On 10/22/12 1:59 PM, Nathan wrote:
Is the indexing operation a primitive language implementation, or does it translate into a trait method or some other user-definable behavior? In the latter case, what is it's interface? (Nothing in the vec docs for 0.4 obviously implement v[i].)
It desugars to an invocation of a method on the Index trait in core::ops, which is parameterized over the right-hand side. However, indexing into a primitive vector type is currently a primitive operation defined over both ints and uints.
If it doesn't prove would be terribly inconvenient, I would be in favor of changing this to desugar to a trait implementation in the core vec module defined over uints only.
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