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NSDictionarys获取特定数据字段我有一个嵌套的词典数据数组是这样的:从嵌套在NSArray中
[{ link : [
{ $ref: "foo", $href: "first_foo"},
{ $ref: "bar", $href: "barrrrrrr"},
{ $ref: "quz", $href: "quzzzzzzz"}]},
{ link : [
{ $ref: "foo", $href: "second_foo"},
{ $ref: "bar", $href: "barrrrrrr"},
{ $ref: "quz", $href: "quzzzzzzz"}]}]
我想挑出每个字典的foo
。像这样的希望的结果:
[{ foo: "first_foo"}, { foo: "second_foo"}]
我使用[myArray valueForKey @"@customFilterForFoo"]
尝试,以及有关的NSDictionary类实现的customFilterForFoo
,但最终与*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<__NSCFArray 0x6b81a10> valueForUndefinedKey:]: this class is not key value coding-compliant for the key customFilterForFoo.'
我怎么能这样做?谢谢!
您是否设法使其工作? – moxy 2012-02-19 21:01:24
我已经采用了你的方法,虽然它确实不那么简洁。 – 2012-02-20 04:54:38