Difference between == (equal) and === (identical equal)

PHP provides two comparison operators to check equality of two values. The main difference between of these two is that '==' checks if the values of the two operands are equal or not. On the other hand, '===' checks the values as well as the type of operands are equal or not.

== (Equal)

=== (Identical equal)

Example =>

<?php 
    $val1 = 1234;
    $val2 = "1234";
    var_dump($val1 == $val2);// output => bool(true)
    //It checks only operands value
?> 


<?php 
    $val1 = 1234;
    $val2 = "1234";
    var_dump($val1 === $val2);// output => bool(false)
    //First it checks type then operands value
?> 

if we type cast $val2 to (int)$val2 or (string)$val1 then it returns true

   <?php 
        $val1 = 1234;
        $val2 = "1234";
        var_dump($val1 === (int)$val2);// output => bool(true)
        //First it checks type then operands value
    ?> 

OR

  <?php 
        $val1 = 1234;
        $val2 = "1234";
        var_dump($val1 === (int)$val2);// output => bool(true)
        //First it checks type then operands value
    ?> 

UPDATE test SET a = CONCAT(a, "more text")

Select-Object returns a custom PSObject with just the properties specified. Even with a single property, you don't get the ACTUAL variable; it is wrapped inside the PSObject.

Instead, do:

Get-Date | Select-Object -ExpandProperty DayOfWeek

That will get you the same result as:

(Get-Date).DayOfWeek

The difference is that if Get-Date returns multiple objects, the pipeline way works better than the parenthetical way as (Get-ChildItem), for example, is an array of items. This has changed in PowerShell v3 and (Get-ChildItem).FullPath works as expected and returns an array of just the full paths.

For Swift 3, many Foundation types have dropped the 'NS' prefix, so you'd access it by UUID().uuidString.

Yes, the task gets blocked in the read() system call. Another task which is ready runs, or if no other tasks are ready, the idle task (for that CPU) runs.

A normal, blocking disc read causes the task to enter the "D" state (as others have noted). Such tasks contribute to the load average, even though they're not consuming the CPU.

Some other types of IO, especially ttys and network, do not behave quite the same - the process ends up in "S" state and can be interrupted and doesn't count against the load average.

I just learned something new thanks to Artiso. I gave each module a name in the properties box. These names were also what I declared in the module. When I tried to call my second module, I kept getting an error: Compile error: Expected variable or procedure, not module

After reading Artiso's comment above about not having the same names, I renamed my second module, called it from the first, and problem solved. Interesting stuff! Thanks for the info Artiso!

In case my experience is unclear:

Module Name: AllFSGroupsCY Public Sub AllFSGroupsCY()

Module Name: AllFSGroupsPY Public Sub AllFSGroupsPY()

From AllFSGroupsCY()

Public Sub FSGroupsCY()

    AllFSGroupsPY 'will error each time until the properties name is changed

End Sub

Here is another way to loop through XML elements using JDOM.

        List<Element> nodeNodes = inputNode.getChildren();
        if (nodeNodes != null) {
            for (Element nodeNode : nodeNodes) {
                List<Element> elements = nodeNode.getChildren(elementName);
                if (elements != null) {
                    elements.size();
                    nodeNodes.removeAll(elements);
                }
            }

If I recall correctly Twig doesn't support || and && operators, but requires or and and to be used respectively. I'd also use parentheses to denote the two statements more clearly although this isn't technically a requirement.

{%if ( fields | length > 0 ) or ( trans_fields | length > 0 ) %}

Expressions

Expressions can be used in {% blocks %} and ${ expressions }.

Operator    Description
==          Does the left expression equal the right expression?
+           Convert both arguments into a number and add them.
-           Convert both arguments into a number and substract them.
*           Convert both arguments into a number and multiply them.
/           Convert both arguments into a number and divide them.
%           Convert both arguments into a number and calculate the rest of the integer division.
~           Convert both arguments into a string and concatenate them.
or          True if the left or the right expression is true.
and         True if the left and the right expression is true.
not         Negate the expression.

For more complex operations, it may be best to wrap individual expressions in parentheses to avoid confusion:

{% if (foo and bar) or (fizz and (foo + bar == 3)) %}

Posting this answer for folks wanting to initialize list with POCOs and also coz this is the first thing that pops up in search but all answers only for list of type string.

You can do this two ways one is directly setting the property by setter assignment or much cleaner by creating a constructor that takes in params and sets the properties.

class MObject {        
        public int Code { get; set; }
        public string Org { get; set; }
    }

List<MObject> theList = new List<MObject> { new MObject{ PASCode = 111, Org="Oracle" }, new MObject{ PASCode = 444, Org="MS"} };

OR by parameterized constructor

class MObject {
        public MObject(int code, string org)
        {
            Code = code;
            Org = org;
        }

        public int Code { get; set; }
        public string Org { get; set; }
    }

List<MObject> theList = new List<MObject> {new MObject( 111, "Oracle" ), new MObject(222,"SAP")};


        

When your class implements Comparable, the compareTo method of the class is defining the "natural" ordering of that object. That method is contractually obligated (though not demanded) to be in line with other methods on that object, such as a 0 should always be returned for objects when the .equals() comparisons return true.

A Comparator is its own definition of how to compare two objects, and can be used to compare objects in a way that might not align with the natural ordering.

For example, Strings are generally compared alphabetically. Thus the "a".compareTo("b") would use alphabetical comparisons. If you wanted to compare Strings on length, you would need to write a custom comparator.

In short, there isn't much difference. They are both ends to similar means. In general implement comparable for natural order, (natural order definition is obviously open to interpretation), and write a comparator for other sorting or comparison needs.

If you're just comparing two files to see which is newer then -C should work:

if (-C "file1.txt" > -C "file2.txt") {
{
    /* Update */
}

There's also -M, but I don't think it's what you want. Luckily, it's almost impossible to search for documentation on these file operators via Google.

 <td rowspan="2" style="text-align:left;vertical-align:top;padding:0">Save a lot</td>

That should do it.

Try to nest two setTimeout functions within each other and they will behave multithreaded (ie; the outer timer won't wait for the inner one to complete before executing its function).

You have a couple of options here, I think.

One would be to use a BackgroundWorker. This is a common helper for multithreading in applications. It exposes a DoWork event which is handled on a background thread from the Thread Pool and a RunWorkerCompleted event which is invoked back on the main thread when the background thread completes. It also has the benefit of try/catching the code running on the background thread so that an unhandled exception doesn't kill the application.

If you don't want to go that route, you can use the WPF dispatcher object to invoke an action to update the GUI back onto the main thread. Random reference:

http://www.switchonthecode.com/tutorials/working-with-the-wpf-dispatcher

There are many other options around too, but these are the two most common that come to mind.

For all intents and purposes, C++ supports this via lambdas:¹

int main() {
    auto f = []() { return 42; };
    std::cout << "f() = " << f() << std::endl;
}

Here, f is a lambda object that acts as a local function in main. Captures can be specified to allow the function to access local objects.

Behind the scenes, f is a function object (i.e. an object of a type that provides an operator()). The function object type is created by the compiler based on the lambda.

¹ since C++11

patterns[1]="1\.2\.3\.4.*Has exploded"
patterns[2]="5\.6\.7\.8.*Has died"
patterns[3]="\!9\.10\.11\.12.*Has exploded"

for i in {1..3}
 do
grep "${patterns[$i]}" logfile.log
done

should be the the same as

egrep "(1\.2\.3\.4.*Has exploded|5\.6\.7\.8.*Has died)" logfile.log | egrep -v "9\.10\.11\.12.*Has exploded"    

All the other solutions are creepy because they are from someone that arrogantly simply thinks that English is the only language in the world :)

All those solutions strip also diacritics like ç or à.

The perfect solution, as stated in PHP documentation, is simply:

$clear = strip_tags($des);

Use onclick="this.value=''":

<input name="Name" value="Enter Your Name" onclick="this.value=''">

Important Note: Be aware that if Google Chrome Data Saver is enabled in Chrome's settings, then Autoplay will be disabled.

Try using sed as mentioned on http://linuxcommando.blogspot.com/2008/03/using-sed-to-extract-lines-in-text-file.html. For example use

sed '2,4!d' somefile.txt

to print from the second line to the fourth line of somefile.txt. (And don't forget to check http://www.grymoire.com/Unix/Sed.html, sed is a wonderful tool.)

If you use webpack devServer the simplest way is to set disableHostCheck, check webpack doc like this

devServer: {
    contentBase: path.join(__dirname, './dist'),
    compress: true,
    host: 'localhost',
    // host: '0.0.0.0',
    port: 8080,
    disableHostCheck: true //for ngrok
},

As i've mentioned in other, similar questions, you may want to consider compressing the data as the default java serialization is a bit verbose. you do this by putting a GZIPInput/OutputStream between the Object streams and the Byte streams.

I use this query:

var collection = "countries"; var field = "country"; 
db[collection].distinct(field).forEach(function(value){print(field + ", " + value + ": " + db.hosts.count({[field]: value}))})

Output:

countries, England: 3536
countries, France: 238
countries, Australia: 1044
countries, Spain: 16

This query first distinct all the values, and then count for each one of them the number of occurrences.

One command in git that I think it's much easier to find a string:

git log --pretty=oneline --grep "string to search"

works in Git 2.0.4

TortoiseSVN users: right click on the root project directory > TortoiseSVN > Clean up... (make sure you check all the boxes). This worked for me.

• First, str in Python is represented in Unicode.
• Second, UTF-8 is an encoding standard to encode Unicode string to bytes. There are many encoding standards out there (e.g. UTF-16, ASCII, SHIFT-JIS, etc.).

When the client sends data to your server and they are using UTF-8, they are sending a bunch of bytes not str.

You received a str because the "library" or "framework" that you are using, has implicitly converted some random bytes to str.

Under the hood, there is just a bunch of bytes. You just need ask the "library" to give you the request content in bytes and you will handle the decoding yourself (if library can't give you then it is trying to do black magic then you shouldn't use it).

• Decode UTF-8 encoded bytes to str: bs.decode('utf-8')
• Encode str to UTF-8 bytes: s.encode('utf-8')

Your onCreate() method has several huge flaws:

1) onCreate prepares your Activity - so nothing that you do here will be made visible to the user until this method finishes! For example - you will never be able to alter a TextView's text here more than ONE time as only the last change will be drawn and thus visible to the user!

2) Keep in mind that an Android program will - by default - run in ONE thread only! Thus: never use Thread.sleep() or Thread.wait() in your main thread which is responsible for your UI! (read "Keep your App Responsive" for further information!)

What your initialization of your Activity does is:

• for no reason you create a new TextView object t!
• you pick your layout's TextView in the variable t later.
• you set the text of t (but keep in mind: it will be displayed only after onCreate() finishes and the main event loop of your application runs!)
• you wait for 10 seconds within your onCreate method - this must never be done as it stops all UI activity and will definitely force an ANR (Application Not Responding, see link above!)
• then you set another text - this one will be displayed as soon as your onCreate() method finishes and several other Activity lifecycle methods have been processed!

The solution:

1. Set text only once in onCreate() - this must be the first text that should be visible.

2. Create a Runnable and a Handler

   private final Runnable mUpdateUITimerTask = new Runnable() {
       public void run() {
           // do whatever you want to change here, like:
           t.setText("Second text to display!");
       }
   };
   private final Handler mHandler = new Handler();
   

3. install this runnable as a handler, possible in onCreate() (but read my advice below):

   // run the mUpdateUITimerTask's run() method in 10 seconds from now
   mHandler.postDelayed(mUpdateUITimerTask, 10 * 1000);
   

Advice: be sure you know an Activity's lifecycle! If you do stuff like that in onCreate()this will only happen when your Activity is created the first time! Android will possibly keep your Activity alive for a longer period of time, even if it's not visible! When a user "starts" it again - and it is still existing - you will not see your first text anymore!

=> Always install handlers in onResume() and disable them in onPause()! Otherwise you will get "updates" when your Activity is not visible at all! In your case, if you want to see your first text again when it is re-activated, you must set it in onResume(), not onCreate()!

I had a similar problem (detailed explanation below), and I solved it (in jasmine-core: 2.52) by using the tick function with the same (or greater) amount of milliseconds as in original setTimeout call.

For example, if I had a setTimeout(() => {...}, 2500); (so it will trigger after 2500 ms), I would call tick(2500), and that would solve the problem.

What I had in my component, as a reaction on a Delete button click:

delete() {
    this.myService.delete(this.id)
      .subscribe(
        response => {
          this.message = 'Successfully deleted! Redirecting...';
          setTimeout(() => {
            this.router.navigate(['/home']);
          }, 2500); // I wait for 2.5 seconds before redirect
        });
  }

Her is my working test:

it('should delete the entity', fakeAsync(() => {
    component.id = 1; // preparations..
    component.getEntity(); // this one loads up the entity to my component
    tick(); // make sure that everything that is async is resolved/completed
    expect(myService.getMyThing).toHaveBeenCalledWith(1);
    // more expects here..
    fixture.detectChanges();
    tick();
    fixture.detectChanges();
    const deleteButton = fixture.debugElement.query(By.css('.btn-danger')).nativeElement;
    deleteButton.click(); // I've clicked the button, and now the delete function is called...

    tick(2501); // timeout for redirect is 2500 ms :)  <-- solution

    expect(myService.delete).toHaveBeenCalledWith(1);
    // more expects here..
  }));

P.S. Great explanation on fakeAsync and general asyncs in testing can be found here: a video on Testing strategies with Angular 2 - Julie Ralph, starting from 8:10, lasting 4 minutes :)

Putting the number in a <fieldset> will prevent iOS from converting the number to a link for some reason. In some cases this could be the right solution. I don't advocate a blanket disabling of converting to links.

