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IBOutlet is neither a reserved word nor a variable or class, is syntactic sugar for Interface Builder. After the Objective-C source code is pre-processed it is resolved to nothing. In Swift it's resolved as nil. It's declared in <UIKit/UINibDeclarations.h> as #ifndef IBOutlet #define IB...

Sequelize is a promise-based ORM for Node.js and io.js. It supports the dialects PostgreSQL, MySQL, MariaDB, SQLite and MSSQL and features solid transaction support, relations, read replication and more. For more information on what an "ORM" is, check out this article: Object-Relational...

Less is an open-source pre-processor. It makes writing and maintaining CSS easier by allowing the author to define and use variables, mixins etc. It also has features like Guards using which conditional styles can be written, Loops which help to keep the code DRY and a lot of in-built functions to...

contrast(<reference-color>, <output-for-light-refcolor>, <output-for-dark-refcolor>, <threshold>) lighten(<reference-color>, <amount>, <method>) darken(<reference-color>, <amount>, <method>) ParameterDetailsreference-colorThe colo...

Doze Mode is a set of changes and rules that put your phone to sleep when idle. On Android 6.0 Marshmallow: Doze mode gets activated after a while the screen is off, the device is stationary and it's running on battery. As you can see in the diagram above, when Doze Mode gets activated, the d...

Uses JSON file format Can also accept JavaScript style comments Overview The presence of a tsconfig.json file in a directory indicates that the directory is the root of a TypeScript project. The tsconfig.json file specifies the root files and the compiler options required to compile the...

API reference to the validation class can be found here: https://docs.phalconphp.com/en/latest/api/Phalcon_Validation.html If there is entity provided in \Phalcon\Validation you don't need to pass model key in \Phalcon\Validation\Validator\Uniqueness

if expr1 ?then? body1 elseif expr2 ?then? body2 ... ?else? ?bodyN? for start test next body while test body foreach varlist1 list1 ?varlist2 list2 ...? body Documentation: break, for, foreach, if, switch, uplevel, while

Option Explicit On is a recommended good practice with Visual Basic .Net. It helps you as the developer to produce cleaner, more stable, more bug-free, more maintainable code. In some cases it may also help you write programs with better performance too! with ref to https://support.microsoft.com/...

For managing dynamically allocated memory, the standard C library provides the functions malloc(), calloc(), realloc() and free(). In C99 and later, there is also aligned_alloc(). Some systems also provide alloca(). void *aligned_alloc(size_t alignment, size_t size); /* Only since C11 */ voi...

class BeetleGuy implements Climbs, Bulletproof { } applyMixins (BeetleGuy, [Climbs, Bulletproof]); ParameterDescriptionderivedCtorThe class that you want to use as the composition classbaseCtorsAn array of classes to be added to the composition class There are three rules to bear in mind ...

COBOL is the COmmon Business Oriented programming Language. Even though it has become a pronounceable name, COBOL is still treated as an acronym by the standards committee, and COBOL is the preferred spelling by the ISO and INCITS standards bodies. Standard Specification The current specifica...

Important point to note while using condition The condition class is referred as direct class (not as spring bean) so it can't use the @Value property injection i.e. no other spring beans can be injected within it. From java docs - Conditions must follow the same restrictions as BeanFactoryPos...

Emacs is described as a self-documenting editor, and provides lots of information on how to use it within the editor itself. Amongst the entry points to this documentation is a tutorial, information about what functions is available related to a given topic,a information about the bindings between...

It [Data.Vector] has an emphasis on very high performance through loop fusion, whilst retaining a rich interface. The main data types are boxed and unboxed arrays, and arrays may be immutable (pure), or mutable. Arrays may hold Storable elements, suitable for passing to and from C, and you c...