My activity calls finish() (which doesn't make it finish immediately, but will do eventually) and calls Google Street Viewer. When I debug it on Eclipse, my connection to the app breaks when Street Viewer is called, which I understand as the (whole) application being closed, supposedly to free up memory (as a single activity being finished shouldn't cause this behavior). Nevertheless, I'm able to save state in a Bundle via onSaveInstanceState() and restore it in the onCreate() method of the next activity in the stack. Either by using a static singleton or subclassing Application I face the application closing and losing state (unless I save it in a Bundle). So from my experience they are the same with regards to state preservation. I noticed that the connection is lost in Android 4.1.2 and 4.2.2 but not on 4.0.7 or 3.2.4, which in my understanding suggests that the memory recovery mechanism has changed at some point.

What about just using a global variable within your library, like so?

single.dart:

library singleton;

var Singleton = new Impl();

class Impl {
  int i;
}

main.dart:

import 'single.dart';

void main() {
  var a = Singleton;
  var b = Singleton;
  a.i = 2;
  print(b.i);
}

Or is this frowned upon?

The singleton pattern is necessary in Java where the concept of globals doesn't exist, but it seems like you shouldn't need to go the long way around in Dart.

As has, to some extent, been mentioned before, an enum is a java class with the special condition that its definition must start with at least one "enum constant".

Apart from that, and that enums cant can't be extended or used to extend other classes, an enum is a class like any class and you use it by adding methods below the constant definitions:

public enum MySingleton {
    INSTANCE;

    public void doSomething() { ... }

    public synchronized String getSomething() { return something; }

    private String something;
}

You access the singleton's methods along these lines:

MySingleton.INSTANCE.doSomething();
String something = MySingleton.INSTANCE.getSomething();

The use of an enum, instead of a class, is, as has been mentioned in other answers, mostly about a thread-safe instantiation of the singleton and a guarantee that it will always only be one copy.

And, perhaps, most importantly, that this behavior is guaranteed by the JVM itself and the Java specification.

Here's a section from the Java specification on how multiple instances of an enum instance is prevented:

An enum type has no instances other than those defined by its enum constants. It is a compile-time error to attempt to explicitly instantiate an enum type. The final clone method in Enum ensures that enum constants can never be cloned, and the special treatment by the serialization mechanism ensures that duplicate instances are never created as a result of deserialization. Reflective instantiation of enum types is prohibited. Together, these four things ensure that no instances of an enum type exist beyond those defined by the enum constants.

Worth noting is that after the instantiation any thread-safety concerns must be handled like in any other class with the synchronized keyword etc.

answer suggested by rakesh is great but still with some discription Singleton in Android is the same as Singleton in Java: The Singleton design pattern addresses all of these concerns. With the Singleton design pattern you can:

1) Ensure that only one instance of a class is created

2) Provide a global point of access to the object

3) Allow multiple instances in the future without affecting a singleton class's clients

A basic Singleton class example:

public class MySingleton
{
    private static MySingleton _instance;

    private MySingleton()
    {

    }

    public static MySingleton getInstance()
    {
        if (_instance == null)
        {
            _instance = new MySingleton();
        }
        return _instance;
    }
}

The Real One and Modern way to make Singleton Pattern is:

<?php

/**
 * Singleton Pattern.
 * 
 * Modern implementation.
 */
class Singleton
{
    /**
     * Call this method to get singleton
     */
    public static function instance()
    {
      static $instance = false;
      if( $instance === false )
      {
        // Late static binding (PHP 5.3+)
        $instance = new static();
      }

      return $instance;
    }

    /**
     * Make constructor private, so nobody can call "new Class".
     */
    private function __construct() {}

    /**
     * Make clone magic method private, so nobody can clone instance.
     */
    private function __clone() {}

    /**
     * Make sleep magic method private, so nobody can serialize instance.
     */
    private function __sleep() {}

    /**
     * Make wakeup magic method private, so nobody can unserialize instance.
     */
    private function __wakeup() {}

}

So now you can use it like.

<?php

/**
 * Database.
 *
 * Inherited from Singleton, so it's now got singleton behavior.
 */
class Database extends Singleton {

  protected $label;

  /**
   * Example of that singleton is working correctly.
   */
  public function setLabel($label)
  {
    $this->label = $label;
  }

  public function getLabel()
  {
    return $this->label;
  }

}

// create first instance
$database = Database::instance();
$database->setLabel('Abraham');
echo $database->getLabel() . PHP_EOL;

// now try to create other instance as well
$other_db = Database::instance();
echo $other_db->getLabel() . PHP_EOL; // Abraham

$other_db->setLabel('Priler');
echo $database->getLabel() . PHP_EOL; // Priler
echo $other_db->getLabel() . PHP_EOL; // Priler

As you see this realization is lot more flexible.

This is the simplest way

class YourSingletoneClass {
  private static instance: YourSingletoneClass;

  private constructor(public ifYouHaveAnyParams: string) {

  }
  static getInstance() {
    if(!YourSingletoneClass.instance) {
      YourSingletoneClass.instance = new YourSingletoneClass('If you have any params');
    }
    return YourSingletoneClass.instance;
  }
}

If some variables are stored in sqlite and you must use them in most activities in your app. then Application maybe the best way to achieve it. Query the variables from database when application started and store them in a field. Then you can use these variables in your activities.

So find the right way, and there is no best way.

Simple singleton class, This must be your header class file

#ifndef SC_SINGLETON_CLASS_H
#define SC_SINGLETON_CLASS_H

class SingletonClass
{
    public:
        static SingletonClass* Instance()
        {
           static SingletonClass* instance = new SingletonClass();
           return instance;
        }

        void Relocate(int X, int Y, int Z);

    private:
        SingletonClass();
        ~SingletonClass();
};

#define sSingletonClass SingletonClass::Instance()

#endif

Access your singleton like this:

sSingletonClass->Relocate(1, 2, 5);

You can also use static code block to instantiate the instance at class load and prevent the thread synchronization issues.

public class MySingleton {

  private static final MySingleton instance;

  static {
     instance = new MySingleton();
  }

  private MySingleton() {
  }

  public static MySingleton getInstance() {
    return instance;
  }

}

There is more than one way to skin a cat :) Depending on your taste or specific need you can apply any of the proposed solutions. I personally go for Christian C. Salvadó's first solution whenever possible (when you don't need privacy).

Since the question was about the simplest and cleanest, that's the winner. Or even:

var myInstance = {}; // Done!

This (quote from my blog)...

var SingletonClass = new function() {
    this.myFunction() {
        // Do stuff
    }
    this.instance = 1;
}

doesn't make much sense (my blog example doesn't either) because it doesn't need any private variables, so it's pretty much the same as:

var SingletonClass = {
    myFunction: function () {
        // Do stuff
    },
    instance: 1
}

Example with a static class

public class Any {

    private static Any instance = new Any();

    private Singleton() {
        System.out.println("creating");
    }
}

with singleton patterns only exist one instance:

public class Singleton {

    private static Singleton instance = new Singleton();

    private Singleton() {
        System.out.println("creating");
        if (instance != null) {
            throw new RuntimeException("Imposible create a new instance ");
        }
    }
}

"singleton" in spring is using bean factory get instance, then cache it; which singleton design pattern is strictly, the instance can only be retrieved from static get method, and the object can never be publicly instantiated.

Why use a constructor and prototyping for a single object?

The above is equivalent to:

var earth= {
    someMethod: function () {
        if (console && console.log)
            console.log('some method');                             
    }
};
privateFunction1();
privateFunction2();

return {
    Person: Constructors.Person,
    PlanetEarth: earth
};

I use Singletons as an interview test.

When I ask a developer to name some design patterns, if all they can name is Singleton, they're not hired.

Singletons solve one (and only one) problem.

Resource Contention.

If you have some resource that

(1) can only have a single instance, and

(2) you need to manage that single instance,

you need a singleton.

There aren't many examples. A log file is the big one. You don't want to just abandon a single log file. You want to flush, sync and close it properly. This is an example of a single shared resource that has to be managed.

It's rare that you need a singleton. The reason they're bad is that they feel like a global and they're a fully paid up member of the GoF Design Patterns book.

When you think you need a global, you're probably making a terrible design mistake.

? singleton method is a method that is defined only for a single object.

Example:

class SomeClass
  class << self
    def test
    end
  end
end

test_obj = SomeClass.new

def test_obj.test_2
end

class << test_obj
  def test_3
  end
end

puts "Singleton's methods of SomeClass"
puts SomeClass.singleton_methods
puts '------------------------------------------'
puts "Singleton's methods of test_obj"
puts test_obj.singleton_methods

Singleton's methods of SomeClass

test

Singleton's methods of test_obj

test_2

test_3

Performing the lock is terribly expensive when compared to the simple pointer check instance != null.

The pattern you see here is called double-checked locking. Its purpose is to avoid the expensive lock operation which is only going to be needed once (when the singleton is first accessed). The implementation is such because it also has to ensure that when the singleton is initialized there will be no bugs resulting from thread race conditions.

Think of it this way: a bare null check (without a lock) is guaranteed to give you a correct usable answer only when that answer is "yes, the object is already constructed". But if the answer is "not constructed yet" then you don't have enough information because what you really wanted to know is that it's "not constructed yet and no other thread is intending to construct it shortly". So you use the outer check as a very quick initial test and you initiate the proper, bug-free but "expensive" procedure (lock then check) only if the answer is "no".

The above implementation is good enough for most cases, but at this point it's a good idea to go and read Jon Skeet's article on singletons in C# which also evaluates other alternatives.

This is not quite a singleton, but may be something that could fix your problem.

public class KamilManager {

  private static KamilManager sharedInstance;

  /**
   * This method cannot be called before calling KamilManager constructor or else
   * it will bomb out.
   * @return
   */
  public static KamilManager getInstanceAfterInitialized() {
    if(sharedInstance == null)
        throw new RuntimeException("You must instantiate KamilManager once, before calling this method");

    return sharedInstance;
}

  public KamilManager(Context context, KamilConfig KamilConfig) {
    //Set whatever you need to set here then call:
  s  haredInstance = this;
  }
}

Thread Safe Singleton without using locks and no lazy instantiation.

This implementation has a static constructor, so it executes only once per Application Domain.

public sealed class Singleton
{

    static Singleton(){}

    private Singleton(){}

    public static Singleton Instance { get; } = new Singleton();

}

A Singleton candidate must satisfy three requirements:

• controls concurrent access to a shared resource.
• access to the resource will be requested from multiple, disparate parts of the system.
• there can be only one object.

If your proposed Singleton has only one or two of these requirements, a redesign is almost always the correct option.

For example, a printer spooler is unlikely to be called from more than one place (the Print menu), so you can use mutexes to solve the concurrent access problem.

A simple logger is the most obvious example of a possibly-valid Singleton, but this can change with more complex logging schemes.

Here is what is going on.

First, the only global variables Python really has are module-scoped variables. You cannot make a variable that is truly global; all you can do is make a variable in a particular scope. (If you make a variable inside the Python interpreter, and then import other modules, your variable is in the outermost scope and thus global within your Python session.)

All you have to do to make a module-global variable is just assign to a name.

Imagine a file called foo.py, containing this single line:

X = 1

Now imagine you import it.

import foo
print(foo.X)  # prints 1

However, let's suppose you want to use one of your module-scope variables as a global inside a function, as in your example. Python's default is to assume that function variables are local. You simply add a global declaration in your function, before you try to use the global.

def initDB(name):
    global __DBNAME__  # add this line!
    if __DBNAME__ is None: # see notes below; explicit test for None
        __DBNAME__ = name
    else:
        raise RuntimeError("Database name has already been set.")

By the way, for this example, the simple if not __DBNAME__ test is adequate, because any string value other than an empty string will evaluate true, so any actual database name will evaluate true. But for variables that might contain a number value that might be 0, you can't just say if not variablename; in that case, you should explicitly test for None using the is operator. I modified the example to add an explicit None test. The explicit test for None is never wrong, so I default to using it.

Finally, as others have noted on this page, two leading underscores signals to Python that you want the variable to be "private" to the module. If you ever do an import * from mymodule, Python will not import names with two leading underscores into your name space. But if you just do a simple import mymodule and then say dir(mymodule) you will see the "private" variables in the list, and if you explicitly refer to mymodule.__DBNAME__ Python won't care, it will just let you refer to it. The double leading underscores are a major clue to users of your module that you don't want them rebinding that name to some value of their own.

It is considered best practice in Python not to do import *, but to minimize the coupling and maximize explicitness by either using mymodule.something or by explicitly doing an import like from mymodule import something.

EDIT: If, for some reason, you need to do something like this in a very old version of Python that doesn't have the global keyword, there is an easy workaround. Instead of setting a module global variable directly, use a mutable type at the module global level, and store your values inside it.

In your functions, the global variable name will be read-only; you won't be able to rebind the actual global variable name. (If you assign to that variable name inside your function it will only affect the local variable name inside the function.) But you can use that local variable name to access the actual global object, and store data inside it.

You can use a list but your code will be ugly:

__DBNAME__ = [None] # use length-1 list as a mutable

# later, in code:  
if __DBNAME__[0] is None:
    __DBNAME__[0] = name

A dict is better. But the most convenient is a class instance, and you can just use a trivial class:

class Box:
    pass

__m = Box()  # m will contain all module-level values
__m.dbname = None  # database name global in module

# later, in code:
if __m.dbname is None:
    __m.dbname = name

(You don't really need to capitalize the database name variable.)

I like the syntactic sugar of just using __m.dbname rather than __m["DBNAME"]; it seems the most convenient solution in my opinion. But the dict solution works fine also.

With a dict you can use any hashable value as a key, but when you are happy with names that are valid identifiers, you can use a trivial class like Box in the above.

I will recommend an elegant solution using metaclasses

class Singleton(type): 
    # Inherit from "type" in order to gain access to method __call__
    def __init__(self, *args, **kwargs):
        self.__instance = None # Create a variable to store the object reference
        super().__init__(*args, **kwargs)

    def __call__(self, *args, **kwargs):
        if self.__instance is None:
            # if the object has not already been created
            self.__instance = super().__call__(*args, **kwargs) # Call the __init__ method of the subclass (Spam) and save the reference
            return self.__instance
        else:
            # if object (Spam) reference already exists; return it
            return self.__instance

class Spam(metaclass=Singleton):
    def __init__(self, x):
        print('Creating Spam')
        self.x = x


if __name__ == '__main__':
    spam = Spam(100)
    spam2 = Spam(200)

Output:

Creating Spam

As you can see from the output, only one object is instantiated

You can override the __new__ method like this:

class Singleton(object):
    _instance = None
    def __new__(cls, *args, **kwargs):
        if not cls._instance:
            cls._instance = super(Singleton, cls).__new__(
                                cls, *args, **kwargs)
        return cls._instance


if __name__ == '__main__':
    s1 = Singleton()
    s2 = Singleton()
    if (id(s1) == id(s2)):
        print "Same"
    else:
        print "Different"

I usually use code roughly similar to that in Ben Hoffstein's answer (which I also got out of Wikipedia). I use it for the reasons stated by Chris Hanson in his comment.

However, sometimes I have a need to place a singleton into a NIB, and in that case I use the following:

@implementation Singleton

static Singleton *singleton = nil;

- (id)init {
    static BOOL initialized = NO;
    if (!initialized) {
        self = [super init];
        singleton = self;
        initialized = YES;
    }
    return self;
}

+ (id)allocWithZone:(NSZone*)zone {
    @synchronized (self) {
        if (!singleton)
            singleton = [super allocWithZone:zone];     
    }
    return singleton;
}

+ (Singleton*)sharedSingleton {
    if (!singleton)
        [[Singleton alloc] init];
    return singleton;
}

@end

I leave the implementation of -retain (etc.) to the reader, although the above code is all you need in a garbage collected environment.

Version 1:

public class MySingleton {
    private static MySingleton instance = null;
    private MySingleton() {}
    public static synchronized MySingleton getInstance() {
        if(instance == null) {
            instance = new MySingleton();
        }
        return instance;
    }
}

Lazy loading, thread safe with blocking, low performance because of synchronized.

Version 2:

public class MySingleton {
    private MySingleton() {}
    private static class MySingletonHolder {
        public final static MySingleton instance = new MySingleton();
    }
    public static MySingleton getInstance() {
        return MySingletonHolder.instance;
    }
}

Lazy loading, thread safe with non-blocking, high performance.

