ios NSLocalizedString() 的第二个参数是什么？
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What is the second parameter of NSLocalizedString()?
提问by 4thSpace
What is the *commentparameter in:
里面的*comment参数是什么：
NSString *NSLocalizedString(NSString *key, NSString *comment)
If I do this:
如果我这样做：
NSLocalizedString(@"Hello_World_Key", @"Hello World")
and have two versions of a Localizable.strings (English and Spanish), does each need the entry:
并且有两个版本的 Localizable.strings（英语和西班牙语），是否每个都需要条目：
English.lproj/Localization.strings: @"Hello_World_Key" = @"Hello World";
Spanish.lproj/Localization.strings: @"Hello_World_Key" = @"Hola Mundo";
Isn't the English one redundant?
英文不是多余的吗？
采纳答案by Alex Reynolds
The comment string is ignored by the application. It is used for a translator's benefit, to add meaning to the contextual usage of the key where it is found in your application.
应用程序将忽略注释字符串。它用于翻译人员的利益，为在您的应用程序中找到的密钥的上下文使用添加含义。
For example, the Hello_World_Keykey may take different values in a given language, depending on how formal or informal the Hello Worldphrase needs to be in that language ("What's up World", "Yo World", "Good Day World", etc.).
例如，Hello_World_Key键在给定的语言中可能采用不同的值，这取决于Hello World短语在该语言中的正式或非正式程度（“What's up World”、“Yo World”、“Good Day World”等）。
You can add a string in the comment field to hint this usage to the translator, who will (one would presume) be better able to localize your application.
您可以在注释字段中添加一个字符串，以向翻译人员暗示这种用法，他们（有人会认为）能够更好地本地化您的应用程序。
回答by Rob Keniger
The second parameter is a comment that will automatically appear in the strings file if you use the genstringscommand-line utility, which can create the strings file for you by scanning your source code.
第二个参数是一个注释，如果您使用genstrings命令行实用程序，它将自动出现在字符串文件中，它可以通过扫描您的源代码为您创建字符串文件。
The comment is useful for your localizers. For example:
该注释对您的本地化人员很有用。例如：
NSLocalizedString(@"Save",@"Title of the Save button in the theme saving dialog");
When you run genstrings, this will produce an entry in the Localizable.strings file like this:
当您运行 genstrings 时，这将在 Localizable.strings 文件中生成一个条目，如下所示：
/* Title of the Save button in the theme saving dialog */
"Save" = "Save";
回答by Shanmugaraja G
It's for just developer understanding on the translation, that is you are giving a key to get corresponding string from the corresponding strings file.
这只是为了开发人员对翻译的理解，即您提供了从相应字符串文件中获取相应字符串的密钥。
The comment parameter enables developer to understand what the key represents...
注释参数使开发人员能够了解密钥代表什么...
