# 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

Preparatory 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

Regular 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
 4. ‹critbit›  – iterate a ‘critbit’ binary trie in order
 5. ‹matrix› † – iterate a compact rectangular array
 6. ‹bits›     – iterate bits in a word