In swift, you can create a singleton class following way:

class AppSingleton: NSObject {

    //Shared instance of class
    static let sharedInstance = AppSingleton()

    override init() {
        super.init()
    }
}

This :

$a = array ('zero','one','two', 'three');

foreach ($a as &$v) {

}

foreach ($a as $v) {
    echo $v.PHP_EOL;
}

is the same as

$a = array ('zero','one','two', 'three');

$v = &$a[3];

for ($i = 0; $i < 4; $i++) {
    $v = $a[$i];
    echo $v.PHP_EOL; 
}

OR

$a = array ('zero','one','two', 'three');

for ($i = 0; $i < 4; $i++) {
    $a[3] = $a[$i];
    echo $a[3].PHP_EOL; 
}

OR

$a = array ('zero','one','two', 'three');

$a[3] = $a[0];
echo $a[3].PHP_EOL;

$a[3] = $a[1]; 
echo $a[3].PHP_EOL;

$a[3] = $a[2];
echo $a[3].PHP_EOL;

$a[3] = $a[3]; 
echo $a[3].PHP_EOL;

Hi all I had the same issue that was being caused by a duplicate support version 4 file that I had included while trying to get parse integrated. Deleted the extra inclusion from the libs directory and it works fine now!

It's a warning, not an error. It occurs because fsevents is an optional dependency, used only when project is run on macOS environment (the package provides 'Native Access to Mac OS-X FSEvents').

And since you're running your project on Windows, fsevents is skipped as irrelevant.

There is a PR to fix this behaviour here: https://github.com/npm/cli/pull/169

I ran into this problem too, a lot of people seem to recommend force reloading your page, which won't fix the issue in cases such as if you're running it on a server. I believe the optimal solution in this scenario is to timestamp your css.

1. This is how I do it in my Django template:

<link rel="stylesheet" href="{% static 'home/radioStyles.css' %}?{% now 'U' %}" type="text/css"/>

Where adding ?{% now 'U' %} to the end of your css file would fix this issue.

2. How you would do it with just CSS (hopefully someone edits this to a cleaner version, this looks a little janky but it does work, tested it):

<link rel="stylesheet" type="text/css" href="style.css?Wednesday 2nd February 2020 12PM" />

Where ?Wednesday 2nd February 2020 12PM (current date) seems to fix the issue, I also noticed just putting the time fixes it too.

The main points I like about DVCS are those :

1. You can commit broken things. It doesn't matter because other peoples won't see them until you publish. Publish time is different of commit time.
2. Because of this you can commit more often.
3. You can merge complete functionnality. This functionnality will have its own branch. All commits of this branch will be related to this functionnality. You can do it with a CVCS however with DVCS its the default.
4. You can search your history (find when a function changed )
5. You can undo a pull if someone screw up the main repository, you don't need to fix the errors. Just clear the merge.
6. When you need a source control in any directory do : git init . and you can commit, undoing changes, etc...
7. It's fast (even on Windows )

The main reason for a relatively big project is the improved communication created by the point 3. Others are nice bonuses.

I already had index.html in the WebContent folder but it was not showing up , finally i added the following piece of code in my projects web.xml and it started showing up

  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping> 

Local variables do not get default values. Their initial values are undefined without assigning values by some means. Before you can use local variables they must be initialized.

There is a big difference when you declare a variable at class level (as a member, i.e., as a field) and at the method level.

If you declare a field at the class level they get default values according to their type. If you declare a variable at the method level or as a block (means any code inside {}) do not get any values and remain undefined until somehow they get some starting values, i.e., some values assigned to them.

In Version 4.0.2 slightly different Just in processResults and in result :

    processResults: function (data) {
        return {
            results: $.map(data.items, function (item) {
                return {
                    text: item.tag_value,
                    id: item.tag_id
                }
            })
        };
    }

You must add data.items in result. items is Json name :

{
  "items": [
    {"id": 1,"name": "Tetris","full_name": "s9xie/hed"},
    {"id": 2,"name": "Tetrisf","full_name": "s9xie/hed"}
  ]
}

You want to use DateTimeOffset class.

var date = new DateTimeOffset(2009, 9, 1, 0, 0, 0, 0, new TimeSpan(0L));
var stringDate = date.ToString("u");

sorry I missed your original formatting with the miliseconds

var stringDate = date.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fff'Z'");

var eventdate = new Date("January 01, 2014 00:00:00");

function toSt(n) {
 s=""
 if(n<10) s+="0"
 return s+n.toString();
}

function countdown() {
 cl=document.clock;
 d=new Date();
 count=Math.floor((eventdate.getTime()-d.getTime())/1000);
 if(count<=0)
   {cl.days.value ="----";
    cl.hours.value="--";
    cl.mins.value="--";
    cl.secs.value="--";
    return;
  }
 cl.secs.value=toSt(count%60);
 count=Math.floor(count/60);
 cl.mins.value=toSt(count%60);
 count=Math.floor(count/60);
 cl.hours.value=toSt(count%24);
 count=Math.floor(count/24);
 cl.days.value=count;    

 setTimeout("countdown()",500);
}

Hello, I've a similar assignment which involved creating a Javascript Countdown Clock. Here's the code I used. Plug the above code between the < script language="Javascript" >< /script > tags. Keep in mind that just having this javascript won't do much if you don't have the html to display the clock. I'll leave writing the html to you. Design the clock however you wish.

You can find what you're looking for in the information schema: SQL Server 2005 System Tables and Views I think you need SQL Server 2005 or higher to use the approach described in this article, but a similar method can be used for earlier versions.

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
}

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"
    defaultConfig {
        applicationId "com.keshav.retroft2arrayinsidearrayexamplekeshav"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
 compile 'com.android.support:appcompat-v7:26.0.1'
    compile 'com.android.support:recyclerview-v7:26.0.1'
    compile 'com.android.support:cardview-v7:26.0.1'

You can use GetType - GetProperties - Linq Foreach:

obj.GetType().GetProperties().ToList().ForEach(p =>{
                                                        //p is each PropertyInfo
                                                        DoSomething(p);
                                                    });

Personally, I quite like the C++2011 approach because it neither requires you to use sizeof() nor to remember adjusting the array bounds if you ever change the array bounds (and you can define the relevant function in C++2003 if you want, too):

#include <iterator>
#include <vector>
int x[] = { 1, 2, 3, 4, 5 };
std::vector<int> v(std::begin(x), std::end(x));

Obviously, with C++2011 you might want to use initializer lists anyway:

std::vector<int> v({ 1, 2, 3, 4, 5 });

The solution from PSL will not work in Firefox. FF accepts event only as a formal parameter. So you have to find another way to identify the selected row. My solution is something like this:

...
$('#mySelector')
  .on('show.bs.modal', function(e) {
  var mid;


  if (navigator.userAgent.toLowerCase().indexOf('firefox') > -1) 
    mid = $(e.relatedTarget).data('id');
  else
    mid = $(event.target).closest('tr').data('id');

...

dblink() -- executes a query in a remote database

dblink executes a query (usually a SELECT, but it can be any SQL statement that returns rows) in a remote database.

When two text arguments are given, the first one is first looked up as a persistent connection's name; if found, the command is executed on that connection. If not found, the first argument is treated as a connection info string as for dblink_connect, and the indicated connection is made just for the duration of this command.

one of the good example:

SELECT * 
FROM   table1 tb1 
LEFT   JOIN (
   SELECT *
   FROM   dblink('dbname=db2','SELECT id, code FROM table2')
   AS     tb2(id int, code text);
) AS tb2 ON tb2.column = tb1.column;

Note: I am giving this information for future reference. Refrence

This following works better if you need to scroll to an arbitrary item in the list (rather than always to the bottom):

function scrollIntoView(element, container) {
  var containerTop = $(container).scrollTop(); 
  var containerBottom = containerTop + $(container).height(); 
  var elemTop = element.offsetTop;
  var elemBottom = elemTop + $(element).height(); 
  if (elemTop < containerTop) {
    $(container).scrollTop(elemTop);
  } else if (elemBottom > containerBottom) {
    $(container).scrollTop(elemBottom - $(container).height());
  }
}

For all smartphones and large screens use this format of media query

/* Smartphones (portrait and landscape) ----------- */

@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {
/* Styles */
}

/* Smartphones (landscape) ----------- */

@media only screen and (min-width : 321px) {
/* Styles */
}



/* Smartphones (portrait) ----------- */

@media only screen and (max-width : 320px) {
/* Styles */
}

/* iPads (portrait and landscape) ----------- */

@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) {
/* Styles */
}

/* iPads (landscape) ----------- */

@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape) {
/* Styles */
}

/* iPads (portrait) ----------- */

@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait) {
/* Styles */
}

/**********
iPad 3
**********/

@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape) and (-webkit-min-device-pixel-ratio : 2) {
/* Styles */
}

@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait) and (-webkit-min-device-pixel-ratio : 2) {
/* Styles */
}

/* Desktops and laptops ----------- */

@media only screen  and (min-width : 1224px) {
/* Styles */
}

/* Large screens ----------- */
@media only screen  and (min-width : 1824px) {
/* Styles */
}

/* iPhone 4 ----------- */

@media only screen and (min-device-width : 320px) and (max-device-width : 480px) and (orientation : landscape) and (-webkit-min-device-pixel-ratio : 2) {
/* Styles */
}

@media only screen and (min-device-width : 320px) and (max-device-width : 480px) and (orientation : portrait) and (-webkit-min-device-pixel-ratio : 2) {
/* Styles */
}

/* iPhone 5 ----------- */

@media only screen and (min-device-width: 320px) and (max-device-height: 568px) and (orientation : landscape) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

@media only screen and (min-device-width: 320px) and (max-device-height: 568px) and (orientation : portrait) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

/* iPhone 6 ----------- */

@media only screen and (min-device-width: 375px) and (max-device-height: 667px) and (orientation : landscape) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

@media only screen and (min-device-width: 375px) and (max-device-height: 667px) and (orientation : portrait) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

/* iPhone 6+ ----------- */

@media only screen and (min-device-width: 414px) and (max-device-height: 736px) and (orientation : landscape) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

@media only screen and (min-device-width: 414px) and (max-device-height: 736px) and (orientation : portrait) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

/* Samsung Galaxy S3 ----------- */

@media only screen and (min-device-width: 320px) and (max-device-height: 640px) and (orientation : landscape) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

@media only screen and (min-device-width: 320px) and (max-device-height: 640px) and (orientation : portrait) and (-webkit-device-pixel-ratio: 2){
/* Styles */
}

/* Samsung Galaxy S4 ----------- */
@media only screen and (min-device-width: 320px) and (max-device-height: 640px) and (orientation : landscape) and (-webkit-device-pixel-ratio: 3){
/* Styles */
}

@media only screen and (min-device-width: 320px) and (max-device-height: 640px) and (orientation : portrait) and (-webkit-device-pixel-ratio: 3){
/* Styles */
}

/* Samsung Galaxy S5 ----------- */

@media only screen and (min-device-width: 360px) and (max-device-height: 640px) and (orientation : landscape) and (-webkit-device-pixel-ratio: 3){
/* Styles */
}

@media only screen and (min-device-width: 360px) and (max-device-height: 640px) and (orientation : portrait) and (-webkit-device-pixel-ratio: 3){
/* Styles */
}

In my recent work with LINUX is one thing to be aware of is libraries. If you are using threads make sure any libraries you may use across threads are thread-safe. This burned me a couple of times. Notably libxml2 is not thread-safe out of the box. It can be compiled with thread safe but that is not what you get with aptitude install.

A slight tweak on @CPU-100's answer, for the local FQDN:

[System.Net.DNS]::GetHostByName($Null).HostName

It's was great if delete return the delete pair of the hash. I'm doing this:

hash = {a: 1, b: 2, c: 3}
{b: hash.delete(:b)} # => {:b=>2}
hash  # => {:a=>1, :c=>3} 

declare @MyNumber int
set @MyNumber = 123
select 'My number is ' + CAST(@MyNumber as nvarchar(20))

Cookies that 'expire at end of the session' expire unpredictably from the user's perspective!

On iOS with Safari they expire whenever you switch apps!

On Android with Chrome they don't expire when you close the browser.

On Windows desktop running Chrome they expire when you close the browser. That's not when you close your website's tab; its when you close all tabs. Nor do they expire if there are any other browser windows open. If users run web apps as windows they might not even know they are browser windows. So your cookie's life depends on what the user is doing with some apparently unrelated app.

For me, the server was expect HTTPS requests, but I didn't specify that in the URL. The hook would reach the server, but the body would be empty.

If I understand you correctly, you want to compose a multipart request manually from an HTTP/REST console. The multipart format is simple; a brief introduction can be found in the HTML 4.01 spec. You need to come up with a boundary, which is a string not found in the content, let’s say HereGoes. You set request header Content-Type: multipart/form-data; boundary=HereGoes. Then this should be a valid request body:

--HereGoes
Content-Disposition: form-data; name="myJsonString"
Content-Type: application/json

{"foo": "bar"}
--HereGoes
Content-Disposition: form-data; name="photo"
Content-Type: image/jpeg
Content-Transfer-Encoding: base64

<...JPEG content in base64...>
--HereGoes--

Sending raw POST requests can be sometimes more convenient. Below you can see post.js original example from PhantomJS

// Example using HTTP POST operation

var page = require('webpage').create(),
    server = 'http://posttestserver.com/post.php?dump',
    data = 'universe=expanding&answer=42';

page.open(server, 'post', data, function (status) {
    if (status !== 'success') {
        console.log('Unable to post!');
    } else {
        console.log(page.content);
    }
    phantom.exit();
});

The "accepted" answer to this question is both incorrect and myopic.

It is incorrect in that it will match strings like 0001, which is not a valid year.

It is myopic in that it will not match any values above 9999. Have we already forgotten the lessons of Y2K? Instead, use the regular expression:

^[1-9]\d{3,}$

If you need to match years in the past, in addition to years in the future, you could use this regular expression to match any positive integer:

^[1-9]\d*$

Even if you don't expect dates from the past, you may want to use this regular expression anyway, just in case someone invents a time machine and wants to take your software back with them.

Note: This regular expression will match all years, including those before the year 1, since they are typically represented with a BC designation instead of a negative integer. Of course, this convention could change over the next few millennia, so your best option is to match any integer—positive or negative—with the following regular expression:

^-?[1-9]\d*$

This is my final code .... (based on previous fixes, thank you big time for headstart, saved a lot of time experimenting). What bugged me was scrolling up, as well as scrolling down ... :)

it always makes me wonder how jquery can be elegant!!!

$(document).ready(function(){

    //run once
    var el=$('#scrolldiv');
    var originalelpos=el.offset().top; // take it where it originally is on the page

    //run on scroll
     $(window).scroll(function(){
        var el = $('#scrolldiv'); // important! (local)
        var elpos = el.offset().top; // take current situation
        var windowpos = $(window).scrollTop();
        var finaldestination = windowpos+originalelpos;
        el.stop().animate({'top':finaldestination},500);
     });

});

Whoops slip of the pen. I'd solve this: var moment = function(x) { return moment(x).locale('de'); } The other ways don't really seem to stick/hold under conditions (for me).

It's easier if you get these values into a list of tuples. To do this, you can use list slicing and the zip function.

data_in = [2010,2,2009,4,1989,8,2009,7]
data_pairs = zip(data_in[::2],data_in[1::2])

Zip takes an arbitrary number of lists, in this case the even and odd entries of data_in, and puts them together into a tuple.

Now we can use the setdefault method.

data_dict = {}
for x in data_pairs:
    data_dict.setdefault(x[0],[]).append(x[1])

setdefault takes a key and a default value, and returns either associated value, or if there is no current value, the default value. In this case, we will either get an empty or populated list, which we then append the current value to.

Update

As of 17th May 2017 the README of autoenv states that direnv is probably the better option and implies autoenv is no longer maintained.

Old answer

I wrote autoenv to do exactly this:

https://github.com/kennethreitz/autoenv

I couldn't figure why yet, but the createReadStream/pipe approach didn't work for me. I was trying to download a large CSV file (300MB+) and I got duplicated lines. It seemed a random issue. The final file size varied in each attempt to download it.

