[erlang-questions] learning Erlang: factoring primes

Kostis Sagonas <>
Fri May 4 10:59:26 CEST 2007


Anthony Shipman wrote:
> On Friday 04 May 2007 18:07, Kostis Sagonas wrote:
> 
>> Please, do not use == for arithmetic comparisons with integers (*).
>> It's brain damage from C.
>>
>> Learn to use =:= instead.  It's more kosher.
> 
> Is there a performance difference?
> 

In emulated code, the performance difference, if any, it is quite small.
In native code, the performance difference is currently also small, 
although this might change soon (if we partly inline =:=).

But is it not an issue of performance; it's a problem in the semantics 
of the == operator.

Kostis



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