I compiled and run my code. This is accurate code. You can try it your own.

data = pd.read_excel('file.xlsx')

If you have any special character or space in column name you can write it in '' like in the given code:

data = data[data['expire/t'].notnull()]
print (date)

If there is just a single string column name without any space or special character you can directly access it.

data = data[data.expire ! = 0]
print (date)

yes, using and, like:

@media screen and (max-width: 800px), 
       screen and (max-height: 600px) {
  ...
}

I am getting a similar error. The problem is that the header line is not correct. When I did the following header line, the problem I was having was resolved.

<table id="example" class="table table-striped table-bordered" style="width:100%">
        <thead>
    <tr>
                <th colspan="6">Common Title</th>
            </tr>
            <tr>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Age</th>
                <th>Start date</th>
                <th>Salary</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>Tiger Nixon</td>
                <td>System Architect</td>
                <td>Edinburgh</td>
                <td>61</td>
                <td>2011/04/25</td>
                <td>$320,800</td>
            </tr>
</tbody>
</table>

Culprit is preflight request using OPTIONS method

For HTTP request methods that can cause side-effects on user data (in particular, for HTTP methods other than GET, or for POST usage with certain MIME types), the specification mandates that browsers "preflight" the request, soliciting supported methods from the server with an HTTP OPTIONS request method, and then, upon "approval" from the server, sending the actual request with the actual HTTP request method.

Web specification refer to: https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS

I resolved the problem by adding following lines in Nginx conf.

    location / {
               if ($request_method = OPTIONS ) {
                   add_header Access-Control-Allow-Origin  "*";
                   add_header Access-Control-Allow-Methods "POST, GET, PUT, UPDATE, DELETE, OPTIONS";
                   add_header Access-Control-Allow-Headers "Authorization";
                   add_header Access-Control-Allow-Credentials  "true";
                   add_header Content-Length 0;
                   add_header Content-Type text/plain;
                   return 200;
               }
    location ~ ^/(xxxx)$ {
                if ($request_method = OPTIONS) {
                    rewrite ^(.*)$ / last;
                }
    }

Using CSS:

.button {_x000D_
    display: block;_x000D_
    width: 115px;_x000D_
    height: 25px;_x000D_
    background: #4E9CAF;_x000D_
    padding: 10px;_x000D_
    text-align: center;_x000D_
    border-radius: 5px;_x000D_
    color: white;_x000D_
    font-weight: bold;_x000D_
    line-height: 25px;_x000D_
}

<a class="button">Add Problem</a>

http://jsfiddle.net/GCwQu/

If I understand correctly, you want to see not only classes but also methods, properties and so on. The only tool I know that can do it is Eclipse - if you add a jar to project classpath, you would be able to browse its classes with methods and properties using usual package explorer.

Anyway, this is a good idea for a good standalone Java tool

The difference lies in the fact that ./gradlew indicates you are using a gradle wrapper. The wrapper is generally part of a project and it facilitates installation of gradle. If you were using gradle without the wrapper you would have to manually install it - for example, on a mac brew install gradle and then invoke gradle using the gradle command. In both cases you are using gradle, but the former is more convenient and ensures version consistency across different machines.

Each Wrapper is tied to a specific version of Gradle, so when you first run one of the commands above for a given Gradle version, it will download the corresponding Gradle distribution and use it to execute the build.

Not only does this mean that you don’t have to manually install Gradle yourself, but you are also sure to use the version of Gradle that the build is designed for. This makes your historical builds more reliable

Read more here - https://docs.gradle.org/current/userguide/gradle_wrapper.html

Also, Udacity has a neat, high level video explaining the concept of the gradle wrapper - https://www.youtube.com/watch?v=1aA949H-shk

simplifying the general answer

SQL Case Sensitive String Compare

These examples may be helpful:

Declare @S1 varchar(20) = 'SQL'
Declare @S2 varchar(20) = 'sql'

  
if @S1 = @S2 print 'equal!' else print 'NOT equal!' -- equal (default non-case sensitivity for SQL

if cast(@S1 as binary) = cast(Upper(@S2) as binary) print 'equal!' else print 'NOT equal!' -- equal

if cast(@S1 as binary) = cast(@S2 as binary) print 'equal!' else print 'NOT equal!' -- not equal

if  @S1 COLLATE Latin1_General_CS_AS  = Upper(@S2) COLLATE Latin1_General_CS_AS  print 'equal!' else print 'NOT equal!' -- equal

if  @S1 COLLATE Latin1_General_CS_AS  = @S2 COLLATE Latin1_General_CS_AS  print 'equal!' else print 'NOT equal!' -- not equal

 

The convert is probably more efficient than something like runtime calculation of hashbytes, and I'd expect the collate may be even faster.

SELECT IF((
     SELECT count(*) FROM gdata_calendars 
     WHERE `group` =  ? AND id = ?)
,1,0);

For Detail explanation you can visit here

you'll need to switch to Scala to implement your own operators

pipe example

Bootstrap 3 dropped native support for nested collapsing menus, but there's a way to re-enable it with a 3rd party script. It's called SmartMenus. It means adding three new resources to your page, but it seamlessly supports Bootstrap 3.x with multiple levels of menus for nested <ul>/<li> elements with class="dropdown-menu". It automatically displays the proper caret indicator as well.

<head>
   ...
   <script src=".../jquery.smartmenus.min.js"></script>
   <script src=".../jquery.smartmenus.bootstrap.min.js"></script>
   ...
   <link rel="stylesheet" href=".../jquery.smartmenus.bootstrap.min.css"/>
   ...
</head>

Here's a demo page: http://vadikom.github.io/smartmenus/src/demo/bootstrap-navbar-fixed-top.html

Object creation variants.

Variant 1 : 'new Object()' -> Object constructor without arguments.

var p1 = new Object(); // 'new Object()' create and return empty object -> {}

var p2 = new Object(); // 'new Object()' create and return empty object -> {}

console.log(p1); // empty object -> {}

console.log(p2); // empty object -> {}

// p1 and p2 are pointers to different objects
console.log(p1 === p2); // false

console.log(p1.prototype); // undefined

// empty object which is in fact Object.prototype
console.log(p1.__proto__); // {}

// empty object to which p1.__proto__ points
console.log(Object.prototype); // {}

console.log(p1.__proto__ === Object.prototype); // true

// null, which is in fact Object.prototype.__proto__
console.log(p1.__proto__.__proto__); // null

console.log(Object.prototype.__proto__); // null

Variant 2 : 'new Object(person)' -> Object constructor with argument.

const person = {
    name: 'no name',
    lastName: 'no lastName',
    age: -1
}

// 'new Object(person)' return 'person', which is pointer to the object ->
//  -> { name: 'no name', lastName: 'no lastName', age: -1 }
var p1 = new Object(person);

// 'new Object(person)' return 'person', which is pointer to the object ->
//  -> { name: 'no name', lastName: 'no lastName', age: -1 }
var p2 = new Object(person);

// person, p1 and p2 are pointers to the same object
console.log(p1 === p2); // true
console.log(p1 === person); // true
console.log(p2 === person); // true

p1.name = 'John'; // change 'name' by 'p1'
p2.lastName = 'Doe'; // change 'lastName' by 'p2'
person.age = 25; // change 'age' by 'person'

// when print 'p1', 'p2' and 'person', it's the same result,
// because the object they points is the same
console.log(p1); // { name: 'John', lastName: 'Doe', age: 25 }
console.log(p2); // { name: 'John', lastName: 'Doe', age: 25 }
console.log(person); // { name: 'John', lastName: 'Doe', age: 25 }

Variant 3.1 : 'Object.create(person)'. Use Object.create with simple object 'person'. 'Object.create(person)' will create(and return) new empty object and add property '__proto__' to the same new empty object. This property '__proto__' will point to the object 'person'.

const person = {
        name: 'no name',
        lastName: 'no lastName',
        age: -1,
        getInfo: function getName() {
           return `${this.name} ${this.lastName}, ${this.age}!`;
    }
}

var p1 = Object.create(person);

var p2 = Object.create(person);

// 'p1.__proto__' and 'p2.__proto__' points to
// the same object -> 'person'
// { name: 'no name', lastName: 'no lastName', age: -1, getInfo: [Function: getName] }
console.log(p1.__proto__);
console.log(p2.__proto__);
console.log(p1.__proto__ === p2.__proto__); // true

console.log(person.__proto__); // {}(which is the Object.prototype)

// 'person', 'p1' and 'p2' are different
console.log(p1 === person); // false
console.log(p1 === p2); // false
console.log(p2 === person); // false

// { name: 'no name', lastName: 'no lastName', age: -1, getInfo: [Function: getName] }
console.log(person);

console.log(p1); // empty object - {}

console.log(p2); // empty object - {}

// add properties to object 'p1'
// (properties with the same names like in object 'person')
p1.name = 'John';
p1.lastName = 'Doe';
p1.age = 25;

// add properties to object 'p2'
// (properties with the same names like in object 'person')
p2.name = 'Tom';
p2.lastName = 'Harrison';
p2.age = 38;

// { name: 'no name', lastName: 'no lastName', age: -1, getInfo: [Function: getName] }
console.log(person);

// { name: 'John', lastName: 'Doe', age: 25 }
console.log(p1);

// { name: 'Tom', lastName: 'Harrison', age: 38 }
console.log(p2);

// use by '__proto__'(link from 'p1' to 'person'),
// person's function 'getInfo'
console.log(p1.getInfo()); // John Doe, 25!

// use by '__proto__'(link from 'p2' to 'person'),
// person's function 'getInfo'
console.log(p2.getInfo()); // Tom Harrison, 38!

Variant 3.2 : 'Object.create(Object.prototype)'. Use Object.create with built-in object -> 'Object.prototype'. 'Object.create(Object.prototype)' will create(and return) new empty object and add property '__proto__' to the same new empty object. This property '__proto__' will point to the object 'Object.prototype'.

// 'Object.create(Object.prototype)' :
// 1. create and return empty object -> {}.
// 2. add to 'p1' property '__proto__', which is link to 'Object.prototype'
var p1 = Object.create(Object.prototype);

// 'Object.create(Object.prototype)' :
// 1. create and return empty object -> {}.
// 2. add to 'p2' property '__proto__', which is link to 'Object.prototype'
var p2 = Object.create(Object.prototype);

console.log(p1); // {}

console.log(p2); // {}

console.log(p1 === p2); // false

console.log(p1.prototype); // undefined

console.log(p2.prototype); // undefined

console.log(p1.__proto__ === Object.prototype); // true

console.log(p2.__proto__ === Object.prototype); // true

Variant 4 : 'new SomeFunction()'

// 'this' in constructor-function 'Person'
// represents a new instace,
// that will be created by 'new Person(...)'
// and returned implicitly
function Person(name, lastName, age) {

    this.name = name;
    this.lastName = lastName;
    this.age = age;

    //-----------------------------------------------------------------
    // !--- only for demonstration ---
    // if add function 'getInfo' into
    // constructor-function 'Person',
    // then all instances will have a copy of the function 'getInfo'!
    //
    // this.getInfo: function getInfo() {
    //  return this.name + " " + this.lastName + ", " + this.age + "!";
    // }
    //-----------------------------------------------------------------
}

// 'Person.prototype' is an empty object
// (before add function 'getInfo')
console.log(Person.prototype); // Person {}

// With 'getInfo' added to 'Person.prototype',
// instances by their properties '__proto__',
// will have access to the function 'getInfo'.
// With this approach, instances not need
// a copy of the function 'getInfo' for every instance.
Person.prototype.getInfo = function getInfo() {
    return this.name + " " + this.lastName + ", " + this.age + "!";
}

// after function 'getInfo' is added to 'Person.prototype'
console.log(Person.prototype); // Person { getInfo: [Function: getInfo] }

// create instance 'p1'
var p1 = new Person('John', 'Doe', 25);

// create instance 'p2'
var p2 = new Person('Tom', 'Harrison', 38);

// Person { name: 'John', lastName: 'Doe', age: 25 }
console.log(p1);

// Person { name: 'Tom', lastName: 'Harrison', age: 38 }
console.log(p2);

// 'p1.__proto__' points to 'Person.prototype'
console.log(p1.__proto__); // Person { getInfo: [Function: getInfo] }

// 'p2.__proto__' points to 'Person.prototype'
console.log(p2.__proto__); // Person { getInfo: [Function: getInfo] }

console.log(p1.__proto__ === p2.__proto__); // true

// 'p1' and 'p2' points to different objects(instaces of 'Person')
console.log(p1 === p2); // false

// 'p1' by its property '__proto__' reaches 'Person.prototype.getInfo' 
// and use 'getInfo' with 'p1'-instance's data
console.log(p1.getInfo()); // John Doe, 25!

// 'p2' by its property '__proto__' reaches 'Person.prototype.getInfo' 
// and use 'getInfo' with 'p2'-instance's data
console.log(p2.getInfo()); // Tom Harrison, 38!

I totally missed the export button at the bottom of each visualization. As for read only access...Shield from Elasticsearch might be worth exploring.

The general explanation is provided in the link from Dan.

For specific questions your ask :

They can reside on the same machine, even in the same process (JVM for Java). It is a logical distinction (what they do?), not a physical one (where they are?).

This is probably what you need:

$text = str_replace(' ', '_', substr($text, 0, 10));

Well, as others have stated, ambiguity in type is the issue. So the answer is no, C# doesn't let that happen because it's a strongly typed language, and it deals only with compile time known types. The compiler could have been designed to infer it as of type object, but the designers chose to avoid the extra complexity (in C# null has no type).

One alternative is

var foo = new { }; //anonymous type

Again note that you're initializing to a compile time known type, and at the end its not null, but anonymous object. It's only a few lines shorter than new object(). You can only reassign the anonymous type to foo in this one case, which may or may not be desirable.

Initializing to null with type not being known is out of question.

Unless you're using dynamic.

dynamic foo = null;
//or
var foo = (dynamic)null; //overkill

Of course it is pretty useless, unless you want to reassign values to foo variable. You lose intellisense support as well in Visual Studio.

