Since "id" is a keyword in Objective-C what alternative name do you use for ID variable (e.g. PK field)?
由于“id”是Objective-C中的关键字，您对ID变量使用什么替代名称（例如PK字段）？
6 个解决方案
#1
18
I think it should be noted that the compiler can distinguish between id in the type specifier position and id in the variable name position. That is,
我认为应该注意，编译器可以区分类型说明符位置中的id和变量名称位置中的id。那是，
NSUInteger id;
id = 10;
will compile just fine (as, indeed, will id id; id = [NSNumber numberWithInt:10];). (You could also uppercase it: ID.) That said, those are all horrible ideas. Don't use them. Forget I even said that.
将编译得很好（实际上，将id id; id = [NSNumber numberWithInt：10];）。 （你也可以大写它：ID。）那就是说，这些都是可怕的想法。不要使用它们。忘了我甚至说过。
The style in Cocoa programming is to tend towards verbosity, so (as all the earlier answers have suggested) the best practice is probably to write it all out: identifier or dinglehopferID.
Cocoa编程中的风格倾向于冗长，因此（正如所有早期的答案所暗示的那样）最佳实践可能是全部写出来：标识符或dinglehopferID。
#2
3
identifier, or something more specific like userID.
标识符，或更具体的内容，如userID。
#3
0
It often depends on context. Simply, identifier if I'm not feeling particularly creative.
它通常取决于背景。简单地说，标识符，如果我感觉不是特别有创意。
#4
0
I tend to use either 'identifier' — if there's really no better alternative — or something domain specific like 'programmeID' which sort of says 'this is the primary key, but only with respect to this domain'.
我倾向于使用“标识符” - 如果真的没有更好的替代方案 - 或某些特定于域名的“programmeID”，它们会说'这是主键，但仅限于此域'。
It's actually quite rare that you have to think in terms of primary keys within Cocoa. Core Data preserves object graphs without any nomination of primary keys, NSPredicates don't give inherently any additional weight to a field that happens to be unique per object and NSDictionarys tend to be built in an adhoc fashion.
实际上很少有人必须考虑Cocoa中的主键。 Core Data保留了没有任何主键提名的对象图，NSPredicates不会给每个对象恰好是唯一的字段赋予任何额外的权重，并且NSDictionarys倾向于以一种特殊的方式构建。
#5
0
I almost use 'guid' NSString *guid NSNumber *guid.
我几乎使用'guid'NSString * guid NSNumber * guid。
http://en.wikipedia.org/wiki/Globally_unique_identifier
http://en.wikipedia.org/wiki/Globally_unique_identifier
#6
0
Using id is a bad idea for me. I almost use 'uid' or 'cid' for Users and Clients respectively. I use the first letter of the model name to avoid the reserved word.
使用id对我来说是一个坏主意。我几乎分别对用户和客户使用'uid'或'cid'。我使用模型名称的第一个字母来避免保留字。
#1
18
I think it should be noted that the compiler can distinguish between id in the type specifier position and id in the variable name position. That is,
我认为应该注意，编译器可以区分类型说明符位置中的id和变量名称位置中的id。那是，
NSUInteger id;
id = 10;
will compile just fine (as, indeed, will id id; id = [NSNumber numberWithInt:10];). (You could also uppercase it: ID.) That said, those are all horrible ideas. Don't use them. Forget I even said that.
将编译得很好（实际上，将id id; id = [NSNumber numberWithInt：10];）。 （你也可以大写它：ID。）那就是说，这些都是可怕的想法。不要使用它们。忘了我甚至说过。
The style in Cocoa programming is to tend towards verbosity, so (as all the earlier answers have suggested) the best practice is probably to write it all out: identifier or dinglehopferID.
Cocoa编程中的风格倾向于冗长，因此（正如所有早期的答案所暗示的那样）最佳实践可能是全部写出来：标识符或dinglehopferID。
#2
3
identifier, or something more specific like userID.
标识符，或更具体的内容，如userID。
#3
0
It often depends on context. Simply, identifier if I'm not feeling particularly creative.
它通常取决于背景。简单地说，标识符，如果我感觉不是特别有创意。
#4
0
I tend to use either 'identifier' — if there's really no better alternative — or something domain specific like 'programmeID' which sort of says 'this is the primary key, but only with respect to this domain'.
我倾向于使用“标识符” - 如果真的没有更好的替代方案 - 或某些特定于域名的“programmeID”，它们会说'这是主键，但仅限于此域'。
It's actually quite rare that you have to think in terms of primary keys within Cocoa. Core Data preserves object graphs without any nomination of primary keys, NSPredicates don't give inherently any additional weight to a field that happens to be unique per object and NSDictionarys tend to be built in an adhoc fashion.
实际上很少有人必须考虑Cocoa中的主键。 Core Data保留了没有任何主键提名的对象图，NSPredicates不会给每个对象恰好是唯一的字段赋予任何额外的权重，并且NSDictionarys倾向于以一种特殊的方式构建。
#5
0
I almost use 'guid' NSString *guid NSNumber *guid.
我几乎使用'guid'NSString * guid NSNumber * guid。
http://en.wikipedia.org/wiki/Globally_unique_identifier
http://en.wikipedia.org/wiki/Globally_unique_identifier
#6
0
Using id is a bad idea for me. I almost use 'uid' or 'cid' for Users and Clients respectively. I use the first letter of the model name to avoid the reserved word.
使用id对我来说是一个坏主意。我几乎分别对用户和客户使用'uid'或'cid'。我使用模型名称的第一个字母来避免保留字。