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A command prompt with Korean localisation, showing halfwidth and fullwidth characters. In CJK (Chinese, Japanese, and Korean) computing, graphic characters are traditionally classed into fullwidth [a] and halfwidth [b] characters. Unlike monospaced fonts, a halfwidth character occupies half the width of a fullwidth character, hence the name.
The documentation is bundled with Perl in its own format, known as Plain Old Documentation (pod). Some distributions, such as Strawberry Perl, include the documentation in HTML, PDF, and pod formats. perldoc is also the name of the Perl command that provides "access to all the documentation that comes with Perl", from the command line.
A wide character refers to the size of the datatype in memory. It does not state how each value in a character set is defined. Those values are instead defined using character sets, with UCS and Unicode simply being two common character sets that encode more characters than an 8-bit wide numeric value (255 total) would allow.
(Note that, on Microsoft Windows systems, Perl programs are typically invoked by associating the .pl extension with the Perl interpreter. In order to deal with such circumstances, perl detects the shebang line and parses it for switches. [4]) The second line in the canonical form includes a semicolon, which is used to separate statements in Perl.
Whitespace defines a command as a sequences of whitespace characters. For example, [Tab][Space][Space][Space] performs arithmetic addition of the top two elements on the stack. A command is written as an instruction modification parameter (IMP) followed by an operation and then any parameters. [1] IMP sequences include:
here doc with <<-a single space character (i.e. 0x20 ) is at the beginning of this line this line begins with a single tab character i.e 0x09 as does the next line the intended end was before this line and these were not processed by tr +++++ here doc with << a single space character (i.e. 0x20 ) is at the beginning of this line this line ...
The following code fragment depicts the process flow of a system administration script (Windows script file). Although a section marking the code appears as a comment, the diagram is in an XML CDATA section, which is technically not a comment, but serves the same purpose here. [19]
In C and C++ short, long, and long long types are required to be at least 16, 32, and 64 bits wide, respectively, but can be more. The int type is required to be at least as wide as short and at most as wide as long , and is typically the width of the word size on the processor of the machine (i.e. on a 32-bit machine it is often 32 bits wide ...