Enum.chunk_every/4
defmodule Enum do
def chunk_every(enumerable, count, step, leftover \\ [])
end
Returns list of lists containing count
elements each, where each new chunk starts step
elements into enumerable
.
step
is optional and, if not passed, defaults to count
, i.e. chunks do not overlap.
If the last chunk does not have count
elements to fill the chunk, elements are taken from leftover
to fill in the chunk. If leftover
does not have enough elements to fill the chunk, then a partial chunk is returned with less than count
elements.
If :discard
is given in leftover
, the last chunk is discarded unless it has exactly count
elements.