翻訳と辞書
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・ user-obsequious
・ user-unctuous
・ usg unix
・ usim
・ usl
・ usp
・ usr
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・ utc
・ utf
・ utf-8
・ utility
・ utility program
・ utility software
・ utility-coder
・ utopist
・ utp
・ utrc
・ utsl
・ uucp


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UTF-8 : FOLDOC
UTF-8
(UCS transformation format 8) An ASCII-compatible multibyte Unicode and UCS encoding, used by Java and Plan 9.
The {Unicode character} set occupies a 16-bit code space. The most obvious Unicode encoding (known as UCS-2) consists of a sequence of 16-bit words. Such strings can contain bytes like '0' or '/' which have a special meaning in filenames and other C library function parameters. In addition, the majority of Unix tools expects ASCII files and can't read 16-bit words as characters without major modifications. For these reasons, UCS-2 is not a suitable external encoding of Unicode in filenames, text files, environment variables, etc.
The
ISO 10646 Universal Character Set (UCS), a superset of Unicode, occupies a 31-bit code space and the obvious UCS-4 encoding for it (a sequence of 32-bit words) has the same problems.
The UTF-8 encoding of Unicode and UCS avoids the problems of fixed-length Unicode encodings because an ASCII f
Universal Character Set (UCS), a superset of Unicode, occupies a 31-bit code space and the obvious UCS-4 encoding for it (a sequence of 32-bit words) has the same problems.
The UTF-8 encoding of Unicode and UCS avoids the problems of fixed-length Unicode encodings because an ASCII f


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