Cyclomatic complexity for format_output_hash is too high. [7/6] Open
def format_output_hash(variables)
vars = get_variables
questions = get_questions(variables.map{|v|v["questions"]}.flatten.uniq)
topics = get_topics(variables.map{|v|v["sources_topic"]}.flatten.uniq + variables.map{|v|v["topic"]}.flatten.uniq)
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This cop checks that the cyclomatic complexity of methods is not higher than the configured maximum. The cyclomatic complexity is the number of linearly independent paths through a method. The algorithm counts decision points and adds one.
An if statement (or unless or ?:) increases the complexity by one. An else branch does not, since it doesn't add a decision point. The && operator (or keyword and) can be converted to a nested if statement, and ||/or is shorthand for a sequence of ifs, so they also add one. Loops can be said to have an exit condition, so they add one.
Method format_output_hash
has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring. Open
def format_output_hash(variables)
vars = get_variables
questions = get_questions(variables.map{|v|v["questions"]}.flatten.uniq)
topics = get_topics(variables.map{|v|v["sources_topic"]}.flatten.uniq + variables.map{|v|v["topic"]}.flatten.uniq)
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Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Method format_output_hash
has 26 lines of code (exceeds 25 allowed). Consider refactoring. Open
def format_output_hash(variables)
vars = get_variables
questions = get_questions(variables.map{|v|v["questions"]}.flatten.uniq)
topics = get_topics(variables.map{|v|v["sources_topic"]}.flatten.uniq + variables.map{|v|v["topic"]}.flatten.uniq)
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Unused block argument - i
. If it's necessary, use _
or _i
as an argument name to indicate that it won't be used. Open
variables = variables.group_by{|v| v['id']}.map do | i, grouped_variables |
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This cop checks for unused block arguments.
Example:
# bad
do_something do |used, unused|
puts used
end
do_something do |bar|
puts :foo
end
define_method(:foo) do |bar|
puts :baz
end
Example:
#good
do_something do |used, _unused|
puts used
end
do_something do
puts :foo
end
define_method(:foo) do |_bar|
puts :baz
end