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Column typeDescription:primary_keyPrimary key:stringShorter string datatype. Allows limit option for maximum number of characters.:textLonger amount of text. Allows limit option for maximum number of bytes.:integerInteger. Allows limit option for maximum number of bytes.:bigintLarger integer:float...

Related topic: Grand Central Dispatch dispatch_async - Runs a block of code in a separate queue, and doesn't stop the current queue. If the queue is on a different thread than the one dispatch_async was called on, the code in the block will run while code after the dispatch_async also runs di...

The C preprocessor is a simple text parser/replacer that is run before the actual compilation of the code. Used to extend and ease the use of the C (and later C++) language, it can be used for: a. Including other files using #include b. Define a text-replacement macro using #define c. Conditional...

factor(x = character(), levels, labels = levels, exclude = NA, ordered = is.ordered(x), nmax = NA) Run ?factor or see the documentation online. An object with class factor is a vector with a particular set of characteristics. It is stored internally as an integer vector. It maintains a...

Functions and subroutines, in conjunction with modules, are the tools to break down a program into units. This makes the program more readable and manageable. Each one of these units can be thought of as part of the code that, ideally, could be compiled and tested in isolation. The main program(s...

A pointer is a type of variable which can store the address of another object or a function. <Data type> *<Variable name>; int *ptrToInt; void *ptrToVoid; /* C89+ */ struct someStruct *ptrToStruct; int **ptrToPtrToInt; int arr[length]; int *ptrToFirstElem = arr; /* For <C99...

Conditional expressions, involving keywords such as if, elif, and else, provide Python programs with the ability to perform different actions depending on a boolean condition: True or False. This section covers the use of Python conditionals, boolean logic, and ternary statements. <expressi...

HTTP for Humans Requests is the only Non-GMO HTTP library for Python, safe for human consumption. Requests allows you to send organic, grass-fed HTTP/1.1 requests, without the need for manual labor. There's no need to manually add query strings to your URLs, or to form-encode your POST data. K...

$response = wp_remote_get( $url, $args ); $response = wp_remote_post( $url, $args ); $response = wp_safe_remote_post( $url, $args ); ParameterDetails$url(string) (Required) Site URL to retrieve.$args(array) (Optional) Request arguments. Returns (WP_Error | array) The response as an ar...

String functions perform operations on string values and return either numeric or string values. Using string functions, you can, for example, combine data, extract a substring, compare strings, or convert a string to all uppercase or lowercase characters. CONCAT ( string_value1, string_value...

The Option<T> type is Rust's equivalent of nullable types, without all the issues that come with it. The majority of C-like languages allow any variable to be null if there is no data present, but the Option type is inspired by functional languages which favour 'optionals' (e.g. Ha...

The official Retrofit page describes itself as A type-safe REST client for Android and Java. Retrofit turns your REST API into a Java interface. It uses annotations to describe HTTP requests, URL parameter replacement and query parameter support is integrated by default. Additionally, it provides ...

A run is a consecutive sequence of repeated values or observations. For repeated values, R's "run-length encoding" concisely describes a vector in terms of its runs. Consider: dat <- c(1, 2, 2, 2, 3, 1, 4, 4, 1, 1) We have a length-one run of 1s; then a length-three run of 2s; the...