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March 30, 2011 Status of $ in class/struct? | ||||
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I haven't been following the $/__dollar/opDollar/etc chronicles very closely, and I can't find the answer in the docs, but I have simple question: Suppose I have this: ------------------------------- class Foo { int[] data; this(int[] data) { this.data = data; } ref T opIndex(size_t i) { return data[i]; } } void main() { auto foo = Foo([1,2,3,4,5]); ... } ------------------------------- Question: Is there currently any way for Foo's author to make "foo[$-1]" work? If so, how? |
March 30, 2011 Re: Status of $ in class/struct? | ||||
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Posted in reply to Nick Sabalausky | I think its broken or something. It looks like its trying to find __dollar in the current scope. Because this non-solution seems to work: module opDollarTest; import std.stdio; class Foo { int[] data; this(int[] data) { this.data = data; } int opIndex(int a) { return data[a]; } @property size_t length() { return data.length; } @property size_t opDollar() { return length; } } void main() { auto foo = new Foo([1,2,3,4,5]); size_t __dollar() { return foo.opDollar(); } writeln(foo[$-1]); } |
March 30, 2011 Re: Status of $ in class/struct? | ||||
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Posted in reply to Nick Sabalausky | On 2011-03-29 19:29, Nick Sabalausky wrote: > I haven't been following the $/__dollar/opDollar/etc chronicles very closely, and I can't find the answer in the docs, but I have simple question: [snip] > Question: > > Is there currently any way for Foo's author to make "foo[$-1]" work? If so, how? It's not implemented yet: http://d.puremagic.com/issues/show_bug.cgi?id=3474 - Jonathan M Davis |
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