Tutorial by Examples: er

When listening for keyboard events, we often need to check for common key codes. Remembering all the keyCodes is a hassle, so Vue provides aliases for the most commonly used keys: .enter .tab .delete (captures both “Delete” and “Backspace” keys) .esc .space .up .down .left .right For ...

.trim If you want user input to be trimmed automatically, you can add the trim modifier to your v-model managed inputs: <input v-model.trim="msg"> .number If you want user input to be automatically typecast as a number, you can do as follow: <input v-model.number=&q...

pthread_mutex_t queueMutex; pthread_cond_t queueCond; Queue queue; void Initialize() { //Initialize the mutex and the condition variable pthread_mutex_init(&queueMutex, NULL); pthread_cond_init(&queueCond, NULL); } void Producer() { //First we get some new data ...

Enumerating through Keys foreach ($key in $var1.Keys) { $value = $var1[$key] # or $value = $var1.$key } Enumerating through Key-Value Pairs foreach ($keyvaluepair in $var1.GetEnumerator()) { $key1 = $_.Key1 $val1 = $_.Val1 }

func multiply2(item: Int)-> Int { return (item + 2) } let multiply2ToMe = multiply2 // passing the function directly to the function as param print(math.performOperation(inputArray: arrayToBeProcessed, operation: multiply2ToMe)) Output: [3, 5, 7, 9, 11, 13, 10, 8, 6, 4, 102] ...

// function as return type print(math.performComplexOperation(valueOne: 4)(5)) Output: 9

The code below shows how to perform asynchronous navigation when the app is in a MasterDetailPage context. public async Task NavigateMasterDetail(Page page) { if (page == null) { return; } var masterDetail = App.Current.MainPage as Mas...

Using the --remote-debugging-port to expose a debugger accessible over HTTP is one way appliances can connect and interact with the document using the Chrome Debugging Protocol. chrome --headless --remote-debugging-port=9222 https://stackoverflow.com You can then navigate to http://localhost:9222 ...

Data types to string formatting Data types like int, float, double, long, boolean can be formatted to string using String.valueOf(). String.valueOf(1); //Output -> "1" String.valueOf(1.0); //Output -> "1.0" String.valueOf(1.2345); //Output -> "1.2345" Stri...

The query string is the part of a request following the URL, preceded by a ? mark. Example: https://encrypted.google.com/search?hl=en&q=stack%20overflow For this example, we are making a simple echo webserver that echos back everything submitted to it via the echo field in GET requests. Examp...

Flask also allows access to a CombinedMultiDict that gives access to both the request.form and request.args attributes under one variable. This example pulls data from a form field name submitted along with the echo field in the query string. Flask Example: from flask import Flask, request app...

You can't improve something you can't measure. To improve the performance of React components, you should be able to measure it. ReactJS provides with addon tools to measure performance. Import the react-addons-perf module to measure the performance import Perf from 'react-addons-perf' // ES6 var ...

$username = "[email protected]" $pwdTxt = Get-Content "C:\temp\Stored_Password.txt" $securePwd = $pwdTxt | ConvertTo-SecureString $credObject = New-Object System.Management.Automation.PSCredential -ArgumentList $username, $securePwd # Now, $credObject is having the credential...

with Ada.Containers.Synchronized_Queue_Interfaces; with Ada.Containers.Unbounded_Synchronized_Queues; with Ada.Text_IO; procedure Producer_Consumer_V1 is type Work_Item is range 1 .. 100; package Work_Item_Queue_Interfaces is new Ada.Containers.Synchronized_Queue_Interfaces ...

Within the CodeIgniter, there are two main directories to worry about: system and application. The system folder contains the core guts of CodeIgniter. The application folder will contain all of the code specific to your application, including models, controllers, views and other relevant libraries...

When you want for example enforce the use of the parameter Password if the parameter User is provided. (and vise versa) Function Do-Something { Param ( [Parameter(Mandatory=$true)] [String]$SomeThingToDo, [Parameter(ParameterSetName="Credentials", man...

Function Do-Something { Param ( [Parameter(Mandatory=$true)] [String]$SomeThingToDo, [Parameter(ParameterSetName="Silently", mandatory=$false)] [Switch]$Silently, [Parameter(ParameterSetName="Loudly", mandatory=$false)] ...

Contains a read-only hash table (Constant, AllScope) that displays details about the version of PowerShell that is running in the current session. $PSVersionTable #this call results in this: Name Value ---- ----- PSVersion ...

A synchronous producer-consumer solution ensures that the consumer reads every data item written by the producer exactly one time. Asynchronous solutions allow the consumer to sample the output of the producer. Either the consumer consumes the data faster than it is produced, or the consumer consume...

This example uses the main procedure as the producer task. In Ada the main procedure always runs in a task separate from all other tasks in the program, see minimal example. ------------------------------------------------------------------ -- Sampling Consumer -- --------------------------------...