django: avoid "Unused variable" warning on get_or_create
Tag : python , By : Vijayant Singh
Date : March 29 2020, 07:55 AM
Hope that helps Is there a way to avoid "Unused variable" warning on get_or_create method? , One “standard” way of doing this is to use the _ variable: level, _ = Level.objects.get_or_create(…)
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How does scoped_lock avoid emitting an "unused variable" warning?
Date : March 29 2020, 07:55 AM
should help you out Note that the question has changed since the other answers were written.
Likely the reason g++ doesn't warn in the current form is because mst is a reference, and constructing and destructing a reference has no side effects. It's true that here the reference is extending the lifetime of a temporary, which has effects in its constructor and destructor, but apparently g++ doesn't realise that makes a difference.
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"error: 'xxx' undeclared" _and_ "error: unused variable 'xxx'" at the same time, in the same file
Date : March 29 2020, 07:55 AM
Does that help I have a really weird compilation problem with JNI and don't know how to solve it at all... , jmsg and jsmg are two different things.
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Ignore "Unused Entity Issue: Unused Variable" in a single file
Date : March 29 2020, 07:55 AM
this one helps. You can turn off specfic warnings in Clang using a pragma directive and the "diagnostic" keyword, like so: #pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-variable"
// Insert code here
#pragma clang diagnostic pop
__attribute__((unused))
NSString * thisStringIsJustForFun = @"It's only work if somebody makes you do it.";
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Avoid React "no-unused-vars" error with loop
Date : March 29 2020, 07:55 AM
Any of those help You're using a for-in loop over an array, without using the enumerable keys (indices). You should use Array#forEach instead, and since it accepts a callback, you can just omit any arguments: myArray.forEach(() => { // No callback args
newArray.push({
var1: someFunctionValue(),
var2: anotherFunctionValue()
});
});
const newArray = myArray.map(() => ({
var1: someFunctionValue(),
var2: anotherFunctionValue(),
}));
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