily count the number of columns of any certain row you want, which was why I've come to this question, even though the question is asking for the whole file. (Though if your file has same columns in each line this also still works of course):

head -2 file |tail -1 |tr '\t' '\n' |wc -l

Gives the number of columns of row 2. Replace 2 with 55 for example to get it for row 55.

-bash-4.2$ cat file
1       2       3
1       2       3       4
1       2
1       2       3       4       5

-bash-4.2$ head -1 file |tail -1 |tr '\t' '\n' |wc -l
3
-bash-4.2$ head -4 file |tail -1 |tr '\t' '\n' |wc -l
5

Code above works if your file is separated by tabs, as we define it to "tr". If your file has another separator, say commas, you can still count your "columns" using the same trick by simply changing the separator character "t" to ",":

-bash-4.2$ cat csvfile
1,2,3,4
1,2
1,2,3,4,5
-bash-4.2$ head -2 csvfile |tail -1 |tr '\,' '\n' |wc -l
2

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]?
{

    let delete = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "DELETE"){(UITableViewRowAction,NSIndexPath) -> Void in

        print("What u want while Pressed delete")
    }
    let edit = UITableViewRowAction(style: UITableViewRowActionStyle.Normal, title: "EDIT"){(UITableViewRowAction,NSIndexPath) -> Void in

        print("What u want while Pressed Edit")
    }

    edit.backgroundColor = UIColor.blackColor()
    return [delete,edit]
}

Have you installed a different version JRE after , while using previous version of JRE in Eclipse .

if Not than :

1. Right click on your project -> Build Path -> Configure Build Path
2. Go to 'Libraries' tab
3. Add Library -> JRE System Library -> Next -> Workspace default JRE (or you can Choose Alternate JRE form your System) -> Finish

if Yes than .

1. Right click on your project -> Build Path -> Configure Build Path
2. Go to 'Libraries' tab
3. Remove Previous Version
4. Add Library -> JRE System Library -> Next -> Workspace default JRE (or you can Choose Alternate JRE from your System) -> Finish

With Kotlin it is as simple as:

yourString.take(10)

Returns a string containing the first n characters from this string, or the entire string if this string is shorter.

Documentation

A total cludge.. but hey it works !

$numpart = explode(".", $sumnum); 

if ((exists($numpart[1]) && ($numpart[1] > 0 )){
//    it's a decimal that is greater than zero
} else {
// its not a decimal, or the decimal is zero
}

check out jquery ui 1.8.5 it's available here http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js and it has the new button for dialog ui implementation

I used this. Similar idea to other answers, but didn't see the exact approach anywhere :)

System.out.println(Integer.toBinaryString((b & 0xFF) + 0x100).substring(1));

0xFF is 255, or 11111111 (max value for an unsigned byte). 0x100 is 256, or 100000000

The & upcasts the byte to an integer. At that point, it can be anything from 0-255 (00000000 to 11111111, I excluded the leading 24 bits). + 0x100 and .substring(1) ensure there will be leading zeroes.

I timed it compared to João Silva's answer, and this is over 10 times faster. http://ideone.com/22DDK1 I didn't include Pshemo's answer as it doesn't pad properly.

In the codebase I'm working with (1 million + lines of code) we had a problem with long startup times, around 60 seconds. We were getting 12000+ FactoryBeanNotInitializedException.

What I did was set a conditional breakpoint in AbstractBeanFactory#doGetBean

catch (BeansException ex) {
   // Explicitly remove instance from singleton cache: It might have been put there
   // eagerly by the creation process, to allow for circular reference resolution.
   // Also remove any beans that received a temporary reference to the bean.
   destroySingleton(beanName);
   throw ex;
}

where it does destroySingleton(beanName) I printed the exception with conditional breakpoint code:

   System.out.println(ex);
   return false;

Apparently this happens when FactoryBeans are involved in a cyclic dependency graph. We solved it by implementing ApplicationContextAware and InitializingBean and manually injecting the beans.

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class A implements ApplicationContextAware, InitializingBean{

    private B cyclicDepenency;
    private ApplicationContext ctx;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext)
            throws BeansException {
        ctx = applicationContext;
    }
    @Override
    public void afterPropertiesSet() throws Exception {
        cyclicDepenency = ctx.getBean(B.class);
    }

    public void useCyclicDependency()
    {
        cyclicDepenency.doSomething();
    }
}

This cut down the startup time to around 15 secs.

So don't always assume that spring can be good at solving these references for you.

