I have Avoid redundant argument values. warning in my code, and it is okay for that moment. Is there any #ignore option in dart for that?
DON'T pass an argument that matches the corresponding parameter's default value.
Related
I want to define an "expect_failure" boolean attribute for a bazel rule set that I'm devising, so I can properly write tests for my tool chain. However:
ERROR: /blah/blah.bzl:7:26: cannot add attribute: There is already a built-in attribute 'expect_failure' which cannot be overridden.
I can't find documentation for this "built-in attribute" anywhere. When I attempt to make use of this built in attribute, I find that it is of type "string" rather than "bool" which maybe implies some nuance to its implementation. When I attempt to naively use it by defining "expect_failure" to be the string "True", I see an unexpected error message:
ERROR: /blah/blah/BUILD:159:21: in _verilog_test rule //blah/blah:blah-test: Expected failure not found: True
Can anyone illuminate correct use of the built-in "expect_failure" attribute for me?
expect_failure is use for analysis test framework. It depends on analysistest, and use to verify that a rule fails given certain inputs or in certain state.
Here is the docs
I have written a simple function named is_zero in Erlang which checks if the argument to the function is zero. The code is as follows.
-module(match).
-export([is_zero/1]).
% defining a function named is_zero
% this is a function with two clauses
% these clauses are matched sequentially
is_zero(0) ->
true;
is_zero(X) ->
false.
As I try to compile the code using c(match).(the file is also named as match.erl) it returns a warning saying variable "X" is unused.
If I run is_zero(0). in spite of the warning, the shell throws an exception error saying undefined shell command is_zero/1
What am I doing wrong?
I cannot think of any rectification neither can I find any advice that will help.
Functions in Erlang are defined inside modules. To distinguish functions from different modules, you need to prepend the module name to a function. In this case, you need to run match:is_zero(0). Instead of just is_zero(0)..
To avoid the warning saying variable "X" is unused, use the underscore variable:
is_zero(_) ->
false.
Note that variable names can be useful even if unused, to improve readability. If you want to name your variable and still avoid the compiler warning, prepend the underscore to the name:
is_zero(_Num) ->
false.
I read the other related errors and I have been unable to fix my problem
Please help me!
It is the common Expected expression in list of expression error.
Furthermore, I want to know if my error is connected to appdelegate.swift file.
Change
selector(MPCBrowser.requestFoundPeers(_:))
to:
#selector(MPCBrowser.requestFoundPeers(_:))
You forgot the # symbol that precedes selector in #selector.
I have a generator called with yo generator:module [ModuleName] .
I want to handle the error when ModuleName argument is undefined and still be able to use generator:module --help without arguments.
First, you'll need to make the arguments non required.
Then if the argument was not provided, handle the case yourself as you see fit.
Sometimes Idea cannot evaluate Groovy expression and rises an error: java.lang.IllegalArgumentException : Invalid method. You can check it on the screen - experiment variable exists and it should be displayed...
What's the problem and how can it be solved?
I think that problem can be in your object toString metod which deguger uses.