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List comprehensions in Python are concise, syntactic constructs. They can be utilized to generate lists from other lists by applying functions to each element in the list. The following section explains and demonstrates the use of these expressions. [x + 1 for x in (1, 2, 3)] # list comprehen...

Like structs and unlike classes, enums are value types and are copied instead of referenced when passed around. For more information about enums, see The Swift Programming Language.

VersionRelease DatePrivate Beta2016-03-2612016-07-2522016-08-0432016-08-2942016-09-1252016-09-2962016-10-2072016-11-29

A key component of interactive web systems, input tags are HTML elements designed to take a specific form of input from users. Different types of input elements can regulate the data entered to fit a specified format and provide security to password entry. <input type="" name=&quo...

Generator functions (defined by the function* keyword) run as coroutines, generating a series of values as they're requested through an iterator. function* name(parameters) { yield value; return value } generator = name(arguments) { value, done } = generator.next(value) { value, done } = ge...

Generators are lazy iterators created by generator functions (using yield) or generator expressions (using (an_expression for x in an_iterator)). yield <expr> yield from <expr> <var> = yield <expr> next(<iter>)

The HTML5 standards does not list the main element as a sectioning element.

You can read more about extensions in The Swift Programming Language.

value1 ** value2 pow(value1, value2[, value3]) value1.__pow__(value2[, value3]) value2.__rpow__(value1) operator.pow(value1, value2) operator.__pow__(value1, value2) math.pow(value1, value2) math.sqrt(value1) math.exp(value1) cmath.exp(value1) math.expm1(value1)

trap action sigspec... # Run "action" on a list of signals trap sigspec... # Omitting action resets traps for signals ParameterMeaning-pList currently installed traps-lList signal names and corresponding numbers The trap utility is a special shell built-in. It's defined in POSI...

Due to the flaws of rand(), many other default implementations have emerged over the years. Among those are: arc4random() (available on OS X and BSD) random() (available on Linux) drand48() (available on POSIX)

In Go, concurrency is achieved through the use of goroutines, and communication between goroutines is usually done with channels. However, other means of synchronization, like mutexes and wait groups, are available, and should be used whenever they are more convenient than channels. go doWork(...

.prototype.createdCallback() .prototype.attachedCallback() .prototype.detachedCallback() .prototype.attributeChangedCallback(name, oldValue, newValue) document.registerElement(name, [options]) ParameterDetailsnameThe name of the new custom element.options.extendsThe name of the native el...

ParameterDetailscard_dataJSON object containing payment information for transactioncredit_card_detailsJSON object containing credit card data that is sent to PayPal to be vaultedclient_idYour PayPal application client ID (OAuth 2 credentials)paypalPayPal Node SDK referencesecretYour PayPal applicat...

ParameterDetailsclientIdYour PayPal application client ID (OAuth 2 credentials)linksSimple reference object for all return HATEOAS links from PayPalpaymentIdThe ID of the payment returned from PayPal in order to complete paymentpayerIdThe ID of the payer returned from PayPal in order to complete pa...

Variable arguments are used by functions in the printf family (printf, fprintf, etc) and others to allow a function to be called with a different number of arguments each time, hence the name varargs. To implement functions using the variable arguments feature, use #include <stdarg.h>. To ca...