sunnyxx

- (void)set_:(NSInteger)_
{
    __ = _;
}

sunnyxx

// Problem:
// I want to hack -awakeAfterUsingCoder: which has an attribute "NS_REPLACES_RECEIVER"
// Now I have a block version implmentation and to be added into UIView class
// It works fine in ARC with right object ownership
// But Xcode gives me a warning "ns_consumes_self attribute only applies to methods"

id (^newIMPBlock)(id, NSCoder *) NS_REPLACES_RECEIVER =
    ^id (UIView *self, __unused NSCoder *decoder) NS_REPLACES_RECEIVER {
        // Do my staff
    };

sunnyxx

解决多个 Xcode 导致的 N 个模拟器问题

效果（感谢汤哥的截图）

命令（来自百度知道唐代富）：

1. 彻底关闭 Xcode 和模拟器
2. $ sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService
3. $ rm -rf ~/Library/Developer/CoreSimulator/Devices

sunnyxx

__attribute__((overloadable)) NSString *descriptionFromValue(float value) {
    return @(value).stringValue;
}
__attribute__((overloadable)) NSString *descriptionFromValue(NSRange range) {
    return NSStringFromRange(range);
}
__attribute__((overloadable)) NSString *descriptionFromValue(id object) {
    return [object description];
}