For this reason I'd recommend disabling cyclic dependency resolution with AbstractRefreshableApplicationContext#setAllowCircularReferences(false) to prevent many future problems.

Paul's solution provides a simple, general solution.

The question asks for the "the fastest and simplest way". Let's address the fastest part too. We'll arrive at our final, fastest code in an iterative manner. Benchmarking each iteration can be found at the end of the answer.

All the solutions and the benchmarking code can be found on the Go Playground. The code on the Playground is a test file, not an executable. You have to save it into a file named XX_test.go and run it with

go test -bench . -benchmem

Foreword:

The fastest solution is not a go-to solution if you just need a random string. For that, Paul's solution is perfect. This is if performance does matter. Although the first 2 steps (Bytes and Remainder) might be an acceptable compromise: they do improve performance by like 50% (see exact numbers in the II. Benchmark section), and they don't increase complexity significantly.

Having said that, even if you don't need the fastest solution, reading through this answer might be adventurous and educational.

I. Improvements

1. Genesis (Runes)

As a reminder, the original, general solution we're improving is this:

func init() {
    rand.Seed(time.Now().UnixNano())
}

var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

func RandStringRunes(n int) string {
    b := make([]rune, n)
    for i := range b {
        b[i] = letterRunes[rand.Intn(len(letterRunes))]
    }
    return string(b)
}

2. Bytes

If the characters to choose from and assemble the random string contains only the uppercase and lowercase letters of the English alphabet, we can work with bytes only because the English alphabet letters map to bytes 1-to-1 in the UTF-8 encoding (which is how Go stores strings).

So instead of:

var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

we can use:

var letters = []bytes("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

Or even better:

const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

Now this is already a big improvement: we could achieve it to be a const (there are string constants but there are no slice constants). As an extra gain, the expression len(letters) will also be a const! (The expression len(s) is constant if s is a string constant.)

And at what cost? Nothing at all. strings can be indexed which indexes its bytes, perfect, exactly what we want.

Our next destination looks like this:

const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

func RandStringBytes(n int) string {
    b := make([]byte, n)
    for i := range b {
        b[i] = letterBytes[rand.Intn(len(letterBytes))]
    }
    return string(b)
}

3. Remainder

Previous solutions get a random number to designate a random letter by calling rand.Intn() which delegates to Rand.Intn() which delegates to Rand.Int31n().

This is much slower compared to rand.Int63() which produces a random number with 63 random bits.

So we could simply call rand.Int63() and use the remainder after dividing by len(letterBytes):

func RandStringBytesRmndr(n int) string {
    b := make([]byte, n)
    for i := range b {
        b[i] = letterBytes[rand.Int63() % int64(len(letterBytes))]
    }
    return string(b)
}

This works and is significantly faster, the disadvantage is that the probability of all the letters will not be exactly the same (assuming rand.Int63() produces all 63-bit numbers with equal probability). Although the distortion is extremely small as the number of letters 52 is much-much smaller than 1<<63 - 1, so in practice this is perfectly fine.

^{To make this understand easier: let's say you want a random number in the range of 0..5. Using 3 random bits, this would produce the numbers 0..1 with double probability than from the range 2..5. Using 5 random bits, numbers in range 0..1 would occur with 6/32 probability and numbers in range 2..5 with 5/32 probability which is now closer to the desired. Increasing the number of bits makes this less significant, when reaching 63 bits, it is negligible.}

4. Masking

Building on the previous solution, we can maintain the equal distribution of letters by using only as many of the lowest bits of the random number as many is required to represent the number of letters. So for example if we have 52 letters, it requires 6 bits to represent it: 52 = 110100b. So we will only use the lowest 6 bits of the number returned by rand.Int63(). And to maintain equal distribution of letters, we only "accept" the number if it falls in the range 0..len(letterBytes)-1. If the lowest bits are greater, we discard it and query a new random number.

Note that the chance of the lowest bits to be greater than or equal to len(letterBytes) is less than 0.5 in general (0.25 on average), which means that even if this would be the case, repeating this "rare" case decreases the chance of not finding a good number. After n repetition, the chance that we still don't have a good index is much less than pow(0.5, n), and this is just an upper estimation. In case of 52 letters the chance that the 6 lowest bits are not good is only (64-52)/64 = 0.19; which means for example that chances to not have a good number after 10 repetition is 1e-8.

