Assignment Branch Condition size for initialize_distribution is too high. [60.04/15] Open
def initialize_distribution mu_init: 0, sigma_init: 1
@mu = case mu_init
when Range # initialize with random in range
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
- 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 has too many lines. [30/10] Open
def initialize_distribution mu_init: 0, sigma_init: 1
@mu = case mu_init
when Range # initialize with random in range
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
- Exclude checks
This cop checks if the length of a method exceeds some maximum value. Comment lines can optionally be ignored. The maximum allowed length is configurable.
Method initialize_distribution
has a Cognitive Complexity of 24 (exceeds 5 allowed). Consider refactoring. Open
def initialize_distribution mu_init: 0, sigma_init: 1
@mu = case mu_init
when Range # initialize with random in range
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
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
Assignment Branch Condition size for train is too high. [28.79/15] Open
def train picks: sorted_inds
g_mu = utils.dot(picks)
g_log_sigma = popsize.times.inject(NArray.zeros sigma.shape) do |sum, i|
u = utils[i]
ind = picks[i, true]
- Read upRead up
- 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
Cyclomatic complexity for initialize_distribution is too high. [16/6] Open
def initialize_distribution mu_init: 0, sigma_init: 1
@mu = case mu_init
when Range # initialize with random in range
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
- Exclude checks
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.
Perceived complexity for initialize_distribution is too high. [12/7] Open
def initialize_distribution mu_init: 0, sigma_init: 1
@mu = case mu_init
when Range # initialize with random in range
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
- Exclude checks
This cop tries to produce a complexity score that's a measure of the
complexity the reader experiences when looking at a method. For that
reason it considers when
nodes as something that doesn't add as much
complexity as an if
or a &&
. Except if it's one of those special
case
/when
constructs where there's no expression after case
. Then
the cop treats it as an if
/elsif
/elsif
... and lets all the when
nodes count. In contrast to the CyclomaticComplexity cop, this cop
considers else
nodes as adding complexity.
Example:
def my_method # 1
if cond # 1
case var # 2 (0.8 + 4 * 0.2, rounded)
when 1 then func_one
when 2 then func_two
when 3 then func_three
when 4..10 then func_other
end
else # 1
do_something until a && b # 2
end # ===
end # 7 complexity points
Method initialize_distribution
has 30 lines of code (exceeds 25 allowed). Consider refactoring. Open
def initialize_distribution mu_init: 0, sigma_init: 1
@mu = case mu_init
when Range # initialize with random in range
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
Use Array.new(ndims)
with a block instead of .times.map
only if ndims
is always 0 or more. Open
NArray[*ndims.times.map { mu_rng.rand mu_init }]
- Read upRead up
- Exclude checks
This cop checks for .times.map calls. In most cases such calls can be replaced with an explicit array creation.
Example:
# bad
9.times.map do |i|
i.to_s
end
# good
Array.new(9) do |i|
i.to_s
end
end
at 25, 6 is not aligned with case
at 9, 12. Open
end
- Read upRead up
- Exclude checks
This cop checks whether the end keywords are aligned properly.
Three modes are supported through the EnforcedStyleAlignWith
configuration parameter:
If it's set to keyword
(which is the default), the end
shall be aligned with the start of the keyword (if, class, etc.).
If it's set to variable
the end
shall be aligned with the
left-hand-side of the variable assignment, if there is one.
If it's set to start_of_line
, the end
shall be aligned with the
start of the line where the matching keyword appears.
Example: EnforcedStyleAlignWith: keyword (default)
# bad
variable = if true
end
# good
variable = if true
end
Example: EnforcedStyleAlignWith: variable
# bad
variable = if true
end
# good
variable = if true
end
Example: EnforcedStyleAlignWith: startofline
# bad
variable = if true
end
# good
puts(if true
end)
Surrounding space missing for operator /
. Open
@log_sigma += g_log_sigma * (lrate/2)
- Read upRead up
- Exclude checks
Checks that operators have space around them, except for ** which should not have surrounding space.
Example:
# bad
total = 3*4
"apple"+"juice"
my_number = 38/4
a ** b
# good
total = 3 * 4
"apple" + "juice"
my_number = 38 / 4
a**b
end
at 37, 6 is not aligned with case
at 26, 15. Open
end
- Read upRead up
- Exclude checks
This cop checks whether the end keywords are aligned properly.
