The each_slice method in Ruby is used to iterate over
an array in groups of a specified size, or slice.
each_slice divides the array into consecutive slices
of the specified size and yields each slice to the
provided block. You can perform operations on each
slice within the block, such as printing, processing,
or aggregating data.
If the array length is not evenly divisible by the
slice size, the last slice will contain the remaining
elements.
If you don't provide a block, each_slice returns an
enumerator, allowing you to chain it with other
Enumerable methods.