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Function object.get

Looks up key; if it exists returns corresponding value else evaluates and returns defaultValue.

inout(V) get(K, V) (
  inout(V[K]) aa,
  K key,
  lazy inout(V) defaultValue
);

inout(V) get(K, V) (
  inout(V[K])* aa,
  K key,
  lazy inout(V) defaultValue
);

Parameters

NameDescription
aa The associative array.
key The key.
defaultValue The default value.

Returns

The value.

Example

auto aa = ["k1": 1];
writeln(aa.get("k1", 0)); // 1
writeln(aa.get("k2", 0)); // 0

Authors

Walter Bright, Sean Kelly

License

Boost License 1.0.