# Iterators

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Demonstrations:

 1. ‹queue›   – an iterable queue
 2. ‹split›   – chop up a ‹string_view› into pieces
 3. ‹glob›    – iterate over matches of a pattern in a string

Elementary exercises:

 1. ‹iota›    – an iterable sequence of integers
 2. ‹view›    – iterate a slice of an existing collection
 3. ‹skip›    – iterate every n-th item (a stride) of a collection

Free exercises:

 1. ‹map›     – applying a function to a sequence
 2. ‹range›   – views with a shared backing store
 3. ‹permute› – iterate all permutations of a sequence

Graded exercises:

 1. ‹seq›     – generic sequences
 2. ‹filter›  – filtered sequences
 3. ‹zip›     – iterate two sequences in lockstep
 4. ‹nibble›  – a fixed-size nibble array
 5. ‹tree›    – in-order iteration of a tree
 6. ‹scan›    – generalized prefix sum