So here is the solution:

const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
const (
    letterIdxBits = 6                    // 6 bits to represent a letter index
    letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
)

func RandStringBytesMask(n int) string {
    b := make([]byte, n)
    for i := 0; i < n; {
        if idx := int(rand.Int63() & letterIdxMask); idx < len(letterBytes) {
            b[i] = letterBytes[idx]
            i++
        }
    }
    return string(b)
}

5. Masking Improved

The previous solution only uses the lowest 6 bits of the 63 random bits returned by rand.Int63(). This is a waste as getting the random bits is the slowest part of our algorithm.

If we have 52 letters, that means 6 bits code a letter index. So 63 random bits can designate 63/6 = 10 different letter indices. Let's use all those 10:

const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
const (
    letterIdxBits = 6                    // 6 bits to represent a letter index
    letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
    letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
)

func RandStringBytesMaskImpr(n int) string {
    b := make([]byte, n)
    // A rand.Int63() generates 63 random bits, enough for letterIdxMax letters!
    for i, cache, remain := n-1, rand.Int63(), letterIdxMax; i >= 0; {
        if remain == 0 {
            cache, remain = rand.Int63(), letterIdxMax
        }
        if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
            b[i] = letterBytes[idx]
            i--
        }
        cache >>= letterIdxBits
        remain--
    }

    return string(b)
}

6. Source

The Masking Improved is pretty good, not much we can improve on it. We could, but not worth the complexity.

Now let's find something else to improve. The source of random numbers.

There is a crypto/rand package which provides a Read(b []byte) function, so we could use that to get as many bytes with a single call as many we need. This wouldn't help in terms of performance as crypto/rand implements a cryptographically secure pseudorandom number generator so it's much slower.

So let's stick to the math/rand package. The rand.Rand uses a rand.Source as the source of random bits. rand.Source is an interface which specifies a Int63() int64 method: exactly and the only thing we needed and used in our latest solution.

So we don't really need a rand.Rand (either explicit or the global, shared one of the rand package), a rand.Source is perfectly enough for us:

var src = rand.NewSource(time.Now().UnixNano())

func RandStringBytesMaskImprSrc(n int) string {
    b := make([]byte, n)
    // A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
    for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
        if remain == 0 {
            cache, remain = src.Int63(), letterIdxMax
        }
        if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
            b[i] = letterBytes[idx]
            i--
        }
        cache >>= letterIdxBits
        remain--
    }

    return string(b)
}

Also note that this last solution doesn't require you to initialize (seed) the global Rand of the math/rand package as that is not used (and our rand.Source is properly initialized / seeded).

One more thing to note here: package doc of math/rand states:

The default Source is safe for concurrent use by multiple goroutines.

So the default source is slower than a Source that may be obtained by rand.NewSource(), because the default source has to provide safety under concurrent access / use, while rand.NewSource() does not offer this (and thus the Source returned by it is more likely to be faster).

7. Utilizing strings.Builder

All previous solutions return a string whose content is first built in a slice ([]rune in Genesis, and []byte in subsequent solutions), and then converted to string. This final conversion has to make a copy of the slice's content, because string values are immutable, and if the conversion would not make a copy, it could not be guaranteed that the string's content is not modified via its original slice. For details, see How to convert utf8 string to []byte? and golang: []byte(string) vs []byte(*string).

Go 1.10 introduced strings.Builder. strings.Builder is a new type we can use to build contents of a string similar to bytes.Buffer. Internally it uses a []byte to build the content, and when we're done, we can obtain the final string value using its Builder.String() method. But what's cool in it is that it does this without performing the copy we just talked about above. It dares to do so because the byte slice used to build the string's content is not exposed, so it is guaranteed that no one can modify it unintentionally or maliciously to alter the produced "immutable" string.

So our next idea is to not build the random string in a slice, but with the help of a strings.Builder, so once we're done, we can obtain and return the result without having to make a copy of it. This may help in terms of speed, and it will definitely help in terms of memory usage and allocations.

func RandStringBytesMaskImprSrcSB(n int) string {
    sb := strings.Builder{}
    sb.Grow(n)
    // A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
    for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
        if remain == 0 {
            cache, remain = src.Int63(), letterIdxMax
        }
        if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
            sb.WriteByte(letterBytes[idx])
            i--
        }
        cache >>= letterIdxBits
        remain--
    }

    return sb.String()
}

Do note that after creating a new strings.Buidler, we called its Builder.Grow() method, making sure it allocates a big-enough internal slice (to avoid reallocations as we add the random letters).

