我想对这个数组进行排序。在标题子字典的 _content 字段中按字母升序排列。
$1 = 0x0a2654c0 <__NSArrayM 0xa2654c0>(
{
"can_comment" = 0;
"count_comments" = 0;
"count_views" = 0;
"date_create" = 1382375149;
"date_update" = 1382375192;
description = {
"_content" = "";
};
farm = 4;
id = 72157636802321975;
"needs_interstitial" = 0;
photos = 3;
primary = 10406280064;
secret = 9731b9f97a;
server = 3767;
title = {
"_content" = Outdoors;
};
videos = 0;
"visibility_can_see_set" = 1;
},
{
"can_comment" = 0;
"count_comments" = 0;
"count_views" = 0;
"date_create" = 1382374546;
"date_update" = 1382374548;
description = {
"_content" = "";
};
farm = 8;
id = 72157636801994055;
"needs_interstitial" = 0;
photos = 10;
primary = 10406216685;
secret = 484f085b6d;
server = 7420;
title = {
"_content" = Cuba;
};
videos = 0;
"visibility_can_see_set" = 1;
},
{
"can_comment" = 0;
"count_comments" = 0;
"count_views" = 0;
"date_create" = 1382374276;
"date_update" = 1382374279;
description = {
"_content" = "";
};
farm = 3;
id = 72157636802362284;
"needs_interstitial" = 0;
photos = 6;
primary = 10406175565;
secret = f063b11d3e;
server = 2839;
title = {
"_content" = Afghanistan;
};
videos = 0;
"visibility_can_see_set" = 1;
},
.....
there are more than 50 element