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Checking to see whether a String contains a particular substring

 
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How does one determine whether a String object contains a certain substring? The regionMatches functions won't do it. I need something that determines whether a given string contains a substring without regard for what the substring start and end indices are.
 
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Originally posted by Richard Robbins:
How does one determine whether a String object contains a certain substring? The regionMatches functions won't do it. I need something that determines whether a given string contains a substring without regard for what the substring start and end indices are.


How about:
stringOne.indexOf(stringTwo) >= 0
 
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