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.html

Source: stackoverflow.com

Similar codes

1 vote227 views1 answer
Ruby if in one line
Ruby
1 vote210 views1 answer
Rails get source method
Ruby
0 vote201 views1 answer
How to push different branch to heroku
Ruby
0 vote191 views1 answer
Rails content_tag nested
Ruby
0 vote243 views1 answer
Remove order by from query in rails
Ruby
0 vote196 views1 answer
Cant find user without id error in rails
Ruby
5 votes219 views1 answer
See all rails routes in browser
Ruby
3 votes218 views1 answer
Exit program ruby
Ruby
0 vote202 views1 answer
Send email rails c one line
Ruby
0 vote193 views1 answer
Concatenate arrays in ruby
Ruby