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version 2.104.0

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object.dup - multiple declarations

Function dup

Creates a new associative array of the same size and copies the contents of the associative array into it.

V[K] dup(T, K, V) (
  T aa
);

V[K] dup(T, K, V) (
  T* aa
);

Parameters

NameDescription
aa The associative array.

Example

auto aa = ["k1": 2];
auto a2 = aa.dup;
aa["k2"] = 3;
assert("k2" !in a2);

Function dup

Provide the .dup array property.

auto dup(T) (
  T[] a
) @property
if (!is(const(T) : T));

T[] dup(T) (
  const(T)[] a
) @property
if (is(const(T) : T));

Example

auto arr = [1, 2];
auto arr2 = arr.dup;
arr[0] = 0;
writeln(arr); // [0, 2]
writeln(arr2); // [1, 2]

Authors

Walter Bright, Sean Kelly

License

Boost License 1.0.