Maps

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Maps store key-value pairs, allowing fast lookup by key.

Creating Maps

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Empty Maps

An empty map is written {:}, not {}. Braces on their own are the empty set, so the colon is what tells the two apart. An empty map also needs an explicit type, since there are no entries to infer the key and value types from.

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Writing {} where a map is expected is a compile error that points you at {:}.

Accessing Values

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Modifying Maps

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Map Methods

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Previous: Lists | Next: Sets

Creating Maps​

Empty Maps​

Accessing Values​

Modifying Maps​

Map Methods​

Creating Maps

Empty Maps

Accessing Values

Modifying Maps

Map Methods