How to avoid "unused variable in a for loop" error

How to avoid "unused variable in a for loop" error

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How to avoid "unused variable in a for loop" error
Tag : development , By : Santhanam
Date : November 25 2020, 03:01 PM

may help you . You don't need to assign anything, just use for range, like this (on play)
package main

import (

func main() {
    ticker := time.NewTicker(time.Millisecond * 500)
    go func() {
        for range ticker.C {
    time.Sleep(time.Second * 2)


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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(…)

How does scoped_lock avoid emitting an "unused variable" warning?

Tag : cpp , By : ikey
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.

"error: 'xxx' undeclared" _and_ "error: unused variable 'xxx'" at the same time, in the same file

Tag : c , By : JackIT
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.

Ignore "Unused Entity Issue: Unused Variable" in a single file

Tag : objective-c , By : Chris Hanley
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
NSString * thisStringIsJustForFun = @"It's only work if somebody makes you do it.";

Avoid React "no-unused-vars" error with loop

Tag : javascript , By : cmhudson
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
    var1: someFunctionValue(),
    var2: anotherFunctionValue()
const newArray = myArray.map(() => ({
  var1: someFunctionValue(),
  var2: anotherFunctionValue(),
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