When one operand is a regular expression and the other is a string then the regular expression is used as a pattern to match against the string.
Ruby regular expression not match.
The next column legend explains what the element means or encodes in the regex syntax.
Think about an email address with a ruby regex you can define what a valid email address looks like.
A regular expression literal is a pattern between slashes or between arbitrary delimiters followed by r as follows.
Regular expression to given a list of strings words or other characters only return the strings that do not match.
Other classes may have different.
I case insensitive m make dot match newlines x ignore whitespace in regex o perform substitutions only once.
It s a handy way to test regular expressions as you write them.
Rubular is a ruby based regular expression editor.
Syntax pattern pattern im option can be specified r usr local.
To start enter a regular expression and a test string.
A regular expression is a special sequence of characters that helps you match or find other strings or sets of strings using a specialized syntax held in a pattern.
Is ruby s basic pattern matching operator.
The next two columns work hand in hand.
The example column gives a valid regular expression that uses the element and the sample match column presents a text string that could be matched by the regular expression.
General delimited regular expression.