MapKeys[K: K, V: V, H: HashFunction[K] val, M: HashMap[K, V, H] #read]

[Source]

An iterator over the keys in a map.

class ref MapKeys[K: K, V: V, H: HashFunction[K] val, M: HashMap[K, V, H] #read] is
  Iterator[M->K] ref

Implements


Constructors

create

[Source]

Creates an iterator for the given map.

new ref create(
  map: M)
: MapKeys[K, V, H, M] ref^

Parameters

  • map: M

Returns


Public Functions

has_next

[Source]

True if it believes there are remaining entries. May not be right if values were added or removed from the map.

fun box has_next()
: Bool val

Returns


next

[Source]

Returns the next key, or raises an error if there isn't one. If keys are added during iteration, this may not return all keys.

fun ref next()
: M->K ?

Returns

  • M->K ?