core: added char::is_digit (matching Nd, Nl, No)
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1 changed files with 19 additions and 1 deletions
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@ -85,10 +85,18 @@ pure fn is_alphanumeric(c: char) -> bool {
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unicode::general_category::No(c);
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unicode::general_category::No(c);
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}
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}
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#[doc( brief = "Indicates whether the character is an ASCII character" )]
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pure fn is_ascii(c: char) -> bool {
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pure fn is_ascii(c: char) -> bool {
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c - ('\x7F' & c) == '\x00'
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c - ('\x7F' & c) == '\x00'
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}
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}
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#[doc( brief = "Indicates whether the character is numeric (Nd, Nl, or No)" )]
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pure fn is_digit(c: char) -> bool {
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ret unicode::general_category::Nd(c) ||
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unicode::general_category::Nl(c) ||
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unicode::general_category::No(c);
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}
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#[doc(
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#[doc(
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brief = "Convert a char to the corresponding digit. \
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brief = "Convert a char to the corresponding digit. \
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Safety note: This function fails if `c` is not a valid char",
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Safety note: This function fails if `c` is not a valid char",
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@ -227,8 +235,18 @@ fn test_to_upper() {
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}
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}
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#[test]
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#[test]
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fn test_ascii() unsafe {
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fn test_is_ascii() unsafe {
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assert str::all("banana", char::is_ascii);
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assert str::all("banana", char::is_ascii);
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assert ! str::all("ประเทศไทย中华Việt Nam", char::is_ascii);
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assert ! str::all("ประเทศไทย中华Việt Nam", char::is_ascii);
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}
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}
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#[test]
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fn test_is_digit() {
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assert is_digit('2');
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assert is_digit('7');
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assert ! is_digit('c');
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assert ! is_digit('i');
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assert ! is_digit('z');
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assert ! is_digit('Q');
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}
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