Lastly, as others have answered, you can have a specific type declared by casting;

var foo = (T)null;

So your options are:

//initializes to non-null; I like it; cant be reassigned a value of any type
var foo = new { }; 

//initializes to non-null; can be reassigned a value of any type
var foo = new object();

//initializes to null; dangerous and finds least use; can be reassigned a value of any type
dynamic foo = null;
var foo = (dynamic)null;

//initializes to null; more conventional; can be reassigned a value of any type
object foo = null;

//initializes to null; cannot be reassigned a value of any type
var foo = (T)null;

This works in python 2 and 3 and is a bit cleaner than before, but requires SA>=1.0.

from sqlalchemy.engine.default import DefaultDialect
from sqlalchemy.sql.sqltypes import String, DateTime, NullType

# python2/3 compatible.
PY3 = str is not bytes
text = str if PY3 else unicode
int_type = int if PY3 else (int, long)
str_type = str if PY3 else (str, unicode)


class StringLiteral(String):
    """Teach SA how to literalize various things."""
    def literal_processor(self, dialect):
        super_processor = super(StringLiteral, self).literal_processor(dialect)

        def process(value):
            if isinstance(value, int_type):
                return text(value)
            if not isinstance(value, str_type):
                value = text(value)
            result = super_processor(value)
            if isinstance(result, bytes):
                result = result.decode(dialect.encoding)
            return result
        return process


class LiteralDialect(DefaultDialect):
    colspecs = {
        # prevent various encoding explosions
        String: StringLiteral,
        # teach SA about how to literalize a datetime
        DateTime: StringLiteral,
        # don't format py2 long integers to NULL
        NullType: StringLiteral,
    }


def literalquery(statement):
    """NOTE: This is entirely insecure. DO NOT execute the resulting strings."""
    import sqlalchemy.orm
    if isinstance(statement, sqlalchemy.orm.Query):
        statement = statement.statement
    return statement.compile(
        dialect=LiteralDialect(),
        compile_kwargs={'literal_binds': True},
    ).string

Demo:

# coding: UTF-8
from datetime import datetime
from decimal import Decimal

from literalquery import literalquery


def test():
    from sqlalchemy.sql import table, column, select

    mytable = table('mytable', column('mycol'))
    values = (
        5,
        u'snowman: ?',
        b'UTF-8 snowman: \xe2\x98\x83',
        datetime.now(),
        Decimal('3.14159'),
        10 ** 20,  # a long integer
    )

    statement = select([mytable]).where(mytable.c.mycol.in_(values)).limit(1)
    print(literalquery(statement))


if __name__ == '__main__':
    test()

Gives this output: (tested in python 2.7 and 3.4)

SELECT mytable.mycol
FROM mytable
WHERE mytable.mycol IN (5, 'snowman: ?', 'UTF-8 snowman: ?',
      '2015-06-24 18:09:29.042517', 3.14159, 100000000000000000000)
 LIMIT 1

I had this problem while trying to mix figures and text. What worked for me was the 'H' option without the '!' option. \begin{figure}[H]
'H' tries to forces the figure to be exactly where you put it in the code. This requires you include \usepackage{float}

The options are explained here

The best thing to do would be:

#vertalign{
  height: 300px;
  width: 300px;
  position: absolute;
  top: calc(50vh - 150px); 
}

150 pixels because that's half of the div's height in this case.

I had a really good experience with Avaje Ebean when I was writing a medium sized JavaSE application.

It uses standard JPA annotations to define entities, but exposes a much simpler API (No EntityManager or any of that attached/detached entities crap). It also lets you easily use SQL queries or event plain JDBC calls when necessary.

It also has a very nice fluid and type-safe API for queries. You can write things like:

List<Person> boys = Ebean.find(Person.class)
                                  .where()
                                       .eq("gender", "M")
                                       .le("age", 18)
                                  .orderBy("firstName")
                                  .findList();

// 2. Select a database to use 
$db_select = mysqli_select_db($connection, DB_NAME);
if (!$db_select) {
    die("Database selection failed: " . mysqli_error($connection));
}

You got the order of the arguments to mysqli_select_db() backwards. And mysqli_error() requires you to provide a connection argument. mysqli_XXX is not like mysql_XXX, these arguments are no longer optional.

Note also that with mysqli you can specify the DB in mysqli_connect():

$connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS, DB_NAME);
if (!$connection) {
  die("Database connection failed: " . mysqli_connect_error();
}

You must use mysqli_connect_error(), not mysqli_error(), to get the error from mysqli_connect(), since the latter requires you to supply a valid connection.

This is the best way to append the list and insert values to sorted list:

 a = [] num = int(input('How many numbers: ')) for n in range(num):
     numbers = int(input('Enter values:'))
     a.append(numbers)

 b = sorted(a) print(b) c = int(input("enter value:")) for i in
 range(len(b)):
     if b[i] > c:
         index = i
         break d = b[:i] + [c] + b[i:] print(d)`

You have to just add the index_col=False parameter

df1 = pd.read_csv('foo.csv',
     header=0,
     index_col=False,
     names=["dummy", "date", "loc", "x"], 
     usecols=["dummy", "date", "loc", "x"],
     parse_dates=["date"])
  print df1

This function handles edge cases and is fast:

function addMonthsUTC (date, count) {
  if (date && count) {
    var m, d = (date = new Date(+date)).getUTCDate()

    date.setUTCMonth(date.getUTCMonth() + count, 1)
    m = date.getUTCMonth()
    date.setUTCDate(d)
    if (date.getUTCMonth() !== m) date.setUTCDate(0)
  }
  return date
}

test:

> d = new Date('2016-01-31T00:00:00Z');
Sat Jan 30 2016 18:00:00 GMT-0600 (CST)
> d = addMonthsUTC(d, 1);
Sun Feb 28 2016 18:00:00 GMT-0600 (CST)
> d = addMonthsUTC(d, 1);
Mon Mar 28 2016 18:00:00 GMT-0600 (CST)
> d.toISOString()
"2016-03-29T00:00:00.000Z"

Update for non-UTC dates: (by A.Hatchkins)

function addMonths (date, count) {
  if (date && count) {
    var m, d = (date = new Date(+date)).getDate()

    date.setMonth(date.getMonth() + count, 1)
    m = date.getMonth()
    date.setDate(d)
    if (date.getMonth() !== m) date.setDate(0)
  }
  return date
}

test:

> d = new Date(2016,0,31);
Sun Jan 31 2016 00:00:00 GMT-0600 (CST)
> d = addMonths(d, 1);
Mon Feb 29 2016 00:00:00 GMT-0600 (CST)
> d = addMonths(d, 1);
Tue Mar 29 2016 00:00:00 GMT-0600 (CST)
> d.toISOString()
"2016-03-29T06:00:00.000Z"

I could't find a way to change the actual browser zoom level, but you can get pretty close with CSS transform: scale(). Here is my solution based on JavaScript and jQuery:

<!-- Trigger -->
<ul id="zoom_triggers">
    <li><a id="zoom_in">zoom in</a></li>
    <li><a id="zoom_out">zoom out</a></li>
    <li><a id="zoom_reset">reset zoom</a></li>
</ul>

<script>
    jQuery(document).ready(function($)
    {
        // Set initial zoom level
        var zoom_level=100;

        // Click events
        $('#zoom_in').click(function() { zoom_page(10, $(this)) });
        $('#zoom_out').click(function() { zoom_page(-10, $(this)) });
        $('#zoom_reset').click(function() { zoom_page(0, $(this)) });

        // Zoom function
        function zoom_page(step, trigger)
        {
            // Zoom just to steps in or out
            if(zoom_level>=120 && step>0 || zoom_level<=80 && step<0) return;

            // Set / reset zoom
            if(step==0) zoom_level=100;
            else zoom_level=zoom_level+step;

            // Set page zoom via CSS
            $('body').css({
                transform: 'scale('+(zoom_level/100)+')', // set zoom
                transformOrigin: '50% 0' // set transform scale base
            });

            // Adjust page to zoom width
            if(zoom_level>100) $('body').css({ width: (zoom_level*1.2)+'%' });
            else $('body').css({ width: '100%' });

            // Activate / deaktivate trigger (use CSS to make them look different)
            if(zoom_level>=120 || zoom_level<=80) trigger.addClass('disabled');
            else trigger.parents('ul').find('.disabled').removeClass('disabled');
            if(zoom_level!=100) $('#zoom_reset').removeClass('disabled');
            else $('#zoom_reset').addClass('disabled');
        }
    });
</script>

The clickAndWait command doesn't get converted when you choose the Webdriver format in the Selenium IDE. Here is the workaround. Add the wait line below. Realistically, the problem was the click or event that happened before this one--line 1 in my C# code. But really, just make sure you have a WaitForElement before any action where you're referencing a "By" object.

HTML code:

<a href="http://www.google.com">xxxxx</a>

C#/NUnit code:

driver.FindElement(By.LinkText("z")).Click;
driver.WaitForElement(By.LinkText("xxxxx"));
driver.FindElement(By.LinkText("xxxxx")).Click();

See http://angular-ui.github.io/bootstrap/#/collapse

function CollapseDemoCtrl($scope) {
  $scope.isCollapsed = false;
}



<div ng-controller="CollapseDemoCtrl">
    <button class="btn" ng-click="isCollapsed = !isCollapsed">Toggle collapse</button>
    <hr>
    <div collapse="isCollapsed">
        <div class="well well-large">Some content</div> 
    </div>
</div>

File fileToWrite = new File(filePath, "url");

BufferedImage bufferedImage = cropImage(fileToWrite, x, y, w, h);

private BufferedImage cropImage(File filePath, int x, int y, int w, int h){

    try {
        BufferedImage originalImgage = ImageIO.read(filePath);

        BufferedImage subImgage = originalImgage.getSubimage(x, y, w, h);



        return subImgage;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

Use the other encode method in URLEncoder:

URLEncoder.encode(String, String)

The first parameter is the text to encode; the second is the name of the character encoding to use (e.g., UTF-8). For example:

System.out.println(
  URLEncoder.encode(
    "urlParameterString",
    java.nio.charset.StandardCharsets.UTF_8.toString()
  )
);

If your coloumn is text and not varchar, then you can use this:

SELECT SUBSTRING(@String, 1, NULLIF(DATALENGTH(@String)-1,-1))

What about anonymous fields? I'm not sure if that will constitute a "nested struct" but it's cleaner than having a nested struct declaration. What if you want to reuse the nested element elsewhere?

type NestedElement struct{
    someNumber int `json:"number"`
    someString string `json:"string"`
}

type BaseElement struct {
    NestedElement `json:"bar"`
}

First, the enum methods shouldn't be in all caps. They are methods just like other methods, with the same naming convention.

Second, what you are doing is not the best possible way to set up your enum. Instead of using an array of values for the values, you should use separate variables for each value. You can then implement the constructor like you would any other class.

Here's how you should do it with all the suggestions above:

public enum States {
    ...
    MASSACHUSETTS("Massachusetts",  "MA",   true),
    MICHIGAN     ("Michigan",       "MI",   false),
    ...; // all 50 of those

    private final String full;
    private final String abbr;
    private final boolean originalColony;

    private States(String full, String abbr, boolean originalColony) {
        this.full = full;
        this.abbr = abbr;
        this.originalColony = originalColony;
    }

    public String getFullName() {
        return full;
    }

    public String getAbbreviatedName() {
        return abbr;
    }

    public boolean isOriginalColony(){
        return originalColony;
    }
}

before starting your actions, use

 sleep(5);

This command:

iconv -f utf-8 -t utf-8 -c file.txt

will clean up your UTF-8 file, skipping all the invalid characters.

-f is the source format
-t the target format
-c skips any invalid sequence

I just found a real-world application and will use it more often now, I think.

If you use jQuery events, sometimes you want to write a more generic function which may also be called directly (without event). You can use instanceof to check if the first parameter of your function is an instance of jQuery.Event and react appropriately.

var myFunction = function (el) {                
    if (el instanceof $.Event) 
        // event specific code
    else
        // generic code
};

$('button').click(recalc);    // Will execute event specific code
recalc('myParameter');  // Will execute generic code

In my case, the function needed to calculate something either for all (via click event on a button) or only one specific element. The code I used:

var recalc = function (el) { 
    el = (el == undefined || el instanceof $.Event) ? $('span.allItems') : $(el);
    // calculate...
};

This also works in Silverlight 5 (perhaps earlier as well but i haven't tested it). I used the relative source like this and it worked fine.

RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType=telerik:RadGridView}"

You can use Java jar tool. List the content of jar file in a txt file and you can see all the classes in the jar.

jar tvf jarfile.jar

-t list table of contents for archive

-v generate verbose output on standard output

-f specify archive file name

@IanDevlin is correct. MDN's rules say the following:

"The HTML Header Element "" defines a page header — typically containing the logo and name of the site and possibly a horizontal menu..."

The word "possibly" there is key. It goes on to say that the header doesn't necessarily need to be a site header. For instance you could include a "header" on a pop-up modal or on other modular parts of the document where there is a header and it would be helpful for a user on a screen reader to know about it.

It terms of the implicit use of NAV you can use it anywhere there is grouped site navigation, although it's usually omitted from the "footer" section for mini-navs / important site links.

Really it comes down to personal / team choice. Decide what you and your team feel is more semantic and more important and the try to be consistent. For me, if the nav is inline with the logo and the main site's "h1" then it makes sense to put it in the "header" but if you have a different design choice then decide on a case by case basis.

Most importantly check out the docs and be sure if you choose to omit or include you understand why you are making that particular decision.

To answer to your question that is WHY default date don't display TIME part, the only answer I find is

Oracle teams are composed of LAZY developpers or responsibles :-)

Why ?

Because DATE, TIME and DATETIME datatypes exist in SQL and Oracle has not yet implemented it !!!

It is a shame for Oracle.

But the correct answer to your problem is not to define a FIX default format but a SIGNIFICANT default format that display only significant digits so that DATE, TIME or DATETIME values displayed (by default) contains always all important digits.

Example:

2015-10-14          will be displayed as 2015-10-14 (or default DATE format)
2018-10-25 12:20:00 will be displayed as 2018-10-25 12:20
1994-04-16 16       will be displayed as 1994-04-16 16

The principle is simple.