Three modes are supported through the EnforcedStyleAlignWith
configuration parameter:
If it's set to keyword
(which is the default), the end
shall be aligned with the start of the keyword (if, class, etc.).
If it's set to variable
the end
shall be aligned with the
left-hand-side of the variable assignment, if there is one.
If it's set to start_of_line
, the end
shall be aligned with the
start of the line where the matching keyword appears.
Example: EnforcedStyleAlignWith: keyword (default)
# bad
variable = if true
end
# good
variable = if true
end
Example: EnforcedStyleAlignWith: variable
# bad
variable = if true
end
# good
variable = if true
end
Example: EnforcedStyleAlignWith: startofline
# bad
variable = if true
end
# good
puts(if true
end)
Add parentheses to nested method call NArray.zeros sigma.shape
. Open
g_log_sigma = popsize.times.inject(NArray.zeros sigma.shape) do |sum, i|
- Read upRead up
- Exclude checks
This cop checks for unparenthesized method calls in the argument list of a parenthesized method call.
Example:
# good
method1(method2(arg), method3(arg))
# bad
method1(method2 arg, method3, arg)
Indent when
as deep as case
. Open
when Numeric
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Indent when
as deep as case
. Open
when Array
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Use nested module/class definitions instead of compact style. Open
module MachineLearningWorkbench::Optimizer::NaturalEvolutionStrategies
- Read upRead up
- Exclude checks
This cop checks the style of children definitions at classes and modules. Basically there are two different styles:
Example: EnforcedStyle: nested (default)
# good
# have each child on its own line
class Foo
class Bar
end
end
Example: EnforcedStyle: compact
# good
# combine definitions as much as possible
class Foo::Bar
end
The compact style is only forced for classes/modules with one child.
Use def with parentheses when there are parameters. Open
def train picks: sorted_inds
- Read upRead up
- Exclude checks
This cops checks for parentheses around the arguments in method definitions. Both instance and class/singleton methods are checked.
Example: EnforcedStyle: require_parentheses (default)
# The `require_parentheses` style requires method definitions
# to always use parentheses
# bad
def bar num1, num2
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
# good
def bar(num1, num2)
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
Example: EnforcedStyle: requirenoparentheses
# The `require_no_parentheses` style requires method definitions
# to never use parentheses
# bad
def bar(num1, num2)
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
# good
def bar num1, num2
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
Example: EnforcedStyle: requirenoparenthesesexceptmultiline
# The `require_no_parentheses_except_multiline` style prefers no
# parantheses when method definition arguments fit on single line,
# but prefers parantheses when arguments span multiple lines.
# bad
def bar(num1, num2)
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
# good
def bar num1, num2
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
Indent when
as deep as case
. Open
when NArray
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Indent when
as deep as case
. Open
when Range # initialize with random in range
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Prefer Object#is_a?
over Object#kind_of?
. Open
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
- Exclude checks
This cop enforces consistent use of Object#is_a?
or Object#kind_of?
.
Example: EnforcedStyle: is_a? (default)
# bad
var.kind_of?(Date)
var.kind_of?(Integer)
# good
var.is_a?(Date)
var.is_a?(Integer)
Example: EnforcedStyle: kind_of?
# bad
var.is_a?(Time)
var.is_a?(String)
# good
var.kind_of?(Time)
var.kind_of?(String)
Indent when
as deep as case
. Open
when NArray
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Prefer single-quoted strings when you don't need string interpolation or special symbols. Open
raise ArgumentError, "mu_init: `Range` start/end in `Float`s" \
- Read upRead up
- Exclude checks
Checks if uses of quotes match the configured preference.
Example: EnforcedStyle: single_quotes (default)
# bad
"No special symbols"
"No string interpolation"
"Just text"
# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"
Example: EnforcedStyle: double_quotes
# bad
'Just some text'
'No special chars or interpolation'
# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"
Indent when
as deep as case
. Open
when Array
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Indent when
as deep as case
. Open
when Numeric
- Read upRead up
- Exclude checks
This cop checks how the whens of a case expression are indented in relation to its case or end keyword.
It will register a separate offense for each misaligned when.
