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Showing posts from December, 2010

Get All Documents From Collection Firestore Android Kotlin Code Example

Example 1: get one document based on id in firestore //retrieve one document and save it to userDetails const [ userDetails , setUserDetails ] = useState ( '' ) db . collection ( 'users' ) . doc ( id ) . get ( ) . then ( snapshot => setUserDetails ( snapshot . data ( ) ) ) Example 2: get data from firestore const [ hospitalsDetails , setHospitalsDetails ] = useState ( [ ] ) useEffect ( ( ) => { //load hospitals into hospitalsList const hospitals = [ ] db . collection ( 'Hospitals' ) . get ( ) . then ( snapshot => { snapshot . docs . forEach ( hospital => { let currentID = hospital . id let appObj = { .. . hospital . data ( ) , [ 'id' ] : currentID } hospitals . push ( appObj ) hospitals . push ( hospital . data ( ) ) } ) setHospitalsDetails ( hospitals )

Comboboxitem Wpf C# Code Example

Example: combobox WPF //adding combo box items WPF (XAML) < ComboBox > < ComboBoxItem > ComboBox Item # 1 < / ComboBoxItem > < ComboBoxItem IsSelected = "True" > ComboBox Item # 2 < / ComboBoxItem > < ComboBoxItem > ComboBox Item # 3 < / ComboBoxItem > < / ComboBox >

How To Print The Square Root Symbol In Python Code Example

Example 1: how to print the square root of a number in python from math import * # We import the math module print ( sqrt ( 16 ) ) # We print the square root of the number 64 Example 2: square root python 3 import math print ( math. sqrt ( 589485 ) )

Converting Hexadecimal To Float In JavaScript

Answer : Another possibility is to parse the digits separately, splitting the string up in two and treating both parts as ints during the conversion and then add them back together. function parseFloat(str, radix) { var parts = str.split("."); if ( parts.length > 1 ) { return parseInt(parts[0], radix) + parseInt(parts[1], radix) / Math.pow(radix, parts[1].length); } return parseInt(parts[0], radix); } var myno = 28.4382; var convno = myno.toString(16); var f = parseFloat(convno, 16); console.log(myno + " -> " + convno + " -> " + f); Try this. The string may be raw data (simple text) with four characters (0 - 255) or a hex string "0xFFFFFFFF" four bytes in length. jsfiddle.net var str = '0x3F160008'; function parseFloat(str) { var float = 0, sign, order, mantissa, exp, int = 0, multi = 1; if (/^0x/.exec(str)) { int = parseInt(str, 16); } else { for (var i = str.len

Wordpress - Ajaxurl Not Defined On Front End

Answer : In backend there is global ajaxurl variable defined by WordPress itself. This variable is not created by WP in frontend. It means that if you want to use AJAX calls in frontend, then you have to define such variable by yourself. Good way to do this is to use wp_localize_script . Let's assume your AJAX calls are in my-ajax-script.js file, then add wp_localize_script for this JS file like so: function my_enqueue() { wp_enqueue_script( 'ajax-script', get_template_directory_uri() . '/js/my-ajax-script.js', array('jquery') ); wp_localize_script( 'ajax-script', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) ); } add_action( 'wp_enqueue_scripts', 'my_enqueue' ); After localizing your JS file, you can use my_ajax_object object in your JS file: jQuery.ajax( { type: "post", dataType: "json", url: my

C++ Std::ends Example

Defined in header <ostream> template < class CharT , class Traits > std :: basic_ostream < CharT , Traits > & ends ( std :: basic_ostream < CharT , Traits > & os ) ; Inserts a null character into the output sequence os as if by calling os.put(CharT()) . This is an output-only I/O manipulator, it may be called with an expression such as out << std::ends for any out of type std::basic_ostream . Notes This manipulator is typically used with std:: ostrstream , when the associated output buffer needs to be null-terminated to be processed as a C string. Unlike std::endl , this manipulator does not flush the stream. Parameters os - reference to output stream Return value os (reference to the stream after insertion of the null character). Example # include <cstdio> # include <strstream> int main ( ) { std :: ostrstream oss ; oss << "Sample text: " << 42 <

