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| A array is wrapper class that provide STL-like interface to standard fixed-size C-arrays. It also overcome several limitations of standard array. | |||
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| == Creation History == | |||
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| In his book, ''Generic Programming and the STL'', Matthew H. Austern introduces a wrapper class for ordinary arrays with static size, called <tt>block</tt>. It is safer and has no worse performance than ordinary arrays. In ''The C++ Programming Language, 3rd edition'', ] introduces a similar class, called <tt>c_array</tt>, which Nicolai Josuttis present slightly modified in his book ''The C++ Standard Library - A Tutorial and Reference'', called <tt>carray</tt>. | |||
| Nicolai Josuttis introduced it under the name <tt>array</tt> in ] libraries. Later this class was introduced in C++ standard library in ]. | |||
| == Motivation == | |||
| Standard C arrays has several principal limitation: | |||
| * They aren't ]s. They can not be copied like any others objects. | |||
| * They do not obey standard <tt>operator &</tt> semantics. | |||
| And several minor drawbacks: | |||
| * They do not provide STL-like interface. | |||
| * They do not made bound-checks even in debug builds. | |||
| * They have weird syntax. | |||
| The second item means that in the following code | |||
| <source lang="cpp"> | |||
| int a; | |||
| int * b1 = a; | |||
| int * b2 = &a; | |||
| </source> | |||
| <tt>b1</tt> and <tt>b2</tt> receives the same value. That is impossible for object of any others standard types. | |||
| == Links == | |||
| * | |||
| * | |||
Latest revision as of 11:58, 17 October 2021
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