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Array#first to treat 1 argument case specially to improve performance.

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Yukihiro "Matz" Matsumoto
2017-08-25 16:04:32 +09:00
parent 1b545a6b63
commit cec53ff77e
1 changed files with 2 additions and 1 deletions
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src/array.c
+2 -1
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@@ -931,9 +931,10 @@ mrb_ary_first(mrb_state *mrb, mrb_value self)
struct RArray *a = mrb_ary_ptr(self);
mrb_int size, alen = ARY_LEN(a);
if (mrb_get_args(mrb, "|i", &size) == 0) {
if (mrb->c->ci->argc == 0) {
return (alen > 0)? ARY_PTR(a)[0]: mrb_nil_value();
}
mrb_get_args(mrb, "|i", &size);
if (size < 0) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "negative array size");
}