最近在读苹果的文档，Programming with Objective-C，看到Conventions这节里面写到：
If a method includes an error pointer parameter to be set if an error occurred, this should be the last parameter to the method. If a method takes a block, the block parameter should be the last parameter in order to make any method invocations as readable as possible when specifying a block inline.
想问一下如果一个method同时具有error 和 block类型的参数，哪个应该应该放在最后一个？
If a method includes an error pointer parameter to be set if an error occurred, this should be the last parameter to the method. If a method takes a block, the block parameter should be the last parameter in order to make any method invocations as readable as possible when specifying a block inline.
想问一下如果一个method同时具有error 和 block类型的参数，哪个应该应该放在最后一个？
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