I ended up using another way, based on AWS JS SDK examples:

var s3 = new AWS.S3();
var params = {Bucket: 'myBucket', Key: 'myImageFile.jpg'};
var file = require('fs').createWriteStream('/path/to/file.jpg');

s3.getObject(params).
    on('httpData', function(chunk) { file.write(chunk); }).
    on('httpDone', function() { file.end(); }).
    send();

This way, it worked like a charm.

I won't expand the acronym yet again... but I will add some nuance to the other definition: you can store any data in a blob regardless of other byte interpretations they may have. Text can be stored in a blob, but you would be better off with a CLOB if you have that option.

There should be no differences between BLOBS across databases in the sense that after you have saved and retrieved the data it is unchanged.... how each database achieves that is a blackbox and thankfully almost without exception irrelevant. The manner of interacting with BLOBS, however can be very different since there are no specifications in SQL standards (or standards in the specifications?) for it. Usually you will have to invoke procedures/functions to save retrieve them, and limiting any query based on the contents of a BLOB is nearly impossible if not prohibited.

Among the other stuff enumerated as binary data, you can also store binary representations of text -> character codes with a given encoding... without actually knowing or specifying the encoding used.

BLOBS are the lowest common denominators of storage formats.

Add /y to the command line of xcopy:

Example:

xcopy /y c:\mmyinbox\test.doc C:\myoutbox

Equal height columns is the default behaviour for Bootstrap 4 grids.

.col { background: red; }_x000D_
.col:nth-child(odd) { background: yellow; }

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">_x000D_
_x000D_
<div class="container">_x000D_
  <div class="row">_x000D_
    <div class="col">_x000D_
      1 of 3_x000D_
    </div>_x000D_
    <div class="col">_x000D_
      1 of 3_x000D_
      <br>_x000D_
      Line 2_x000D_
      <br>_x000D_
      Line 3_x000D_
    </div>_x000D_
    <div class="col">_x000D_
      1 of 3_x000D_
    </div>_x000D_
  </div>_x000D_
</div>

The thing about margins is that you don't need to worry about the element's width.

Like when you give something {padding: 10px;}, you'll have to reduce the width of the element by 20px to keep the 'fit' and not disturb other elements around it.

So I generally start off by using paddings to get everything 'packed' and then use margins for minor tweaks.

Another thing to be aware of is that paddings are more consistent on different browsers and IE doesn't treat negative margins very well.

I was trying to select an area of svg with a rectangle and get all the elements from it. For this, element.getBoundingClientRect() worked perfectly for me. It returns current coordinates of svg elements regardless of whether svg is scaled or transformed.

Safer and faster (doubling capacity) version:

char *readline(char *prompt) {
  size_t size = 80;
  char *str = malloc(sizeof(char) * size);
  int c;
  size_t len = 0;
  printf("%s", prompt);
  while (EOF != (c = getchar()) && c != '\r' && c != '\n') {
    str[len++] = c;
    if(len == size) str = realloc(str, sizeof(char) * (size *= 2));
  }
  str[len++]='\0';
  return realloc(str, sizeof(char) * len);
}

Try this

"[A-Za-z0-9_-]+"

Should allow underscores and hyphens

If you are going to manage your memory manually, you have two cases:

1. I created the object (perhaps indirectly, by calling a function that allocates a new object), I use it (or a function I call uses it), then I free it.
2. Somebody gave me the reference, so I should not free it.

If you need to break any of these rules, please document it.

It is all about pointer ownership.

%reset seems to clear defined variables.

I would rather put my answer in How to flush output of print function? or in Python's print function that flushes the buffer when it's called?, but since they were marked as duplicates of this one (what I do not agree), I'll answer it here.

Since Python 3.3, print() supports the keyword argument "flush" (see documentation):

print('Hello World!', flush=True)

I needed a solution to convert columns to rows in Microsoft SQL Server, without knowing the colum names (used in trigger) and without dynamic sql (dynamic sql is too slow for use in a trigger).

I finally found this solution, which works fine:

SELECT
    insRowTbl.PK,
    insRowTbl.Username,
    attr.insRow.value('local-name(.)', 'nvarchar(128)') as FieldName,
    attr.insRow.value('.', 'nvarchar(max)') as FieldValue 
FROM ( Select      
          i.ID as PK,
          i.LastModifiedBy as Username,
          convert(xml, (select i.* for xml raw)) as insRowCol
       FROM inserted as i
     ) as insRowTbl
CROSS APPLY insRowTbl.insRowCol.nodes('/row/@*') as attr(insRow)

As you can see, I convert the row into XML (Subquery select i,* for xml raw, this converts all columns into one xml column)

Then I CROSS APPLY a function to each XML attribute of this column, so that I get one row per attribute.

Overall, this converts columns into rows, without knowing the column names and without using dynamic sql. It is fast enough for my purpose.

(Edit: I just saw Roman Pekar answer above, who is doing the same. I used the dynamic sql trigger with cursors first, which was 10 to 100 times slower than this solution, but maybe it was caused by the cursor, not by the dynamic sql. Anyway, this solution is very simple an universal, so its definitively an option).

I am leaving this comment at this place, because I want to reference this explanation in my post about the full audit trigger, that you can find here: https://stackoverflow.com/a/43800286/4160788

Actually you can use,

BigInteger sum= new BigInteger("12345");

for creating object for BigInteger class.But the problem here is,you cannot give a variable in the double quotes.So we have to use the valueOf() method and we have to store the answer in that sum again.So we will write,

sum= sum.add(BigInteger.valueOf(i));

white-space: nowrap is the correct solution but it will prevent any break in a line. If you only want to prevent line breaks between two elements it gets a bit more complicated:

<p>
    <span class="text">Some text</span>
    <span class="icon"></span>
</p>

To prevent breaks between the spans but to allow breaks between "Some" and "text" can be done by:

p {
    white-space: nowrap;
}

.text {
    white-space: normal;
}

That's good enough for Firefox. In Chrome you additionally need to replace the whitespace between the spans with an  . (Removing the whitespace doesn't work.)

This:

<table id="test">
      <tr  id="TEST1" >
          <td align="left" valign="middle"><div align="right">Contact</div></td>
          <td colspan="4" align="left" valign="middle">
          <input type="text" id="contact1" size="20" />  Number 
          <input type="text" id="number1" size="20" /> 
          </td>
          <td>
          <input type="button"  value="Button 1" id="contact1" /></td>
      </tr>


      <tr id="TEST2" >
          <td align="left" valign="middle"><div align="right">Contact</div></td>
          <td colspan="4" align="left" valign="middle">
          <input type="text" id="contact2" size="20" />  Number 
          <input type="text" id="number2" size="20" /> 
          </td>
          <td>
          <input type="button"  value="Button 1"  id="contact2" />
          </td> 
      </tr>

      <tr id="TEST3" >
          <td align="left" valign="middle"><div align="right">Contact</div></td>
          <td colspan="4" align="left" valign="middle">
          <input type="text" id="contact3" size="20" />  Number 
          <input type="text" id="number3" size="20" /> 
          </td>
          <td>
          <input type="button"  value="Button 1"  id="contact2" />
          </td> 
</tr>

and javascript:

$(function() {
  var bid, trid;
  $('#test tr').click(function() {
       trid = $(this).attr('id'); // table row ID 
       alert(trid);
  });

});

It worked here!

Uri path = Uri.fromFile(file );
Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(path , "application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
    startActivity(pdfIntent ); 
    }
catch (ActivityNotFoundException e) {
    Toast.makeText(EmptyBlindDocumentShow.this,
            "No Application available to viewPDF",
            Toast.LENGTH_SHORT).show();
    }  
}  

I have just compile it and it compiles fine without the implicit import, probably you're seeing a stale cache or something of your IDE.

Have you tried compiling from the command line?

I have the exact same version:

Probably you're thinking the warning is an error.

UPDATE

It looks like you have a Arrays.class file in the directory where you're trying to compile ( probably created before ). That's why the explicit import solves the problem. Try copying your source code to a clean new directory and try again. You'll see there is no error this time. Or, clean up your working directory and remove the Arrays.class

To cast, the actual object must be of a Type equal to or derived from the Type you are attempting to cast to...

or, to state it in the opposite way, the Type you are trying to cast it to must be the same as, or a base class of, the actual type of the object.

if your actual object is of type Baseclass, then you can't cast it to a derived class Type...

You can create a timeoutPromise wrapper

function timeoutPromise(timeout, err, promise) {
  return new Promise(function(resolve,reject) {
    promise.then(resolve,reject);
    setTimeout(reject.bind(null,err), timeout);
  });
}

You can then wrap any promise

timeoutPromise(100, new Error('Timed Out!'), fetch(...))
  .then(...)
  .catch(...)  

It won't actually cancel an underlying connection but will allow you to timeout a promise.
Reference

  1  

     select ename as name,
      2  sal as salary,
      3  dept,deptno,
      4   from (TABLE_NAME or SUBQUERY)
      5   emp, emp2,  dept
      6    where
      7   emp.deptno = dept.deptno and
      8   emp2.deptno = emp.deptno
      9*  order by dept.dname

 from (TABLE_NAME or SUBQUERY)
 *
ERROR at line 4:
ORA-00936: missing expression`  select ename as name,
 sal as salary,
 dept,deptno,
  from (TABLE_NAME or SUBQUERY)
  emp, emp2,  dept
   where
  emp.deptno = dept.deptno and
  emp2.deptno = emp.deptno
  order by dept.dname`

var match=Regex.Match(@"a99b",@"\d+");
if(match.Success)
{
    int val;
    if(int.TryParse(match.Value,out val))
    {
        //val is set
    }
}

The following should help

• realpath — Returns canonicalized absolute pathname
• is_writable — Tells whether the filename is writable
• unlink — Deletes a file

Run your filepath through realpath, then check if the returned path is writable and if so, unlink it.

Import moment js:

var fulldate = new Date(1370001284000);
var converted_date = moment(fulldate).format(");

1)

# netstat -lp|grep -i x
tcp        0      0 *:x11                   *:*                     LISTEN      2937/X          
tcp6       0      0 [::]:x11                [::]:*                  LISTEN      2937/X          
Active UNIX domain sockets (only servers)
unix  2      [ ACC ]     STREAM     LISTENING     8940     2937/X              @/tmp/.X11-unix/X0
unix  2      [ ACC ]     STREAM     LISTENING     8941     2937/X              /tmp/.X11-unix/X0
#

2) nmap

# nmap localhost|grep -i x
6000/tcp open  X11
#

You should form the command with the contents of the textboxes:

sql = "insert into Main (Firt Name, Last Name) values(" + textbox2.Text + "," + textbox3.Text+ ")";

This, of course, provided that you manage to open the connection correctly.

It would be helpful to know what's happening with your current code. If you are getting some error displayed in that message box, it would be great to know what it's saying.

You should also validate the inputs before actually running the command (i.e. make sure they don't contain malicious code...).

Using display:inline-block

#element1 {display:inline-block;margin-right:10px;} 
#element2 {display:inline-block;} 

Example

DateTime.Now.Add(-30)

Gives you the date 30 days back from now

I have been using MongoDB .NET driver for a little over a month now. If I were to do it using .NET driver, I would use Update method on the collection object. First, I will construct a query that will get me all the documents I am interested in and do an Update on the fields I want to change. Update in Mongo only affects the first document and to update all documents resulting from the query one needs to use 'Multi' update flag. Sample code follows...

var collection = db.GetCollection("Foo");
var query = Query.GTE("No", 1); // need to construct in such a way that it will give all 20K //docs.
var update = Update.Set("timestamp", datetime.UtcNow);
collection.Update(query, update, UpdateFlags.Multi);

Web.Config file:

<configuration>
 <system.net>
        <mailSettings>
            <smtp from="[email protected]">
                <network host="smtp.gmail.com" 
                 port="587" 
                 userName="[email protected]" 
                 password="yourpassword" 
                 enableSsl="true"/>
            </smtp>
        </mailSettings>
</system.net>
</configuration>

xargs is the most flexible solution for splitting output into command arguments.

It is also very human readable and easy to use due to its simple parameterisation.

Format is xargs -n $NUMLINES mycommand.

For example, to echo each individual line in a file /tmp/tmp.txt you'd do:

cat /tmp/tmp.txt | xargs -n 1 echo

Or to diff each successive pair of files listed as lines in a file of the above name you'd do:

cat /tmp/tmp.txt | xargs -n 2 diff

The -n 2 instructs xargs to consume and pass as separate arguments two lines of what you've piped into it at a time.

You can tailor xargs to split on delimiters besides carriage return/newline.

Use man xargs and google to find out more about the power of this versatile utility.

Firefox 44 includes a built-in JSON viewer (no add-ons required). The feature is turned off by default, so turn on devtools.jsonview.enabled: How can you disable the new JSON Viewer/Reader in Firefox Developer Edition?

You can use this code SELECT article FROM table1 ORDER BY publish_date LIMIT 0,10 where 0 is a start limit of record & 10 number of record

Convert it back to datetime after converting to date in order to keep same datatime if needed

select Convert(datetime, Convert(date, getdate())  )

We had the same issue with our Azure DevOps repositories after our domain changed, i.e. from @xy.com to @xyz.com. To fix this issue, we generated a fresh personal access token with the following permissions:

Code: read & write Packaging: read

Then we opened the Windows Credential Manager, added a new generic windows credential with the following details:

Internet or network address: "git:{projectname}@dev.azure.com/{projectname}" - alternatively you should use your git repository name here.
User name: "Personal Access Token"
Password: {The generated Personal Access Token}

Afterwards all our git operations were working again. Hope this helps someone else!

The way I typically do it is with sprintf. So for a long you could do the following assuming that you are on a 32 bit architecture:

char buf[5] = {0}; // one extra byte for null    
sprintf(buf, "%l", var_for_long);

Simple solution by Underscore.js

For example: Get all links text who's parents have class someClass

_.pluck($('.someClass').find('a'), 'text');

Working fiddle

apt-get install php7.3-mbstring solved the issue on ubuntu, php version is php-fpm 7.3

Use -regex not -name, and be aware that the regex matches against what find would print, e.g. "/home/test/test.log" not "test.log"

You can simply write:

val mutableList = mutableListOf<Kolory>()

This is the most idiomatic way.

Alternative ways are

val mutableList : MutableList<Kolory> = arrayListOf()

or

val mutableList : MutableList<Kolory> = ArrayList()

This is exploiting the fact that java types like ArrayList are implicitly implementing the type MutableList via a compiler trick.

I wrote small function for myself that works recursively in Postgres 9.4. I had same problem (good they did solve some of this headache in Postgres 9.5). Anyway here is the function (I hope it works well for you):

CREATE OR REPLACE FUNCTION jsonb_update(val1 JSONB,val2 JSONB)
RETURNS JSONB AS $$
DECLARE
    result JSONB;
    v RECORD;
BEGIN
    IF jsonb_typeof(val2) = 'null'
    THEN 
        RETURN val1;
    END IF;

    result = val1;

    FOR v IN SELECT key, value FROM jsonb_each(val2) LOOP

        IF jsonb_typeof(val2->v.key) = 'object'
            THEN
                result = result || jsonb_build_object(v.key, jsonb_update(val1->v.key, val2->v.key));
            ELSE
                result = result || jsonb_build_object(v.key, v.value);
        END IF;
    END LOOP;

    RETURN result;
END;
$$ LANGUAGE plpgsql;

Here is sample use:

select jsonb_update('{"a":{"b":{"c":{"d":5,"dd":6},"cc":1}},"aaa":5}'::jsonb, '{"a":{"b":{"c":{"d":15}}},"aa":9}'::jsonb);
                            jsonb_update                             
---------------------------------------------------------------------
 {"a": {"b": {"c": {"d": 15, "dd": 6}, "cc": 1}}, "aa": 9, "aaa": 5}
(1 row)

As you can see it analyze deep down and update/add values where needed.

In the Windows Command Prompt the ^ is used to escape the next character on the command line. (Like \ is used in strings.) Characters that need to be used in the command line as they are should have a ^ prefixed to them, hence that's why it works for the newline.

For reference the characters that need escaping (if specified as command arguments and not within quotes) are: &|()

So the equivalent of your linux example would be (the More? being a prompt):

C:\> dir ^
More? C:\Windows

This may help others

alter table fuinfo drop index fuinfo_email_unique

You can optionally actually use the get method of a dict:

x = {i<100: -1, -10<=i<=10: 0, i>100: 1}.get(True, 2)

You don't need the get method if one of the keys is guaranteed to evaluate to True:

x = {i<0: -1, i==0: 0, i>0: 1}[True]

At most one of the keys should ideally evaluate to True. If more than one key evaluates to True, the results could seem unpredictable.

