Showing 2,704 of 2,705 total issues
Unused block argument - key
. If it's necessary, use _
or _key
as an argument name to indicate that it won't be used. Open
$CONFIGURABLES.each_pair { |key, data|
- Read upRead up
- Exclude checks
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
Unused block argument - key
. If it's necessary, use _
or _key
as an argument name to indicate that it won't be used. Open
tree.each_pair { |key, data|
- Read upRead up
- Exclude checks
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
Use each_key
instead of keys.each
. Open
commands.keys.each { |cmd|
- Read upRead up
- Exclude checks
This cop checks for uses of each_key
and each_value
Hash methods.
Note: If you have an array of two-element arrays, you can put parentheses around the block arguments to indicate that you're not working with a hash, and suppress RuboCop offenses.
Example:
# bad
hash.keys.each { |k| p k }
hash.values.each { |v| p v }
hash.each { |k, _v| p k }
hash.each { |_k, v| p v }
# good
hash.each_key { |k| p k }
hash.each_value { |v| p v }
Useless assignment to variable - changed
. Open
changed = true
- Read upRead up
- Exclude checks
This cop checks for every useless assignment to local variable in every
scope.
The basic idea for this cop was from the warning of ruby -cw
:
assigned but unused variable - foo
Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end
Do not suppress exceptions. Open
rescue MU::MuError => e
- Read upRead up
- Exclude checks
This cop checks for rescue blocks with no body.
Example:
# bad
def some_method
do_something
rescue
# do nothing
end
Example:
# bad
begin
do_something
rescue
# do nothing
end
Example:
# good
def some_method
do_something
rescue
handle_exception
end
Example:
# good
begin
do_something
rescue
handle_exception
end
Avoid more than 4 levels of block nesting. Open
subdata["value"] = newval if !newval.nil?
- Read upRead up
- Exclude checks
This cop checks for excessive nesting of conditional and looping constructs.
You can configure if blocks are considered using the CountBlocks
option. When set to false
(the default) blocks are not counted
towards the nesting level. Set to true
to count blocks as well.
The maximum level of nesting allowed is configurable.
Redundant use of Object#to_s
in interpolation. Open
puts "#{cmd} RETRY #{retries.to_s}".light_red
- Read upRead up
- Exclude checks
This cop checks for string conversion in string interpolation, which is redundant.
Example:
# bad
"result is #{something.to_s}"
Example:
# good
"result is #{something}"
Use =~
in places where the MatchData
returned by #match
will not be used. Open
if n.match(/^#{Regexp.quote(pool_name)}-[a-z0-9]{3}$/i)
- Read upRead up
- Exclude checks
This cop identifies the use of Regexp#match
or String#match
, which
returns #<MatchData>
/nil
. The return value of =~
is an integral
index/nil
and is more performant.
Example:
# bad
do_something if str.match(/regex/)
while regex.match('str')
do_something
end
# good
method(str =~ /regex/)
return value unless regex =~ 'str'
Avoid rescuing the Exception
class. Perhaps you meant to rescue StandardError
? Open
rescue Exception
- Read upRead up
- Exclude checks
This cop checks for rescue blocks targeting the Exception class.
Example:
# bad
begin
do_something
rescue Exception
handle_exception
end
Example:
# good
begin
do_something
rescue ArgumentError
handle_exception
end
Unused block argument - node
. If it's necessary, use _
or _node
as an argument name to indicate that it won't be used. Open
$children.each_pair { |pid, node|
- Read upRead up
- Exclude checks
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
Avoid more than 4 levels of block nesting. Open
puts "#{nodename} - #{output}" if output.match(/[^\s]/)
- Read upRead up
- Exclude checks
This cop checks for excessive nesting of conditional and looping constructs.
You can configure if blocks are considered using the CountBlocks
option. When set to false
(the default) blocks are not counted
towards the nesting level. Set to true
to count blocks as well.
The maximum level of nesting allowed is configurable.
Use =~
in places where the MatchData
returned by #match
will not be used. Open
puts "#{nodename} - #{output}" if output.match(/[^\s]/)
- Read upRead up
- Exclude checks
This cop identifies the use of Regexp#match
or String#match
, which
returns #<MatchData>
/nil
. The return value of =~
is an integral
index/nil
and is more performant.
Example:
# bad
do_something if str.match(/regex/)
while regex.match('str')
do_something
end
# good
method(str =~ /regex/)
return value unless regex =~ 'str'
File.exists?
is deprecated in favor of File.exist?
. Open
if File.exists?("/opt/opscode/bin/chef-server-ctl")
- Read upRead up
- Exclude checks
This cop checks for uses of the deprecated class method usages.
Example:
# bad
File.exists?(some_path)
Example:
# good
File.exist?(some_path)
Useless assignment to variable - exists
. Open
exists = false
- Read upRead up
- Exclude checks
This cop checks for every useless assignment to local variable in every
scope.
The basic idea for this cop was from the warning of ruby -cw
:
assigned but unused variable - foo
Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end
Useless assignment to variable - bucket
. Did you mean bucketobj
? Open
bucket = MU::Cloud::Azure.storage(credentials: credset).get_bucket(bucketname)
- Read upRead up
- Exclude checks
This cop checks for every useless assignment to local variable in every
scope.
The basic idea for this cop was from the warning of ruby -cw
:
assigned but unused variable - foo
Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end
Useless assignment to variable - newmap
. Use _
or _newmap
as a variable name to indicate that it won't be used. Open
newtree, newmap = menu(
- Read upRead up
- Exclude checks
This cop checks for every useless assignment to local variable in every
scope.
The basic idea for this cop was from the warning of ruby -cw
:
assigned but unused variable - foo
Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end
Use each_key
instead of keys.each
. Open
$CONFIGURABLES[key]["subtree"].keys.each { |subkey|
- Read upRead up
- Exclude checks
This cop checks for uses of each_key
and each_value
Hash methods.
Note: If you have an array of two-element arrays, you can put parentheses around the block arguments to indicate that you're not working with a hash, and suppress RuboCop offenses.
Example:
# bad
hash.keys.each { |k| p k }
hash.values.each { |v| p v }
hash.each { |k, _v| p k }
hash.each { |_k, v| p v }
# good
hash.each_key { |k| p k }
hash.each_value { |v| p v }
Use =~
in places where the MatchData
returned by #match
will not be used. Open
if cloud.match(/^#{Regexp.quote(c)}$/i)
- Read upRead up
- Exclude checks
This cop identifies the use of Regexp#match
or String#match
, which
returns #<MatchData>
/nil
. The return value of =~
is an integral
index/nil
and is more performant.
Example:
# bad
do_something if str.match(/regex/)
while regex.match('str')
do_something
end
# good
method(str =~ /regex/)
return value unless regex =~ 'str'
Redundant use of Object#to_s
in interpolation. Open
MU.log "Userdata script too long updating #{nodename} (#{userdata.size.to_s}/#{Regexp.last_match[1]} bytes)", MU::ERR
- Read upRead up
- Exclude checks
This cop checks for string conversion in string interpolation, which is redundant.
Example:
# bad
"result is #{something.to_s}"
Example:
# good
"result is #{something}"
Useless assignment to variable - badnodes
. Open
badnodes = []
- Read upRead up
- Exclude checks
This cop checks for every useless assignment to local variable in every
scope.
The basic idea for this cop was from the warning of ruby -cw
:
assigned but unused variable - foo
Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end