All digits being part of DATE will always be displayed as INTEGER part of float number. For TIME part, only significant part will be displayed as for DECIMAL part in float number. Naturally, for TIME type (only HH:MM:SS), the DATE part is never displayed.

There are two ways to group multiple SVG shapes and position the group:

The first to use <g> with transform attribute as Aaron wrote. But you can't just use a x attribute on the <g> element.

The other way is to use nested <svg> element.

<svg id="parent">
   <svg id="group1" x="10">
      <!-- some shapes -->
   </svg>
</svg>

In this way, the #group1 svg is nested in #parent, and the x=10 is relative to the parent svg. However, you can't use transform attribute on <svg> element, which is quite the contrary of <g> element.

Unless I misses something, the following simple solution with generator expressions has not been mentioned. It assumes that both the size and the number of chunks are known (which is often the case), and that no padding is required:

def chunks(it, n, m):
    """Make an iterator over m first chunks of size n.
    """
    it = iter(it)
    # Chunks are presented as tuples.
    return (tuple(next(it) for _ in range(n)) for _ in range(m))

This is an old question, but, as a newbie I figured I'd add that (using Webstorm) you need to click on Mongo Explorer (tab on far right hand side of your window). From there:

-Click settings. -Click browse button (looks like a button with "..." on it). -Go to Program Files > MongoDB > Server > 3.4 > bin > mongo.exe (your version maybe different than 3.4) -After that, click the green plus sign on the right. A window will open -Enter a name in "Label" slot. -Click apply.

You should now be connected. Entering "mongod" in the terminal isn't enough. You have to do the above steps also.

My apologies in advance to those of you who aren't using Webstorm! Not sure about the steps using other IDE's.

Try to replace your initialization code with:

ProcessStartInfo info 
    = new ProcessStartInfo(@"C:\Program Files\Internet Explorer\iexplore.exe");

Using non full filepath on Process.Start only works if the file is found in System32 folder.

If you would like to indent text within a div without changing the size of the div use the CSS text-indent instead of padding-left.

.indent {_x000D_
  text-indent: 1em;_x000D_
}_x000D_
.border {_x000D_
  border-style: solid;_x000D_
}

<div class="border">_x000D_
  Non indented_x000D_
</div>_x000D_
_x000D_
<br>_x000D_
_x000D_
<div class="border indent">_x000D_
  Indented_x000D_
</div>

In Windows it is dependent on the "Regional and Language Options" customize screen where you find a List separator. This is the char Windows applications expect to be the CSV separator.

Of course this only has effect in Windows applications, for example Excel will not automatically split data into columns if the file is not using the above mentioned separator. All applications that use Windows regional settings will have this behavior.

If you are writing a program for Windows that will require importing the CSV in other applications and you know that the list separator set for your target machines is ,, then go for it, otherwise I prefer ; since it causes less problems with decimal points, digit grouping and does not appear in much text.

Sometimes it's more simple to implement a copy constructor:

public MyObject (MyObject toClone) {
}

It saves you the trouble of handling CloneNotSupportedException, works with final fields and you don't have to worry about the type to return.

Directly install one of the fink packages (Django 1.6 as of 2013-Nov)

fink install django-py27
fink install django-py33

Or create yourself a virtualenv:

fink install virtualenv-py27
virtualenv django-env
source django-env/bin/activate
pip install django
deactivate # when you are done

Or use fink django plus any other pip installed packages in a virtualenv

fink install django-py27
fink install virtualenv-py27
virtualenv django-env --system-site-packages
source django-env/bin/activate
# django already installed
pip install django-analytical # or anything else you might want
deactivate # back to your normally scheduled programming

Dim dr As DataRow()


dr = dt.Select("A="& a & "and B="& b & "and C=" & c,"A",DataViewRowState.CurrentRows)

Where A,B,C are the column names where second parameter is for sort expression

You better use varchar(max) which (in terms of size) means varchar (65535). This will even store your bigger web addresses and will save your space as well.

The max specifier expands the storage capabilities of the varchar, nvarchar, and varbinary data types. varchar(max), nvarchar(max), and varbinary(max) are collectively called large-value data types. You can use the large-value data types to store up to 2^31-1 bytes of data.

See this article on TechNet about using Using Large-Value Data Types

Use the extern keyword to declare the variable in the other .c file. E.g.:

extern int counter;

means that the actual storage is located in another file. It can be used for both variables and function prototypes.

puts adds a new line to the end of each argument if there is not one already.

print does not add a new line.

For example:

puts [[1,2,3], [4,5,nil]] Would return:

1
2
3
4
5

Whereas print [[1,2,3], [4,5,nil]] would return:

[[1,2,3], [4,5,nil]]

Notice how puts does not output the nil value whereas print does.

From @NHG comment — works perfectly

{% for post in posts|slice(0,10) %}

<form id="uploadbanner" enctype="multipart/form-data" method="post" action="#">
   <input id="fileupload" name="myfile" type="file" />
   <input type="submit" value="submit" id="submit" />
</form>

To upload a file, it is essential to set enctype="multipart/form-data" on your form

You need that form type and then some php to process the file :)

You should probably check out Uploadify if you want something very customisable out of the box.

Rolling back last migration:

# rails < 5.0
rake db:rollback

# rails >= 5.0
rake db:rollback
# or
rails db:rollback

Rolling back last n number of migrations

# rails < 5.0
rake db:rollback STEP=2

# rails >= 5.0
rake db:rollback STEP=2
# or
rails db:rollback STEP=2

Rolling back a specific migration

# rails < 5.0
rake db:migrate:down VERSION=20100905201547

# rails >= 5.0
rake db:migrate:down VERSION=20100905201547
# or
rails db:migrate:down VERSION=20100905201547

The following code works for me:

.half {
    -moz-transform:scale(0.5);
    -webkit-transform:scale(0.5);
    transform:scale(0.5);
}

<img class="half" src="images/myimage.png">

Make sure to watch your selectors. You appear to have forgotten the # for div2. Additionally, you can toggle the visibility of many elements at once with .toggle():

// Short-form of `document.ready`
$(function(){
    $("#div2").hide();
    $("#preview").on("click", function(){
        $("#div1, #div2").toggle();
    });
});

Demo: http://jsfiddle.net/dJg8N/

You can define the section by RenderSection method in layout.

Layout

<head>
  <link href="@Url.Content("~/Content/themes/base/Site.css")"
    rel="stylesheet" type="text/css" />
  @RenderSection("heads", required: false)
</head>

Then you can include your css files in section area in your view except partial view.

The section work in view, but not work in partial view by design.

<!--your code -->
@section heads
{
  <link href="@Url.Content("~/Content/themes/base/AnotherPage.css")"
  rel="stylesheet" type="text/css" />
}

If you really want to using section area in partial view, you can follow the article to redefine RenderSection method.

Razor, Nested Layouts and Redefined Sections – Marcin On ASP.NET

Answer (Individual Files)

1. Showcase keys to use in selection.

xattr ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png
    # com.apple.FinderInfo
    # com.apple.lastuseddate#PS
    # com.apple.metadata:kMDItemIsScreenCapture
    # com.apple.metadata:kMDItemScreenCaptureGlobalRect
    # com.apple.metadata:kMDItemScreenCaptureType

2. Pick a Key to delete.

xattr -d com.apple.lastuseddate#PS ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png
xattr -d kMDItemIsScreenCapture ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png

3. Showcase keys again to see they have been removed.

xattr -l ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png
    # com.apple.FinderInfo
    # com.apple.metadata:kMDItemScreenCaptureGlobalRect
    # com.apple.metadata:kMDItemScreenCaptureType

4. Lastly, REMOVE ALL keys for a particular file

xattr -c ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png

Answer (All Files In A Directory)

1. Showcase keys to use in selection.

xattr -r ~/Desktop

2. Remove a Specific Key for EVERY FILE in a directory

xattr -rd com.apple.FinderInfo ~/Desktop

3. Remove ALL keys on EVERY FILE in a directory

xattr -rc ~/Desktop

WARN: Once you delete these you DON'T get them back!
FAULT ERROR: There is NO UNDO.

Errors

I wanted to address the error's people are getting. Because the errors drove me nuts too... On a mac if you install xattr in python, then your environment may have an issue.

There are two different paths on my mac for xattr

type -a xattr

    # xattr is /usr/local/bin/xattr    # PYTHON Installed Version
    # xattr is /usr/bin/xattr          # Mac OSX Installed Version

So in one of the example's where -c will not work in xargs is because in bash you default to the non-python version.

Works with -c

/usr/bin/xattr -c

Does NOT Work with -c

/usr/local/bin/xattr -c
    # option -c not recognized

My Shell/Terminal defaults to /usr/local/bin/xattr because my $PATH /usr/local/bin: is before /usr/bin: which I believe is the default.

I can prove this because, if you try to uninstall the python xattr you will see:

pip3 uninstall xattr
Uninstalling xattr-0.9.6:
  Would remove:
    /usr/local/bin/xattr
    /usr/local/lib/python3.7/site-packages/xattr-0.9.6.dist-info/*
    /usr/local/lib/python3.7/site-packages/xattr/*
Proceed (y/n)?

Workarounds

To Fix option -c not recognized Errors.

1. Uninstall any Python xattr you may have: pip3 uninstall xattr
2. Close all Terminal windows & quit Terminal
3. Reopen a new Terminal window.
4. ReRun xattr command and it should now work.

OR

If you want to keep the Python xattr then use

/usr/bin/xattr

for any Shell commands in Terminal

Example:

Python's version of xattr doesn't handle images at all:

Good-Mac:~ JayRizzo$ xattr ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png
    # com.apple.FinderInfo
    # Traceback (most recent call last):
    #   File "/usr/local/bin/xattr", line 8, in <module>
    #     sys.exit(main())
    #   File "/usr/local/lib/python3.7/site-packages/xattr/tool.py", line 196, in main
    #     attr_value = attr_value.decode('utf-8')
    # UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb0 in position 2: invalid start byte

Good-Mac:~ JayRizzo$ /usr/bin/xattr ~/Desktop/screenshot\ 2019-10-23\ at\ 010212.png
    # com.apple.FinderInfo
    # com.apple.lastuseddate#PS
    # com.apple.metadata:kMDItemIsScreenCapture
    # com.apple.metadata:kMDItemScreenCaptureGlobalRect
    # com.apple.metadata:kMDItemScreenCaptureType

Man Pages

MAN PAGE for OSX xattr

MAN PAGE for Python xattr VERSION 0.6.4

NOTE: I could not find the python help page for current VERSION 0.9.6

Thanks for Reading!

2 way conversion in c# from boolean to visibility

using System;
using System.Windows;
using System.Windows.Data;

namespace FaceTheWall.converters
{
    class BooleanToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value is Boolean && (bool)value)
            {
                return Visibility.Visible;
            }
            return Visibility.Collapsed;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value is Visibility && (Visibility)value == Visibility.Visible)
            {
                return true;
            }
            return false;
        }
    }
}

Note that the % syntax is obsolete. Use str.format, which is simpler and more readable:

t = 1,2,3
print 'This is a tuple {0}'.format(t)

Here are some more tests

True if string is not empty:

[ -n "$var" ]
[[ -n $var ]]
test -n "$var"
[ "$var" ]
[[ $var ]]
(( ${#var} ))
let ${#var}
test "$var"

True if string is empty:

[ -z "$var" ]
[[ -z $var ]]
test -z "$var"
! [ "$var" ]
! [[ $var ]]
! (( ${#var} ))
! let ${#var}
! test "$var"

In my case the error appeared when I added the com.nimbusds library in my application deployed on Websphere 8.5.
The below exception occurred:

Caused by: java.lang.IncompatibleClassChangeError: org.objectweb.asm.AnnotationVisitor

The solution was to exclude the asm jar from the library:

<dependency>
    <groupId>com.nimbusds</groupId>
    <artifactId>nimbus-jose-jwt</artifactId>
    <version>5.1</version>
    <exclusions>
        <exclusion>
            <artifactId>asm</artifactId>
            <groupId>org.ow2.asm</groupId>
        </exclusion>
    </exclusions>
</dependency>

You can use PhoneNumberUtils if your phone format is one of the described formats. If none of the utility function match your needs, use regular experssions.

In this case, you can add the query page and/ or limit to your URL as a query string.

For example:
?page=0&limit=25 // this would be added onto your URL: http:localhost:5000?page=0&limit=25

Since it would be a String we need to convert it to a Number for our calculations. Let's do it using the parseInt method and let's also provide some default values.

const pageOptions = {
    page: parseInt(req.query.page, 10) || 0,
    limit: parseInt(req.query.limit, 10) || 10
}

sexyModel.find()
    .skip(pageOptions.page * pageOptions.limit)
    .limit(pageOptions.limit)
    .exec(function (err, doc) {
        if(err) { res.status(500).json(err); return; };
        res.status(200).json(doc);
    });

BTW Pagination starts with 0

You will need to do a couple of things to get this going, since your parameter is getting multiple values you need to create a Table Type and make your store procedure accept a parameter of that type.

Split Function Works Great when you are getting One String containing multiple values but when you are passing Multiple values you need to do something like this....

TABLE TYPE

CREATE TYPE dbo.TYPENAME AS TABLE   (     arg int    )  GO 

Stored Procedure to Accept That Type Param

 CREATE PROCEDURE mainValues   @TableParam TYPENAME READONLY  AS     BEGIN     SET NOCOUNT ON;   --Temp table to store split values   declare @tmp_values table (   value nvarchar(255) not null);        --function splitting values     INSERT INTO @tmp_values (value)    SELECT arg FROM @TableParam      SELECT * FROM @tmp_values  --<-- For testing purpose END 

EXECUTE PROC

Declare a variable of that type and populate it with your values.

