String search: Difference between revisions
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=== Problem === |
=== Problem === |
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Search a sub |
Search a sub-string in some String. |
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=== Solution === |
=== Solution === |
Latest revision as of 19:59, 12 May 2025
Problem
Search a sub-string in some String.
Solution
Use the String>>findString:
methods variations:
findString: subString
: Answers the index ofsubString
within the receiver, starting at start. If the receiver does not containsubString
, answers 0.findString: subString startingAt: anIndex
: Same asfindString
, but starting at index.findString: subString startingAt: anIndex caseSensitive: aBoolean
: case sensitive version.
For example:
'foobarbaz' findString: 'foo'. "=> 1"
'foobarbaz' findString: 'bar'. "=> 4"
'foobarbaz' findString: 'baz'. "=> 7"
And returns 0 if substring is not found:
'foobarbaz' findString: 'hello' "=> 0"