core.internal.array.arrayassign

@trusted Tarr _d_arrayassign_l(Tarr : T[], T)(return scope Tarr to, scope Tarr from);

Does array assignment (not construction) from another array of the same element type. Handles overlapping copies. Assumes the right hand side is an lvalue,

Used for static array assignment with non-POD element types:

struct S
{
    ~this() {} // destructor, so not Plain Old Data
}

void main()
{
  S[3] arr;
  S[3] lvalue;

  arr = lvalue;
  // Generates:
  // _d_arrayassign_l(arr[], lvalue[]), arr;
}

Parameters:

Tarr to	destination array
Tarr from	source array

Returns:

to

@trusted Tarr _d_arrayassign_r(Tarr : T[], T)(return scope Tarr to, scope Tarr from);

Does array assignment (not construction) from another array of the same element type. Does not support overlapping copies. Assumes the right hand side is an rvalue,

Used for static array assignment with non-POD element types:

struct S
{
    ~this() {} // destructor, so not Plain Old Data
}

void main()
{
  S[3] arr;
  S[3] getRvalue() {return lvalue;}

  arr = getRvalue();
  // Generates:
  // (__appendtmp = getRvalue), _d_arrayassign_l(arr[], __appendtmp), arr;
}

Parameters:

Tarr to	destination array
Tarr from	source array

Returns:

to

@trusted Tarr _d_arraysetassign(Tarr : T[], T)(return scope Tarr to, ref scope T value);

Sets all elements of an array to a single value. Takes into account postblits, copy constructors and destructors. For Plain Old Data elements,rt/memset.d is used.

struct S
{
    ~this() {} // destructor, so not Plain Old Data
}

void main()
{
  S[3] arr;
  S value;

  arr = value;
  // Generates:
  // _d_arraysetassign(arr[], value), arr;
}

Parameters:

Tarr to	destination array
T value	the element to set

Returns:

to