 DECLARE @Table TYPENAME     --<-- Variable of this TYPE   INSERT INTO @Table                --<-- Populating the variable   VALUES (331),(222),(876),(932)  EXECUTE mainValues @Table   --<-- Stored Procedure Executed  

Result

╔═══════╗ ║ value ║ ╠═══════╣ ║   331 ║ ║   222 ║ ║   876 ║ ║   932 ║ ╚═══════╝ 

This query should work for you:

SELECT *
FROM table
WHERE MONTH(columnName) = MONTH(CURRENT_DATE())
AND YEAR(columnName) = YEAR(CURRENT_DATE())

This article on MSDN references a number of type aliases (available on Windows) that are a bit more explicit with respect to their width:

http://msdn.microsoft.com/en-us/library/aa505945.aspx

For instance, although you can use ULONGLONG to reference a 64-bit unsigned integral value, you can also use UINT64. (The same goes for ULONG and UINT32.) Perhaps these will be a bit clearer?

IE can set username and password proxies, so maybe setting it there and import does work

reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable /t REG_DWORD /d 1
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyServer /t REG_SZ /d name:port
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyUser /t REG_SZ /d username
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyPass /t REG_SZ /d password
netsh winhttp import proxy source=ie

I think in this case they are the same, but here is an example where order matters:

const int* cantChangeTheData;
int* const cantChangeTheAddress;

That is interesting subject. You can play around with two lifecycle hooks to figure out how it works: ngOnChanges and ngOnInit.

Basically when you set default value to Input that's mean it will be used only in case there will be no value coming on that component. And the interesting part it will be changed before component will be initialized.

Let's say we have such components with two lifecycle hooks and one property coming from input.

@Component({
  selector: 'cmp',
})
export class Login implements OnChanges, OnInit {
  @Input() property: string = 'default';

  ngOnChanges(changes) {
    console.log('Changed', changes.property.currentValue, changes.property.previousValue);
  }

  ngOnInit() {
    console.log('Init', this.property);
  }

}

Situation 1

Component included in html without defined property value

As result we will see in console: Init default

That's mean onChange was not triggered. Init was triggered and property value is default as expected.

Situation 2

Component included in html with setted property <cmp [property]="'new value'"></cmp>

As result we will see in console:

Changed new value Object {}

Init new value

And this one is interesting. Firstly was triggered onChange hook, which setted property to new value, and previous value was empty object! And only after that onInit hook was triggered with new value of property.

this is what worked for me,

sudo -H pip install flask

Or for pip3(python3) use :

sudo -H pip3 install flask

Sidenote

If you're using virtualenv it's a good idea to pip freeze >> requirements.txt to allow for the installed packages to be listed in one place. The sudo command and -H flag. For more on sudo's -H flag, look at Paul's answer. Hope this helps you.

I am in the same boot like you. In the case you mention, I would implement the input validation UI component as a React component.

I agree the implementation of the validation logic itself should (must) not be coupled. Therefore I would put it into a separate JS module.

That is, for logic that should not be coupled use a JS module/class in separate file, and use require/import to de-couple the component from the "service".

This allows for dependency injection and unit testing of the two independently.

Give width of image as match_parent and height as required, say 300 dp.

<ImageView
    android:id = "@+id/imgXYZ"
    android:layout_width = "match_parent"
    android:layout_height = "300dp"
    android:src="@drawable/imageXYZ"
    />

And this is the answer of Frederik on Swift 3.0

/*
 Usage:
 - make your CustomeView class and inherit from this one
 - in your Xib file make the file owner is your CustomeView class
 - *Important* the root view in your Xib file must be of type UIView
 - link all outlets to the file owner
 */
@IBDesignable
class NibLoadingView: UIView {

    @IBOutlet weak var view: UIView!

    override init(frame: CGRect) {
        super.init(frame: frame)
        nibSetup()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        nibSetup()
    }

    private func nibSetup() {
        backgroundColor = .clear

        view = loadViewFromNib()
        view.frame = bounds
        view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        view.translatesAutoresizingMaskIntoConstraints = true

        addSubview(view)
    }

    private func loadViewFromNib() -> UIView {
        let bundle = Bundle(for: type(of: self))
        let nib = UINib(nibName: String(describing: type(of: self)), bundle: bundle)
        let nibView = nib.instantiate(withOwner: self, options: nil).first as! UIView

        return nibView
    }
}

I think it's all personal preference. My preferences come from using NHibernate, in .NET, with SQL Server, so they probably differ from what others use.

• Databases: The application that's being used.. ex: Stackoverflow
• Collections: Singular in name, what it's going to be a collection of, ex: Question
• Document fields, ex: MemberFirstName

Honestly, it doesn't matter too much, as long as it's consistent for the project. Just get to work and don't sweat the details :P

If you are using rails 3 or greater version

rails new your_project_name -d mysql

if you have earlier version

rails new -d mysql your_project_name

So before you create your project you need to find the rails version. that you can find by

rails -v

Use the built-in function round():

In [23]: round(66.66666666666,4)
Out[23]: 66.6667

In [24]: round(1.29578293,6)
Out[24]: 1.295783

help on round():

round(number[, ndigits]) -> floating point number

Round a number to a given precision in decimal digits (default 0 digits). This always returns a floating point number. Precision may be negative.

I got this when I forgot the -m in my git commit when resolving a git merge conflict.

git commit "commit message"

should be

git commit -m "commit message"

only variable/object declaration statement are written outside of method

public class details{
    public static void main(String arg[]){
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("What is your name?");
        String name = in.readLine(); ;
        System.out.println("Hello " + name);
    }
}

here is example try to learn java book and see the syntax then try to develop the program

Swift 5

I call present in viewDidLayoutSubviews as presenting in viewDidAppear causes a split second showing of the view controller before the modal is loaded which looks like an ugly glitch

make sure to check for the window existence and execute code just once

var alreadyPresentedVCOnDisplay = false

override func viewDidLayoutSubviews() {
        
    super.viewDidLayoutSubviews()
    
    // we call present in viewDidLayoutSubviews as
    // presenting in viewDidAppear causes a split second showing 
    // of the view controller before the modal is loaded
    
    guard let _ = view?.window else {
        // window must be assigned
        return
    }
    
    if !alreadyPresentedVCOnDisplay {
        alreadyPresentedVCOnDisplay = true
        present(...)
    }
    
}

What's the difference between Perl's backticks (`), system, and exec?

exec -> exec "command"; ,
system -> system("command"); and 
backticks -> print `command`;

exec

exec executes a command and never resumes the Perl script. It's to a script like a return statement is to a function.

If the command is not found, exec returns false. It never returns true, because if the command is found, it never returns at all. There is also no point in returning STDOUT, STDERR or exit status of the command. You can find documentation about it in perlfunc, because it is a function.

E.g.:

#!/usr/bin/perl
print "Need to start exec command";
my $data2 = exec('ls');
print "Now END exec command";
print "Hello $data2\n\n";

In above code, there are three print statements, but due to exec leaving the script, only the first print statement is executed. Also, the exec command output is not being assigned to any variable.

Here, only you're only getting the output of the first print statement and of executing the ls command on standard out.

system

system executes a command and your Perl script is resumed after the command has finished. The return value is the exit status of the command. You can find documentation about it in perlfunc.

E.g.:

#!/usr/bin/perl
print "Need to start system command";
my $data2 = system('ls');
print "Now END system command";
print "Hello $data2\n\n";

In above code, there are three print statements. As the script is resumed after the system command, all three print statements are executed.

Also, the result of running system is assigned to data2, but the assigned value is 0 (the exit code from ls).

Here, you're getting the output of the first print statement, then that of the ls command, followed by the outputs of the final two print statements on standard out.

backticks (`)

Like system, enclosing a command in backticks executes that command and your Perl script is resumed after the command has finished. In contrast to system, the return value is STDOUT of the command. qx// is equivalent to backticks. You can find documentation about it in perlop, because unlike system and exec, it is an operator.

E.g.:

#!/usr/bin/perl
print "Need to start backticks command";
my $data2 = `ls`;
print "Now END system command";
print "Hello $data2\n\n";

In above code, there are three print statements and all three are being executed. The output of ls is not going to standard out directly, but assigned to the variable data2 and then printed by the final print statement.

Why is Ruby considered slow?

Because if you run typical benchmarks between Ruby and other languages, Ruby loses.

I do not find Ruby to be slow but then again, I'm just using it to make simple CRUD apps and company blogs. What sort of projects would I need to be doing before I find Ruby becoming slow? Or is this slowness just something that affects all programming languages?

Ruby probably wouldn't serve you well in writing a real-time digital signal processing application, or any kind of real-time control system. Ruby (with today's VMs) would probably choke on a resource-constrained computer such as smartphones.

Remember that a lot of the processing on your web applications is actually done by software developed in C. e.g. Apache, Thin, Nginx, SQLite, MySQL, PostgreSQL, many parsing libraries, RMagick, TCP/IP, etc are C programs used by Ruby. Ruby provides the glue and the business logic.

What are your options as a Ruby programmer if you want to deal with this "slowness"?

Switch to a faster language. But that carries a cost. It is a cost that may be worth it. But for most web applications, language choice is not a relevant factor because there is just not enough traffic justify using a faster language that costs much more to develop for.

Which version of Ruby would best suit an application like Stack Overflow where speed is critical and traffic is intense?

Other folks have answered this - JRuby, IronRuby, REE will make the Ruby part of your application run faster on platforms that can afford the VMs. And since it is often not Ruby that causes slowness, but your computer system architecture and application architecture, you can do stuff like database replication, multiple application servers, loadbalancing with reverse proxies, HTTP caching, memcache, Ajax, client-side caching, etc. None of this stuff is Ruby.

Finally, I can't find much news on Ruby 2.0 - I take it we're a good few years away from that then?

Most folks are waiting for Ruby 1.9.1. I myself am waiting for Rails 3.1 on Ruby 1.9.1 on JRuby.

Finally, please remember that a lot of developers choose Ruby because it makes programming a more joyful experience compared to other languages, and because Ruby with Rails enables skilled web developers to develop applications very quickly.

What do you mean by an "anonymous object?" myObj is not anonymous since you've assigned an object literal to a variable. You can just test this:

if (typeof myObj.prop2 === 'function')
{
    // do whatever
}

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

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

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

You may use the different accessors to communicate your intent to someone reading your code, and make it easier to write classes which will work correctly no matter how their public API is called.

class Person
  attr_accessor :age
  ...
end

Here, I can see that I may both read and write the age.

class Person
  attr_reader :age
  ...
end

Here, I can see that I may only read the age. Imagine that it is set by the constructor of this class and after that remains constant. If there were a mutator (writer) for age and the class were written assuming that age, once set, does not change, then a bug could result from code calling that mutator.

But what is happening behind the scenes?

If you write:

attr_writer :age

That gets translated into:

def age=(value)
  @age = value
end

If you write:

attr_reader :age

That gets translated into:

def age
  @age
end

If you write:

attr_accessor :age

That gets translated into:

def age=(value)
  @age = value
end

def age
  @age
end

Knowing that, here's another way to think about it: If you did not have the attr_... helpers, and had to write the accessors yourself, would you write any more accessors than your class needed? For example, if age only needed to be read, would you also write a method allowing it to be written?

If you are using Android Studio 3.0 or above make sure your project build.gradle should have content similar to-

buildscript {                 
    repositories {
        google()
        jcenter()
    }
    dependencies {            
        classpath 'com.android.tools.build:gradle:3.0.1'

    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

Note- position really matters add google() before jcenter()

And for below Android Studio 3.0 and starting from support libraries 26.+ your project build.gradle must look like this-

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

check these links below for more details-

1- Building Android Apps

2- Add Build Dependencies

3- Configure Your Build

You may also write it in two statements if it mostly is true use:

a = 5
a = 10 if false

Or use a switch statement if you need more possibilities:

a = switch x
  when true then 5
  when false then 10

With a boolean it may be oversized but i find it very readable.

Another possibility is

var res = /!id-[^!]*/.exec("!"+windowArray.join("!"));
return res && res[0].substr(1);

that IMO may make sense if you can have a special char delimiter (here i used "!"), the array is constant or mostly constant (so the join can be computed once or rarely) and the full string isn't much longer than the prefix searched for.

You can't, but you can use BETWEEN

SELECT job FROM mytable WHERE id BETWEEN 10 AND 15

Note that BETWEEN is inclusive, and will include items with both id 10 and 15.

If you do not want inclusion, you'll have to fall back to using the > and < operators.

SELECT job FROM mytable WHERE id > 10 AND id < 15

Use this to get the page scroll position.

var screenTop = $(document).scrollTop();

$('#content').css('top', screenTop);

The answer has been covered, but for simplicity...

# To filter out finished threads
threads = [t for t in threads if t.is_alive()]

# Same thing but for QThreads (if you are using PyQt)
threads = [t for t in threads if t.isRunning()]

You have an extra '{' before return type. You may also want to put '==' instead of '=' in if and else condition.

Gson 1.6 now includes a low-level streaming API and a new parser which is actually faster than Jackson.

If your building that SQL in a tool like TOAD or other SQL oriented IDE they often have copy markup to the clipboard. For example, TOAD has a CTRL+M which takes the SQL in your editor and does exactly what you have in your code above. It also covers the reverse... when your grabbing a formatted string out of your Java and want to execute it in TOAD. Pasting the SQL back into TOAD and perform a CTRL+P to remove the multi-line quotes.

