var.byPair

Get a forward range over the key-value pairs of this object.

This method returns a PairRange that can be used with std.algorithm functions and other range-based operations without allocating arrays.

Each element is a KeyValuePair struct with:

• .key: the key as a string
• .val: reference to the value as a var

  Returns

  A PairRange over the object entries, or an empty range if this is not an object.

  Examples

  import std.algorithm : filter, map;
  import std.array : array;
  var obj;
  obj["a"] = 1;
  obj["b"] = 2;
  auto pairs = obj.byPair.filter!(p => p.val.as!int > 1).map!(p => p.key).array;
  assert(pairs == ["b"]);