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Programming-Idioms

  • Ruby
  • Pascal

Idiom #363 Set to list

Create the list y from the set x.

The resulting list y may be in any order.

fgl
Type
  TSet = set of T;
  TList = specialize TFPGList<T>;
var
  x: TSet;
  y: TList;
  item: T;
begin
...
  y := TList.Create;
  for item in x do y.Add(item);
...

Type T is the type of the items in set x
y = x.to_a
y := make([]T, 0, len(x))
for v := range x {
	y = append(y, v)
}

x is a map[T]struct{}

T is the type of the items
New implementation...
< > ⌨
programming-idioms.org 
Type
  TSet = set of T;
  TList = specialize TFPGList<T>;
var
  x: TSet;
  y: TList;
  item: T;
begin
...
  y := TList.Create;
  for item in x do y.Add(item);
...
y = x.to_a
y := make([]T, 0, len(x))
for v := range x {
	y = append(y, v)
}
y := slices.Collect(maps.Keys(x))
y = list(x)