Span Align Right Code Example

Example 1: span to left css <div class="title" > <span class="name" > Cumulative performance</span > <span class="date" > 20/02/2011</span > </div > .title .date { float : right } .title .name { float : left } Example 2: css span to right of div float : right Example 3: how to align span to right <div class="title" > <span class="name" > Cumulative performance</span > <span class="date" > 20/02/2011</span > </div > .title .date { float : right } .title .name { float : left }

How To Cancel Merge Git Code Example

Example 1: git undo comflicted merge git merge --abort Example 2: abort merge git git merge --abort Example 3: undo a git merge git reset --hard HEAD~ 1 git reset --hard <commit_sha> Example 4: git stop merge git reset --hard HEAD

Delay Unity C# Code Example

Example 1: Time delay C# unity void start ( ) StartCoroutine ( Text ( ) ) ; IEnumerator Text ( ) // <- its a standalone method { Debug . Log ( "Hello" ) yield return new WaitForSeconds ( 3 ) Debug . Log ( "ByeBye" ) } Example 2: how to delay something in c# unity Invoke ( "DoSomething" , 2 ) ; //this will happen after 2 seconds

Android Automotive Emulator "no System Images Installed For This Target"

Answer : You are not on the Canary channel for Android Studio, so you are not receiving updates for the Automotive Image. Your Android Studio version is only receiving updates for stable releases of Android. This can be fixed by switching over to the Canary channel in the Android Studio Preferences or downloading the Canary version. Go to 'Android Studio >> Preferences >> Appearance & Behavior >> System Settings >> Updates'. From there you should a drop-down menu for "Automatically check updates for 'Stable Channel'". Go to the drop-down menu and switch over to 'Canary Channel'. Another solution is to download the Canary version of Android Studio listed here: https://developer.android.com/studio/archive. Look for the releases that are labelled 'Canary'. For Automotive OS (not Android Auto) you must add system image (at the moment only for Volvo Polestar 2 image) In Android Studio, select Tools > SDK Man

Margin Top Bootstrap 4 Code Example

Example 1: bootstrap Margin and padding Use the margin and padding spacing utilities to control how elements and components are spaced and sized. Bootstrap 4 includes a five-level scale for spacing utilities , based on a 1 rem value default $spacer variable. Choose values for all viewports ( e.g. , .mr-3 for margin-right : 1 rem ) , or pick responsive variants to target specific viewports ( e.g. , .mr-md-3 for margin-right : 1 rem starting at the md breakpoint ) . <div class= "my-0 bg-warning" >Margin Y 0 </div> <div class= "my-1 bg-warning" >Margin Y 1 </div> <div class= "my-2 bg-warning" >Margin Y 2 </div> <div class= "my-3 bg-warning" >Margin Y 3 </div> <div class= "my-4 bg-warning" >Margin Y 4 </div> <div class= "my-5 bg-warning" >Margin Y 5 </div> <div class= "my-auto bg-warning" >Margin Y Auto</div> Examp

Border-shadow Code Example

Example 1: css box shadow #example1 { box-shadow : 10 px 10 px 8 px #888888 ; } Example 2: box shadow css #Box-shadow-example { Box-shadow : 0 10 px 20 px rgba ( 0 , 0 , 0 , 0.19 ) , 0 6 px 6 px rgba ( 0 , 0 , 0 , 0.23 ) ; } <!-- offset-x , offset-y , ( blur-radius and/or spread-radius=optional ) and color-->

Convert Excel Date To Text Date Code Example

Example: excel date to string conversion 'Excel formula to turn a date/time into text: = TEXT ( A1 , "DD/MM/YYYY hh:mm:ss AM/PM" ) 'Reference: ' https://support.office.com/en-us/article/text-function-20d5ac4d-7b94-49fd-bb38-93d29371225c '--------------------------------------------------------------------------------------------- 'VBA function to do the same thing: Function DateToText $ ( dbl # ) DateToText = Format ( dbl , "DD/MM/YYYY hh:mm:ss AM/PM" ) End Function

Make Width Of Div Fit Content Code Example

Example 1: css width fit to content width : fit-content ; Example 2: make div the size of the text inside div { display : inline-block ; } Example 3: css div width fit content display : inline-block ;

Bugatti Wiki Code Example

Example: bugatti ya can't afford it

Std Cin C++ Code Example

Example: cin in c++ cin >> varName ;