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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
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14
Task/Substring/Smalltalk/substring-1.st Normal file
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@ -0,0 +1,14 @@
|s|
s := 'hello world shortest program'.
(s copyFrom: 13 to: (13+4)) displayNl.
"4 is the length (5) - 1, since we need the index of the
last char we want, which is included"
(s copyFrom: 7) displayNl.
(s allButLast) displayNl.
(s copyFrom: ((s indexOfRegex: 'w') first)
to: ( ((s indexOfRegex: 'w') first) + 4) ) displayNl.
(s copyFrom: ((s indexOfRegex: 'ro') first)
to: ( ((s indexOfRegex: 'ro') first) + 2) ) displayNl.

16
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.