core: Add extension methods for is_null, is_not_null
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@ -8,6 +8,7 @@ import path = path::path;
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import str::extensions;
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import vec::extensions;
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import option::extensions;
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import ptr::extensions;
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export path, option, some, none, unreachable;
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export extensions;
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@ -11,6 +11,7 @@ export memcpy;
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export memmove;
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export buf_len;
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export position;
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export extensions;
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import libc::c_void;
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@ -100,6 +101,15 @@ unsafe fn memmove<T>(dst: *T, src: *T, count: uint) {
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libc_::memmove(dst as *c_void, src as *c_void, n);
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}
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#[doc = "Extension methods for pointers"]
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impl extensions<T> for *T {
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#[doc = "Returns true if the pointer is equal to the null pointer."]
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pure fn is_null<T>() -> bool { is_null(self) }
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#[doc = "Returns true if the pointer is not equal to the null pointer."]
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pure fn is_not_null<T>() -> bool { is_not_null(self) }
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}
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#[test]
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fn test() unsafe {
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type pair = {mut fst: int, mut snd: int};
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