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264 :: Default Values for Objects/Tuples

[2013-10-07T03:37:16+02:00]

Varriount (orginal) [2013-10-07T03:37:16+02:00] view original

I've recently started programming in Nimrod, and was wondering, is there any simple way to define an object or tuple with a default value, much like the way default parameters are declared?

Araq (orginal) [2013-10-07T09:04:20+02:00] view original

No, but it's a possible feature after 1.0. For now you have to use a constructor proc.

enurlyx (orginal) [2013-10-09T22:02:09+02:00] view original
```
var
  a = TSomeObject(v1: 1) # if ref then new is implicite
  b = newSomeObject(4, 5, 6) # returns a ref
  c = newSomeOtherObject(7, 8, 9) # return a type (no ref)
  d: SomeOtherObject

d.initSomeOtherObject(4)
```
c and d are of type SomeOtherObject. Is the performance of the initialisation of c the same as for d? Will the 'return' be the same memory of 'c' or will 'return' be copied into 'c'?

Araq (orginal) [2013-10-09T22:50:34+02:00] view original

Nimrod's "result" variable provides C++'s "named return value optimization" as a language feature. Most of the time "return" doesn't copy.