End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

MatchData#size

mtch.size → integer

static VALUE
match_size(VALUE match)
{
    match_check(match);
    return INT2FIX(RMATCH_REGS(match)->num_regs);
}

Returns the number of elements in the match array.

Example

m = /(.)(.)(\d+)(\d)/.match("THX1138.")
m.length   #=> 5
m.size     #=> 5

See also #regexp #string #pre_match #to_a also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0