Performance-Caller.md

Pattern: Use of caller[n] instead of caller(n..n).first

Issue: -

Description

This rule identifies places where caller[n] can be replaced by caller(n..n).first.

Examples

# bad
caller[1]
caller.first
caller_locations[1]
caller_locations.first

# good
caller(2..2).first
caller(1..1).first
caller_locations(2..2).first
caller_locations(1..1).first

Further Reading

• RuboCop - Performance/Caller