You could default the parameter to null or false.
This way, it would be shorter to test if a value has been passed as parameter.

@mixin clearfix($width: null) {

  @if not ($width) {

    // if width is not passed, or empty do this

  } @else {

    display: inline-block;
    width: $width;

  }
}

I know it's late, but i hope someone will be helped of this answer

INSERT INTO t1 (a,b,c) VALUES (1,2,3),(4,5,6)
ON DUPLICATE KEY UPDATE c=VALUES(a)+VALUES(b);

You can read the tutorial below here :

https://mariadb.com/kb/en/library/insert-on-duplicate-key-update/

http://www.mysqltutorial.org/mysql-insert-or-update-on-duplicate-key-update/

We can do that with two way:
1- First create a new object and replicate the structure of the existing one by iterating 
 over its properties and copying them on the primitive level.

let user = {
     name: "John",
     age: 30
    };

    let clone = {}; // the new empty object

    // let's copy all user properties into it
    for (let key in user) {
      clone[key] = user[key];
    }

    // now clone is a fully independant clone
    clone.name = "Pete"; // changed the data in it

    alert( user.name ); // still John in the original object

2- Second we can use the method Object.assign for that 
    let user = { name: "John" };
    let permissions1 = { canView: true };
    let permissions2 = { canEdit: true };

    // copies all properties from permissions1 and permissions2 into user
    Object.assign(user, permissions1, permissions2);

  -Another example

    let user = {
      name: "John",
      age: 30
    };

    let clone = Object.assign({}, user);
It copies all properties of user into the empty object and returns it. Actually, the same as the loop, but shorter.

But Object.assign() not create a deep clone

let user = {
  name: "John",
  sizes: {
    height: 182,
    width: 50
  }
};

let clone = Object.assign({}, user);

alert( user.sizes === clone.sizes ); // true, same object

// user and clone share sizes
user.sizes.width++;       // change a property from one place
alert(clone.sizes.width); // 51, see the result from the other one

To fix that, we should use the cloning loop that examines each value of user[key] and, if it’s an object, then replicate its structure as well. That is called a “deep cloning”.

There’s a standard algorithm for deep cloning that handles the case above and more complex cases, called the Structured cloning algorithm. In order not to reinvent the wheel, we can use a working implementation of it from the JavaScript library lodash the method is called _.cloneDeep(obj).

For security reasons, it is not possible to get the real, full path of a file, referred through an <input type="file" /> element.

This question already mentions, and links to other Stack Overflow questions regarding this topic.

string = string.split("\\");

In JavaScript, the backslash is used to escape special characters, such as newlines (\n). If you want to use a literal backslash, a double backslash has to be used.

So, if you want to match two backslashes, four backslashes has to be used. For example,alert("\\\\") will show a dialog containing two backslashes.

In CMD, '&&' means "execute command 1, and if it succeeds, execute command 2". I have used it for things like:

build && run_tests

In PowerShell, the closest thing you can do is:

(build) -and (run_tests)

It has the same logic, but the output text from the commands is lost. Maybe it is good enough for you, though.

If you're doing this in a script, you will probably be better off separating the statements, like this:

build
if ($?) {
    run_tests
}

2019/11/27: The &&operator is now available for PowerShell 7 Preview 5+:

PS > echo "Hello!" && echo "World!"
Hello!
World!

The caller-saved / callee-saved terminology is based on a pretty braindead inefficient model of programming where callers actually do save/restore all the call-clobbered registers (instead of keeping long-term-useful values elsewhere), and callees actually do save/restore all the call-preserved registers (instead of just not using some or any of them).

Or you have to understand that "caller-saved" means "saved somehow if you want the value later".

In reality, efficient code lets values get destroyed when they're no longer needed. Compilers typically make functions that save a few call-preserved registers at the start of a function (and restore them at the end). Inside the function, they use those regs for values that need to survive across function calls.

I prefer "call-preserved" vs. "call-clobbered", which are unambiguous and self-describing once you've heard of the basic concept, and don't require any serious mental gymnastics to think about from the caller's perspective or the callee's perspective. (Both terms are from the same perspective).

Plus, these terms differ by more than one letter.

The terms volatile / non-volatile are pretty good, by analogy with storage which loses its value on power-loss or not, (like DRAM vs. Flash). But the C volatile keyword has a totally different technical meaning, so that's a downside to "(non)-volatile" when describing C calling conventions.

• Call-clobbered, aka caller-saved or volatile registers are good for scratch / temporary values that aren't needed after the next function call.

From the callee's perspective, your function can freely overwrite (aka clobber) these registers without saving/restoring.

From a caller's perspective, call foo destroys (aka clobbers) all the call-clobbered registers, or at least you have to assume it does.

You can write private helper functions that have a custom calling convention, e.g. you know they don't modify a certain register. But if all you know (or want to assume or depend on) is that the target function follows the normal calling convention, then you have to treat a function call as if it does destroy all the call-clobbered registers. That's literally what the name come from: a call clobbers those registers.

Some compilers that do inter-procedural optimization can also create internal-use-only definitions of functions that don't follow the ABI, using a custom calling convention.

• Call-preserved, aka callee-saved or non-volatile registers keep their values across function calls. This is useful for loop variables in a loop that makes function calls, or basically anything in a non-leaf function in general.

From a callee's perspective, these registers can't be modified unless you save the original value somewhere so you can restore it before returning. Or for registers like the stack pointer (which is almost always call-preserved), you can subtract a known offset and add it back again before returning, instead of actually saving the old value anywhere. i.e. you can restore it by dead reckoning, unless you allocate a runtime-variable amount of stack space. Then typically you restore the stack pointer from another register.

A function that can benefit from using a lot of registers can save/restore some call-preserved registers just so it can use them as more temporaries, even if it doesn't make any function calls. Normally you'd only do this after running out of call-clobbered registers to use, because save/restore typically costs a push/pop at the start/end of the function. (Or if your function has multiple exit paths, a pop in each of them.)

The name "caller-saved" is misleading: you don't have to specially save/restore them. Normally you arrange your code to have values that need to survive a function call in call-preserved registers, or somewhere on the stack, or somewhere else that you can reload from. It's normal to let a call destroy temporary values.

An ABI or calling convention defines which are which

See for example What registers are preserved through a linux x86-64 function call for the x86-64 System V ABI.

Also, arg-passing registers are always call-clobbered in all function-calling conventions I'm aware of. See Are rdi and rsi caller saved or callee saved registers?

But system-call calling conventions typically make all the registers except the return value call-preserved. (Usually including even condition-codes / flags.) See What are the calling conventions for UNIX & Linux system calls on i386 and x86-64

To check for DIRECTORIES you should not use something like:

if exist c:\windows\

To work properly use:

if exist c:\windows\\.

note the "." at the end.

you can do it using eloquent easily like this

$sum = Model::sum('sum_field');

its will return a sum of fields, if apply condition on it that is also simple

$sum = Model::where('status', 'paid')->sum('sum_field');

Enabling SQL Server Service Broker requires a database lock. Stop the SQL Server Agent and then execute the following:

USE master ;
GO

ALTER DATABASE [MyDatabase] SET ENABLE_BROKER ;
GO

Change [MyDatabase] with the name of your database in question and then start SQL Server Agent.

If you want to see all the databases that have Service Broker enabled or disabled, then query sys.databases, for instance:

SELECT
    name, database_id, is_broker_enabled
FROM sys.databases

If you want to call the main method of another class you can do it this way assuming I understand the question.

public class MyClass {

    public static void main(String[] args) {

        System.out.println("main() method of MyClass");
        OtherClass obj = new OtherClass();
    }
}

class OtherClass {

    public OtherClass() {

        // Call the main() method of MyClass
        String[] arguments = new String[] {"123"};
        MyClass.main(arguments);
    }
}

The solutions that involve setting this.state directly aren't working for me in React 16, so here is what I did to reset each key:

  const initialState = { example: 'example' }
  ...
  constructor() {
      super()
      this.state = initialState
  }
  ...
  reset() {
    const keys = Object.keys(this.state)
    const stateReset = keys.reduce((acc, v) => ({ ...acc, [v]: undefined }), {})
    this.setState({ ...stateReset, ...initialState })
  }

What about this one:

final BooleanWrapper condition = new BooleanWrapper();
someObjects.forEach(obj -> {
   if (condition.ok()) {
     // YOUR CODE to control
     condition.stop();
   }
});

Where BooleanWrapper is a class you must implement to control the flow.

First, Lateral and Cross Apply is same thing. Therefore you may also read about Cross Apply. Since it was implemented in SQL Server for ages, you will find more information about it then Lateral.

Second, according to my understanding, there is nothing you can not do using subquery instead of using lateral. But:

Consider following query.

Select A.*
, (Select B.Column1 from B where B.Fk1 = A.PK and Limit 1)
, (Select B.Column2 from B where B.Fk1 = A.PK and Limit 1)
FROM A 

You can use lateral in this condition.

Select A.*
, x.Column1
, x.Column2
FROM A LEFT JOIN LATERAL (
  Select B.Column1,B.Column2,B.Fk1 from B  Limit 1
) x ON X.Fk1 = A.PK

In this query you can not use normal join, due to limit clause. Lateral or Cross Apply can be used when there is not simple join condition.

There are more usages for lateral or cross apply but this is most common one I found.

Read file, parse each line into an integer and store into a list:

List<Integer> list = new ArrayList<Integer>();
File file = new File("file.txt");
BufferedReader reader = null;

try {
    reader = new BufferedReader(new FileReader(file));
    String text = null;

    while ((text = reader.readLine()) != null) {
        list.add(Integer.parseInt(text));
    }
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} finally {
    try {
        if (reader != null) {
            reader.close();
        }
    } catch (IOException e) {
    }
}

//print out the list
System.out.println(list);

For one line!

Try using for wmic OS Get localdatetime^|find "." in for /f without tokens and/or delims, this works in any language / region and also, no user settings interfere with the layout of the output.

• In command line:

for /f %i in ('wmic OS Get localdatetime^|find "."')do @cmd/v/c "set _date=%i &echo= year: !_date:~0,4!&&echo=month:   !_date:~4,2!&echo=  day:   !_date:~6,2!"

• In bat/cmd file:

for /f %%i in ('wmic OS Get localdatetime^|find "."')do @cmd/v/c "set _date=%%i &echo= year: !_date:~0,4!&&echo=month:   !_date:~4,2!&echo=  day:   !_date:~6,2!"

Results:

 year: 2019
month:   06
  day:   12

• With Hour and Minute in bat/cmd file:

for /f %%i in ('wmic OS Get localdatetime^|find "."')do @cmd/v/c "set _date=%%i &echo=  year: !_date:~0,4!&&echo= month:   !_date:~4,2!&echo=   day:   !_date:~6,2!&echo=  hour:   !_date:~8,2!&echo=minute:   !_date:~10,2!"

• With Hour and Minute in command line:

for /f %i in ('wmic OS Get localdatetime^|find "."')do @cmd/v/c "set _date=%i &echo=  year: !_date:~0,4!&&echo= month:   !_date:~4,2!&echo=   day:   !_date:~6,2!&echo=  hour:   !_date:~8,2!&echo=minute:   !_date:~10,2!"

Results:

  year: 2020
 month:   05
   day:   16
  hour:   00
minute:   46

you can define the variable global , but when using this variable must to write in script block .

def foo="foo"
pipeline {
agent none
stages {
   stage("first") {
      script{
          sh "echo ${foo}"
      }
    }
  }
}

Microsoft says to never use a key generator web site.

Like everyone else here, I added this to my web.config.

<System.Web>
    <machineKey decryptionKey="ABC123...SUPERLONGKEY...5432JFEI242" 
                validationKey="XYZ234...SUPERLONGVALIDATIONKEY...FDA" 
                validation="SHA1" />
</system.web>

However, I used IIS as my machineKey generator like so:

1. Open IIS and select a website to get this screen:

2. Double click the Machine Key icon to get this screen:

3. Click the "Generate Keys" link on the right which I outlined in the pic above.

Notes:

• If you select the "Generate a unique key for each application" checkbox, ",IsolateApps" will be added to the end of your keys. I had to remove these to get the app to work. Obviously, they're not part of the key.
• SHA1 was the default encryption method selected by IIS and if you change it, don't forget to change the validation property on machineKey in the web.config. However, encryption methods and algorithms evolve so please feel free to edit this post with the updated preferred Encryption method or mention it in the notes and I'll update.

In my case (I'm using VS 2017) works fine the following simple code:

#include "pch.h"
#include <iostream>
#include <stdlib.h>
#include <time.h>

int main()
{
    srand(time(NULL));

    for (int i = 1000; i > 0; i--) //try it thousand times
    {
        int randnum = (double)rand() / ((double)RAND_MAX + 1);
        std::cout << " rnum: " << rand()%2 ;
    }
} 

Ran into a issue with the HTTPClient, even with the suggestions still could not get it to authenticate. Turns out I needed a trailing '/' in my relative path.

i.e.

var result = await _client.GetStringAsync(_awxUrl + "api/v2/inventories/?name=" + inventoryName);

var result = await _client.PostAsJsonAsync(_awxUrl + "api/v2/job_templates/" + templateId+"/launch/" , new {
                inventory = inventoryId
            });

Great answer and contributions from all! I had to extend this function slightly to include disabling of select elements:

jQuery.fn.extend({
disable: function (state) {
    return this.each(function () {
        var $this = jQuery(this);
        if ($this.is('input, button'))
            this.disabled = state;
        else if ($this.is('select') && state)
            $this.attr('disabled', 'disabled');
        else if ($this.is('select') && !state)
            $this.removeAttr('disabled');
        else
            $this.toggleClass('disabled', state);
    });
}});

Seems to be working for me. Thanks all!

Laravel optional() Helper is comes to solve this problem. Try this helper so that if any key have not value then it not return error

foreach ($sample_arr as $key => $value) {        
      $sample_data[] = array(       
        'client_phone' =>optional($users)->phone        
      );
    }
 print_r($sample_data);

You can do it like this.

Models.TestModels obj = new Models.TestModels();
foreach (var item in obj.sp)
{
    Console.Write(item.Key);
    Console.Write(item.Value.name);
    Console.Write(item.Value.age);
}

The problem you most likely have right now is that the collection is private. If you add public to the beginning of this line

Dictionary<int, dynamic> sp = new Dictionary<int, dynamic> 

You should be able to access it from the function inside your controller.

Edit: Adding functional example of the full TestModels implementation.

Your TestModels class should look something like this.

public class TestModels
{
    public Dictionary<int, dynamic> sp = new Dictionary<int, dynamic>();

    public TestModels()
    {
        sp.Add(0, new {name="Test One", age=5});
        sp.Add(1, new {name="Test Two", age=7});
    }
}

You probably want to read up on the dynamic keyword as well.

AGE is defined as "42" so the line:

str += "Do you feel " + AGE + " years old?";

is converted to:

str += "Do you feel " + "42" + " years old?";

Which isn't valid since "Do you feel " and "42" are both const char[]. To solve this, you can make one a std::string, or just remove the +:

// 1.
str += std::string("Do you feel ") + AGE + " years old?";

// 2.
str += "Do you feel " AGE " years old?";

I found some information here Javascript Detecting Page Refresh

function UnLoadWindow() {
    return 'We strongly recommends NOT closing this window yet.'
}

window.onbeforeunload = UnLoadWindow;

This is a silly example of how to use do.call(rbind,) on the output of Map() [which is similar to lapply()]

> DF <- do.call(rbind,Map(function(x) data.frame(a=x,b=x+1),x=1:3))
> DF
  x y
1 1 2
2 2 3
3 3 4
> class(DF)
[1] "data.frame"

I use this construct quite often.

A nice solution that I've found is to do on UI something like:

<div *ngIf="isDataLoaded">
 ...Your page...
</div

Only when: isDataLoaded is true the page is rendered.

When you want to count the frequency of categorical data in a column in pandas dataFrame use: df['Column_Name'].value_counts()

-Source.

Searching internet I found this as an acceptable solution. A different class is used instead of PDO and PDO functions are called through magic function calls. I am not sure this creates serious performance problems. But it can be used until a sensible logging feature is added to PDO.

So as per this thread, you can write a wrapper for your PDO connection which can log and throws an exception when you get a error.

