slice

slice(src, pattern, n = 0)

Class Public methods

EXPERIMENTAL

Parses src and return a string which was matched to pattern. pattern should be described as Regexp.

require 'ripper'

p Ripper.slice('def m(a) nil end', 'ident')                   #=> "m"
p Ripper.slice('def m(a) nil end', '[ident lparen rparen]+')  #=> "m(a)"
p Ripper.slice("<<EOS\nstring\nEOS",
               'heredoc_beg nl $(tstring_content*) heredoc_end', 1)
    #=> "string\n"

Links:

https://github.com/ruby/ruby/blob/099f6676a1f896b1ab0eda1ba9cf3534952fe7d0/ext/ripper/lib/ripper/lexer.rb#L84

doc_ruby_on_rails

2015-05-08 13:59:19

Comments

Popular Articles

slice! ary.slice!(index) â obj or nilary.slice!(start, length) â new_ary or nilary.slice!(range) â new_ary or nil Instance Public

slice class slice(stop) class slice(start, stop[, step]) Return a slice object representing the set of indices specified by range(start, stop, step). The

slice slice(*methods) Instance Public methods Returns a hash of the given methods with their names as keys and returned values as values.

slice! slice!(*keys) Instance Public methods Replaces the hash with only the given keys. Returns a hash containing the removed key/value pairs.

slice slice(*keys) Instance Public methods Returns a new ActionController::Parameters instance that includes only the given keys. If the given