Std.FlatMap.containsKey

fn

This is a callable function.

What it does

Whether the table contains an entry for the specified 64-bit key.

Read the signature

• The text after the name is the type checked by Pudu.
• Read arrows from left to right: inputs come first, and the final type is returned.
• & borrows a value for this call instead of moving or copying it.
• Names inside [ ] are type arguments, such as the item type held by a collection.