method
join
v2_5_5 -
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- Class:
Array
join(p1 = v1)public
Returns a string created by converting each element of the array to a string, separated by the given separator. If the separator is nil, it uses current ,ドル. If both the separator and ,ドル are nil, it uses an empty string.
[ "a", "b", "c" ].join #=> "abc" [ "a", "b", "c" ].join ("-") #=> "a-b-c"
For nested arrays, join is applied recursively:
[ "a", [1, 2, [:x, :y]], "b" ].join ("-") #=> "a-1-2-x-y-b"
static VALUE
rb_ary_join_m(int argc, VALUE *argv, VALUE ary)
{
VALUE sep;
rb_scan_args(argc, argv, "01", &sep);
if (NIL_P(sep)) sep = rb_output_fs;
return rb_ary_join(ary, sep);
}