8. "Mimicing" strings.Builder with package unsafe

strings.Builder builds the string in an internal []byte, the same as we did ourselves. So basically doing it via a strings.Builder has some overhead, the only thing we switched to strings.Builder for is to avoid the final copying of the slice.

strings.Builder avoids the final copy by using package unsafe:

// String returns the accumulated string.
func (b *Builder) String() string {
    return *(*string)(unsafe.Pointer(&b.buf))
}

The thing is, we can also do this ourselves, too. So the idea here is to switch back to building the random string in a []byte, but when we're done, don't convert it to string to return, but do an unsafe conversion: obtain a string which points to our byte slice as the string data.

This is how it can be done:

func RandStringBytesMaskImprSrcUnsafe(n int) string {
    b := make([]byte, n)
    // A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
    for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
        if remain == 0 {
            cache, remain = src.Int63(), letterIdxMax
        }
        if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
            b[i] = letterBytes[idx]
            i--
        }
        cache >>= letterIdxBits
        remain--
    }

    return *(*string)(unsafe.Pointer(&b))
}

(9. Using rand.Read())

Go 1.7 added a rand.Read() function and a Rand.Read() method. We should be tempted to use these to read as many bytes as we need in one step, in order to achieve better performance.

There is one small "problem" with this: how many bytes do we need? We could say: as many as the number of output letters. We would think this is an upper estimation, as a letter index uses less than 8 bits (1 byte). But at this point we are already doing worse (as getting the random bits is the "hard part"), and we're getting more than needed.

Also note that to maintain equal distribution of all letter indices, there might be some "garbage" random data that we won't be able to use, so we would end up skipping some data, and thus end up short when we go through all the byte slice. We would need to further get more random bytes, "recursively". And now we're even losing the "single call to rand package" advantage...

We could "somewhat" optimize the usage of the random data we acquire from math.Rand(). We may estimate how many bytes (bits) we'll need. 1 letter requires letterIdxBits bits, and we need n letters, so we need n * letterIdxBits / 8.0 bytes rounding up. We can calculate the probability of a random index not being usable (see above), so we could request more that will "more likely" be enough (if it turns out it's not, we repeat the process). We can process the byte slice as a "bit stream" for example, for which we have a nice 3rd party lib: github.com/icza/bitio (disclosure: I'm the author).

But Benchmark code still shows we're not winning. Why is it so?

The answer to the last question is because rand.Read() uses a loop and keeps calling Source.Int63() until it fills the passed slice. Exactly what the RandStringBytesMaskImprSrc() solution does, without the intermediate buffer, and without the added complexity. That's why RandStringBytesMaskImprSrc() remains on the throne. Yes, RandStringBytesMaskImprSrc() uses an unsynchronized rand.Source unlike rand.Read(). But the reasoning still applies; and which is proven if we use Rand.Read() instead of rand.Read() (the former is also unsynchronzed).

II. Benchmark

All right, it's time for benchmarking the different solutions.

Moment of truth:

BenchmarkRunes-4                     2000000    723 ns/op   96 B/op   2 allocs/op
BenchmarkBytes-4                     3000000    550 ns/op   32 B/op   2 allocs/op
BenchmarkBytesRmndr-4                3000000    438 ns/op   32 B/op   2 allocs/op
BenchmarkBytesMask-4                 3000000    534 ns/op   32 B/op   2 allocs/op
BenchmarkBytesMaskImpr-4            10000000    176 ns/op   32 B/op   2 allocs/op
BenchmarkBytesMaskImprSrc-4         10000000    139 ns/op   32 B/op   2 allocs/op
BenchmarkBytesMaskImprSrcSB-4       10000000    134 ns/op   16 B/op   1 allocs/op
BenchmarkBytesMaskImprSrcUnsafe-4   10000000    115 ns/op   16 B/op   1 allocs/op

Just by switching from runes to bytes, we immediately have 24% performance gain, and memory requirement drops to one third.

Getting rid of rand.Intn() and using rand.Int63() instead gives another 20% boost.

Masking (and repeating in case of big indices) slows down a little (due to repetition calls): -22%...

But when we make use of all (or most) of the 63 random bits (10 indices from one rand.Int63() call): that speeds up big time: 3 times.

If we settle with a (non-default, new) rand.Source instead of rand.Rand, we again gain 21%.

If we utilize strings.Builder, we gain a tiny 3.5% in speed, but we also achieved 50% reduction in memory usage and allocations! That's nice!

Finally if we dare to use package unsafe instead of strings.Builder, we again gain a nice 14%.

Comparing the final to the initial solution: RandStringBytesMaskImprSrcUnsafe() is 6.3 times faster than RandStringRunes(), uses one sixth memory and half as few allocations. Mission accomplished.

