Tutorial by Topics: ons

Explicit Conversion (aka "Casting"): (type) expression "Explicit conversion" is also commonly referred to as "casting".

(id)JSONObjectWithData:(NSData *)data options:(NSJSONReadingOptions)opt error:(NSError * _Nullable *)error OperatorDescriptiondataA data object containing JSON dataoptOptions for reading the JSON data and creating the Foundation objects.errorIf an error occurs, upon return contains an NSEr...

// +build tags Build tags are used for conditionally building certain files in your code. Build tags may ignore files that you don't want build unless explicitly included, or some predefined build tags may be used to have a file only be built on a particular architecture or operating system...

In computer programming, an enumerated type (also called enumeration or enum [..]) is a data type consisting of a set of named values called elements, members or enumerators of the type. The enumerator names are usually identifiers that behave as constants in the language. A variable that h...

Please play with these concepts yourself to really master them! The elm-repl (see the Introduction to the REPL) is probably a good place to play around with the code above. You can also play with elm-repl online.

Fold Expressions are supported for the following operators             +-*/%\ˆ&|<<>>+=-=*=/=%=\ˆ=&=|=<<=>>====!=<><=>=&&||,.*->* When folding over an empty sequence, a fold expression is ill-formed, except for the following three operators: ...

Unions are very useful tools, but come with a few important caveats: It is undefined behavior, per the C++ standard, to access an element of a union that was not the most recently modified member. Although a lot of C++ compilers permit this access in well defined ways, these are extensions an...

add_action( tag, function_to_call, priority, num_of_args ); add_filter( tag, function_to_call, priority, num_of_args ); ParameterExplanation$tag(string) (Required) The name of the action to which the $function is hooked.$function(callable) (Required) Requires a string containing the functio...

val (|>) : 'a -> ('a -> 'b) -> 'b val (@@) : ('a -> 'b) -> 'a -> 'b

Sessions are derived from dictionaries which means they will work with most common dictionary methods.

An F() expression is a way for Django to use a Python object to refer to the value of model field or annotated column in the database without having to pull the value into Python memory. This allows developers to avoid certain race conditions and also filtering results based on model field values. ...

MD5 and SHA1 are insecure and should be avoided. The examples exist for educational purposes and due to the fact that legacy software may still use these algorithms.

NUnit's Assert.That() form supports the use of constraints as its second parameter. All constraints provided out of the box by NUnit are available through the static classes Is, Has and Does. Constraints can be combined into fluent expressions using the built in methods And, Or and With. Expressio...