objective-c - 如何在 Swift 中使用带有关键字名称的 Objective-C 类

Question

我们正尝试在我们的 Swift 项目中使用 BZObjectStore 库 ( https://github.com/expensivegasprices/BZObjectStore )。

但是在这个库中，他们使用'where'作为名称来设置查询条件。

BZObjectStoreConditionModel *fetchCondition = [BZObjectStoreConditionModel condition];
fetchCondition.sqlite.where = @"name = 'sample1' and price > 50";
fetchCondition.sqlite.orderBy = @"name desc";

NSArray *objects = [os fetchObjects:[SampleModel class] condition:fetchCondition error:&error];

但不幸的是，'where' 是 Swift 中的关键字。我们不想手动更改 BZObjectStore 中的代码。那么有什么办法可以解决这个问题吗？

Answer 1

你必须使用反引号:

fetchCondition.sqlite.`where` = @"name = 'sample1' and price > 50";

To use a reserved word as an identifier, put a backtick (`) before and after it. For example, class is not a valid identifier, but `class` is valid. The backticks are not considered part of the identifier; `x` and x have the same meaning.

The Swift Programming Language – Lexical Structure