method

to_h

v2_5_5 - Show latest stable - 0 notes - Class: Array

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to_h() public

Returns the result of interpreting ary as an array of [key, value] pairs.

[[:foo, :bar], [1, 2]].to_h
  # => {:foo => :bar, 1 => 2}

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static VALUE
rb_ary_to_h(VALUE ary)
{
    long i;
    VALUE hash = rb_hash_new_with_size(RARRAY_LEN(ary));
    for (i=0; i<RARRAY_LEN(ary); i++) {
        const VALUE elt = rb_ary_elt(ary, i);
        const VALUE key_value_pair = rb_check_array_type(elt);
        if (NIL_P(key_value_pair)) {
            rb_raise(rb_eTypeError, "wrong element type %"PRIsVALUE" at %ld (expected array)",
                     rb_obj_class(elt), i);
        }
        if (RARRAY_LEN(key_value_pair) != 2) {
            rb_raise(rb_eArgError, "wrong array length at %ld (expected 2, was %ld)",
                i, RARRAY_LEN(key_value_pair));
        }
        rb_hash_aset(hash, RARRAY_AREF(key_value_pair, 0), RARRAY_AREF(key_value_pair, 1));
    }
    return hash;
}

to_h

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