I want to match a string that includes the characters 0-9.-,[], something like this:
return true if str =~ /\A[0-9.-,\[\]]*\Z/
Which works except it doesn't seem to match the braces, how do I match those?
views:
88answers:
2
+7
A:
You need to escape the . and - characters:
str =~ /\A[0-9\.\-,\[\]]*\Z/
Michael Sepcot
2009-09-23 00:56:13
This will also match an empty string. Change `*` to `+` to make sure the string has at least one character in the set.
Michael Sepcot
2009-09-23 00:58:52
"." is not special inside [brackets].
glenn jackman
2009-09-23 01:55:10
+3
A:
turns out it also works w/o escaping the . and - characters like this:
str =~ /\A[\[\]0-9.,-]*\Z/
aaronstacy
2009-09-23 01:16:52
Inside a set using square brackets, dot (.) is no longer special. However, dash (-) is unless it is the last character in the set.
tadman
2009-09-23 14:19:20