method

index

v3.2.13 - Show latest stable - Class: ActiveSupport::Multibyte::Chars

index(needle, offset=0)

public

Returns the position needle in the string, counting in codepoints. Returns nil if needle isn’t found.

Example:

'CafÃ© pÃ©riferÃ´l'.mb_chars.index('Ã´')   # => 12
'CafÃ© pÃ©riferÃ´l'.mb_chars.index(/\w/u) # => 0

# File activesupport/lib/active_support/multibyte/chars.rb, line 149
        def index(needle, offset=0)
          wrapped_offset = first(offset).wrapped_string.length
          index = @wrapped_string.index(needle, wrapped_offset)
          index ? (Unicode.u_unpack(@wrapped_string.slice(0...index)).size) : nil
        end

index

Related methods