Tutorial by Examples: t

CanRunApplication To check to see if the user has permission to run the given application. If not, AccessDeniedException is thrown. Assert.CanRunApplication("WebEdit"); HasAccess HasAccess will check if the given parameter is true, otherwise an AccessDeniedException will be thrown. ...

When writing a class with generics in java, it is possible to ensure that the type parameter is an enum. Since all enums extend the Enum class, the following syntax may be used. public class Holder<T extends Enum<T>> { public final T value; public Holder(T init) { t...

from django.db import models, IntegerField from django.contrib.postgres.fields import ArrayField class IceCream(models.Model): scoops = ArrayField(IntegerField() # we'll use numbers to ID the scoops , size=6) # our parlor only lets you have 6 scoops When you us...

This query returns all cones with a chocolate scoop and a vanilla scoop. VANILLA, CHOCOLATE, MINT, STRAWBERRY = 1, 2, 3, 4 # constants for flavors choco_vanilla_cones = IceCream.objects.filter(scoops__contains=[CHOCOLATE, VANILLA]) Don't forget to import the IceCream model from your models.py ...

You can nest ArrayFields by passing another ArrayField as it's base_field. from django.db import models, IntegerField from django.contrib.postgres.fields import ArrayField class SudokuBoard(models.Model): numbers = ArrayField( ArrayField( models.IntegerField(), ...

This query returns all cones with either a mint scoop or a vanilla scoop. minty_vanilla_cones = IceCream.objects.filter(scoops__contained_by=[MINT, VANILLA])

In order to define a Set of your own type you need to conform your type to Hashable struct Starship: Hashable { let name: String var hashValue: Int { return name.hashValue } } func ==(left:Starship, right: Starship) -> Bool { return left.name == right.name } Now you can cr...

Create a Loader object: var loader:Loader = new Loader(); //import Add listeners on the loader. Standard ones are complete and io/security errors loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadComplete); //when the loader is done loading, call this function loader.co...

Twilio help build apps that communicate with everyone in the world. Voice & Video, Messaging and Authentication APIs for every application. You can get an API key for free. To send a message through Twilio, your application needs to make an HTTP POST request to Twilio with the following things...

A yield statement is similar to a return statement, except that instead of stopping execution of the function and returning, yield instead returns a Generator object and pauses execution of the generator function. Here is an example of the range function, written as a generator: function gen_one_t...

pip install sqlalchemy For most common applications, particularly web applications, it is usually recommended that beginners consider using a supplementary library, such as flask-sqlalchemy. pip install flask-sqlalchemy

The FlagsAttribute should be used whenever the enumerable represents a collection of flags, rather than a single value. The numeric value assigned to each enum value helps when manipulating enums using bitwise operators. Example 1 : With [Flags] [Flags] enum Colors { Red=1, Blue=2, ...

In order to inspect an image, you can use the image ID or the image name, consisting of repository and tag. Say, you have the CentOS 6 base image: ➜ ~ docker images REPOSITORY TAG IMAGE ID CREATED SIZE centos centos6 cf2c3...

Parentheses are needed to avoid ambiguity: foo 1 |> bar 2 |> baz 3 Should be written as: foo(1) |> bar(2) |> baz(3)

String.prototype.toUpperCase(): console.log('qwerty'.toUpperCase()); // 'QWERTY'

String.prototype.toLowerCase() console.log('QWERTY'.toLowerCase()); // 'qwerty'

Token pasting allows one to glue together two macro arguments. For example, front##back yields frontback. A famous example is Win32's <TCHAR.H> header. In standard C, one can write L"string" to declare a wide character string. However, Windows API allows one to convert between wide c...

Detailed instructions on getting ssl set up or installed.

/// <summary> /// Returns the data for the specified ID and timestamp. /// </summary> /// <param name="id">The ID for which to get data. </param> /// <param name="time">The DateTime for which to get data. </param> /// <returns>A Data...

To generate an XML documentation file from documentation comments in the code, use the /doc option with the csc.exe C# compiler. In Visual Studio 2013/2015, In Project -> Properties -> Build -> Output, check the XML documentation file checkbox: When you build the project, an XML file wi...