Here is simple example:

class LoggedPDOSTatement extends PDOStatement    {

function execute ($array)    {
    parent::execute ($array);
    $errors = parent::errorInfo();
    if ($errors[0] != '00000'):
        throw new Exception ($errors[2]);
    endif;
  }

}

so you can use that class instead of PDOStatement:

$this->db->setAttribute (PDO::ATTR_STATEMENT_CLASS, array ('LoggedPDOStatement', array()));

Here a mentioned PDO decorator implementation:

class LoggedPDOStatement    {

function __construct ($stmt)    {
    $this->stmt = $stmt;
}

function execute ($params = null)    {
    $result = $this->stmt->execute ($params); 
    if ($this->stmt->errorCode() != PDO::ERR_NONE):
        $errors = $this->stmt->errorInfo();
        $this->paint ($errors[2]);
    endif;
    return $result;
}

function bindValue ($key, $value)    {
    $this->values[$key] = $value;    
    return $this->stmt->bindValue ($key, $value);
}

function paint ($message = false)    {
    echo '<pre>';
    echo '<table cellpadding="5px">';
    echo '<tr><td colspan="2">Message: ' . $message . '</td></tr>';
    echo '<tr><td colspan="2">Query: ' . $this->stmt->queryString . '</td></tr>';
    if (count ($this->values) > 0):
    foreach ($this->values as $key => $value):
    echo '<tr><th align="left" style="background-color: #ccc;">' . $key . '</th><td>' . $value . '</td></tr>';
    endforeach;
    endif;
    echo '</table>';
    echo '</pre>';
}

function __call ($method, $params)    {
    return call_user_func_array (array ($this->stmt, $method), $params); 
}

}

I find the following link quite useful

http://blog.hubspot.com/marketing/calendar-invites-ical-outlook-google

If you're OK with enclosing the whole HTML <body> with a <div> tag, here is my solution, which works on Chrome 88.0.4324.104 (the latest version as of Jan., 23, 2021).

First, add the audio section along with a piece of script shown below at the start of <body> section:

<audio id="divAudio">
   <source src="music.mp3" type="audio/mp3">
</audio>

<script>
   var vAudio = document.getElementById("divAudio");
   function playMusic()
   {
      vAudio.play();
   }
</script>

Second, enclose your whole HTML <body> contents (excluding the inserted piece of code shown above) with a dummy section <div onmouseover="playMusic()">. If your HTML <body> contents are already enclosed by a global <div> section, then just add the onmouseover="playMusic()" tag in that <div>.

The solution works by triggering the playMusic() function by hovering over the webpage and tricks Chrome of "thinking" that the user has done something to play it. This solution also comes with the benefit that the piece of audio would only be played when the user is browsing that page.

You can't just change the delimiters from ---- BEGIN SSH2 PUBLIC KEY ---- to -----BEGIN RSA PUBLIC KEY----- and expect that it will be sufficient to convert from one format to another (which is what you've done in your example).

This article has a good explanation about both formats.

What you get in an RSA PUBLIC KEY is closer to the content of a PUBLIC KEY, but you need to offset the start of your ASN.1 structure to reflect the fact that PUBLIC KEY also has an indicator saying which type of key it is (see RFC 3447). You can see this using openssl asn1parse and -strparse 19, as described in this answer.

EDIT: Following your edit, your can get the details of your RSA PUBLIC KEY structure using grep -v -- ----- | tr -d '\n' | base64 -d | openssl asn1parse -inform DER:

    0:d=0  hl=4 l= 266 cons: SEQUENCE          
    4:d=1  hl=4 l= 257 prim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
  265:d=1  hl=2 l=   3 prim: INTEGER           :010001

To decode the SSH key format, you need to use the data format specification in RFC 4251 too, in conjunction with RFC 4253:

   The "ssh-rsa" key format has the following specific encoding:

      string    "ssh-rsa"
      mpint     e
      mpint     n

For example, at the beginning, you get 00 00 00 07 73 73 68 2d 72 73 61. The first four bytes (00 00 00 07) give you the length. The rest is the string itself: 73=s, 68=h, ... -> 73 73 68 2d 72 73 61=ssh-rsa, followed by the exponent of length 1 (00 00 00 01 25) and the modulus of length 256 (00 00 01 00 7f ...).

DPI should not be stored in an bitmap image file, as most sources of data for bitmaps render it meaningless.

A bitmap image is stored as pixels. Pixels have no inherent size in any respect. It's only at render time - be it monitor, printer, or automated crossstitching machine - that DPI matters.

A 800x1000 pixel bitmap image, printed at 100 dpi, turns into a nice 8x10" photo. Printed at 200 dpi, the EXACT SAME bitmap image turns into a 4x5" photo.

Capture an image with a digital camera, and what does DPI mean? It's certainly not the size of the area focused onto the CCD imager - that depends on the distance, and with NASA returning images of galaxies that are 100,000 light years across, and 2 million light years apart, in the same field of view, what kind of DPI do you get from THAT information?

Don't fall victim to the idea of the DPI of a bitmap image - it's a mistake. A bitmap image has no physical dimensions (save for a few micrometers of storage space in RAM or hard drive). It's only a displayed image, or a printed image, that has a physical size in inches, or millimeters, or furlongs.

It would be difficult to say if there's any issue with your code without checking it out, however this happens to me quite a lot in (Version 6.0 (6A216f)). I usually have to reset the simulator's Content and Settings and/or restart xCode to get it working again. Try those and see if that solves the problem.

You can also use the ES6 Reflect object:

x = {'key': 1};
Reflect.has( x, 'key'); // returns true

Documentation on MDN for Reflect.has can be found here.

The static Reflect.has() method works like the in operator as a function.

I sometimes use (in Load)

this.BeginInvoke((MethodInvoker) delegate {
  // some code
});

or

this.BeginInvoke((MethodInvoker) this.SomeMethod);

(change "this" to your form variable if you are handling the event on an instance other than "this").

This pushes the invoke onto the windows-forms loop, so it gets processed when the form is processing the message queue.

[updated on request]

The Control.Invoke/Control.BeginInvoke methods are intended for use with threading, and are a mechanism to push work onto the UI thread. Normally this is used by worker threads etc. Control.Invoke does a synchronous call, where-as Control.BeginInvoke does an asynchronous call.

Normally, these would be used as:

SomeCodeOrEventHandlerOnAWorkerThread()
{
  // this code running on a worker thread...
  string newText = ExpensiveMethod(); // perhaps a DB/web call

  // now ask the UI thread to update itself
  this.Invoke((MethodInvoker) delegate {
      // this code runs on the UI thread!
      this.Text = newText;
  });
}

It does this by pushing a message onto the windows message queue; the UI thread (at some point) de-queues the message, processes the delegate, and signals the worker that it completed... so far so good ;-p

OK; so what happens if we use Control.Invoke / Control.BeginInvoke on the UI thread? It copes... if you call Control.Invoke, it is sensible enough to know that blocking on the message queue would cause an immediate deadlock - so if you are already on the UI thread it simply runs the code immediately... so that doesn't help us...

But Control.BeginInvoke works differently: it always pushes work onto the queue, even it we are already on the UI thread. This makes a really simply way of saying "in a moment", but without the inconvenience of timers etc (which would still have to do the same thing anyway!).

Couldn't you just call the following replaceing the {zipcode} with the zip code or city and state http://maps.googleapis.com/maps/api/geocode/json?address={zipcode}

Google Geocoding

Here is a link with a How To Geocode using JavaScript: Geocode walk-thru. If you need the specific lat/lng numbers call geometry.location.lat() or geometry.location.lng() (API for google.maps.LatLng class)

EXAMPLE to get lat/lng:

    var lat = '';
    var lng = '';
    var address = {zipcode} or {city and state};
    geocoder.geocode( { 'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
         lat = results[0].geometry.location.lat();
         lng = results[0].geometry.location.lng();
        });
      } else {
        alert("Geocode was not successful for the following reason: " + status);
      }
    });
    alert('Latitude: ' + lat + ' Logitude: ' + lng);

This will help to find the spaces in the beginning, middle and ending:

var regexp = /\s/g

Those are two different things, as others have mentioned.

When you specify # -*- coding: utf-8 -*-, you're telling Python the source file you've saved is utf-8. The default for Python 2 is ASCII (for Python 3 it's utf-8). This just affects how the interpreter reads the characters in the file.

In general, it's probably not the best idea to embed high unicode characters into your file no matter what the encoding is; you can use string unicode escapes, which work in either encoding.

When you declare a string with a u in front, like u'This is a string', it tells the Python compiler that the string is Unicode, not bytes. This is handled mostly transparently by the interpreter; the most obvious difference is that you can now embed unicode characters in the string (that is, u'\u2665' is now legal). You can use from __future__ import unicode_literals to make it the default.

This only applies to Python 2; in Python 3 the default is Unicode, and you need to specify a b in front (like b'These are bytes', to declare a sequence of bytes).

Incase anybody is looking for a TypeScript version of usePrevious:

In a .tsx module:

import { useEffect, useRef } from "react";

const usePrevious = <T extends unknown>(value: T): T | undefined => {
  const ref = useRef<T>();
  useEffect(() => {
    ref.current = value;
  });
  return ref.current;
};

Or in a .ts module:

import { useEffect, useRef } from "react";

const usePrevious = <T>(value: T): T | undefined => {
  const ref = useRef<T>();
  useEffect(() => {
    ref.current = value;
  });
  return ref.current;
};

You also need to change the DataSource of the connection string. KELVIN-PC is the name of your local machine and the sql server is running on the default instance.

If you are sure the the server is running as the default instance, you can always use . in the DataSource, eg.

connectionString="Data Source=.;Initial Catalog=LMS;User ID=sa;Password=temperament"

otherwise, you need to specify the name of the instance of the server,

connectionString="Data Source=.\INSTANCENAME;Initial Catalog=LMS;User ID=sa;Password=temperament"

Quick solution without downloading anything is to use online editors that has "Magic Wand Tool".

Use deepgrep and deepfind. On debian-based systems you can install them by:

sudo apt-get install strigi-utils

Both commands search for nested archives as well. In your case the command would look like:

find . -name "*.jar" | xargs -I {} deepfind {} | grep Hello.class

Here, in this post you will find the detailed code for establishing socket between devices or between two application in the same mobile.

You have to create two application to test below code.

In both application's manifest file, add below permission

<uses-permission android:name="android.permission.INTERNET" />

1st App code: Client Socket

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TableRow
        android:id="@+id/tr_send_message"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="11dp">

        <EditText
            android:id="@+id/edt_send_message"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:layout_marginRight="10dp"
            android:layout_marginLeft="10dp"
            android:hint="Enter message"
            android:inputType="text" />

        <Button
            android:id="@+id/btn_send"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="10dp"
            android:text="Send" />
    </TableRow>

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_below="@+id/tr_send_message"
        android:layout_marginTop="25dp"
        android:id="@+id/scrollView2">

        <TextView
            android:id="@+id/tv_reply_from_server"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" />
    </ScrollView>
</RelativeLayout>

MainActivity.java

import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;

/**
 * Created by Girish Bhalerao on 5/4/2017.
 */
public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private TextView mTextViewReplyFromServer;
    private EditText mEditTextSendMessage;

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

        Button buttonSend = (Button) findViewById(R.id.btn_send);

        mEditTextSendMessage = (EditText) findViewById(R.id.edt_send_message);
        mTextViewReplyFromServer = (TextView) findViewById(R.id.tv_reply_from_server);

        buttonSend.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {

            case R.id.btn_send:
                sendMessage(mEditTextSendMessage.getText().toString());
                break;
        }
    }

    private void sendMessage(final String msg) {

        final Handler handler = new Handler();
        Thread thread = new Thread(new Runnable() {
            @Override
            public void run() {

                try {
                    //Replace below IP with the IP of that device in which server socket open.
                    //If you change port then change the port number in the server side code also.
                    Socket s = new Socket("xxx.xxx.xxx.xxx", 9002);

                    OutputStream out = s.getOutputStream();

                    PrintWriter output = new PrintWriter(out);

                    output.println(msg);
                    output.flush();
                    BufferedReader input = new BufferedReader(new InputStreamReader(s.getInputStream()));
                    final String st = input.readLine();

                    handler.post(new Runnable() {
                        @Override
                        public void run() {

                            String s = mTextViewReplyFromServer.getText().toString();
                            if (st.trim().length() != 0)
                                mTextViewReplyFromServer.setText(s + "\nFrom Server : " + st);
                        }
                    });

                    output.close();
                    out.close();
                    s.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });

        thread.start();
    }
}

2nd App Code - Server Socket

activity_main.xml

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

    <Button
        android:id="@+id/btn_stop_receiving"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="STOP Receiving data"
        android:layout_alignParentTop="true"
        android:enabled="false"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="89dp" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/btn_stop_receiving"
        android:layout_marginTop="35dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true">

        <TextView
            android:id="@+id/tv_data_from_client"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" />
    </ScrollView>

    <Button
        android:id="@+id/btn_start_receiving"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="START Receiving data"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="14dp" />
</RelativeLayout>

MainActivity.java

import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * Created by Girish Bhalerao on 5/4/2017.
 */
public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    final Handler handler = new Handler();

    private Button buttonStartReceiving;
    private Button buttonStopReceiving;
    private TextView textViewDataFromClient;
    private boolean end = false;

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

        buttonStartReceiving = (Button) findViewById(R.id.btn_start_receiving);
        buttonStopReceiving = (Button) findViewById(R.id.btn_stop_receiving);
        textViewDataFromClient = (TextView) findViewById(R.id.tv_data_from_client);

        buttonStartReceiving.setOnClickListener(this);
        buttonStopReceiving.setOnClickListener(this);

    }

    private void startServerSocket() {

        Thread thread = new Thread(new Runnable() {

            private String stringData = null;

            @Override
            public void run() {

                try {

                    ServerSocket ss = new ServerSocket(9002);

                    while (!end) {
                        //Server is waiting for client here, if needed
                        Socket s = ss.accept();
                        BufferedReader input = new BufferedReader(new InputStreamReader(s.getInputStream()));
                        PrintWriter output = new PrintWriter(s.getOutputStream());

                        stringData = input.readLine();
                        output.println("FROM SERVER - " + stringData.toUpperCase());
                        output.flush();

                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        updateUI(stringData);
                        if (stringData.equalsIgnoreCase("STOP")) {
                            end = true;
                            output.close();
                            s.close();
                            break;
                        }

                        output.close();
                        s.close();
                    }
                    ss.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

        });
        thread.start();
    }

    private void updateUI(final String stringData) {

        handler.post(new Runnable() {
            @Override
            public void run() {

                String s = textViewDataFromClient.getText().toString();
                if (stringData.trim().length() != 0)
                    textViewDataFromClient.setText(s + "\n" + "From Client : " + stringData);
            }
        });
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {
            case R.id.btn_start_receiving:

                startServerSocket();
                buttonStartReceiving.setEnabled(false);
                buttonStopReceiving.setEnabled(true);
                break;

            case R.id.btn_stop_receiving:

                //stopping server socket logic you can add yourself
                buttonStartReceiving.setEnabled(true);
                buttonStopReceiving.setEnabled(false);
                break;
        }
    }
}

To add to Rob's answer, since iOS 10.0, Apple has introduced an entirely new "Unified Logging" system that supersedes existing logging systems (including ASL and Syslog, NSLog), and also surpasses existing logging approaches in performance, thanks to its new techniques including log data compression and deferred data collection.

From Apple:

The unified logging system provides a single, efficient, performant API for capturing messaging across all levels of the system. This unified system centralizes the storage of log data in memory and in a data store on disk.

Apple highly recommends using os_log going forward to log all kinds of messages, including info, debug, error messages because of its much improved performance compared to previous logging systems, and its centralized data collection allowing convenient log and activity inspection for developers. In fact, the new system is likely so low-footprint that it won't cause the "observer effect" where your bug disappears if you insert a logging command, interfering the timing of the bug to happen.

You can learn more about this in details here.

To sum it up: use print() for your personal debugging for convenience (but the message won't be logged when deployed on user devices). Then, use Unified Logging (os_log) as much as possible for everything else.

For me DownloadSVN is the best SVN client no install no explore shell integration so no need to worry about system instability small and very light weight and it does a great job just recently i had a very bad experience with TortoiseSVN on my WindowsXP_x86:) luckily i found this great SVN client

Tips to prevent issue (bad hash) :

I experienced that NodeJS is hashing the UTF-8 representation of the string. Other languages (like Python, PHP or PERL...) are hashing the byte string.

