How to check WHOLE string for regular expression in ruby?

Question

Like a regex string so that it returns true if the string integer matches (and not a substring)?

eg:

test( \ee\ , "street" ) #=> returns false test( \ee\ , "ee" ) #=> returns true! 

Thank.

Answer 1

You can combine the beginning of a line with \A and the end with \Z In ruby ​​^ and $ beginning and end of the line also correspond:

 >> "a\na" =~ /^a$/ => 0 >> "a\na" =~ /\Aa\Z/ => nil >> "a\na" =~ /\Aa\na\Z/ => 0 

Answer 2

This seems to work for me, although it looks ugly (perhaps in a more attractive way, this can be done):

 !(string =~ /^ee$/).nil? 

Of course, everything inside // above can be any regular expression you want.

Example:

 >> string = "street" => "street" >> !(string =~ /^ee$/).nil? => false >> string = "ee" => "ee" >> !(string =~ /^ee$/).nil? => true 

Note. Tested in Rails console with ruby ​​(1.8.7) and rails (3.1.1)

Answer 3

So what are you asking, how to check if two strings are equal, right? Just use string equality! This goes through each of the examples quoted by you and Thomas:

 'ee' == 'street' # => false 'ee' == 'ee' # => true "a\na" == 'a' # => false "a\na" == "a\na" # => true