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  2. Jagged array - Wikipedia

    en.wikipedia.org/wiki/Jagged_array

    In contrast, two-dimensional arrays are always rectangular [4] so jagged arrays should not be confused with multidimensional arrays, but the former is often used to emulate the latter. Arrays of arrays in languages such as Java, PHP, Python (multidimensional lists), Ruby, C#.NET, Visual Basic.NET , Perl, JavaScript, Objective-C, Swift, and ...

  3. Initialization-on-demand holder idiom - Wikipedia

    en.wikipedia.org/wiki/Initialization-on-demand...

    The implementation of the idiom relies on the initialization phase of execution within the Java Virtual Machine (JVM) as specified by the Java Language Specification (JLS). [3] When the class Something is loaded by the JVM, the class goes through initialization. Since the class does not have any static variables to initialize, the ...

  4. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    The central idea is that the sender encodes the message in a redundant way, ... 0 (error-free) 001 0 010 0 100 0 111 1 (error-free) 110 1 101 1 011 1

  5. Initialization (programming) - Wikipedia

    en.wikipedia.org/wiki/Initialization_(programming)

    Here, the construct : re(0), im(0) is the initializer list. Sometimes the term "initializer list" is also used to refer to the list of expressions in the array or struct initializer. C++11 provides for a more powerful concept of initializer lists, by means of a template, called std::initializer_list.

  6. Array (data type) - Wikipedia

    en.wikipedia.org/wiki/Array_(data_type)

    In C and C++ arrays do not support the size function, so programmers often have to declare separate variable to hold the size, and pass it to procedures as a separate parameter. Elements of a newly created array may have undefined values (as in C), or may be defined to have a specific "default" value such as 0 or a null pointer (as in Java).

  7. Multidimensional parity-check code - Wikipedia

    en.wikipedia.org/wiki/Multidimensional_parity...

    A multidimensional parity-check code (MDPC) is a type of error-correcting code that generalizes two-dimensional parity checks to higher dimensions. It was developed as an extension of simple parity check methods used in magnetic recording systems and radiation-hardened memory designs. [1]

  8. Resource acquisition is initialization - Wikipedia

    en.wikipedia.org/wiki/Resource_acquisition_is...

    Resource acquisition is initialization (RAII) [1] is a programming idiom [2] used in several object-oriented, statically typed programming languages to describe a particular language behavior. In RAII, holding a resource is a class invariant , and is tied to object lifetime .

  9. Double-checked locking - Wikipedia

    en.wikipedia.org/wiki/Double-checked_locking

    Once var arr [] int // getArr retrieves arr, lazily initializing on first call. Double-checked // locking is implemented with the sync.Once library function. The first // goroutine to win the race to call Do() will initialize the array, while // others will block until Do() has completed.