lib/MiqVm/test/rhevmNfsTest2.rb
Empty ensure
block detected. Open
Open
ensure
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Checks for empty ensure
blocks
Example:
# bad
def some_method
do_something
ensure
end
Example:
# bad
begin
do_something
ensure
end
Example:
# good
def some_method
do_something
ensure
do_something_else
end
Example:
# good
begin
do_something
ensure
do_something_else
end
Useless assignment to variable - hardware
. Open
Open
hardware += "#{diskid}.filename = \"#{DISK_FILE}\"\n"
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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.
NOTE: Given the assignment foo = 1, bar = 2
, removing unused variables
can lead to a syntax error, so this case is not autocorrected.
Safety:
This cop's autocorrection is unsafe because removing assignment from
operator assignment can cause NameError if this assignment has been used to declare
local variable. For example, replacing a ||= 1
to a || 1
may cause
"undefined local variable or method `a' for main:Object (NameError)".
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end