https://github.com/JuliaLang/julia/issues/265 – I'd really like to fix this.

On Fri, Dec 5, 2014 at 2:09 PM, Páll Haraldsson <[email protected]>
wrote:

>
>
> On Friday, December 5, 2014 5:25:18 PM UTC, Steven G. Johnson wrote:
>>
>> There is no runtime overhead in cases where the types are known at
>> compile time.
>>
>
> Be aware of one thing, say you define:
>
> f(x, y) = 1 + 2p(x)y; p(x) = 2x^2 + 1;
>
> You will get the same code even as if you defined p first. UNLESS you try to 
> run f first by accident (or intentionally as I did). Then at compile time you 
> get complicated assembly code (and an error).
>
> Then if you define p then f is already defined and now works and will not get 
> reoptimized. This gives slower result in interactive.
>
> Best regards,
> Palli.
>
>

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