toHash => pure, nothrow, const, @safe

[Walter Bright]

On 3/12/2012 1:08 AM, Martin Nowak wrote:
> What's wrong with auto-inference. Inferred attributes are only strengthening
> guarantees.

Auto-inference is currently done for lambdas and template functions - why? - 
because the function's implementation is guaranteed to be visible to the 
compiler. For other functions, not so, and so the attributes must be part of the 
function signature.