You can also use time library:

import time

start = time.time()

# your code

# end

print(f'Time: {time.time() - start}')

@mikemaccana answer is useful.

And I also used https://github.com/ryanseddon/H5F. Found on http://microjs.com. It's some kind of polyfill and you can use it as follows (jQuery is used in example):

if ( $('form')[0].checkValidity() ) {
    // the form is valid
}

Please do This code - it worked

 AbstractApplicationContext context= new ClassPathXmlApplicationContext("spring-config.xml");

o/w: Delete main method class and recreate it while recreating please uncheck Inherited abstract method its worked

Just in case this helps anyone, when doing this from C# code behind I had to use a double escape character or I got an "unterminated string constant" JavaScript error:

ScriptManager.RegisterStartupScript(this, this.GetType(), "scriptName", "alert(\"Line 1.\\n\\nLine 2.\");", true);

I only had one model i wanted to use, so i ended up with the following code:

var JsonImageModel = Newtonsoft.Json.JsonConvert.SerializeObject(Images, new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });

puts true ? "true" : "false"
=> "true"


puts false ? "true" : "false"
=> "false"

If you want to save time, just use two UIViews on top of each other, the one at the back being the border color, and the one in front smaller, giving the bordered effect. I don't think this is an elegant solution either, but if Apple cared a little more then you shouldn't have to do this.

The essential idea here is to select the data you want to sum, and then sum them. This selection of data can be done in several different ways, a few of which are shown below.

Boolean indexing

Arguably the most common way to select the values is to use Boolean indexing.

With this method, you find out where column 'a' is equal to 1 and then sum the corresponding rows of column 'b'. You can use loc to handle the indexing of rows and columns:

>>> df.loc[df['a'] == 1, 'b'].sum()
15

The Boolean indexing can be extended to other columns. For example if df also contained a column 'c' and we wanted to sum the rows in 'b' where 'a' was 1 and 'c' was 2, we'd write:

df.loc[(df['a'] == 1) & (df['c'] == 2), 'b'].sum()

Query

Another way to select the data is to use query to filter the rows you're interested in, select column 'b' and then sum:

>>> df.query("a == 1")['b'].sum()
15

Again, the method can be extended to make more complicated selections of the data:

df.query("a == 1 and c == 2")['b'].sum()

Note this is a little more concise than the Boolean indexing approach.

Groupby

The alternative approach is to use groupby to split the DataFrame into parts according to the value in column 'a'. You can then sum each part and pull out the value that the 1s added up to:

>>> df.groupby('a')['b'].sum()[1]
15

This approach is likely to be slower than using Boolean indexing, but it is useful if you want check the sums for other values in column a:

>>> df.groupby('a')['b'].sum()
a
1    15
2     8

You can check Date Mutators: https://laravel.com/docs/5.3/eloquent-mutators#date-mutators

You need set in your User model column from_date in $dates array and then you can change format in $dateFormat

The another option is also put this method to your User model:

public function getFromDateAttribute($value) {
    return \Carbon\Carbon::parse($value)->format('d-m-Y');
}

and then in view if you run {{ $user->from_date }} you will be see format that you want.

JSONObject params = new JSONObject();
try {
   params.put(key, val);
}catch (JSONException e){
   e.printStackTrace();
}

this is how i pass "params"(JSONObject) through POST

connection.getOutputStream().write(params.toString().getBytes("UTF-8"));

string.join the list values separated by commas, and use the format operator to form a query string.

myquery = "select name from studens where id in (%s)" % ",".join(map(str,mylist))

(Thanks, blair-conrad)

There are many way to do the string aggregation, but the easiest is a user defined function. Try this for a way that does not require a function. As a note, there is no simple way without the function.

This is the shortest route without a custom function: (it uses the ROW_NUMBER() and SYS_CONNECT_BY_PATH functions )

SELECT questionid,
       LTRIM(MAX(SYS_CONNECT_BY_PATH(elementid,','))
       KEEP (DENSE_RANK LAST ORDER BY curr),',') AS elements
FROM   (SELECT questionid,
               elementid,
               ROW_NUMBER() OVER (PARTITION BY questionid ORDER BY elementid) AS curr,
               ROW_NUMBER() OVER (PARTITION BY questionid ORDER BY elementid) -1 AS prev
        FROM   emp)
GROUP BY questionid
CONNECT BY prev = PRIOR curr AND questionid = PRIOR questionid
START WITH curr = 1;