I am working on DOM Keyboard Event Level 3 polyfill . In latest browsers or with this polyfill you can do something like this:

element.addEventListener("keydown", function(e){ console.log(e.key, e.char, e.keyCode) })

var e = new KeyboardEvent("keydown", {bubbles : true, cancelable : true, key : "Q", char : "Q", shiftKey : true});
element.dispatchEvent(e);

//If you need legacy property "keyCode"
// Note: In some browsers you can't overwrite "keyCode" property. (At least in Safari)
delete e.keyCode;
Object.defineProperty(e, "keyCode", {"value" : 666})

UPDATE:

Now my polyfill supports legacy properties "keyCode", "charCode" and "which"

var e = new KeyboardEvent("keydown", {
    bubbles : true,
    cancelable : true,
    char : "Q",
    key : "q",
    shiftKey : true,
    keyCode : 81
});

Examples here

Additionally here is cross-browser initKeyboardEvent separately from my polyfill: (gist)

Polyfill demo

Mobile number Validation using Java Script, This link will provide demo and more information.

function isNumber(evt) {_x000D_
  evt = (evt) ? evt : window.event;_x000D_
  var charCode = (evt.which) ? evt.which : evt.keyCode;_x000D_
  if (charCode > 31 && (charCode < 48 || charCode > 57)) {_x000D_
    alert("Please enter only Numbers.");_x000D_
    return false;_x000D_
  }_x000D_
_x000D_
  return true;_x000D_
}_x000D_
_x000D_
function ValidateNo() {_x000D_
  var phoneNo = document.getElementById('txtPhoneNo');_x000D_
_x000D_
  if (phoneNo.value == "" || phoneNo.value == null) {_x000D_
    alert("Please enter your Mobile No.");_x000D_
    return false;_x000D_
  }_x000D_
  if (phoneNo.value.length < 10 || phoneNo.value.length > 10) {_x000D_
    alert("Mobile No. is not valid, Please Enter 10 Digit Mobile No.");_x000D_
    return false;_x000D_
  }_x000D_
_x000D_
  alert("Success ");_x000D_
  return true;_x000D_
}

<input id="txtPhoneNo" type="text" onkeypress="return isNumber(event)" />_x000D_
<input type="button" value="Submit" onclick="ValidateNo();">

The Car Analogy

IDE: The MS Office of Programming. It's where you type your code, plus some added features to make you a happier programmer. (e.g. Eclipse, Netbeans). Car body: It's what you really touch, see and work on.

Library: A library is a collection of functions, often grouped into multiple program files, but packaged into a single archive file. This contains programs created by other folks, so that you don't have to reinvent the wheel. (e.g. junit.jar, log4j.jar). A library generally has a key role, but does all of its work behind the scenes, it doesn't have a GUI. Car's engine.

API: The library publisher's documentation. This is how you should use my library. (e.g. log4j API, junit API). Car's user manual - yes, cars do come with one too!

Kits

What is a kit? It's a collection of many related items that work together to provide a specific service. When someone says medicine kit, you get everything you need for an emergency: plasters, aspirin, gauze and antiseptic, etc.

SDK: McDonald's Happy Meal. You have everything you need (and don't need) boxed neatly: main course, drink, dessert and a bonus toy. An SDK is a bunch of different software components assembled into a package, such that they're "ready-for-action" right out of the box. It often includes multiple libraries and can, but may not necessarily include plugins, API documentation, even an IDE itself. (e.g. iOS Development Kit).

Toolkit: GUI. GUI. GUI. When you hear 'toolkit' in a programming context, it will often refer to a set of libraries intended for GUI development. Since toolkits are UI-centric, they often come with plugins (or standalone IDE's) that provide screen-painting utilities. (e.g. GWT)

Framework: While not the prevalent notion, a framework can be viewed as a kit. It also has a library (or a collection of libraries that work together) that provides a specific coding structure & pattern (thus the word, framework). (e.g. Spring Framework)

if a device has an SD card, you use:

Environment.getExternalStorageState() 

if you don't have an SD card, you use:

Environment.getDataDirectory()

if there is no SD card, you can create your own directory on the device locally.

    //if there is no SD card, create new directory objects to make directory on device
        if (Environment.getExternalStorageState() == null) {
                        //create new file directory object
            directory = new File(Environment.getDataDirectory()
                    + "/RobotiumTestLog/");
            photoDirectory = new File(Environment.getDataDirectory()
                    + "/Robotium-Screenshots/");
            /*
             * this checks to see if there are any previous test photo files
             * if there are any photos, they are deleted for the sake of
             * memory
             */
            if (photoDirectory.exists()) {
                File[] dirFiles = photoDirectory.listFiles();
                if (dirFiles.length != 0) {
                    for (int ii = 0; ii <= dirFiles.length; ii++) {
                        dirFiles[ii].delete();
                    }
                }
            }
            // if no directory exists, create new directory
            if (!directory.exists()) {
                directory.mkdir();
            }

            // if phone DOES have sd card
        } else if (Environment.getExternalStorageState() != null) {
            // search for directory on SD card
            directory = new File(Environment.getExternalStorageDirectory()
                    + "/RobotiumTestLog/");
            photoDirectory = new File(
                    Environment.getExternalStorageDirectory()
                            + "/Robotium-Screenshots/");
            if (photoDirectory.exists()) {
                File[] dirFiles = photoDirectory.listFiles();
                if (dirFiles.length > 0) {
                    for (int ii = 0; ii < dirFiles.length; ii++) {
                        dirFiles[ii].delete();
                    }
                    dirFiles = null;
                }
            }
            // if no directory exists, create new directory to store test
            // results
            if (!directory.exists()) {
                directory.mkdir();
            }
        }// end of SD card checking

add permissions on your manifest.xml

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

Happy coding..

This will work for most of the website names :

SELECT ID, REVERSE(PARSENAME(REVERSE(WebsiteName), 2)) FROM dbo.YourTable .....

Flow the flowing steps :

1. Edit your listener.ora and tnsnames.ora file in $Oracle_home\product\11.2.0\client_1\NETWORK\ADMIN location

   a. add listener.ora file

   LISTENER =
     (DESCRIPTION_LIST =
       (DESCRIPTION =
         (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
         (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
   )
   

   )

ADR_BASE_LISTENER = C: [here c is oralce home directory]

b. add in tnsnames.ora file

    SCHEMADEV =
            (DESCRIPTION =
                     (ADDRESS_LIST =
                     (ADDRESS = (PROTOCOL = TCP)(HOST = dabase_ip)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = SCHEMADEV)
    )
  )

2. Open command prompt and type
   sqlplus username/passowrd@oracle_connection_alias

Example :
username : your_database_username
password : Your_database_password
oracle_connection_alias : SCHEMADEV for above example.

For the pull to refresh i am using

DGElasticPullToRefresh

https://github.com/gontovnik/DGElasticPullToRefresh

Installation

pod 'DGElasticPullToRefresh'

import DGElasticPullToRefresh

and put this function into your swift file and call this funtion from your

override func viewWillAppear(_ animated: Bool)

     func Refresher() {
      let loadingView = DGElasticPullToRefreshLoadingViewCircle()
      loadingView.tintColor = UIColor(red: 255.0/255.0, green: 255.0/255.0, blue: 255.0/255.0, alpha: 1.0)
      self.table.dg_addPullToRefreshWithActionHandler({ [weak self] () -> Void in

          //Completion block you can perfrom your code here.

           print("Stack Overflow")

           self?.table.dg_stopLoading()
           }, loadingView: loadingView)
      self.table.dg_setPullToRefreshFillColor(UIColor(red: 255.0/255.0, green: 57.0/255.0, blue: 66.0/255.0, alpha: 1))
      self.table.dg_setPullToRefreshBackgroundColor(self.table.backgroundColor!)
 }

And dont forget to remove reference while view will get dissapear

to remove pull to refresh put this code in to your

override func viewDidDisappear(_ animated: Bool)

override func viewDidDisappear(_ animated: Bool) {
      table.dg_removePullToRefresh()

 }

And it will looks like

Happy coding :)

If you want a code that is readable by all programmers (c++, java, and others) use the original old form instead of cryptographic new features

atp::ta::DataDrawArrayInfo* ddai;
for(size_t i = 0; i < m_dataDraw->m_dataDrawArrayInfoList.size(); i++) {
    ddai = m_dataDraw->m_dataDrawArrayInfoList[i];
    //...
}

The way I did it can be found in this Stack Overflow question.

It is important to use resetModules before each test and then dynamically import the module inside the test:

describe('environmental variables', () => {
  const OLD_ENV = process.env;

  beforeEach(() => {
    jest.resetModules() // Most important - it clears the cache
    process.env = { ...OLD_ENV }; // Make a copy
  });

  afterAll(() => {
    process.env = OLD_ENV; // Restore old environment
  });

  test('will receive process.env variables', () => {
    // Set the variables
    process.env.NODE_ENV = 'dev';
    process.env.PROXY_PREFIX = '/new-prefix/';
    process.env.API_URL = 'https://new-api.com/';
    process.env.APP_PORT = '7080';
    process.env.USE_PROXY = 'false';

    const testedModule = require('../../config/env').default

    // ... actual testing
  });
});

If you look for a way to load environment values before running the Jest look for the answer below. You should use setupFiles for that.

Practical example Using Jquery for a dropdown menu ! On mouse over on #IconLoggedinUxExternal shows div#ExternalMenuLogin and set time out to hide the div#ExternalMenuLogin

On mouse over on div#ExternalMenuLogin it cancels the timeout. On mouse out on div#ExternalMenuLogin it sets the timeout.

The point here is always to invoke clearTimeout before set the timeout, as so, avoiding double calls

var ExternalMenuLoginTO;
$('#IconLoggedinUxExternal').on('mouseover mouseenter', function () {

    clearTimeout( ExternalMenuLoginTO )
    $("#ExternalMenuLogin").show()
});

$('#IconLoggedinUxExternal').on('mouseleave mouseout', function () {

    clearTimeout( ExternalMenuLoginTO )    
    ExternalMenuLoginTO = setTimeout(
        function () {

            $("#ExternalMenuLogin").hide()

        }
        ,1000
    );
    $("#ExternalMenuLogin").show()
});

$('#ExternalMenuLogin').on('mouseover mouseenter', function () {

    clearTimeout( ExternalMenuLoginTO )
});
$('#ExternalMenuLogin').on('mouseleave mouseout', function () {

    clearTimeout( ExternalMenuLoginTO )
    ExternalMenuLoginTO = setTimeout(
        function () {

            $("#ExternalMenuLogin").hide()

        }
        ,500
    );
});

Off the top of my head, you can eliminate the lambda:

reduce(list.__add__, map(list, [mi.image_set.all() for mi in list_of_menuitems]))

Or even eliminate the map, since you've already got a list-comp:

reduce(list.__add__, [list(mi.image_set.all()) for mi in list_of_menuitems])

You can also just express this as a sum of lists:

sum([list(mi.image_set.all()) for mi in list_of_menuitems], [])

For Kotlin fans:

1. U can create a more generic extension :

 private fun Bitmap.addOverlay(@DimenRes marginTop: Int, @DimenRes marginLeft: Int, overlay: Bitmap): Bitmap? {
        val bitmapWidth = this.width
        val bitmapHeight = this.height
        val marginLeft = shareBitmapWidth - overlay.width - resources.getDimension(marginLeft)
        val finalBitmap = Bitmap.createBitmap(bitmapWidth, bitmapHeight, this
            .config)

        val canvas = Canvas(finalBitmap)
        canvas.drawBitmap(this, Matrix(), null)
        canvas.drawBitmap(overlay, marginLeft, resources.getDimension(marginTop), null)
        return finalBitmap
    }

2. Then use it as follow:

 bitmap.addOverlay( R.dimen.top_margin, R.dimen.left_margin, overlayBitmap)

It is not possible prolly cuz it would be so easy to XSS. Also , current HTML sanitizers that are available don't disallow content property.

(Definitely not the greatest answer here but I just wanted to share an insight other than the "according to spec... ")

You can have many constructors as long as they take in different parameters. But the compiler putting a default constructor in is not called "constructor overriding".

You have to create an object. Assign the values to the object. Then push it into the array:

var nietos = [];
var obj = {};
obj["01"] = nieto.label;
obj["02"] = nieto.value;
nietos.push(obj);

[u'String'] is a text representation of a list that contains a Unicode string on Python 2.

If you run print(some_list) then it is equivalent to
print'[%s]' % ', '.join(map(repr, some_list)) i.e., to create a text representation of a Python object with the type list, repr() function is called for each item.

Don't confuse a Python object and its text representation—repr('a') != 'a' and even the text representation of the text representation differs: repr(repr('a')) != repr('a').

repr(obj) returns a string that contains a printable representation of an object. Its purpose is to be an unambiguous representation of an object that can be useful for debugging, in a REPL. Often eval(repr(obj)) == obj.

To avoid calling repr(), you could print list items directly (if they are all Unicode strings) e.g.: print ",".join(some_list)—it prints a comma separated list of the strings: String

Do not encode a Unicode string to bytes using a hardcoded character encoding, print Unicode directly instead. Otherwise, the code may fail because the encoding can't represent all the characters e.g., if you try to use 'ascii' encoding with non-ascii characters. Or the code silently produces mojibake (corrupted data is passed further in a pipeline) if the environment uses an encoding that is incompatible with the hardcoded encoding.

Ok, if it doesn't matter which value in the non-duplicated column you select, this should be pretty easy:

dat <- data.frame(id=c(1,1,3),id2=c(1,1,4),somevalue=c("x","y","z"))
> dat[!duplicated(dat[,c('id','id2')]),]
  id id2 somevalue
1  1   1         x
3  3   4         z

Inside the duplicated call, I'm simply passing only those columns from dat that I don't want duplicates of. This code will automatically always select the first of any ambiguous values. (In this case, x.)

I believe it is -- when you are working with JS strings.

If you are generating HTML, though, you will have to use <br /> tags (not \n, as you're not dealing with JS anymore)

If you do grouping by virtue of including GROUP BY clause, any expression in SELECT, which is not group function (or aggregate function or aggregated column) such as COUNT, AVG, MIN, MAX, SUM and so on (List of Aggregate functions) should be present in GROUP BY clause.

Example (correct way) (here employee_id is not group function (non-aggregated column), so it must appear in GROUP BY. By contrast, sum(salary) is a group function (aggregated column), so it is not required to appear in the GROUP BYclause.

   SELECT employee_id, sum(salary) 
   FROM employees
   GROUP BY employee_id; 

Example (wrong way) (here employee_id is not group function and it does not appear in GROUP BY clause, which will lead to the ORA-00979 Error .

