Tutorial by Examples: on

app\Exceptions\Handler.php public function render($request, Exception $exception) { if ($exception instanceof ModelNotFoundException) { abort(404); } return parent::render($request, $exception); } You can catch / handle any exception that is thrown in Laravel.
- name: Run script as foo user command: bash.sh become: true become_user: foo
Lets have a look at the native app lifecycle methods for different platforms. Android. //Xamarin.Forms.Platform.Android.FormsApplicationActivity lifecycle methods: protected override void OnCreate(Bundle savedInstanceState); protected override void OnDestroy(); protected override void OnPause()...
If the engine is able to correctly predict you're using a specific small type for your values, it will be able to optimize the executed code. In this example, we'll use this trivial function summing the elements of an array and outputting the time it took: // summing properties var sum = (functio...
Here is a simple proof by induction. Require Import Coq.Setoids.Setoid. Require Import Coq.Arith.Lt. (* A number is less than or equal to itself *) Theorem aLTEa : forall a, a <= a. auto with arith. (* This follows by simple arithmetic *) Qed. Theorem simplALTE : forall a ...
Consider the following code: public async Task MethodA() { await MethodB(); // Do other work } public async Task MethodB() { await MethodC(); // Do other work } public async Task MethodC() { // Or await some other async work await Task.Delay(100); } ...
This was added to assets/js/theme/category.js in loaded(). You will also need to add {{inject "categoryProducts" category.products}} to templates/pages/category.html var mainImages = []; var rollOvers = []; this.context.categoryProducts.forEach(function(e, i) { if (e.images[0])...
The following example shows how to apply custom fonts to a Navigation Bar and includes fixes for some quirky behaviors found in Xcode. One also may apply the custom fonts to any other UIControls such as UILabels, UIButtons, and more by using the attributes inspector after the custom font is added to...
By default, floating point operations on float and double do not strictly adhere to the rules of the IEEE 754 specification. An expression is allowed to use implementation-specific extensions to the range of these values; essentially allowing them to be more accurate than required. strictfp disable...
The window.confirm() method displays a modal dialog with an optional message and two buttons, OK and Cancel. Now, let's take the following example: result = window.confirm(message); Here, message is the optional string to be displayed in the dialog and result is a boolean value indicating wheth...
Resource Acquisition Is Initialization (RAII) is a common idiom in resource management. In the case of dynamic memory, it uses smart pointers to accomplish resource management. When using RAII, an acquired resource is immediately given ownership to a smart pointer or equivalent resource manager. The...
from subprocess import check_call ok = check_call(['ffmpeg','-i','input.mp3','output.wav']) if ok: with open('output.wav', 'rb') as f: wav_file = f.read() note: http://superuser.com/questions/507386/why-would-i-choose-libav-over-ffmpeg-or-is-there-even-a-difference What are ...
Flask's built-in webserver is able to serve static assets, and this works fine for development. However, for production deployments that are using something like uWSGI or Gunicorn to serve the Flask application, the task of serving static files is one that is typically offloaded to the frontend webs...
Detailed instructions on getting serial-port set up or installed.
double res[MAX]; int i; #pragma omp parallel { #pragma omp for for (i=0;i< MAX; i++) { res[i] = huge(); } } The for loop will be executed in parallel. huge() is some method which can take too long to get execute. OpenMP supports a shortcut to write the ab...
#include <omp.h> void main () { int i; double ZZ, func(), res=0.0; #pragma omp parallel for reduction(+:res) private(ZZ) for (i=0; i< 1000; i++){ ZZ = func(I); res = res + ZZ; } } In the last line: Actually added to a private ...
<p class="alert alert-success" *ngIf="names.length > 2">Currently there are more than 2 names!</p>
NgFor provides Some values that can be aliased to local variables index -(variable) position of the current item in the iterable starting at 0 first -(boolean) true if the current item is the first item in the iterable last -(boolean) true if the current item is the last item in the iterable ...
Unfortunately Sencha does not directly give you access to Extjs 4. Their download SDK links lead directly to the newer version of Extjs (currently 6). Although you can still find websites that are hosting the library files (I will have to leave you to it since Extjs is under the LGPL license for o...
Detailed instructions on getting perforce set up or installed.

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