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The earliest way is the hexdraw Perl script, which converts the string into an ASCII art representation to be edited in a text editor. Another method involves generating a bitmap image grid for an entire range of code points and working with an image editor.
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.
It is used in the mapping of some IBM encodings for Korean, such as IBM code page 933, which allows the use of the Shift Out and Shift In characters to shift to a double-byte character set. [5] Since the double-byte character set could contain compatibility jamo, halfwidth variants are needed to provide round-trip compatibility. [6] [7]
Wide: Naturally wide character, e.g. Hiragana. Na Narrow: Naturally narrow character, e.g. ISO Basic Latin alphabet. F Fullwidth: Wide variant with compatibility normalisation to naturally narrow character, e.g. fullwidth Latin script. H Halfwidth: Narrow variant with compatibility normalisation to naturally wide character, e.g. half-width kana.
The hash mark character introduces a comment in Perl, which runs up to the end of the line of code and is ignored by the compiler (except on Windows). The comment used here is of a special kind: it’s called the shebang line.
This includes Perl itself, nearly all publicly released modules, many scripts, most design documents, many articles on Perl.com and other Perl-related web sites, and the Parrot virtual machine. Pod is rarely read in the raw, although it is designed to be readable without the assistance of a formatting tool.
ICANN rules prohibit domain names from containing non-displayed characters, including the zero-width space, and most browsers prohibit their use within domain names because they can be used to create a homograph attack, where a malicious URL is visually indistinguishable from a legitimate one.
Perl. Block comments in Perl are considered part of the documentation, and are given the name Plain Old Documentation (POD). Technically, Perl does not have a convention for including block comments in source code, but POD is routinely used as a workaround. PHP. PHP supports standard C/C++ style comments, but supports Perl style as well. Python