   SELECT employee_id, sum(salary) 
   FROM employees;

To correct you need to do one of the following :

• Include all non-aggregated expressions listed in SELECT clause in the GROUP BY clause
• Remove group (aggregate) function from SELECT clause.

You did not add # before id of the button. You do not have right selector in your jquery code. So jquery is never execute in your button click. its submitted your form directly not passing any ajax request.

See documentation: http://api.jquery.com/category/selectors/
its your friend.

Try this:

It seems that id: $("#Shareitem").val() is wrong if you want to pass the value of

<input type="hidden" name="id" value="" id="id">

you need to change this line:

id: $("#Shareitem").val()

by

id: $("#id").val()

All together:

 <script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
    <script>
    $(document).ready(function(){
      $("#Shareitem").click(function(e){
          e.preventDefault();
        $.ajax({type: "POST",
                url: "/imball-reagens/public/shareitem",
                data: { id: $("#Shareitem").val(), access_token: $("#access_token").val() },
                success:function(result){
          $("#sharelink").html(result);
        }});
      });
    });
    </script>

Other than using the Navigator/Proj Explorer and choosing files and doing 'Compare With'->'Each other'... I prefer opening both files in Eclipse and using 'Compare With'->'Opened Editor'->(pick the opened tab)... You can get this feature via the AnyEdit eclipse plugin located here (you can use Install Software via Eclipse->Help->Install New Software screen): http://andrei.gmxhome.de/eclipse/

I think you want

listb.pop()[0]

The expression listb.pop is a valid python expression which results in a reference to the pop method, but doesn't actually call that method. You need to add the open and close parentheses to call the method.

You need to use an anonymous function like this:

$('.leadtoscore').click(function() {
  add_event('shot')
});

You can call it like you have in the example, just a function name without parameters, like this:

$('.leadtoscore').click(add_event);

But the add_event method won't get 'shot' as it's parameter, but rather whatever click passes to it's callback, which is the event object itself...so it's not applicable in this case, but works for many others. If you need to pass parameters, use an anonymous function...or, there's one other option, use .bind() and pass data, like this:

$('.leadtoscore').bind('click', { param: 'shot' }, add_event);

And access it in add_event, like this:

function add_event(event) {
  //event.data.param == "shot", use as needed
}

Thought I would add another option for those who might already be using the Underscore.js library in their script. Underscore.js has an isArray() function (see http://underscorejs.org/#isArray).

_.isArray(object) 

Returns true if object is an Array.

All explanations here are great, but lacking a very important thing: How do you install production dependencies only? (without the development dependencies). We separate dependencies from devDependencies by using --save or --save-dev. To install all we use:

npm i

To install only production packages we should use:

npm i --only=production

MacPorts is another package manager for OS X:.

Installation instructions are at The MacPorts Project -- Download & Installation after which one issues sudo port install pythonXX, where XX is 27 or 35.

Find can be used to print out the file-size in bytes with %s as a printf. %h/%f prints the directory prefix and filename respectively. \n forces a newline.

Example

find . -size +10000k -printf "%h/%f,%s\n"

Output

./DOTT/extract/DOTT/TENTACLE.001,11358470
./DOTT/Day Of The Tentacle.nrg,297308316
./DOTT/foo.iso,297001116

If you want to compare image for similarity,I suggest you to used OpenCV. In OpenCV, there are few feature matching and template matching. For feature matching, there are SURF, SIFT, FAST and so on detector. You can use this to detect, describe and then match the image. After that, you can use the specific index to find number of match between the two images.

Every number from 1,2,5,6,9,10... is divisible by 4 with remainder 1 or 2.

>>> ','.join(str(i) for i in xrange(100) if i % 4 in (1,2))
'1,2,5,6,9,10,13,14,...'

changed from your code :

private String toDate(long timestamp) {
    Date date = new Date (timestamp * 1000 -  24 * 60 * 60 * 1000);
   return new SimpleDateFormat("yyyy-MM-dd").format(date).toString();

}

but you do better using calendar.

This is my "one-line" solution:

$.postJSON = function(url, data, func) { $.post(url+(url.indexOf("?") == -1 ? "?" : "&")+"callback=?", data, func, "json"); }

In order to use jsonp, and POST method, this function adds the "callback" GET parameter to the URL. This is the way to use it:

$.postJSON("http://example.com/json.php",{ id : 287 }, function (data) {
   console.log(data.name);
});

The server must be prepared to handle the callback GET parameter and return the json string as:

jsonp000000 ({"name":"John", "age": 25});

in which "jsonp000000" is the callback GET value.

In PHP the implementation would be like:

print_r($_GET['callback']."(".json_encode($myarr).");");

I made some cross-domain tests and it seems to work. Still need more testing though.

Answering to myself. From the RequireJS website:

//THIS WILL FAIL
define(['require'], function (require) {
    var namedModule = require('name');
});

This fails because requirejs needs to be sure to load and execute all dependencies before calling the factory function above. [...] So, either do not pass in the dependency array, or if using the dependency array, list all the dependencies in it.

My solution:

// Modules configuration (modules that will be used as Jade helpers)
define(function () {
    return {
        'moment':   'path/to/moment',
        'filesize': 'path/to/filesize',
        '_':        'path/to/lodash',
        '_s':       'path/to/underscore.string'
    };
});

The loader:

define(['jade', 'lodash', 'config'], function (Jade, _, Config) {
    var deps;

    // Dynamic require
    require(_.values(Config), function () {
        deps = _.object(_.keys(Config), arguments);

        // Use deps...
    });
});

I recommend using the json_xs command line utility which is included in the JSON::XS perl module. JSON::XS is a Perl module for serializing/deserializing JSON, on a Debian or Ubuntu machine you can install it like this:

sudo apt-get install libjson-xs-perl

It is obviously also available on CPAN.

To use it to format JSON obtained from a URL you can use curl or wget like this:

$ curl -s http://page.that.serves.json.com/json/ | json_xs

or this:

$ wget -q -O - http://page.that.serves.json.com/json/ | json_xs

and to format JSON contained in a file you can do this:

$ json_xs < file-full-of.json

To reformat as YAML, which some people consider to be more humanly-readable than JSON:

$ json_xs -t yaml < file-full-of.json

Rename the id of your ListView like this,

<ListView android:id="@android:id/list"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>

Since you are using ListActivity your xml file must specify the keyword android while mentioning to a ID.

If you need a custom ListView then instead of Extending a ListActivity, you have to simply extend an Activity and should have the same id without the keyword android.

There are already useful answers to this question above, however there is one more possibility which I don't see being addressed here.

We should consider that the java is installed correctly (that's why eclipse could have been launched in the first place), and the JDK is also added correctly to the eclipse. So the issue might be for some reason (e.g. migration of eclipse to another OS) the path for javadoc is not right which you can easily check and modify in the javadoc wizard page. Here is detailed instructions:

1. Open the javadoc wizard by Project->Generate Javadoc...
2. In the javadoc wizard window make sure the javadoc command path is correct as illustrated in below screenshot:

Created a handy function for this..

function findAndRemove(array, property, value) {
  array.forEach(function(result, index) {
    if(result[property] === value) {
      //Remove from array
      array.splice(index, 1);
    }    
  });
}

//Checks countries.result for an object with a property of 'id' whose value is 'AF'
//Then removes it ;p
findAndRemove(countries.results, 'id', 'AF');

If you like python and have an option to install a package, you can use this utility that I made.

# install pythonp
python -m pip install pythonp

pythonp "5*5"
25

pythonp "1 / (1+math.exp(0.5))"
0.3775406687981454

# define a custom function and pass it to another higher-order function
pythonp "n=10;functools.reduce(lambda x,y:x*y, range(1,n+1))"     
3628800

Use:

pip install -r requirements.txt

For further details, please check the help option:

pip install --help

We can find the option '-r' -

-r, --requirement Install from the given requirements file. This option can be used multiple times.

Further information on some commonly used pip install options (this is the help option on the pip install command):

Also the above is the complete set of options. Please use pip install --help for the complete list of options.

I got better results with 6 different shadows:

.strokeThis{
    text-shadow:
    -1px -1px 0 #ff0,
    0px -1px 0 #ff0,
    1px -1px 0 #ff0,
    -1px 1px 0 #ff0,
    0px 1px 0 #ff0,
    1px 1px 0 #ff0;
}

You could create your own class of type Quiz and then deserialize with strong type:

Example:

quizresult = JsonConvert.DeserializeObject<Quiz>(args.Message,
                 new JsonSerializerSettings
                 {
                     Error = delegate(object sender1, ErrorEventArgs args1)
                     {
                         errors.Add(args1.ErrorContext.Error.Message);
                         args1.ErrorContext.Handled = true;
                     }
                 });

And you could also apply a schema validation.

http://james.newtonking.com/projects/json/help/index.html

Short answer: yes. You can do with this:

var myArray = ["element1", "element2", "element3", "element4"];

for (i = 0; i < myArray.length; i++) {
  console.log(myArray[i]);
}

In a browser console, you can see something like "element1", "element2", etc., printed.

<html>

<head>
<script type="text/javascript">
function insertText () {
    document.getElementById('td1').innerHTML = "Some text to enter";
}
</script>
</head>

<body onload="insertText();">
    <table>
        <tr>
            <td id="td1"></td>
        </tr>
    </table>
</body>
</html>

lsof -t -i tcp:8000 | xargs kill -9

Modified Nathan's solution a little for Bootstrap 3. This will set a loading text to the submit button. In addition it will timeout after 30 seconds and allow the form to be resubmitted.

jQuery.fn.preventDoubleSubmission = function() {
  $('input[type="submit"]').data('loading-text', 'Loading...');

  $(this).on('submit',function(e){
    var $form = $(this);

    $('input[type="submit"]', $form).button('loading');

    if ($form.data('submitted') === true) {
      // Previously submitted - don't submit again
      e.preventDefault();
    } else {
      // Mark it so that the next submit can be ignored
      $form.data('submitted', true);
      $form.setFormTimeout();
    }
  });

  // Keep chainability
  return this;
};

jQuery.fn.setFormTimeout = function() {
  var $form = $(this);
  setTimeout(function() {
    $('input[type="submit"]', $form).button('reset');
    alert('Form failed to submit within 30 seconds');
  }, 30000);
};

This should work:

# To export to file (data only)
mysqldump -u [user] -p[pass] --no-create-info mydb > mydb.sql

# To export to file (structure only)
mysqldump -u [user] -p[pass] --no-data mydb > mydb.sql

# To import to database
mysql -u [user] -p[pass] mydb < mydb.sql

NOTE: there's no space between -p & [pass]

If you're interested in disabling views in a specific ViewGroup then you can use the interesting, perhaps slightly obscure duplicateParentState. A view state is a set of boolean attributes such as pressed, enabled, activated, and others. Just use this on each child you want to sync to parent ViewGroup:

android:duplicateParentState="true"

Note that it duplicates the entire state and not just the enabled state. This may be what you want! Of course, this approach is best if you're loading layout XML.

Try one of these solutions

1. In vscode settings.json file add this entry "prettier.singleQuote": true
2. In vscode if you have .editorconfig file, add this line under the root [*] symbol quote_type = single
3. In vscode if you have .prettierrc file, add this line

{
    "singleQuote": true,
    "vetur.format.defaultFormatterOptions": {
        "prettier": {
            "singleQuote": true
        }
    }
}

run-sequence is the most clear way (at least until Gulp 4.0 is released)

With run-sequence, your task will look like this:

var sequence = require('run-sequence');
/* ... */
gulp.task('develop', function (done) {
    sequence('clean', 'coffee', done);
});

But if you (for some reason) prefer not using it, gulp.start method will help:

gulp.task('develop', ['clean'], function (done) {
    gulp.on('task_stop', function (event) {
        if (event.task === 'coffee') {
            done();
        }
    });
    gulp.start('coffee');
});

Note: If you only start task without listening to result, develop task will finish earlier than coffee, and that may be confusing.

You may also remove event listener when not needed

gulp.task('develop', ['clean'], function (done) {
    function onFinish(event) {
        if (event.task === 'coffee') {
            gulp.removeListener('task_stop', onFinish);
            done();
        }
    }
    gulp.on('task_stop', onFinish);
    gulp.start('coffee');
});

Consider there is also task_err event you may want to listen to. task_stop is triggered on successful finish, while task_err appears when there is some error.

You may also wonder why there is no official documentation for gulp.start(). This answer from gulp member explains the things:

gulp.start is undocumented on purpose because it can lead to complicated build files and we don't want people using it

(source: https://github.com/gulpjs/gulp/issues/426#issuecomment-41208007)

Depends on what your native code does, but v7a has support for hardware floating point operations, which makes a huge difference. armeabi will work fine on all devices, but will be a lot slower, and won't take advantage of newer devices' CPU capabilities. Do take some benchmarks for your particular application, but removing the armeabi-v7a binaries is generally not a good idea. If you need to reduce size, you might want to have two separate apks for older (armeabi) and newer (armeabi-v7a) devices.

I'm sure you can find an extensive list of differences by simply googling something such as 'Android IntentService vs Service'

One of the more important differences per example is that IntentService ends itself once it's done.

Some examples (quickly made up) could be;

IntentService: If you want to download a bunch of images at the start of opening your app. It's a one-time process and can clean itself up once everything is downloaded.

Service: A Service which will constantly be used to communicate between your app and back-end with web API calls. Even if it is finished with its current task, you still want it to be around a few minutes later, for more communication.

If someone wants expandable/collapsible version of the treeview from Vitaliy Bychik's answer, you can save some time :)

http://jsfiddle.net/mehmetatas/fXzHS/2/

$(function () {
    $('.tree li').hide();
    $('.tree li:first').show();
    $('.tree li').on('click', function (e) {
        var children = $(this).find('> ul > li');
        if (children.is(":visible")) children.hide('fast');
        else children.show('fast');
        e.stopPropagation();
    });
});

Also, make sure when you write the query involving the linked server, you include brackets like this:

SELECT * FROM [LinkedServer].[RemoteDatabase].[User].[Table]

I've found that at least on 2000/2005 the [] brackets are necessary, at least around the server name.

