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isAlphaNumberic and isDigit improvement + tests (#6579)

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if we encounter a character that does not satisfy the proc, we return immediately, without continuing to loop over the rest of the chars in the string.
This commit is contained in:
Viktor Marosvary 2017-10-24 10:22:18 +02:00 • committed by Andreas Rumpf
commit ce04288d64
2 changed files with 23 additions and 2 deletions
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6
lib/pure/strutils.nim
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@ -138,7 +138,8 @@ proc isAlphaNumeric*(s: string): bool {.noSideEffect, procvar,
result = true
for c in s:
result = c.isAlphaNumeric() and result
if not c.isAlphaNumeric():
return false
proc isDigit*(s: string): bool {.noSideEffect, procvar,
rtl, extern: "nsuIsDigitStr".}=
@ -153,7 +154,8 @@ proc isDigit*(s: string): bool {.noSideEffect, procvar,
result = true
for c in s:
result = c.isDigit() and result
if not c.isDigit():
return false
proc isSpaceAscii*(s: string): bool {.noSideEffect, procvar,
rtl, extern: "nsuIsSpaceAsciiStr".}=