Passing around a list of differently typed functions
Ali Çehreli via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Mon Jun 23 11:30:12 PDT 2014
On 06/22/2014 11:32 PM, FreeSlave wrote:> On Monday, 23 June 2014 at
01:16:49 UTC, Evan Davis wrote:
>> As the subject says, I would like to pass around an array of
>> functions. The trick is, that the functions have different type
>> signatures. Is there a way to put the two functions
>>
>> int foo(int a, int b);
>> bool bar(bool a, bool b);
>>
>> into one array, that I can pass around and cast as necessary?
>>
>> Thanks, Evan
>
> You can pass them as pointers, for example cast to void*. But you still
> need correct signature to cast pointer to actual type before call
function.
In C and C++, void* is for data pointers only. As function pointers are
a different kind of beast, casting to and from void* is undefined
behavior. (Note: It works on all common platforms.)
I wonder whether D has any decision on that.
Ali
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