Multiple comparison detected RB-LI1035
Bug risk
Major
7 months ago
—
7 months old
Use the
&& operator to compare multiple values.14
15# Raises "multiple comparison detected"
16x < y < z
1710 <= x <= 2018
19# Raises "empty rescue block detected"
20beginUse the
&& operator to compare multiple values.13end while a == b
14
15# Raises "multiple comparison detected"
16x < y < z1710 <= x <= 20
18
19# Raises "empty rescue block detected"
Description
In math and Python, we can use x < y < z style comparison to compare multiple value.
However, we can't use the comparison in Ruby. However, the comparison is not syntax error.
This cop checks the bad usage of comparison operators.
Bad practice
x < y < z
Recommended
x < y && y < z