We can add binary argument to use the byte string.

const crypto = require("crypto");

function sha1(data) {
    return crypto.createHash("sha1").update(data, "binary").digest("hex");
}

sha1("Your text ;)");

You can try with : "\xac", "\xd1", "\xb9", "\xe2", "\xbb", "\x93", etc...

Other languages (Python, PHP, ...):

sha1("\xac") //39527c59247a39d18ad48b9947ea738396a3bc47

Nodejs:

sha1 = crypto.createHash("sha1").update("\xac", "binary").digest("hex") //39527c59247a39d18ad48b9947ea738396a3bc47
//without:
sha1 = crypto.createHash("sha1").update("\xac").digest("hex") //f50eb35d94f1d75480496e54f4b4a472a9148752

Lets look at some test cases - try running the following expressions in your JS console:

"a" < "b"

"aa" < "ab"

"aaa" < "aab"

All return true.

JavaScript compares strings character by character and "a" comes before "b" in the alphabet - hence less than.

In your case it works like so -

1 . "a?aaa" < "?a?b"

compares the first two "a" characters - all equal, lets move to the next character.

2 . "a?a??aa" < "a?b??"

compares the second characters "a" against "b" - whoop! "a" comes before "b". Returns true.

import cv2
camera = cv2.VideoCapture(0)
while True:
    return_value,image = camera.read()
    gray = cv2.cvtColor(image,cv2.COLOR_BGR2GRAY)
    cv2.imshow('image',gray)
    if cv2.waitKey(1)& 0xFF == ord('s'):
        cv2.imwrite('test.jpg',image)
        break
camera.release()
cv2.destroyAllWindows()

JavaScript doesn't have a built-in init() function, that is, it's not a part of the language. But it's not uncommon (in a lot of languages) for individual programmers to create their own init() function for initialisation stuff.

A particular init() function may be used to initialise the whole webpage, in which case it would probably be called from document.ready or onload processing, or it may be to initialise a particular type of object, or...well, you name it.

What any given init() does specifically is really up to whatever the person who wrote it needed it to do. Some types of code don't need any initialisation.

function init() {
  // initialisation stuff here
}

// elsewhere in code
init();

Since c is holding the address of an integer pointer, its type should be int**:

int **c;
c = &a;

The entire program becomes:

#include <stdio.h>                                                              
int main(){
    int b=10;
    int *a;
    a=&b;
    int **c;
    c=&a;
    printf("%d",(**c));   //successfully prints 10
    return 0;
}

I'm guessing that your class is in a different namespace. The canonical way to solve this would be to use the resources class and a strongly typed resource:

ProjectNamespace.Properties.Resources.file

Use the IDE's resource manager to add resources.

On MacOS Sierra use:

/usr/bin/time -l commandToMeasure

You can use grep to take what you want maybe.

There are two ways to go about this:

I recommend the first option initially, due to its ease of implementation. Once you mature in your build processes, switch over to the second.

1. Poll the repository to see if changes occurred. This might "skip" a commit if two commits come in within the same polling interval. Description of how to do so here, note the fourth screenshot where you configure on the job a "build trigger" based on polling the repository (with a crontab-like configuration).

2. Configure your repository to have a post-commit hook which notifies Jenkins that a build needs to start. Description of how to do so here, in the section "post-commit hooks"

The SVN Tag feature is not part of the polling, it is part of promoting the current "head" of the source code to a tag, to snapshot a build. This allows you to refer to Jenkins buid #32 as SVN tag /tags/build-32 (or something similar).

I'm taking a cue from the comments in @Dhara's answer, it sounds like you want to set a list of new_tick_locations by a function from the old x-axis to the new x-axis. The tick_function below takes in a numpy array of points, maps them to a new value and formats them:

import numpy as np
import matplotlib.pyplot as plt

fig = plt.figure()
ax1 = fig.add_subplot(111)
ax2 = ax1.twiny()

X = np.linspace(0,1,1000)
Y = np.cos(X*20)

ax1.plot(X,Y)
ax1.set_xlabel(r"Original x-axis: $X$")

new_tick_locations = np.array([.2, .5, .9])

def tick_function(X):
    V = 1/(1+X)
    return ["%.3f" % z for z in V]

ax2.set_xlim(ax1.get_xlim())
ax2.set_xticks(new_tick_locations)
ax2.set_xticklabels(tick_function(new_tick_locations))
ax2.set_xlabel(r"Modified x-axis: $1/(1+X)$")
plt.show()

For me this problem appeared when I changed the environment path to point to v2.7 which was initially pointing to v3.6. After that, to run pip or virtualenv commands, I had to python -m pip install XXX as mentioned in the answers below.

So, in order to get rid of this, I ran the v2.7 installer again, chose change option and made sure that, add to path option was enabled, and let the installer run. After that everything works as it should.

The actual way to end a program, is to call

raise SystemExit

It's what sys.exit does, anyway.

A plain SystemExit, or with None as a single argument, sets the process' exit code to zero. Any non-integer exception value (raise SystemExit("some message")) prints the exception value to sys.stderr and sets the exit code to 1. An integer value sets the process' exit code to the value:

$ python -c "raise SystemExit(4)"; echo $?
4

GetType() exists on every single framework type, because it is defined on the base object type. So, regardless of the type itself, you can use it to return the underlying Type

So, all you need to do is:

u.GetType() == t

There 3 functions you want to look at here:

• LARGE - Returns the k-th largest value in a data set.
• INDEX - Returns a value or the reference to a value from within a table or range.
• MATCH - The MATCH function searches for a specified item in a range of cells, and then returns the relative position of that item in the range.

I ran a sample in Excel with your OPS values in Column B and Players in Column C, see below:

• In Cells A13 to A17, the values 1 to 5 were inserted to specify the nth highest value.
• In Cell B13, the following formula was added: =LARGE($B$2:$B$11, A13)
• In Cell C13, the following formula was added: =INDEX($C$2:$C$11,MATCH(B13,$B$2:$B$11,0))
• These formulae get the highest ranking OPS and Player based on the value in A13.
• Simply select and drag to copy these formulae down to the next 4 cells which will reference the corresponding ranking in Column A.

Okay turned out that I made a really silly mistake. The device I am using for testing is running Android 4.0.4, API level 15.

The styles.xml file that I was editing is in the default values folder. I edited the styles.xml in values-v14 folder and it works all fine now.

I normally set paths in

~/.bashrc

However for Java, I followed instructions at https://askubuntu.com/questions/55848/how-do-i-install-oracle-java-jdk-7

and it was sufficient for me.

you can also define multiple java_home's and have only one of them active (rest commented).

suppose in your bashrc file, you have

export JAVA_HOME=......jdk1.7

#export JAVA_HOME=......jdk1.8

notice 1.8 is commented. Once you do

source ~/.bashrc

jdk1.7 will be in path.

you can switch them fairly easily this way. There are other more permanent solutions too. The link I posted has that info.

Follow this https://developers.google.com/youtube/player_parameters for more info about video controls like:

<iframe id="video_iframe" width="660" height="415" src="http://www.youtube.com/v/{{course_url}}?start=7&autoplay=0&showinfo=0&iv_load_policy=3&rel=0"
                frameborder="0"
                allowfullscreen></iframe>

start=7&autoplay=0&showinfo=0&iv_load_policy=3&rel=0" frameborder="0"

all controls are described in there

Have a look at ImmutableMap JavaDoc: doc

There is information about that there:

Unlike Collections.unmodifiableMap(java.util.Map), which is a view of a separate map which can still change, an instance of ImmutableMap contains its own data and will never change. ImmutableMap is convenient for public static final maps ("constant maps") and also lets you easily make a "defensive copy" of a map provided to your class by a caller.

I've always thought keydown happened as soon as you press the key down, keypress is the action of pressing the key and releasing it.

I found this which gives a little different explanation: http://bytes.com/topic/net/answers/649131-difference-keypress-keydown-event

ng-if="select.name.indexOf('?') !== -1" 

For future Googlers, here is an algorithm that I ported from Quasimondo. It's kind of a mix between a box blur and a gaussian blur, it's very pretty and quite fast too.

Update for people encountering the ArrayIndexOutOfBoundsException problem : @anthonycr in the comments provides this information :

I found that by replacing Math.abs with StrictMath.abs or some other abs implementation, the crash does not occur.

/**
 * Stack Blur v1.0 from
 * http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
 * Java Author: Mario Klingemann <mario at quasimondo.com>
 * http://incubator.quasimondo.com
 *
 * created Feburary 29, 2004
 * Android port : Yahel Bouaziz <yahel at kayenko.com>
 * http://www.kayenko.com
 * ported april 5th, 2012
 *
 * This is a compromise between Gaussian Blur and Box blur
 * It creates much better looking blurs than Box Blur, but is
 * 7x faster than my Gaussian Blur implementation.
 *
 * I called it Stack Blur because this describes best how this
 * filter works internally: it creates a kind of moving stack
 * of colors whilst scanning through the image. Thereby it
 * just has to add one new block of color to the right side
 * of the stack and remove the leftmost color. The remaining
 * colors on the topmost layer of the stack are either added on
 * or reduced by one, depending on if they are on the right or
 * on the left side of the stack.
 *  
 * If you are using this algorithm in your code please add
 * the following line:
 * Stack Blur Algorithm by Mario Klingemann <[email protected]>
 */

public Bitmap fastblur(Bitmap sentBitmap, float scale, int radius) {

    int width = Math.round(sentBitmap.getWidth() * scale);
    int height = Math.round(sentBitmap.getHeight() * scale);
    sentBitmap = Bitmap.createScaledBitmap(sentBitmap, width, height, false);

    Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

    if (radius < 1) {
        return (null);
    }

    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    int[] pix = new int[w * h];
    Log.e("pix", w + " " + h + " " + pix.length);
    bitmap.getPixels(pix, 0, w, 0, 0, w, h);

    int wm = w - 1;
    int hm = h - 1;
    int wh = w * h;
    int div = radius + radius + 1;

    int r[] = new int[wh];
    int g[] = new int[wh];
    int b[] = new int[wh];
    int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
    int vmin[] = new int[Math.max(w, h)];

    int divsum = (div + 1) >> 1;
    divsum *= divsum;
    int dv[] = new int[256 * divsum];
    for (i = 0; i < 256 * divsum; i++) {
        dv[i] = (i / divsum);
    }

    yw = yi = 0;

    int[][] stack = new int[div][3];
    int stackpointer;
    int stackstart;
    int[] sir;
    int rbs;
    int r1 = radius + 1;
    int routsum, goutsum, boutsum;
    int rinsum, ginsum, binsum;

    for (y = 0; y < h; y++) {
        rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
        for (i = -radius; i <= radius; i++) {
            p = pix[yi + Math.min(wm, Math.max(i, 0))];
            sir = stack[i + radius];
            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);
            rbs = r1 - Math.abs(i);
            rsum += sir[0] * rbs;
            gsum += sir[1] * rbs;
            bsum += sir[2] * rbs;
            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
            }
        }
        stackpointer = radius;

        for (x = 0; x < w; x++) {

            r[yi] = dv[rsum];
            g[yi] = dv[gsum];
            b[yi] = dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];

            if (y == 0) {
                vmin[x] = Math.min(x + radius + 1, wm);
            }
            p = pix[yw + vmin[x]];

            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[(stackpointer) % div];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];

            yi++;
        }
        yw += w;
    }
    for (x = 0; x < w; x++) {
        rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
        yp = -radius * w;
        for (i = -radius; i <= radius; i++) {
            yi = Math.max(0, yp) + x;

            sir = stack[i + radius];

            sir[0] = r[yi];
            sir[1] = g[yi];
            sir[2] = b[yi];

            rbs = r1 - Math.abs(i);

            rsum += r[yi] * rbs;
            gsum += g[yi] * rbs;
            bsum += b[yi] * rbs;

            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
            }

            if (i < hm) {
                yp += w;
            }
        }
        yi = x;
        stackpointer = radius;
        for (y = 0; y < h; y++) {
            // Preserve alpha channel: ( 0xff000000 & pix[yi] )
            pix[yi] = ( 0xff000000 & pix[yi] ) | ( dv[rsum] << 16 ) | ( dv[gsum] << 8 ) | dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];

            if (x == 0) {
                vmin[y] = Math.min(y + r1, hm) * w;
            }
            p = x + vmin[y];

            sir[0] = r[p];
            sir[1] = g[p];
            sir[2] = b[p];

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[stackpointer];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];

            yi += w;
        }
    }

    Log.e("pix", w + " " + h + " " + pix.length);
    bitmap.setPixels(pix, 0, w, 0, 0, w, h);

    return (bitmap);
}

If you have the options -H and -n available (man grep is your friend):

$ cat file
foo
bar
foobar

$ grep -H foo file
file:foo
file:foobar

$ grep -Hn foo file
file:1:foo
file:3:foobar

Options:

-H, --with-filename

Print the file name for each match. This is the default when there is more than one file to search.

-n, --line-number

Prefix each line of output with the 1-based line number within its input file. (-n is specified by POSIX.)

-H is a GNU extension, but -n is specified by POSIX

To resolve this issue is simple. First Close, the Visual Studio and open the Windows Explorer, Go to location folder .vs and open folder properties and check the option hidden

I'd install Tortoise Hg (a free GUI for Mercurial) and use that. You can then just right-click on a revision you might want to return to - with all the commit messages there in front of your eyes - and 'Revert all files'. Makes it intuitive and easy to roll backwards and forwards between versions of a fileset, which can be really useful if you are looking to establish when a problem first appeared.

defaultMember already is an alias - it doesn't need to be the name of the exported function/thing. Just do

import alias from 'my-module';

Alternatively you can do

import {default as alias} from 'my-module';

but that's rather esoteric.

You cannot style a variable such as $ip['countryName']

You can only style elements like p,div, etc, or classes and ids.

If you want to style $ip['countryName'] there are several ways.

You can echo it within an element:

echo '<p id="style">'.$ip['countryName'].'</p>';
echo '<span id="style">'.$ip['countryName'].'</span>';
echo '<div id="style">'.$ip['countryName'].'</div>';

If you want to style both the variables the same style, then set a class like:

echo '<p class="style">'.$ip['cityName'].'</p>';
echo '<p class="style">'.$ip['countryName'].'</p>';

You could also embed the variables within your actual html rather than echoing them out within the code.

$city = $ip['cityName'];  
$country = $ip['countryName'];
?>
<div class="style"><?php echo $city ?></div>
<div class="style"><?php echo $country?></div>

It's compiling because printf isn't type safe, since it uses variable arguments in the C sense¹. printf has no option for std::string, only a C-style string. Using something else in place of what it expects definitely won't give you the results you want. It's actually undefined behaviour, so anything at all could happen.

The easiest way to fix this, since you're using C++, is printing it normally with std::cout, since std::string supports that through operator overloading:

std::cout << "Follow this command: " << myString;

If, for some reason, you need to extract the C-style string, you can use the c_str() method of std::string to get a const char * that is null-terminated. Using your example:

#include <iostream>
#include <string>
#include <stdio.h>

int main()
{
    using namespace std;

    string myString = "Press ENTER to quit program!";
    cout << "Come up and C++ me some time." << endl;
    printf("Follow this command: %s", myString.c_str()); //note the use of c_str
    cin.get();

    return 0;
}

If you want a function that is like printf, but type safe, look into variadic templates (C++11, supported on all major compilers as of MSVC12). You can find an example of one here. There's nothing I know of implemented like that in the standard library, but there might be in Boost, specifically boost::format.

[1]: This means that you can pass any number of arguments, but the function relies on you to tell it the number and types of those arguments. In the case of printf, that means a string with encoded type information like %d meaning int. If you lie about the type or number, the function has no standard way of knowing, although some compilers have the ability to check and give warnings when you lie.

It is likely a case of IIS 7 'handling' the HTTP OPTIONS response instead of your application specifying it. To determine this, in IIS7,

1. Go to your site's Handler Mappings.

2. Scroll down to 'OPTIONSVerbHandler'.

3. Change the 'ProtocolSupportModule' to 'IsapiHandler'

4. Set the executable: %windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll

Now, your config entries above should kick in when an HTTP OPTIONS verb is sent.

