ruby match word in string
text = "A regular expression is a sequence of characters that define a search pattern."
puts 'Found "A" at the beginning of the string.' if text.match(/^A/)
puts 'Found "O" at the beginning of the string.' if text.match(/^O/)
puts 'Found the string "character".' if text.match(/character/)
puts 'Found the word "character".' if text.match(/characterb/)ruby is character
#Use a regular expression that matches letters & digits:
def letter?(lookAhead)
lookAhead.match?(/[[:alpha:]]/)
end
def numeric?(lookAhead)
lookAhead.match?(/[[:digit:]]/)
end
#These are called POSIX bracket expressions, and the advantage of them is
#that unicode characters under the given category will match. For example:
'ñ'.match?(/[A-Za-z]/) #=> false
'ñ'.match?(/w/) #=> false
'ñ'.match?(/[[:alpha:]]/) #=> true
#You can read more in Ruby’s docs for regular expressions.
#https://ruby-doc.org/core/Regexp.htmlCopyright © 2021 Codeinu
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