I am learning about regular expressions and don't know how to write a regular expression for selecting a whole string which can consist of any character.
For example string like " Happy coding_programming with-C"
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Could you provide some *examples*, both *positive* and *negative* cases? – Dmitry Bychenko Feb 14 '17 at 13:22
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show the input and expected output – RomanPerekhrest Feb 14 '17 at 13:22
2 Answers
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Such a regex could look like:
.*
"." accepts any character (as comments suggest: the meaning of "." might be different; depending on the actual regex implementation you are looking at; but most often, "any character" boils down to "." )
"*" accepts that 0 to n times
GhostCat
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`.` is not always *any* character, it depends on the regex flavor. – Wiktor Stribiżew Feb 14 '17 at 13:23
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.*
. is any character
* is 0 or more times
TolMera
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1`.` is not always *any* character, it depends on the regex flavor. – Wiktor Stribiżew Feb 14 '17 at 13:23
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There is no "standard flavor" in the regex world. There are many different flavors. – Wiktor Stribiżew Feb 14 '17 at 13:25
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For the OP, if in doubt, look up PERL Regexp, as it is generally the standard flavor used or check out this link http://www.regular-expressions.info/posix.html – TolMera Feb 14 '17 at 13:28