Example:
# If Layout/EndAlignment is set to keyword style (default)
# *case* and *end* should always be aligned to same depth,
# and therefore *when* should always be aligned to both -
# regardless of configuration.
# bad for all styles
case n
when 0
x * 2
else
y / 3
end
# good for all styles
case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: case (default)
# if EndAlignment is set to other style such as
# start_of_line (as shown below), then *when* alignment
# configuration does have an effect.
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Example: EnforcedStyle: end
# bad
a = case n
when 0
x * 2
else
y / 3
end
# good
a = case n
when 0
x * 2
else
y / 3
end
Ambiguous block operator. Parenthesize the method arguments if it's surely a block operator, or add a whitespace to the right of the &
if it should be a binary AND. Open
@mu, @log_sigma = data.map &:to_na
- Read upRead up
- Exclude checks
This cop checks for ambiguous operators in the first argument of a method invocation without parentheses.
Example:
# bad
# The `*` is interpreted as a splat operator but it could possibly be
# a `*` method invocation (i.e. `do_something.*(some_array)`).
do_something *some_array
Example:
# good
# With parentheses, there's no ambiguity.
do_something(*some_array)
Space missing after comma. Open
NArray.new([1,ndims]).fill mu_init
- Read upRead up
- Exclude checks
Checks for comma (,) not followed by some kind of space.
Example:
# bad
[1,2]
{ foo:bar,}
# good
[1, 2]
{ foo:bar, }
Prefer Object#is_a?
over Object#kind_of?
. Open
unless mu_init.first.kind_of?(Float) && mu_init.last.kind_of?(Float)
- Read upRead up
- Exclude checks
This cop enforces consistent use of Object#is_a?
or Object#kind_of?
.
Example: EnforcedStyle: is_a? (default)
# bad
var.kind_of?(Date)
var.kind_of?(Integer)
# good
var.is_a?(Date)
var.is_a?(Integer)
Example: EnforcedStyle: kind_of?
# bad
var.is_a?(Time)
var.is_a?(String)
# good
var.kind_of?(Time)
var.kind_of?(String)
Use def with parentheses when there are parameters. Open
def load data
- Read upRead up
- Exclude checks
This cops checks for parentheses around the arguments in method definitions. Both instance and class/singleton methods are checked.
Example: EnforcedStyle: require_parentheses (default)
# The `require_parentheses` style requires method definitions
# to always use parentheses
# bad
def bar num1, num2
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
# good
def bar(num1, num2)
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
Example: EnforcedStyle: requirenoparentheses
# The `require_no_parentheses` style requires method definitions
# to never use parentheses
# bad
def bar(num1, num2)
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
# good
def bar num1, num2
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
Example: EnforcedStyle: requirenoparenthesesexceptmultiline
# The `require_no_parentheses_except_multiline` style prefers no
# parantheses when method definition arguments fit on single line,
# but prefers parantheses when arguments span multiple lines.
# bad
def bar(num1, num2)
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
# good
def bar num1, num2
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
Line is too long. [82/80] Open
raise ArgumentError, "Something is wrong with sigma_init: #{sigma_init}"
- Exclude checks
Line is too long. [86/80] Open
# Works with the log of sigma to avoid continuous decompositions (thanks Sun Yi)
- Exclude checks
Use def with parentheses when there are parameters. Open
def initialize_distribution mu_init: 0, sigma_init: 1
- Read upRead up
- Exclude checks
This cops checks for parentheses around the arguments in method definitions. Both instance and class/singleton methods are checked.
Example: EnforcedStyle: require_parentheses (default)
# The `require_parentheses` style requires method definitions
# to always use parentheses
# bad
def bar num1, num2
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
# good
def bar(num1, num2)
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
Example: EnforcedStyle: requirenoparentheses
# The `require_no_parentheses` style requires method definitions
# to never use parentheses
# bad
def bar(num1, num2)
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end
# good
def bar num1, num2
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
Example: EnforcedStyle: requirenoparenthesesexceptmultiline
# The `require_no_parentheses_except_multiline` style prefers no
# parantheses when method definition arguments fit on single line,
# but prefers parantheses when arguments span multiple lines.
# bad
def bar(num1, num2)
num1 + num2
end
def foo descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name
do_something
end
# good
def bar num1, num2
num1 + num2
end
def foo(descriptive_var_name,
another_descriptive_var_name,
last_descriptive_var_name)
do_something
end