Std.Tree.preorder

fn

This is a callable function.

What it does

Every value, each node before its children, children in order.

The order a reader gives a hierarchy when they read it aloud: the heading,

then everything under the heading, then the next heading.

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.