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我这样做很快，因为应用程序启动，幸运的是我必须在一个名为CMIDataManager的单例类中只做一次，我的应用程序启动时间太长。使用嵌套快速枚举花费时间太长，如何优化？
plist中包含：
Commanders.plist：
德语 - 阵列
苏 - 阵列
每个指挥官阵列具有19指挥官并且每个指挥官5种能力（映射通过独特的能力）。
Abilities.plist：
GermanAbilities - 阵列
SovietAbilities - 阵列
每个阵列包含40种能力与UID（用于映射指挥官能力）
在开始时，我需要创建一个模型类，所以我在每个能力隐藏中迭代指挥官的能力，一旦发现匹配，我将能力模型对象添加到Commaders模型对象。
我该如何做得更快？使用基于块的枚举会加快速度吗？我如何使用它？
-(void)loadCommandersAndAbilities{
#pragma German Abilities iteration
NSString* abilitiesPlistPath = [[NSBundle mainBundle] pathForResource:@"Abilities" ofType:@"plist"];
NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:abilitiesPlistPath];
NSArray *tempArray = [dictionary objectForKey:@"GermanAbilities"];
NSArray *tempArray2 = [dictionary objectForKey:@"SovietAbilities"];
NSMutableArray *tempAbilitiesArray = [[NSMutableArray alloc] initWithCapacity:tempArray.count];
for (NSDictionary *dict in tempArray) {
Ability *ability = [[Ability alloc] init];
[ability populateWithDictionary:dict];
[tempAbilitiesArray addObject:ability];
NSLog(@"Adding object %@ to temp abilities",ability.name);
}
self.germanAbilitiesArray = [NSArray arrayWithArray:tempAbilitiesArray];
[tempAbilitiesArray removeAllObjects];
#pragma Soviet abilities iteration
for (NSDictionary *dict in tempArray2) {
Ability *ability = [[Ability alloc] init];
[ability populateWithDictionary:dict];
[tempAbilitiesArray addObject:ability];
}
self.sovietAbilitiesArray = [NSArray arrayWithArray:tempAbilitiesArray];
#pragma German commander itertation
NSString* commandersPlistPath = [[NSBundle mainBundle] pathForResource:@"Commanders" ofType:@"plist"];
dictionary = [[NSDictionary alloc] initWithContentsOfFile:commandersPlistPath];
tempArray = [dictionary objectForKey:@"German"];
tempArray2 = [dictionary objectForKey:@"Soviet"];
NSLog(@"Temp German commadner array is %@", tempArray);
NSLog(@"Temp Soviet commadner array is %@", tempArray2);
NSMutableArray *tempCommandersArray = [[NSMutableArray alloc] initWithCapacity:tempArray.count];
NSMutableArray *tempCommandersArray2 = [[NSMutableArray alloc] initWithCapacity:tempArray2.count];
for (NSDictionary *dict in tempArray) {
Commander *commander = [[Commander alloc] init];
[commander populateWithDictionary:dict];
for (NSNumber *uid in commander.abilitiesUIDArray) {
NSLog(@"uid %@", uid);
for (Ability *ability in self.germanAbilitiesArray) {
NSLog(@"ability uid is : %@, target uid %@ ",ability.uid, uid);
if ([ability.uid isEqualToNumber: uid]) {
NSLog(@"Adding abilty %@ to commander %@: ",ability.name, commander.name);
[commander.abilitiesArray addObject:ability];
NSLog(@"Current commander abilty array is %@: ",commander.abilitiesArray);
}
}
}
[tempCommandersArray addObject:commander];
}
self.germanCommandersArray = [NSArray arrayWithArray:tempCommandersArray];
NSLog(@"Final german Commaders %@",self.germanCommandersArray);
#pragma Soviet commander itertation
for (NSDictionary *dict in tempArray2) {
Commander *commander = [[Commander alloc] init];
[commander populateWithDictionary:dict];
for (NSNumber *uid in commander.abilitiesUIDArray) {
NSLog(@"uid %@", uid);
for (Ability *ability in self.sovietAbilitiesArray) {
NSLog(@"ability uid is : %@, target uid %@ ",ability.uid, uid);
if ([ability.uid isEqualToNumber: uid]) {
NSLog(@"Adding abilty %@ to commander %@: ",ability.name, commander.name);
[commander.abilitiesArray addObject:ability];
NSLog(@"Current commander abilty array is %@: ",commander.abilitiesArray);
}
}
}
[tempCommandersArray2 addObject:commander];
}
self.sovietCommandersArray = [NSArray arrayWithArray:tempCommandersArray2];
NSLog(@"Final Soviet Commaders %@",self.germanCommandersArray);
}
添加图片：
参见http://stackoverflow.com/questions/4486622/when-to-use-enumerateobjectsusingblock-vs-for – matt
更多有趣的数字在这里，虽然我不知道知道他们是正确的：http：// darkdust。net/writings/objective-c/nsarray-enumeration-performance – matt
你知道99％的代码是花在调用NSLog吗？ – gnasher729