Idea: swap with multiple arguments

Steven Schveighoffer via Digitalmars-d digitalmars-d at puremagic.com
Mon May 23 15:10:02 PDT 2016


On 5/23/16 5:47 PM, Ali Çehreli wrote:
> On 05/23/2016 01:27 PM, Steven Schveighoffer wrote:
>> On 5/23/16 4:01 PM, Andrei Alexandrescu wrote:
>>> So swap(a, b) swaps the contents of a and b. This could be easily
>>> generalized to multiple arguments such that swap(a1, a2, ..., an)
>>> arranges things such that a1 gets an, a2 gets a1, a3 gets a2, etc. I do
>>> know applications for three arguments. Thoughts? -- Andrei
>>
>> One thing that screams out to me: this should be called rotate, not swap.
>>
>
> Yes, rotate(), but then I would never remember what direction it rotates.

Use the law of UFCS:

x.rotate(y, z); // x-> y, y -> z, z -> x

-Steve



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