Computer Programming Initialization Task
A Computer Programming Initialization Task is a Computer Programming Task that sets an initial value for a data object or variable.
- AKA: Program Initialization Task, Initialization.
- Context:
- Task Input: initializers.
- Task Output: computer program output.
- Example(s):
- Counter-Example(s):
- See: Machine Code, Computer Programming, Data Object, Programming Language, Run Time, Program Lifecycle, Object-Oriented Programming, Constructor (Object-Oriented Programming), Hexadecimal, Exclusive or.
References
2021
- (Wikipedia, 2021) ⇒ https://en.wikipedia.org/wiki/Initialization_(programming) Retrieved:2021-5-23.
- In computer programming, initialization (or initialisation) is the assignment of an initial value for a data object or variable. The manner in which initialization is performed depends on programming language, as well as type, storage class, etc., of an object to be initialized. Programming constructs which perform initialization are typically called initializers and initializer lists. Initialization is distinct from (and preceded by) declaration, although the two can sometimes be conflated in practice. The complement of initialization is finalization, which is primarily used for objects, but not variables.
Initialization is done either by statically embedding the value at compile time, or else by assignment at run time. A section of code that performs such initialization is generally known as "initialization code" and may include other, one-time-only, functions such as opening files; in object-oriented programming, initialization code may be part of a constructor (class method) or an initializer (instance method). Setting a memory location to hexadecimal zeroes is also sometimes known as "clearing" and is often performed by an exclusive or instruction (both operands specifying the same variable), at machine code level, since it requires no additional memory access.
- In computer programming, initialization (or initialisation) is the assignment of an initial value for a data object or variable. The manner in which initialization is performed depends on programming language, as well as type, storage class, etc., of an object to be initialized. Programming constructs which perform initialization are typically called initializers and initializer lists. Initialization is distinct from (and preceded by) declaration, although the two can sometimes be conflated in practice. The complement of initialization is finalization, which is primarily used for objects, but not variables.
2021
- (Swift Doc., 2021) ⇒ https://docs.swift.org/swift-book/LanguageGuide/Initialization.html Retrieved:2021-5-23.
- QUOTE: Initialization is the process of preparing an instance of a class, structure, or enumeration for use. This process involves setting an initial value for each stored property on that instance and performing any other setup or initialization that’s required before the new instance is ready for use.
You implement this initialization process by defining initializers, which are like special methods that can be called to create a new instance of a particular type. Unlike Objective-C initializers, Swift initializers don’t return a value. Their primary role is to ensure that new instances of a type are correctly initialized before they’re used for the first time.
Instances of class types can also implement a deinitializer, which performs any custom cleanup just before an instance of that class is deallocated. For more information about deinitializers, see Deinitialization.
- QUOTE: Initialization is the process of preparing an instance of a class, structure, or enumeration for use. This process involves setting an initial value for each stored property on that instance and performing any other setup or initialization that’s required before the new instance is ready for use.