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Make callbacks of download more readable

This commit is contained in:
zhongwuzw 2018-08-10 22:53:13 +08:00
parent 65f72743cc
commit 30d077b0a6
1 changed files with 3 additions and 8 deletions
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11
SDWebImage/SDWebImageDownloaderOperation.m
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@ -105,15 +105,10 @@ typedef NSMutableDictionary<NSString *, id> SDCallbacksDictionary;
- (nullable NSArray<id> *)callbacksForKey:(NSString *)key {
LOCK(self.callbacksLock);
NSArray<SDCallbacksDictionary *> *callbackBlocks = [self.callbackBlocks copy];
NSMutableArray<id> *callbacks = [[self.callbackBlocks valueForKey:key] mutableCopy];
UNLOCK(self.callbacksLock);
NSMutableArray<id> *callbacks = [NSMutableArray arrayWithCapacity:callbackBlocks.count];
for (SDCallbacksDictionary *callbacksDic in callbackBlocks) {
id callback = callbacksDic[key];
if (callback) {
[callbacks addObject:callback];
}
}
// We need to remove [NSNull null] because there might not always be a progress block for each callback
[callbacks removeObjectIdenticalTo:[NSNull null]];
return [callbacks copy]; // strip mutability here
}