Welcome › Forums › General PowerShell Q&A › Regular Expressions for begineers
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Totally bemused by regular expressions
i.e. "book" -match 'i?' ...what is the point ??
The PowerShell help says of '?'...... "Matches one instance of the preceding character."
But the above example returns a "True"
I must be missing something !!
The question mark quantifier makes the preceding token optional in your example the i. You could write "book" -match " to get the same result.
Check out http://www.regular-expressions.info/optional.html for more examples on the question mark quantifier.
I get it now.
The examples given in the MS Powershell online help do not always give particularly good example of regex from a beginners perspective.
Mind you, even the online help is a great deal better than some manuals I could mention !
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