Tutorial by Topics: o

A Singleton is designed to ensure a class only has one instance and provides a global point of access to it. If you only require one instance or a convenient global point of access, but not both, consider other options before turning to the singleton. Global variables can make it harder to reason...

Inline expansion is a common optimization in compiled code that prioritized performance over binary size. It lets the compiler replace a function call with the actual body of the function; effectively copy/pasting code from one place to another at compile time. Since the call site is expanded to j...

Module Names In Elixir, module names such as IO or String are just atoms under the hood and are converted to the form :"Elixir.ModuleName" at compile time. iex(1)> is_atom(IO) true iex(2)> IO == :"Elixir.IO" true

.on('mouseover', function) .on('mouseout', function) .on('click', function) .on('mouseenter', function) .on('mouseleave', function) For a more in depth example where custom events are defined refer here.

In most cases, the spread operator *. is identical to calling .collect { it.________ }. def animals = ['cat', 'dog', 'fish'] assert animals*.length() == animals.collect { it.length() } But if the subject is null, they behave a differently: def animals = null assert animals*.length() == null...

child_process.exec(command[, options][, callback]) child_process.execFile(file[, args][, options][, callback]) child_process.fork(modulePath[, args][, options]) child_process.spawn(command[, args][, options]) child_process.execFileSync(file[, args][, options]) child_process.execSync(command[,...

In Kotlin, loops are compiled down to optimized loops wherever possible. For example, if you iterate over a number range, the bytecode will be compiled down to a corresponding loop based on plain int values to avoid the overhead of object creation.

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

.css( cssProperty ) // Get the rendered CSS property value .css( [cssProperty , ...] ) // Get values from Array of cssProperties .css( cssProperty, value ) // Set value .css( {cssProperty:value, ...} ) // Set properties and values .css( cssProperty, function ) // Expose the cssProperty to a...

INNER and OUTER are ignored. FULL is not implemented in MySQL. "commajoin" (FROM a,b WHERE a.x=b.y) is frowned on; use FROM a JOIN b ON a.x=b.y instead. FROM a JOIN b ON a.x=b.y includes rows that match in both tables. FROM a LEFT JOIN b ON a.x=b.y includes all ...

app.use(function(err, req, res, next) {}) // Basic middleware NameDescriptionerrObject with error informationreqHTTP request objectresHTTP response objectnextfunction used to start next middleware execution

In 1998, the there was a first publication of the standard making C++ an internally standardized language. From that time, C++ has evolved resulting in different dialects of C++. On this page, you can find an overview of all different standards and their changes compared to the previous version. The...

type CancelFunc func() func Background() Context func TODO() Context func WithCancel(parent Context) (ctx Context, cancel CancelFunc) func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) func...