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Ingy döt Net 2013-04-11 01:07:29 -07:00
parent b83f433714
commit 68f8f3e56b
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Task/Substring/Smalltalk/substring-2.st Normal file
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String extend [
copyFrom: index length: nChar [
^ self copyFrom: index to: ( index + nChar - 1 )
]
copyFromRegex: regEx length: nChar [
|i|
i := self indexOfRegex: regEx.
^ self copyFrom: (i first) length: nChar
]
].
"and show it simpler..."
(s copyFrom: 13 length: 5) displayNl.
(s copyFromRegex: 'w' length: 5) displayNl.
(s copyFromRegex: 'ro' length: 3) displayNl.