Alternatively you can respond to the HTTP OPTIONS verb in your BeginRequest method.

    protected void Application_BeginRequest(object sender,EventArgs e)
    {
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

        if(HttpContext.Current.Request.HttpMethod == "OPTIONS")
        {
            //These headers are handling the "pre-flight" OPTIONS call sent by the browser
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
            HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000" );
            HttpContext.Current.Response.End();
        }

    }

I just want to add, if someone wants to copy two different inputs to clipboard. I also used the technique of putting it to a variable then put the text of the variable from the two inputs into a text area.

Note: the code below is from a user asking how to copy multiple user inputs into clipboard. I just fixed it to work correctly. So expect some old style like the use of var instead of let or const. I also recommend to use addEventListener for the button.

    function doCopy() {_x000D_
_x000D_
        try{_x000D_
            var unique = document.querySelectorAll('.unique');_x000D_
            var msg ="";_x000D_
_x000D_
            unique.forEach(function (unique) {_x000D_
                msg+=unique.value;_x000D_
            });_x000D_
_x000D_
            var temp =document.createElement("textarea");_x000D_
            var tempMsg = document.createTextNode(msg);_x000D_
            temp.appendChild(tempMsg);_x000D_
_x000D_
            document.body.appendChild(temp);_x000D_
            temp.select();_x000D_
            document.execCommand("copy");_x000D_
            document.body.removeChild(temp);_x000D_
            console.log("Success!")_x000D_
_x000D_
_x000D_
        }_x000D_
        catch(err) {_x000D_
_x000D_
            console.log("There was an error copying");_x000D_
        }_x000D_
    }

<input type="text" class="unique" size="9" value="SESA / D-ID:" readonly/>_x000D_
<input type="text" class="unique" size="18" value="">_x000D_
<button id="copybtn" onclick="doCopy()"> Copy to clipboard </button>

If using latest Git,

git merge --abort

else this will do the job in older git versions

git reset --merge

or

git reset --hard

Simply delete that column using: del df['column_name']

You need to look at the return value of the call to showConfirmDialog. I.E.:

int dialogResult = JOptionPane.showConfirmDialog (null, "Would You Like to Save your Previous Note First?","Warning",dialogButton);
if(dialogResult == JOptionPane.YES_OPTION){
  // Saving code here
}

You were testing against dialogButton, which you were using to set the buttons that should be displayed by the dialog, and this variable was never updated - so dialogButton would never have been anything other than JOptionPane.YES_NO_OPTION.

Per the Javadoc for showConfirmDialog:

Returns: an integer indicating the option selected by the user

Those look much like Bonjour / mDNS requests to me. Those packets use multicast IP address 224.0.0.251 and port 5353.

The most likely source for this is Apple iTunes, which comes pre-installed on Mac computers (and is a popular install on Windows machines as well). Apple iTunes uses it to discover other iTunes-compatible devices in the same WiFi network.

mDNS is also used (primarily by Apple's Mac and iOS devices) to discover mDNS-compatible devices such as printers on the same network.

If this is a Linux box instead, it's probably the Avahi daemon then. Avahi is ZeroConf/Bonjour compatible and installed by default, but if you don't use DNS-SD or mDNS, it can be disabled.

This is the only solution that worked for me:

var app = angular.module('plunker', ['ngSanitize']);

app.controller('MainCtrl', function($scope, $sce) {
  $scope.trustSrc = function(src) {
    return $sce.trustAsResourceUrl(src);
  }

  $scope.movie = {src:"http://www.youtube.com/embed/Lx7ycjC8qjE", title:"Egghead.io AngularJS Binding"};
});

Then in an iframe:

<iframe class="youtube-player" type="text/html" width="640" height="385"
        ng-src="{{trustSrc(movie.src)}}" allowfullscreen frameborder="0">
</iframe>

http://plnkr.co/edit/tYq22VjwB10WmytQO9Pb?p=preview

If you only want to log the query, then add 'logger' and 'profileSQL' to the jdbc url:

&logger=com.mysql.jdbc.log.Slf4JLogger&profileSQL=true

Then you will get the SQL statement below:

2016-01-14 10:09:43  INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 1 connection: 19130945 statement: 999 resultset: 0
2016-01-14 10:09:43  INFO MySQL - QUERY created: Thu Jan 14 10:09:43 CST 2016 duration: 1 connection: 19130945 statement: 999 resultset: 0 message: SET sql_mode='NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES'
2016-01-14 10:09:43  INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 1 connection: 19130945 statement: 999 resultset: 0
2016-01-14 10:09:43  INFO MySQL - QUERY created: Thu Jan 14 10:09:43 CST 2016 duration: 2 connection: 19130945 statement: 13 resultset: 17 message: select 1
2016-01-14 10:09:43  INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 0 connection: 19130945 statement: 13 resultset: 17
2016-01-14 10:09:43  INFO MySQL - QUERY created: Thu Jan 14 10:09:43 CST 2016 duration: 1 connection: 19130945 statement: 15 resultset: 18 message: select @@session.tx_read_only
2016-01-14 10:09:43  INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 0 connection: 19130945 statement: 15 resultset: 18
2016-01-14 10:09:43  INFO MySQL - QUERY created: Thu Jan 14 10:09:43 CST 2016 duration: 2 connection: 19130945 statement: 14 resultset: 0 message: update sequence set seq=seq+incr where name='demo' and seq=4602
2016-01-14 10:09:43  INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 0 connection: 19130945 statement: 14 resultset: 0

The default logger is:

com.mysql.jdbc.log.StandardLogger

Mysql jdbc property list: https://dev.mysql.com/doc/connector-j/en/connector-j-reference-configuration-properties.html

If this is just a one-off exercise, as an easier alternative, you could apply filters to your source data, and then copy and paste the filtered rows into your new worksheet?

It should also be mentioned that <span> tags allow inside them -- block-level items negate MD natively inside them unless you configure them not to do so, but in-line styles natively allow MD within them. As such, I often do something akin to...

This is a superfluous paragraph thing.

<span class="class-red">And thus I delve into my topic, Lorem ipsum lollipop bubblegum.</span>

And thus with that I conclude.

I am not 100% sure if this is universal but seems to be the case in all MD editors I've used.

I'm using Mac & the best way that worked for me is using pyenv!

The commands below are for Mac but pretty similar to Linux (see the links below)

#Install pyenv
brew update
brew install pyenv

Let's say you have python 3.6 as your primary version on your mac:

python --version 

Output:

Python <your current version>

Now Install python 3.7, first list all

pyenv install -l

Let's take 3.7.3:

pyenv install 3.7.3

Make sure to run this in the Terminal (add it to ~/.bashrc or ~/.zshrc):

export PATH="/Users/username/.pyenv:$PATH"
eval "$(pyenv init -)"

Now let's run it only on the opened terminal/shell:

pyenv shell 3.7.3

Now run

python --version

Output:

Python 3.7.3

And not less important unset it in the opened shell/iTerm:

pyenv shell --unset

You can run it globally or locally as well

'NO COMMENT

I use MDI quite a lot, I like it much more (where it can be used) than multiple floating forms.

But to get the best from it you need to get to grips with your own events. It makes life so much easier for you.

A skeletal example.

Have your own interupt types,

//Clock, Stock and Accoubts represent the actual forms in
//the MDI application. When I have multiple copies of a form
//I also give them an ID, at the time they are created, then
//include that ID in the Args class.
public enum InteruptSource
{
    IS_CLOCK = 0, IS_STOCKS, IS_ACCOUNTS
}
//This particular event type is time based,
//but you can add others to it, such as document
//based.
public enum EVInterupts
{
    CI_NEWDAY = 0, CI_NEWMONTH, CI_NEWYEAR, CI_PAYDAY, CI_STOCKPAYOUT, 
   CI_STOCKIN, DO_NEWEMAIL, DO_SAVETOARCHIVE
}

Then your own Args type

public class ControlArgs
{
    //MDI form source
    public InteruptSource source { get; set; }
    //Interrupt type
    public EVInterupts clockInt { get; set; }
    //in this case only a date is needed
    //but normally I include optional data (as if a C UNION type)
    //the form that responds to the event decides if
    //the data is for it.
    public DateTime date { get; set; }
    //CI_STOCKIN
    public StockClass inStock { get; set; }

}

Then use the delegate within your namespace, but outside of a class

namespace MyApplication
{
public delegate void StoreHandler(object sender, ControlArgs e);
  public partial class Form1 : Form
{
  //your main form
}

Now either manually or using the GUI, have the MDIparent respond to the events of the child forms.

But with your owr Args, you can reduce this to a single function. and you can have provision to interupt the interupts, good for debugging, but can be usefull in other ways too.

Just have al of your mdiparent event codes point to the one function,

        calendar.Friday += new StoreHandler(MyEvents);
        calendar.Saturday += new StoreHandler(MyEvents);
        calendar.Sunday += new StoreHandler(MyEvents);
        calendar.PayDay += new StoreHandler(MyEvents);
        calendar.NewYear += new StoreHandler(MyEvents);

A simple switch mechanism is usually enough to pass events on to appropriate forms.

here's an idea... just pull down one full page of results from each of the three and then throw out the 20 least useful ones... this eliminates the large querysets and that way you only sacrifice a little performance instead of a lot

The big thing to get your head around is that the File class tries to represent a view of what Sun like to call "hierarchical pathnames" (basically a path like c:/foo.txt or /usr/muggins). This is why you create files in terms of paths. The operations you are describing are all operations upon this "pathname".

• getPath() fetches the path that the File was created with (../foo.txt)
• getAbsolutePath() fetches the path that the File was created with, but includes information about the current directory if the path is relative (/usr/bobstuff/../foo.txt)
• getCanonicalPath() attempts to fetch a unique representation of the absolute path to the file. This eliminates indirection from ".." and "." references (/usr/foo.txt).

Note I say attempts - in forming a Canonical Path, the VM can throw an IOException. This usually occurs because it is performing some filesystem operations, any one of which could fail.

i had the same error while working with hibernate, i had added below dependency in my pom.xml that solved the problem

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.10</version>
    </dependency>

reference https://mvnrepository.com/artifact/org.slf4j/slf4j-api

An ultimate way to use jQuery:

Leave the original input field hidden from the screen.

$("#Password").hide(); //Hide it first
var old_id = $("#Password").attr("id"); //Store ID of hidden input for later use
$("#Password").attr("id","Password_hidden"); //Change ID for hidden input

Create new input field on the fly by JavaScript.

var new_input = document.createElement("input");

Migrate the ID and value from hidden input field to the new input field.

new_input.setAttribute("id", old_id); //Assign old hidden input ID to new input
new_input.setAttribute("type","text"); //Set proper type
new_input.value = $("#Password_hidden").val(); //Transfer the value to new input
$("#Password_hidden").after(new_input); //Add new input right behind the hidden input

To get around the error on IE like type property cannot be changed, you may find this useful as belows:

Attach click/focus/change event to new input element, in order to trigger the same event on hidden input.

$(new_input).click(function(){$("#Password_hidden").click();});
//Replicate above line for all other events like focus, change and so on...

Old hidden input element is still inside the DOM so will react with the event triggered by new input element. As ID is swapped, new input element will act like the old one and respond to any function call to old hidden input's ID, but looks different.

A little bit tricky but WORKS!!! ;-)

The comma separated list option is the easiest but becomes challenging if the values could include commas.

Here is an example of the a.1, a.2, ... approach:

for (String value : getPropertyList(prop, "a"))
{
    System.out.println(value);
}

public static List<String> getPropertyList(Properties properties, String name) 
{
    List<String> result = new ArrayList<String>();
    for (Map.Entry<Object, Object> entry : properties.entrySet())
    {
        if (((String)entry.getKey()).matches("^" + Pattern.quote(name) + "\\.\\d+$"))
        {
            result.add((String) entry.getValue());
        }
    }
    return result;
}

For creating a hashing table from scratch, all the values has to set to "None" and modified once a requirement arises. Hashable objects refers to the modifiable datatypes(Dictionary,lists etc). Sets on the other hand cannot be reinitialized once assigned, so sets are non hashable. Whereas, The variant of set() -- frozenset() -- is hashable.

"volatile" does not replace Interlocked.Increment! It just makes sure that the variable is not cached, but used directly.

Incrementing a variable requires actually three operations:

1. read
2. increment
3. write

Interlocked.Increment performs all three parts as a single atomic operation.

You have two choices:

1. Use fileno() to obtain the file descriptor associated with the stdio stream pointer

2. Don't use <stdio.h> at all, that way you don't need to worry about flush either - all writes will go to the device immediately, and for character devices the write() call won't even return until the lower-level IO has completed (in theory).

For device-level IO I'd say it's pretty unusual to use stdio. I'd strongly recommend using the lower-level open(), read() and write() functions instead (based on your later reply):

int fd = open("/dev/i2c", O_RDWR);
ioctl(fd, IOCTL_COMMAND, args);
write(fd, buf, length);

This worked for me (i wanted to make id primary and set auto increment)

ALTER TABLE table_name CHANGE id id INT PRIMARY KEY AUTO_INCREMENT;

Swift 4.2+

Swift 4.2 shipped with Xcode 10 introduces new easy-to-use random functions for many data types. You can call the random() method on numeric types.

let randomInt = Int.random(in: 0..<6)
let randomDouble = Double.random(in: 2.71828...3.14159)
let randomBool = Bool.random()

If you REALLY want to brute force it, try this, but it will take you a ridiculous amount of time:

your_list = 'abcdefghijklmnopqrstuvwxyz'
complete_list = []
for current in xrange(10):
    a = [i for i in your_list]
    for y in xrange(current):
        a = [x+i for i in your_list for x in a]
    complete_list = complete_list+a

On a smaller example, where list = 'ab' and we only go up to 5, this prints the following:

['a', 'b', 'aa', 'ba', 'ab', 'bb', 'aaa', 'baa', 'aba', 'bba', 'aab', 'bab', 'abb', 'bbb', 'aaaa', 'baaa', 'abaa', 'bbaa', 'aaba', 'baba', 'abba', 'bbba', 'aaab', 'baab', 'abab', 'bbab', 'aabb', 'babb', 'abbb', 'bbbb', 'aaaaa', 'baaaa', 'abaaa', 'bbaaa', 'aabaa', 'babaa', 'abbaa', 'bbbaa', 'aaaba','baaba', 'ababa', 'bbaba', 'aabba', 'babba', 'abbba', 'bbbba', 'aaaab', 'baaab', 'abaab', 'bbaab', 'aabab', 'babab', 'abbab', 'bbbab', 'aaabb', 'baabb', 'ababb', 'bbabb', 'aabbb', 'babbb', 'abbbb', 'bbbbb']

Sometimes, due to the heavy size of the script and data, we encounter this type of error. Server needs sufficient memory to execute and give the result. We can simply increase the memory size, per query.

You just need to go to the sql server properties > Memory tab (left side)> Now set the maximum memory limit you want to add.

Also, there is an option at the top, "Results to text", which consume less memory as compare to option "Results to grid", we can also go for Result to Text for less memory execution.

Filename=url.java

public class url {

    public static final String BASEURL = "http://192.168.1.122/";

}

if u want to call the variable just use this:

url.BASEURL + "your code here";

It is most accurate to say that methods with a Bang! are the more dangerous or surprising version. There are many methods that mutate without a Bang such as .destroy and in general methods only have bangs where a safer alternative exists in the core lib.

For instance, on Array we have .compact and .compact!, both methods mutate the array, but .compact! returns nil instead of self if there are no nil's in the array, which is more surprising than just returning self.

The only non-mutating method I've found with a bang is Kernel's .exit! which is more surprising than .exit because you cannot catch SystemExit while the process is closing.

Rails and ActiveRecord continues this trend in that it uses bang for more 'surprising' effects like .create! which raises errors on failure.

You need to apply DATE_FORMAT in the SELECT clause, not the WHERE clause:

SELECT  DATE_FORMAT(create_date, '%m/%d/%Y')
FROM    mytable
WHERE   create_date BETWEEN CURDATE() - INTERVAL 30 DAY AND CURDATE()

Also note that CURDATE() returns only the DATE portion of the date, so if you store create_date as a DATETIME with the time portion filled, this query will not select the today's records.

