{"url":"https://oinume.hatenablog.com/entry/nil-to-empty-slice-and-map","type":"rich","height":"190","version":"1.0","provider_url":"https://hatena.blog","description":"\u30bf\u30a4\u30c8\u30eb\u306e\u901a\u308a\u3060\u3051\u3069\u77e5\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3002\u660e\u793a\u7684\u306b\u7a7a\u306eslice\u3084map\u3092\u4f5c\u3089\u306a\u304f\u3066\u3082\u3044\u3044\u306e\u306f\u697d\u3060\u3002 http://play.golang.org/p/veOWHGDdcn package main import \"fmt\" func emptyMap() map[string]string { return nil } func emptySlice() []string { return nil } func main() { emptySlice := emptySlice() fmt.Printf(\"slice len = %d\\n\", len(emptySlice)) emptyMap \u2026","author_url":"https://blog.hatena.ne.jp/oinume/","author_name":"oinume","published":"2014-09-15 02:58:25","categories":["Go"],"blog_url":"https://oinume.hatenablog.com/","title":"Go\u3067nil\u306aslice\u3084map\u3092\u8fd4\u3059\u3068\u7a7a\u306eslice\u3084map\u306b\u306a\u308b","provider_name":"Hatena Blog","width":"100%","image_url":"http://ecx.images-amazon.com/images/I/51ZzoXpsmqL.jpg","blog_title":"oinume journal","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Foinume.hatenablog.com%2Fentry%2Fnil-to-empty-slice-and-map\" title=\"Go\u3067nil\u306aslice\u3084map\u3092\u8fd4\u3059\u3068\u7a7a\u306eslice\u3084map\u306b\u306a\u308b - oinume journal\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}