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2145 :: Tuple/object address alignment

[2016-03-22T02:35:37+01:00]

Schala (orginal) [2016-03-22T02:35:37+01:00] view original

In C/C++, structs and classes, the size of their memory allocation depends on the order of their members unless byte packed. I'm wondering if Nim's tuples and objects sizes are influenced by the order of their member variables, or if the garbage collector makes that moot?

Same in Nim. You can inspect the intermediate C code to see that a tuple

type MyTuple = tuple[x: int, y: float]

becomes a C struct:

struct Mytuple115004 {
NI Field0;
NF Field1;
};

And similary for an object:

type MyObject = object
  x: int
  y: float

struct  Myobject115010  {
NI x;
NF y;
};