Tutorial by Examples: st

UITextView has extra paddings by default. Sometimes it's annoying especially if you want to measure some text without view instance and place them at some area precisely. Do this to remove such paddings. messageTextView.textContainerInset = UIEdgeInsetsZero messageTextView.textContainer.lineFragm...

Anonymous class listener Before Java 8, it’s very common that an anonymous class is used to handle click event of a JButton, as shown in the following code. This example shows how to implement an anonymous listener within the scope of btn.addActionListener. JButton btn = new JButton("My Butto...

The attribute status_code contains the status code of the response good_req = requests.get('https://api.github.com/events') code_200 = good_req.status_code notfound_req = requests.get('https://api.github.com/not_found') code_404 = notfound_req.status_code requests.codes.__dict__ will provid...

We have 2 way, we can install Universal app in windows 10 devices (OS/Phone). One app works for both mobile and OS 1 Install using Power Shell command Step 1: Make sure app not have any error and developed, then right click on Universal app project in solution explorer. Step 2: Select Store and C...

add_action( 'pre_get_posts', 'single_category' ); function single_category( $query ) { if( !$query->is_main_query() || is_admin() ) return; $query->set( 'cat', '1' ); return; }

Sometimes you would like to change main WordPress query. Filter pre_get_posts is the way to go. For example using pre_get_posts you can tell main loop to show only 5 posts. Or to show posts only from one category, or excluding any category etc. add_action( 'pre_get_posts', 'my_callback_function' ...

add_action( 'pre_get_posts', 'single_category_exclude' ); function single_category_exclude( $query ) { if( !$query->is_main_query() || is_admin() ) return; $query->set( 'cat', '-1' ); return; }

All we need to do is to use set() method of $query object. It takes two arguments, first what we want to set and second what value to set. add_action( 'pre_get_posts', 'change_posts_per_page' ); function change_posts_per_page( $query ) { if( !$query->is_main_query() || is_admin() ) retu...

Let's say you need to check if an email address appears in a long list of email addresses. Use the MATCH function to return the row number on which the email address can be found. If there is no match, the function returns an #N/A error. =MATCH(F2,$D$2:$D$200,0) The value you're retrieving ...

The as operator will cast to a supertype. As it cannot fail, it does not return an optional. let name = "Ringo" let value = string as Any // `value` is of type `Any` now

To use the constant simply use its name: if (EARTH_IS_FLAT) { print "Earth is flat"; } print APP_ENV_UPPERCASE; or if you don't know the name of the constant in advance, use the constant function: // this code is equivalent to the above code $const1 = "EARTH_IS_FLAT&quo...

Per the Haskell 2010 Language Specification the following are standard IO functions available in Prelude, so no imports are required to use them. putChar :: Char -> IO () - writes a char to stdout Prelude> putChar 'a' aPrelude> -- Note, no new line putStr :: String -> IO () - writ...

As-per the Haskell 2010 Language Specification, the following are standard IO functions available in Prelude, so no imports are required to use them. getChar :: IO Char - read a Char from stdin -- MyChar.hs main = do myChar <- getChar print myChar -- In your shell runhaskell MyChar...

#include <stdio.h> #include <threads.h> #include <stdlib.h> struct my_thread_data { double factor; }; int my_thread_func(void* a) { struct my_thread_data* d = a; // do something with d printf("we found %g\n", d->factor); // return an succes...

Like normal HTML elements, it is possible for $scopes to have their own events. $scope events can be subscribed to using the following manner: $scope.$on('my-event', function(event, args) { console.log(args); // { custom: 'data' } }); If you need unregister an event listener, the $on func...

In Insert mode, press <C-r> and then % to insert the filename. This technique is applicable to all registers. For e.g. if in insert mode, you want to paste the current search pattern, you can type <C-r> and then /.

Sometimes it's useful to be able to extend a class with new functions. For example let's suppose that a string should be converted to a camel case string. So we need to tell TypeScript, that String contains a function called toCamelCase, which returns a string. interface String { toCamelCase()...

The following example shows the declaration of a property (StringProperty in this case) and demonstrates how to add a ChangeListener to it. import java.text.MessageFormat; import javafx.beans.property.SimpleStringProperty; import javafx.beans.property.StringProperty; import javafx.beans.value.Ch...

In VBA, Strings can be declared with a specific length; they are automatically padded or truncated to maintain that length as declared. Public Sub TwoTypesOfStrings() Dim FixedLengthString As String * 5 ' declares a string of 5 characters Dim NormalString As String Debug.Print Fi...

The JavaScript coding convention is to place the starting bracket of blocks on the same line of their declaration: if (...) { } function (a, b, ...) { } Instead of in the next line: if (...) { } function (a, b, ...) { } This has been adopted to avoid semicolon insertion ...