Tutorial by Examples: p

my_array = array('i', [1,2,3,4,5]) my_array.append(6) # array('i', [1, 2, 3, 4, 5, 6]) Note that the value 6 was appended to the existing array values.

A python array can be extended with more than one value using extend() method. Here is an example : my_array = array('i', [1,2,3,4,5]) my_extnd_array = array('i', [7,8,9,10]) my_array.extend(my_extnd_array) # array('i', [1, 2, 3, 4, 5, 7, 8, 9, 10]) We see that the array my_array was extended...

pop removes the last element from the array. Here is an example : my_array = array('i', [1,2,3,4,5]) my_array.pop() # array('i', [1, 2, 3, 4]) So we see that the last element (5) was popped out of array.

The reverse() method does what the name says it will do - reverses the array. Here is an example : my_array = array('i', [1,2,3,4,5]) my_array.reverse() # array('i', [5, 4, 3, 2, 1])

When you need a Python list object, you can utilize the tolist() method to convert your array to a list. my_array = array('i', [1,2,3,4,5]) c = my_array.tolist() # [1, 2, 3, 4, 5]

You are able to append a string to a character array using fromstring() my_char_array = array('c', ['g','e','e','k']) my_char_array.fromstring("stuff") print(my_char_array) #array('c', 'geekstuff')

Detailed instructions on getting testing set up or installed.

Sometimes, if an action should be bind to a collection view's cell selection, you have to implement the UICollectionViewDelegate protocol. Let's say the collection view is inside a UIViewController MyViewController. Objective-C In your MyViewController.h declares that it implements the UICollecti...

An alert box can be popped-up on a Xamarin.Forms Page by the method, DisplayAlert. We can provide a Title, Body (Text to be alerted) and one/two Action Buttons. Page offers two overrides of DisplayAlert method. public Task DisplayAlert (String title, String message, String cancel) This overri...

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An interface is declared like a class, but without access modifiers (public, private, ...). Also, no definitions are allowed, so variables and constants can't be used. Interfaces should always have an Unique Identifier, which can be generated by pressing Ctrl + Shift + G. IRepository = interface ...

Classes can implement more than one interface, as opposed to inheriting from more than one class (Multiple Inheritance) which isn't possible for Delphi classes. To achieve this, the name of all interfaces must be added comma-separated behind the base class. Of course, the implementing class must al...

Since the declaration of variables in interfaces isn't possible, the "fast" way of defining properites (property Value: TObject read FValue write FValue;) can't be used. Instead, the Getter and setter (each only if needed) have to be declared in the interface, too. IInterface = interface(...

First obtain the Microsoft.CodeAnalysis.CSharp.Workspaces nuget before continuing. var workspace = Microsoft.CodeAnalysis.MSBuild.MSBuildWorkspace.Create(); var project = await workspace.OpenProjectAsync(projectFilePath); var compilation = await project.GetCompilationAsync(); foreach (var diag...

A mixin is just a module that can be added (mixed in) to a class. one way to do it is with the extend method. The extend method adds methods of the mixin as class methods. module SomeMixin def foo puts "foo!" end end class Bar extend SomeMixin def baz puts "...

Heatmaps are useful for visualizing scalar functions of two variables. They provide a “flat” image of two-dimensional histograms (representing for instance the density of a certain area). The following source code illustrates heatmaps using bivariate normally distributed numbers centered at 0 in bo...

An SSH key has two pieces, the public key and the private key. The private key: Is usually in a file named id_rsa, but it can be given any name. CANNOT BE REGENERATED IF LOST!!!! Do not lose this file! If you lose it, you will not be able to get back into your instance. (StackOverflow is li...

In the root of your ionic app, there is a gulpfile.js file. Open it in an editor and paste the following gulp task: gulp.task('lint', function() { return gulp.src(['./www/js/**/*.js']) .pipe(jshint('.jshintrc')) .pipe(jshint.reporter('jshint-stylish')) .pipe(jshint...

Create a file named '.jshintrc' in the root of your app, where package.json is. *Note on windows: create a file named "jshintrc.txt". Then rename it to ".jshintrc." (notice the dot at the end). This is a configuration file. It can for example tell jshint to ignore certain varia...

After the subscription was created, it is important to manage its correct deallocation. The docs told us that If a sequence terminates in finite time, not calling dispose or not using addDisposableTo(disposeBag) won't cause any permanent resource leaks. However, those resources will be used unti...