I use NUnit 3 and tried most of the other solutions I saw here. None of those worked for me.

Even though already selected, reselecting the "Playlist: All Tests" option in test explorer showed all hidden tests in my case. I need to do this after every rebuild.

I found this solution is the best:

public function priceFormat(float $price): string
{
    //https://stackoverflow.com/a/14531760/5884988
    $price = $price + 0;
    $split = explode('.', $price);
    return number_format($price, isset($split[1]) ? strlen($split[1]) : 2, ',', '.');
}

Though you already had the answer, thought to add some info.

As you mentioned Collections explicitly, you can't use listIterator to get the index for all types of collections.

List interfaces - ArrayList, LinkedList, Vector and Stack.

Has both iterator() and listIterator()

Set interfaces - HashSet, LinkedHashSet, TreeSet and EnumSet.

Has only iterator()

Map interfaces - HashMap, LinkedHashMap, TreeMap and IdentityHashMap

Has no iterators, but can be iterated using through the keySet() / values() or entrySet() as keySet() and entrySet() returns Set and values() returns Collection.

So its better to use iterators() with continuous increment of a value to get the current index for any collection type.

Some details (PL)

As we can read here (Peter Gulutzan) there is difference on sorting/comparing polish letter "L" (L with stroke - html esc: Ł) (lower case: "l" - html esc: ł) - we have following assumption:

utf8_polish_ci      L greater than L and less than M
utf8_unicode_ci     L greater than L and less than M
utf8_unicode_520_ci L equal to L
utf8_general_ci     L greater than Z

In polish language letter L is after letter L and before M. No one of this coding is better or worse - it depends of your needs.

The complete example with an array. Replace "constructArrayType()" by "constructCollectionType()" or any other type you need.

import java.io.IOException;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;

public class Sorting {

    private String property;

    private String direction;

    public Sorting() {

    }

    public Sorting(String property, String direction) {
        this.property = property;
        this.direction = direction;
    }

    public String getProperty() {
        return property;
    }

    public void setProperty(String property) {
        this.property = property;
    }

    public String getDirection() {
        return direction;
    }

    public void setDirection(String direction) {
        this.direction = direction;
    }

    public static void main(String[] args) throws JsonParseException, IOException {
        final String json = "[{\"property\":\"title1\", \"direction\":\"ASC\"}, {\"property\":\"title2\", \"direction\":\"DESC\"}]";
        ObjectMapper mapper = new ObjectMapper();
        Sorting[] sortings = mapper.readValue(json, TypeFactory.defaultInstance().constructArrayType(Sorting.class));
        System.out.println(sortings);
    }
}

This will work:

override func viewDidLoad() {
    super.viewDidLoad()
    // Swift block syntax (iOS 10+)
    let timer = Timer(timeInterval: 0.4, repeats: true) { _ in print("Done!") }
    // Swift >=3 selector syntax
    let timer = Timer.scheduledTimer(timeInterval: 0.4, target: self, selector: #selector(self.update), userInfo: nil, repeats: true)
    // Swift 2.2 selector syntax
    let timer = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: #selector(MyClass.update), userInfo: nil, repeats: true)
    // Swift <2.2 selector syntax
    let timer = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: "update", userInfo: nil, repeats: true)
}

// must be internal or public. 
@objc func update() {
    // Something cool
}

For Swift 4, the method of which you want to get the selector must be exposed to Objective-C, thus @objc attribute must be added to the method declaration.

Add 0.001 first to the number and then call setScale(2, RoundingMode.ROUND_HALF_UP)

Code example:

public static void main(String[] args) {
    BigDecimal a = new BigDecimal("10.12445").add(new BigDecimal("0.001"));
    BigDecimal b = a.setScale(2, BigDecimal.ROUND_HALF_UP);
    System.out.println(b);
}

For me, you can't. But if that suits your needs, you could have speed and formatting by copying the whole range at once, instead of looping:

range("B2:B5002").Copy Destination:=Sheets("Output").Cells(startrow, 2)

And, by the way, you can build a custom range string, like Range("B2:B4, B6, B11:B18")

edit: if your source is "sparse", can't you just format the destination at once when the copy is finished ?

From MS's Patterns & Practices documentation:

Data Validation and Error Reporting

Your view model or model will often be required to perform data validation and to signal any data validation errors to the view so that the user can act to correct them.

Silverlight and WPF provide support for managing data validation errors that occur when changing individual properties that are bound to controls in the view. For single properties that are data-bound to a control, the view model or model can signal a data validation error within the property setter by rejecting an incoming bad value and throwing an exception. If the ValidatesOnExceptions property on the data binding is true, the data binding engine in WPF and Silverlight will handle the exception and display a visual cue to the user that there is a data validation error.

However, throwing exceptions with properties in this way should be avoided where possible. An alternative approach is to implement the IDataErrorInfo or INotifyDataErrorInfo interfaces on your view model or model classes. These interfaces allow your view model or model to perform data validation for one or more property values and to return an error message to the view so that the user can be notified of the error.

The documentation goes on to explain how to implement IDataErrorInfo and INotifyDataErrorInfo.

You can use this syntax if some grads are attached with your variables.

y=torch.Tensor.cpu(x).detach().numpy()[:,:,:,-1]

Or you could use:

android.os.SystemClock.sleep(checkEvery)

which has the advantage of not requiring a wrapping try ... catch.

function drawDataURIOnCanvas(strDataURI, canvas) {
    "use strict";
    var img = new window.Image();
    img.addEventListener("load", function () {
        canvas.getContext("2d").drawImage(img, 0, 0);
    });
    img.setAttribute("src", strDataURI);
}

You can use the LocalForward directive in your host yam section of ~/.ssh/config:

LocalForward 5901 computer.myHost.edu:5901

\df <schema>.*

in psql gives the necessary information.

To see the query that's used internally connect to a database with psql and supply an extra "-E" (or "--echo-hidden") option and then execute the above command.

What @Bogdan Maxim said. Or change to use InProc if you're not using an external sesssion state server.

<sessionState mode="InProc" timeout="20" cookieless="AutoDetect" />

Look here for more info on the SessionState directive.

Storing the timeStamp in window.sessionStorage if it is not already set. This will give a unique value for each tab(even if the URLs are same)

http://www.javascriptkit.com/javatutors/domstorage.shtml

https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage

Hope this helps.

XAML :

<DataGrid x:Name="dgv_Students" AutoGenerateColumns="False"  ItemsSource="{Binding People}" Margin="10,20,10,0" Style="{StaticResource AzureDataGrid}" FontFamily="B Yekan" Background="#FFB9D1BA" >
                <DataGrid.Columns>
                    <DataGridTemplateColumn>
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <Button Click="Button_Click_dgvs">Text</Button>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                    </DataGrid.Columns>

Code Behind :

       private IEnumerable<DataGridRow> GetDataGridRowsForButtons(DataGrid grid)
{ //IQueryable 
    var itemsSource = grid.ItemsSource as IEnumerable;
    if (null == itemsSource) yield return null;
    foreach (var item in itemsSource)
    {
        var row = grid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;
        if (null != row & row.IsSelected) yield return row;
    }
}

void Button_Click_dgvs(object sender, RoutedEventArgs e)
{

    for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual)
        if (vis is DataGridRow)
        {
           // var row = (DataGrid)vis;

            var rows = GetDataGridRowsForButtons(dgv_Students);
            string id;
            foreach (DataGridRow dr in rows)
            {
                id = (dr.Item as tbl_student).Identification_code;
                MessageBox.Show(id);
                 break;
            }
            break;
        }
}

After clicking on the Button, the ID of that row is returned to you and you can use it for your Button name.

I have created a javascript version of the solution Tom Bisciglia suggested.

My code allows you to use a normal image map. All you have to do is load a few lines of CSS and a few lines of JS and... BOOM... your image map has hover states and is fully responsive! Magic right?

var images = document.querySelectorAll('img[usemap]');
images.forEach( function(image) {
    var mapid = image.getAttribute('usemap').substr(1);
    var imagewidth = image.getAttribute('width');
    var imageheight = image.getAttribute('height');
    var imagemap = document.querySelector('map[name="'+mapid+'"]');
    var areas = imagemap.querySelectorAll('area');

    image.removeAttribute('usemap');
    imagemap.remove();

    // create wrapper container
    var wrapper = document.createElement('div');
    wrapper.classList.add('imagemap');
    image.parentNode.insertBefore(wrapper, image);
    wrapper.appendChild(image);

    areas.forEach( function(area) {
        var coords = area.getAttribute('coords').split(',');
        var xcoords = [parseInt(coords[0]),parseInt(coords[2])];
        var ycoords = [parseInt(coords[1]),parseInt(coords[3])];
        xcoords = xcoords.sort(function(a, b){return a-b});
        ycoords = ycoords.sort(function(a, b){return a-b});
        wrapper.innerHTML += "<a href='"+area.getAttribute('href')+"' title='"+area.getAttribute('title')+"' class='area' style='left: "+((xcoords[0]/imagewidth)*100).toFixed(2)+"%; top: "+((ycoords[0]/imageheight)*100).toFixed(2)+"%; width: "+(((xcoords[1] - xcoords[0])/imagewidth)*100).toFixed(2)+"%; height: "+(((ycoords[1] - ycoords[0])/imageheight)*100).toFixed(2)+"%;'></a>";
    });
});

img {max-width: 100%; height: auto;}

.imagemap {position: relative;}
.imagemap img {display: block;}
.imagemap .area {display: block; position: absolute; transition: box-shadow 0.15s ease-in-out;}
.imagemap .area:hover {box-shadow: 0px 0px 1vw rgba(0,0,0,0.5);}

<!-- Image Map Generated by http://www.image-map.net/ -->
<img src="https://i.imgur.com/TwmCyCX.jpg" width="2000" height="2604" usemap="#image-map">
<map name="image-map">
    <area target="" alt="Zirconia Abutment" title="Zirconia Abutment" href="/" coords="3,12,199,371" shape="rect">
    <area target="" alt="Gold Abutment" title="Gold Abutment" href="/" coords="245,12,522,371" shape="rect">
    <area target="" alt="CCM Abutment" title="CCM Abutment" href="/" coords="564,12,854,369" shape="rect">
    <area target="" alt="EZ Post Abutment" title="EZ Post Abutment" href="/" coords="1036,12,1360,369" shape="rect">
    <area target="" alt="Milling Abutment" title="Milling Abutment" href="/" coords="1390,12,1688,369" shape="rect">
    <area target="" alt="Angled Abutment" title="Angled Abutment" href="/" coords="1690,12,1996,371" shape="rect">
    <area target="" alt="Temporary Abutment [Metal]" title="Temporary Abutment [Metal]" href="/" coords="45,461,506,816" shape="rect">
    <area target="" alt="Fuse Abutment" title="Fuse Abutment" href="/" coords="1356,461,1821,816" shape="rect">
    <area target="" alt="Lab Analog" title="Lab Analog" href="/" coords="718,935,1119,1256" shape="rect">
    <area target="" alt="Transfer Impression Coping Driver" title="Transfer Impression Coping Driver" href="/" coords="8,1330,284,1731" shape="rect">
    <area target="" alt="Impression Coping [Transfer]" title="Impression Coping [Transfer]" href="/" coords="310,1330,697,1731" shape="rect">
    <area target="" alt="Impression Coping [Pick-Up]" title="Impression Coping [Pick-Up]" href="/" coords="1116,1330,1560,1733" shape="rect">
</map>

You can also use button click event like this:

<asp:TemplateField>
    <ItemTemplate>
        <asp:Button ID="Button1" runat="server" Text="Button" 
                    OnClick="MyButtonClick" />
    </ItemTemplate>
</asp:TemplateField>

protected void MyButtonClick(object sender, System.EventArgs e)
{
    //Get the button that raised the event
    Button btn = (Button)sender;

    //Get the row that contains this button
    GridViewRow gvr = (GridViewRow)btn.NamingContainer;
} 

OR

You can do like this to get data:

 void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
 {

    // If multiple ButtonField column fields are used, use the
    // CommandName property to determine which button was clicked.
    if(e.CommandName=="Select")
    {
      // Convert the row index stored in the CommandArgument
      // property to an Integer.
      int index = Convert.ToInt32(e.CommandArgument);    

      // Get the last name of the selected author from the appropriate
      // cell in the GridView control.
      GridViewRow selectedRow = CustomersGridView.Rows[index];
    }
}

and Button in gridview should have command like this and handle rowcommand event:

<asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="false"
        onrowcommand="CustomersGridView_RowCommand"
        runat="server">

        <columns>
          <asp:buttonfield buttontype="Button" 
            commandname="Select"
            headertext="Select Customer" 
            text="Select"/>
        </columns>
  </asp:gridview>

Check full example on MSDN

you can use pure javascript atob() function to decode token into a string:

atob(token.split('.')[1]);

or parse directly it into a json object:

JSON.parse(atob(token.split('.')[1]));

read about atob() and btoa() built-in javascript functions Base64 encoding and decoding - Web APIs | MDN.

while(scanf("%d %d",a,b)!=EOF)
{

//do .....
}

I recently had the same issue while trying to access domains using CloudFlare Origin CA.

The only way I found to workaround/avoid HSTS cert exception on Chrome (Windows build) was following the short instructions in https://support.opendns.com/entries/66657664.

The workaround:
Add to Chrome shortcut the flag --ignore-certificate-errors, then reopen it and surf to your website.

Reminder:
Use it only for development purposes.

I see .btn:focus has an outline on it:

.btn:focus {
  outline: thin dotted;
  outline: 5px auto -webkit-focus-ring-color;
  outline-offset: -2px;
}

Try changing this to:

.btn:focus {
  outline: none !important;
}

Basically, look for any instances of outline on :focused elements — that's what's causing it.

Update - For Bootstrap v4:

.btn:focus {
  box-shadow: none;
}

re.search searches for the pattern throughout the string, whereas re.match does not search the pattern; if it does not, it has no other choice than to match it at start of the string.