Changes between Version 12 and Version 13 of WikiStart


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Timestamp:
Jul 5, 2010, 3:39:29 AM (10 years ago)
Author:
vadim.godunko
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  • WikiStart

    v12 v13  
    33Matreshka is a set of Ada libraries to develop information systems. Now it includes two libraries - first provides support for localization, internationalization and globalization; and second includes XML processor. They includes:
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    5  - handling of string in unbounded form using Unicode representation and algorithms. Universal_Strings utilize implicit sharing (also known as copy-on-write) technology, thus have constant time of copy operation. It is safe to use them in multitasking programs until each object accessed by only one task in one moment. Elements of Universal_String can be accessed directly by index or using cursors. Two forms of cursors are available now: characters cursor - iterate string character by character, and grapheme clusters cursor - iterate string as sequences of characters forms visible character. Unicode normalization, case conversions, case folding and collation are also supported.
     5 - support for unbounded form of string of full range of Unicode characters including Unicode algorithms such as normalization, case conversion and case folding, collation. Universal_Strings utilize implicit sharing (also known as copy-on-write) technology, thus have constant time of copy operation. It is safe to use them in multitasking programs until each object accessed by only one task in one moment. Elements of Universal_String can be accessed directly by index or using cursors. Two forms of cursors are available now: characters cursor - iterate string character by character, and grapheme clusters cursor - iterate string as sequences of characters forms visible character.
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    77 - regular expression engine. It uses Perl-style syntax with Unicode extensions. Non-backtracking virtual machine guarantee that regular expression searches run in time linear in the size of the input.