Do not compute the size of statically sized objects.
72
73
74# Raises "Use `size` instead of `count`"
75[1, 2, 3].count76
77file_path = 'path/to/some/file'
78unless File.exist?(file_path)
Description
Sizes of objects that we know to be static should not be computed.
For example, we know the size of array in the snippet below to be 3. We can directly use the value instead of calculating it first.
Bad practice
[1, 2, 3].count
Recommended
[1, 2, *arr].count