(require mzlib/for)

The mzlib/for library re-exports from scheme/base:

for/fold for*/fold
for for*
for/list for*/list
for/lists for*/lists
for/and for*/and
for/or for*/or
for/first for*/first
for/last for*/last
 
for/fold/derived for*/fold/derived
 
in-range
in-naturals
in-list
in-vector
in-string
in-bytes
in-input-port-bytes
in-input-port-chars
in-hash-table
in-hash-table-keys
in-hash-table-values
in-hash-table-pairs
 
in-parallel
stop-before
stop-after
in-indexed
 
sequence?
sequence-generate
 
define-sequence-syntax
make-do-sequence
:do-in