cardname/lib/cardname/manipulate.rb
Assignment Branch Condition size for swap_all_subsequences is too high. [25.4/15] Open
Open
def swap_all_subsequences oldseq, newseq
res = []
i = 0
while i <= num_parts - oldseq.num_parts
# for performance reasons: check first character first then the rest
- Read upRead up
- Create a ticketCreate a ticket
- Exclude checks
This cop checks that the ABC size of methods is not higher than the configured maximum. The ABC size is based on assignments, branches (method calls), and conditions. See http://c2.com/cgi/wiki?AbcMetric
Method swap_all_subsequences
has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring. Open
Open
def swap_all_subsequences oldseq, newseq
res = []
i = 0
while i <= num_parts - oldseq.num_parts
# for performance reasons: check first character first then the rest
- Read upRead up
- Create a ticketCreate a ticket
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
Use match?
instead of =~
when MatchData
is not used. Open
Open
self =~ /^#{Regexp.escape joint}/ ? self : (joint + self)
- Read upRead up
- Create a ticketCreate a ticket
- Exclude checks
In Ruby 2.4, String#match?
, Regexp#match?
and Symbol#match?
have been added. The methods are faster than match
.
Because the methods avoid creating a MatchData
object or saving
backref.
So, when MatchData
is not used, use match?
instead of match
.
Example:
# bad
def foo
if x =~ /re/
do_something
end
end
# bad
def foo
if x.match(/re/)
do_something
end
end
# bad
def foo
if /re/ === x
do_something
end
end
# good
def foo
if x.match?(/re/)
do_something
end
end
# good
def foo
if x =~ /re/
do_something(Regexp.last_match)
end
end
# good
def foo
if x.match(/re/)
do_something($~)
end
end
# good
def foo
if /re/ === x
do_something($~)
end
end