In this case, you'll need to use NOW instead:

SELECT  DATE_FORMAT(create_date, '%m/%d/%Y')
FROM    mytable
WHERE   create_date BETWEEN NOW() - INTERVAL 30 DAY AND NOW()

I have tried different kinds of maps and the Conversion Box worked. I have used your map and have pasted an example below with some inner maps. Hope it is helpful to you ....

import java.util.HashMap;
import java.util.Map;

import cjm.component.cb.map.ToMap;
import cjm.component.cb.xml.ToXML;

public class Testing
{
public static void main(String[] args)
{
    try
    {
        Map<String, Object> map = new HashMap<String, Object>(); // ORIGINAL MAP

        map.put("name", "chris");
        map.put("island", "faranga");

        Map<String, String> mapInner = new HashMap<String, String>(); // SAMPLE INNER MAP

        mapInner.put("a", "A");
        mapInner.put("b", "B");
        mapInner.put("c", "C");

        map.put("innerMap", mapInner);

        Map<String, Object> mapRoot = new HashMap<String, Object>(); // ROOT MAP

        mapRoot.put("ROOT", map);

        System.out.println("Map: " + mapRoot);

        System.out.println();

        ToXML toXML = new ToXML();

        String convertedXML = String.valueOf(toXML.convertToXML(mapRoot, true)); // CONVERTING ROOT MAP TO XML

        System.out.println("Converted XML: " + convertedXML);

        System.out.println();

        ToMap toMap = new ToMap();

        Map<String, Object> convertedMap = toMap.convertToMap(convertedXML); // CONVERTING CONVERTED XML BACK TO MAP

        System.out.println("Converted Map: " + convertedMap);
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}
}

Output:

Map: {ROOT={name=chris, innerMap={b=B, c=C, a=A}, island=faranga}}

 -------- Map Detected -------- 
 -------- XML created Successfully -------- 
Converted XML: <ROOT><name>chris</name><innerMap><b>B</b><c>C</c><a>A</a></innerMap><island>faranga</island></ROOT>

 -------- XML Detected -------- 
 -------- Map created Successfully -------- 
Converted Map: {ROOT={name=chris, innerMap={b=B, c=C, a=A}, island=faranga}}

You might want to try the full login command:

mysql -h host -u root -p 

where host would be 127.0.0.1.

Do this just to make sure cooperation exists.

Using mysql -u root -p allows me to do a a lot of database searching, but refuses any database creation due to a path setting.

I posted some code in answer to a related question on StackOverflow:

Sorting a multidimensionnal array in VBA

The code samples in that thread include:

1. A vector array Quicksort;
2. A multi-column array QuickSort;
3. A BubbleSort.

Alain's optimised Quicksort is very shiny: I just did a basic split-and-recurse, but the code sample above has a 'gating' function that cuts down on redundant comparisons of duplicated values. On the other hand, I code for Excel, and there's a bit more in the way of defensive coding - be warned, you'll need it if your array contains the pernicious 'Empty()' variant, which will break your While... Wend comparison operators and trap your code in an infinite loop.

Note that quicksort algorthms - and any recursive algorithm - can fill the stack and crash Excel. If your array has fewer than 1024 members, I'd use a rudimentary BubbleSort.

Public Sub QuickSortArray(ByRef SortArray As Variant, _
                                Optional lngMin As Long = -1, _ 
                                Optional lngMax As Long = -1, _ 
                                Optional lngColumn As Long = 0)
On Error Resume Next

'Sort a 2-Dimensional array

' Sample Usage: sort arrData by the contents of column 3
'
'   QuickSortArray arrData, , , 3

'
'Posted by Jim Rech 10/20/98 Excel.Programming

'Modifications, Nigel Heffernan:

'       ' Escape failed comparison with empty variant
'       ' Defensive coding: check inputs

Dim i           As Long
Dim j           As Long
Dim varMid      As Variant
Dim arrRowTemp  As Variant
Dim lngColTemp  As Long


 If IsEmpty(SortArray) Then
     Exit Sub
 End If

 If InStr(TypeName(SortArray), "()") < 1 Then  'IsArray() is somewhat broken:  Look for brackets in the type name
     Exit Sub
 End If

 If lngMin = -1 Then
     lngMin = LBound(SortArray, 1)
 End If
 
 If lngMax = -1 Then
     lngMax = UBound(SortArray, 1)
 End If
 
 If lngMin >= lngMax Then ' no sorting required
     Exit Sub
 End If


 i = lngMin
 j = lngMax

 varMid = Empty
 varMid = SortArray((lngMin + lngMax) \ 2, lngColumn)

 ' We  send 'Empty' and invalid data items to the end of the list:
 If IsObject(varMid) Then  ' note that we don't check isObject(SortArray(n)) - varMid might pick up a valid default member or property
     i = lngMax
     j = lngMin
 ElseIf IsEmpty(varMid) Then
     i = lngMax
     j = lngMin
 ElseIf IsNull(varMid) Then
     i = lngMax
     j = lngMin
 ElseIf varMid = "" Then
     i = lngMax
     j = lngMin
 ElseIf varType(varMid) = vbError Then
     i = lngMax
     j = lngMin
 ElseIf varType(varMid) > 17 Then
     i = lngMax
     j = lngMin
 End If


 While i <= j

     While SortArray(i, lngColumn) < varMid And i < lngMax
         i = i + 1
     Wend

     While varMid < SortArray(j, lngColumn) And j > lngMin
         j = j - 1
     Wend


     If i <= j Then

         ' Swap the rows
         ReDim arrRowTemp(LBound(SortArray, 2) To UBound(SortArray, 2))
         For lngColTemp = LBound(SortArray, 2) To UBound(SortArray, 2)
             arrRowTemp(lngColTemp) = SortArray(i, lngColTemp)
             SortArray(i, lngColTemp) = SortArray(j, lngColTemp)
             SortArray(j, lngColTemp) = arrRowTemp(lngColTemp)
         Next lngColTemp
         Erase arrRowTemp

         i = i + 1
         j = j - 1

     End If


 Wend

 If (lngMin < j) Then Call QuickSortArray(SortArray, lngMin, j, lngColumn)
 If (i < lngMax) Then Call QuickSortArray(SortArray, i, lngMax, lngColumn)

 
End Sub

list.insert with any index >= len(of_the_list) places the value at the end of list. It behaves like append

Python 3.7.4
>>>lst=[10,20,30]
>>>lst.insert(len(lst), 101)
>>>lst
[10, 20, 30, 101]
>>>lst.insert(len(lst)+50, 202)
>>>lst
[10, 20, 30, 101, 202]

Time complexity, append O(1), insert O(n)

PowerShell solution

Using Posh-SSH:

New-SSHSession -ComputerName 0.0.0.0 -Credential $cred | Out-Null
Invoke-SSHCommand -SessionId 1 -Command "nohup sleep 5 >> abs.log &" | Out-Null

Using Query parameter

<a href="edit.jsp?userId=${user.id}" />  

Using Hidden variable .

<form method="post" action="update.jsp">  
...  
   <input type="hidden" name="userId" value="${user.id}">  

you can send Using Session object.

   session.setAttribute("userId", userid);

These values will now be available from any jsp as long as your session is still active.

   int userid = session.getAttribute("userId"); 

Yes! Any class in Java can have multiple main methods. It's called Overloading (Overloaded methods are methods with same name but with different signatures) but there should only be one main method with parameters like this :- (String[] args) or (String args[])

For example :-public class E {

public static void main(String args){
    System.out.println("Print A");
}
public static void main(String [] args){
    System.out.println("Print B");
}
public static void main(int garbage){
    System.out.println("Print C");
}
public static void main(int i){
    System.out.println("Print D")
}

}

The output of the above program will be "Print B" as only that main method contains the correct method signature identified by the Javac compiler and it compiles that only and leaves the rest.

You should really use the Literal ASP.NET control for that.

Below is the pseudocode that may help you:

public  String getBase64FromFile(String path)
{
    Bitmap bmp = null;
    ByteArrayOutputStream baos = null;
    byte[] baat = null;
    String encodeString = null;
    try
    {
        bmp = BitmapFactory.decodeFile(path);
        baos = new ByteArrayOutputStream();
        bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        baat = baos.toByteArray();
        encodeString = Base64.encodeToString(baat, Base64.DEFAULT);
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }

   return encodeString;
}

I configured mine as following since I found ctrl+` is a bit hard to press.

{
  "key": "ctrl+k",
  "command": "workbench.action.focusActiveEditorGroup",
  "when": "terminalFocus"
},
{
  "key": "ctrl+j",
  "command": "workbench.action.terminal.focus",
  "when": "!terminalFocus"
}

I also configured the following to move between editor group.

{
  "key": "ctrl+h",
  "command": "workbench.action.focusPreviousGroup",
  "when": "!terminalFocus"
},
{
  "key": "ctrl+l",
  "command": "workbench.action.focusNextGroup",
  "when": "!terminalFocus"
}

By the way, I configured Caps Lock to ctrl on Mac from the System Preferences => keyboard =>Modifier Keys.

Just discovered that AlertDialogs's boolean cancel(...); I've been using everywhere actually does nothing. Great.
So...

public class MyTask extends AsyncTask<Void, Void, Void> {

    private volatile boolean running = true;
    private final ProgressDialog progressDialog;

    public MyTask(Context ctx) {
        progressDialog = gimmeOne(ctx);

        progressDialog.setCancelable(true);
        progressDialog.setOnCancelListener(new OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialog) {
                // actually could set running = false; right here, but I'll
                // stick to contract.
                cancel(true);
            }
        });

    }

    @Override
    protected void onPreExecute() {
        progressDialog.show();
    }

    @Override
    protected void onCancelled() {
        running = false;
    }

    @Override
    protected Void doInBackground(Void... params) {

        while (running) {
            // does the hard work
        }
        return null;
    }

    // ...

}

As JGuo and CorySimmons mentioned, you can use the clickable behaviour of a stylable label, hiding the less flexible file input element.

<!DOCTYPE html>
<html>
<head>
<title>Custom file input</title>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
</head>

<body>

<label for="upload-file" class="btn btn-info"> Choose file... </label>
<input id="upload-file" type="file" style="display: none"
onchange="this.nextElementSibling.textContent = this.previousElementSibling.title = this.files[0].name">
<div></div>

</body>
</html>

Try this code refer from here

<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js">
</script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/jstimezonedetect/1.0.4/jstz.min.js">
</script>
<script type="text/javascript">
  $(document).ready(function(){
    var tz = jstz.determine(); // Determines the time zone of the browser client
    var timezone = tz.name(); //'Asia/Kolhata' for Indian Time.

    alert(timezone);
});
</script>

Array has a length property :

[].length // 0
[0].length // 1
[4, 8, 15, 16, 23, 42].length // 6

You can get free Virtual Machine and many more things online for 3 months provided by Microsoft Azure. I guess you need VPN for learning purpose. For that it would suffice.

Refer http://www.windowsazure.com/en-us/pricing/free-trial/

Use int(@array) as it threats the argument as scalar.

In package.json file. change file like this

"scripts":{ 
   "start": "node ./bin/www", 
   "start-dev": "nodemon ./app.js"
 },

and then execute npm run start-dev

you can just use post to post your json.

values := map[string]string{"username": username, "password": password}

jsonValue, _ := json.Marshal(values)

resp, err := http.Post(authAuthenticatorUrl, "application/json", bytes.NewBuffer(jsonValue))

You can try use this function to find any object in nested nested array of arrays of kings.

Example

function findTByKeyValue (element, target){
        var found = true;
        for(var key in target) { 
            if (!element.hasOwnProperty(key) || element[key] !== target[key])   { 
                found = false;
                break;
            }
        }
        if(found) {
            return element;
        }
        if(typeof(element) !== "object") { 
            return false;
        }
        for(var index in element) { 
            var result = findTByKeyValue(element[index],target);
            if(result) { 
                return result; 
            }
        } 
    };

findTByKeyValue(problems,{"name":"somethingElse","strength":"500 mg"}) =====> result equal to object associatedDrug#2

Swift 2.0 :

let image = UIImage(named: "imageName")
let newSize = CGSize(width: 10, height: 10)

UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0)
image?.drawInRect(CGRectMake(0, 0, newSize.width, newSize.height))
let imageResized = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()

After encountering this issue and tried different method of adding the entity packaname name to EntityScan, ComponentScan etc, none of it worked.

Added the package to packageScan config in the EntityManagerFactory of the repository config. The below code gives the code based configuration as opposed to XML based ones answered above.

@Primary
@Bean(name = "entityManagerFactory")
public EntityManagerFactory entityManagerFactory() {
    LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
    emf.setDataSource(dataSource);
    emf.setJpaVendorAdapter(jpaVendorAdapter);
    emf.setPackagesToScan("org.package.entity");
    emf.setPersistenceUnitName("default"); 
    emf.afterPropertiesSet();
    return emf.getObject();
}

Add -lrt to the end of g++ command line. This links in the librt.so "Real Time" shared library.

After some research and testing, I found that I had some misunderstandings about the lifetime of Docker containers. Simply restarting a container doesn't make Docker use a new image, when the image was rebuilt in the meantime. Instead, Docker is fetching the image only before creating the container. So the state after running a container is persistent.

Why removing is required

Therefore, rebuilding and restarting isn't enough. I thought containers works like a service: Stopping the service, do your changes, restart it and they would apply. That was my biggest mistake.

Because containers are permanent, you have to remove them using docker rm <ContainerName> first. After a container is removed, you can't simply start it by docker start. This has to be done using docker run, which itself uses the latest image for creating a new container-instance.

Containers should be as independent as possible

With this knowledge, it's comprehensible why storing data in containers is qualified as bad practice and Docker recommends data volumes/mounting host directorys instead: Since a container has to be destroyed to update applications, the stored data inside would be lost too. This cause extra work to shutdown services, backup data and so on.

So it's a smart solution to exclude those data completely from the container: We don't have to worry about our data, when its stored safely on the host and the container only holds the application itself.

Why -rf may not really help you

The docker run command, has a Clean up switch called -rf. It will stop the behavior of keeping docker containers permanently. Using -rf, Docker will destroy the container after it has been exited. But this switch has two problems:

1. Docker also remove the volumes without a name associated with the container, which may kill your data
2. Using this option, its not possible to run containers in the background using -d switch

While the -rf switch is a good option to save work during development for quick tests, it's less suitable in production. Especially because of the missing option to run a container in the background, which would mostly be required.

How to remove a container

We can bypass those limitations by simply removing the container:

docker rm --force <ContainerName>

The --force (or -f) switch which use SIGKILL on running containers. Instead, you could also stop the container before:

docker stop <ContainerName>
docker rm <ContainerName>

Both are equal. docker stop is also using SIGTERM. But using --force switch will shorten your script, especially when using CI servers: docker stop throws an error if the container is not running. This would cause Jenkins and many other CI servers to consider the build wrongly as failed. To fix this, you have to check first if the container is running as I did in the question (see containerRunning variable).

Full script for rebuilding a Docker container

According to this new knowledge, I fixed my script in the following way:

#!/bin/bash
imageName=xx:my-image
containerName=my-container

docker build -t $imageName -f Dockerfile  .

echo Delete old container...
docker rm -f $containerName

echo Run new container...
docker run -d -p 5000:5000 --name $containerName $imageName

This works perfectly :)

Use the StringFormat property (or ContentStringFormat on ContentControl and its derivatives, e.g. Label).

<TextBlock Text="{Binding Date, StringFormat={}{0:d}}" />

Note the {} prior to the standard String.Format positional argument notation allows the braces to be escaped in the markup extension language.

The most efficient way:

//Note destroys the original string by removing it's last char
// Do not pass in a string literal.
char * getAllButFirstAndLast(char *input)
{
  int len = strlen(input); 
  if(len > 0)
    input++;//Go past the first char
  if(len > 1)
    input[len - 2] = '\0';//Replace the last char with a null termination
  return input;
}


//...
//Call it like so
char str[512];
strcpy(str, "hello world");
char *pMod = getAllButFirstAndLast(str);

The safest way:

void getAllButFirstAndLast(const char *input, char *output)
{
  int len = strlen(input);
  if(len > 0)
    strcpy(output, ++input);
  if(len > 1)
    output[len - 2] = '\0';
}


//...
//Call it like so
char mod[512];
getAllButFirstAndLast("hello world", mod);

The second way is less efficient but it is safer because you can pass in string literals into input. You could also use strdup for the second way if you didn't want to implement it yourself.

I think this is what you want.

$dayofweek = date('w', strtotime($date));
$result    = date('Y-m-d', strtotime(($day - $dayofweek).' day', strtotime($date)));