Char.Equals 与 Object.Equals——ReSharper 建议我应该使用 Object.Equals。我应该吗？
基本上，我想知道在这种情况下我是否应该听 ReSharper...
您会发现与字符相比应该使用 Char.Equals(char) 因为它可以避免拆箱，但 Resharper 建议使用 Object.Equals(obj) 。也许我在这里遗漏了一些东西？
private const DEFAULT_CHAR = '#';
// DependencyProperty backing
public Char SpecialChar
{
get { return (Char)GetValue(SpecialCharProperty); }
}
// ReSharper - Access to a static member of a type via a derived type.
if (Char.Equals(control.SpecialChar, DEFAULT_CHAR)) { ... }
我猜这是因为有 DependencyProperty 支持？
Basically, I'm wondering if I should listen to ReSharper in this instance...
You'd figure that comparing to characters one should use Char.Equals(char) since it avoids unboxing, but Resharper suggests using Object.Equals(obj). Maybe I'm missing something here?
private const DEFAULT_CHAR = '#';
// DependencyProperty backing
public Char SpecialChar
{
get { return (Char)GetValue(SpecialCharProperty); }
}
// ReSharper - Access to a static member of a type via a derived type.
if (Char.Equals(control.SpecialChar, DEFAULT_CHAR)) { ... }
I'm guessing it's because there is a DependencyProperty backing?
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不可能覆盖
static成员 -Object.Equals()是静态成员，并且Char不能 覆盖它，即使您可以在 Char 类型上调用它（参数仍然是Object类型）调用都没有区别
因此，无论您调用还是
，因为装箱将发生在无论哪种情况。
为了避免这种情况，请使用实例方法，该方法在
Char中被重写：It is impossible to override
staticmembers -Object.Equals()is a static member, andCharcannot override it, even though you can call it on the Char type (the params are still of typeObject)Therefore, it makes no difference whether you call
or
since boxing will occur in either case.
To avoid this, use the instance method, which is overridden in
Char:Char.Equals(control.SpecialChar, DEFAULT_CHAR)是对Object.Equals(object, object)的调用，因此 resharper 在这里是正确的。我建议使用
control.SpecialChar.Equals(DEFAULT_CHAR)或者只是
DEFAULT_CHAR == control.SpecialCharChar.Equals(control.SpecialChar, DEFAULT_CHAR)is a call toObject.Equals(object, object), so resharper is correct here.I would suggest to use
control.SpecialChar.Equals(DEFAULT_CHAR)or just
DEFAULT_CHAR == control.SpecialChar