返回类型为"NSComparaisonResult"； XCode更新后 [英] Return type "NSComparaisonResult" after the XCode update

问题描述

我有一个与此处概述的问题类似的问题: xcode 4.5是否更改了sortedArrayUsingComparator +块?

I have a problem similar to the one outlined here: Has xcode 4.5 changed sortedArrayUsingComparator + blocks?

int index = [AAjouter indexOfObject:match inSortedRange:NSMakeRange(0, [AAjouter count]) options:NSBinarySearchingInsertionIndex usingComparator:^(id obj1, id obj2) {


Match *match1 = (Match *) obj1;
Match *match2 = (Match *) obj2;

if ([match1.matchDate isEqualToDate:match2.matchDate]) {
    if ([match1.paysCompetition isEqualToString:match2.paysCompetition]) {
        if ([[NSNumber numberWithInt:match1.ordreCompetition] isEqualToNumber:[NSNumber numberWithInt:match2.ordreCompetition]]) {
            if ([match1.equipeANom isEqualToString:match2.equipeANom]) {
                return NSOrderedSame;
            }
            else {
                return [match1.equipeANom compare:match2.equipeANom];
            }
        }
        else {
            return [[NSNumber numberWithInt:match1.ordreCompetition] compare:[NSNumber numberWithInt:match2.ordreCompetition]]; 
        }
    }
    else {
        return [match1.paysCompetition compare:match2.paysCompetition]; 
    }
} 
else {
    return [match1.matchDate compare:match2.matchDate];
}

}];

[AAjouter insertObject:match atIndex:index]； 休息;

[AAjouter insertObject:match atIndex:index]; break;

我收到此错误消息:

返回类型'NSComparaisonResult'(aka'NSComparaisonResult')必须 匹配先前的返回类型'NSIntger'(aka'int')"

"Return type 'NSComparaisonResult' (aka 'NSComparaisonResult') must match previous return type 'NSIntger' (aka 'int')"

每行代码后:

return [[NSNumber numberWithInt:match1.ordreCompetition] compare:[NSNumber numberWithInt:match2.ordreCompetition]]; 
return [match1.paysCompetition compare:match2.paysCompetition]; 
return [match1.matchDate compare:match2.matchDate];

你有个主意吗?

推荐答案

明确指定返回类型:

^NSComparisonResult(id obj1, id obj2) { ...

编译器通常会推断出该块的返回类型，但在某些情况下，可能会感到困惑.我怀疑这可能与返回枚举NSOrderedSame有关，在较早版本的编译器中，该枚举类型为int.

The compiler usually infers the return type of the block, but in some cases, it can get confused. I suspect it might have to do with returning the enum NSOrderedSame, which, on older versions of the compiler, would be type int.

这篇关于返回类型为"NSComparaisonResult"； XCode更新后的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！