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char.rs: Added a function cmp

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David Rajchenbach-Teller 2011-11-04 14:33:11 +01:00 committed by Brian Anderson
parent 07ffe68ad9
commit 07574363ef
1 changed files with 8 additions and 0 deletions
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8
src/lib/char.rs
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@ -94,6 +94,7 @@
} else if c == ch_no_break_space { true } else { false }
}
pure fn to_digit(c: char) -> u8 {
alt c {
'0' to '9' { c as u8 - ('0' as u8) }
@ -102,3 +103,10 @@
_ { fail; }
}
}
fn cmp(a: char, b: char) -> int {
ret if b > a { -1 }
else if b < a { 1 }
else { 0 }
}