Tutorial by Examples: g

RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !(.*)/$ RewriteRule ^(.*)$ /$1/ [L,R=301] The first RewriteCond helps exclude the files. The second RewriteCond checks if there is already a trailing slash. If the case is so RewriteRule is not applied. If you have any URL that s...

Download the Apache Felix Framework Distribution and extract it into a directory: $ tar xf org.apache.felix.main.distribution-5.4.0.tar.gz $ cd felix-framework-5.4.0 And then start the framework with the following command: $ java -jar bin/felix.jar ____________________________ Welcome to...

In most cases, it is illegal to access an object of one type as though it were a different type (disregarding cv-qualifiers). Example: float x = 42; int y = reinterpret_cast<int&>(x); The result is undefined behavior. There are some exceptions to this strict aliasing rule: An obj...

The ProcessBuilder class makes it easy to send a command through the command line. All it requires is a List of Strings that make up the commands to be entered. You simply call the start() method on your ProcessBuilder instance to execute the command. If you have a program called Add.exe which take...

In general when making a call to the command line, the program will send the command and then continue its execution. However you may want to wait for the called program to finish before continuing your own execution (ex. The called program will write data to a file and your program needs that to a...

Launching external processes from Java using the raw java.lang.ProcessBuilder API directly can be a little cumbersome. The Apache Commons Exec library makes it a little easier. The ch.vorburger.exec library further extends upon Commons Exec to make it truly convenient: ManagedProcess proc = new ...

The ngCopy directive specifies behavior to be run on a copy event. Prevent a user from copying data <p ng-copy="blockCopy($event)">This paragraph cannot be copied</p> In the controller $scope.blockCopy = function(event) { event.preventDefault(); console.log(&quo...

The ngPaste directive specifies custom behavior to run when a user pastes content <input ng-paste="paste=true" ng-init="paste=false" placeholder='paste here'> pasted: {{paste}}

This proxy simply appends the string " went through proxy" to every string property set on the target object. let object = {}; let handler = { set(target, prop, value){ // Note that ES6 object syntax is used if('string' === typeof value){ target[prop] = valu...

Laravel's events allows to implement the Observer pattern. This can be used to send a welcome email to a user whenever they register on your application. New events and listeners can be generated using the artisan command line utility after registering the event and their particular listener in App...

Get current time: Time.now Time.new # is equivalent if used with no parameters Get specific time: Time.new(2010, 3, 10) #10 March 2010 (Midnight) Time.new(2015, 5, 3, 10, 14) #10:14 AM on 3 May 2015 Time.new(2050, "May", 3, 21, 8, 16, "+10:00") #09:08:16 PM on 3 May 2050...

Notice, this is only for angular-cli up to 1.0.0-beta.10 version ! Some libraries or plugins may not have typings. Without these, TypeScript can't type check them and therefore causes compilation errors. These libraries can still be used but differently than imported modules. Include a scr...

Though the transaction class method is called on some ActiveRecord class, the objects within the transaction block need not all be instances of that class. This is because transactions are per-database connection, not per-model. In this example a balance record is transactionally saved even though ...

ActiveRecord::Base.transaction uses the ActiveRecord::Rollback exception to distinguish a deliberate rollback from other exceptional situations. Normally, raising an exception will cause the .transaction method to rollback the database transaction and pass on the exception. But if you raise an Activ...

Run the Ansible playbook: $ ansible-playbook launch-server.yaml You should see output like PLAY [localhost] *************************************************************** TASK [setup] ******************************************************************* ok: [localhost] TASK [launch an U...

Using NuGet Install-Package Cirrious.FluentLayout An expanded example based on the starter example at the GitHub Page, a simple first name, last name labels and fields all stacked one on top of the other: public override void ViewDidLoad() { //create our labels and fields var firstNa...

Built-in functionals: lapply(), sapply(), and mapply() R comes with built-in functionals, of which perhaps the most well-known are the apply family of functions. Here is a description of some of the most common apply functions: lapply() = takes a list as an argument and applies the specified ...

User-defined functionals Users can create their own functionals to varying degrees of complexity. The following examples are from Functionals by Hadley Wickham: randomise <- function(f) f(runif(1e3)) lapply2 <- function(x, f, ...) { out <- vector("list", length(x...

Nesting is probably most often used to create more specific selectors, but it can also be used simply for code organization. Using the @at-root directive, you can ‘jump out’ of where you nest it in your Sass, bringing you back at the top level. Doing this allows you to keep styles grouped without cr...

Using SVG stroke makes it easier to create a Vector drawable with unified stroke length, as per Material Design guidelines: Consistent stroke weights are key to unifying the overall system icon family. Maintain a 2dp width for all stroke instances, including curves, angles, and both interior and ...