Use this tag when question related to unused variables issues as warnings
Questions tagged [unused-variables]
179 questions
-1
votes
1 answer
Unused variable outside of a for-loop in Go
I can't compile the following Go code. I keep getting an error that variable 'header' is not used. I'm trying to read and process a CSV file. The file is read line by line an so I need to save the header into a "outside-the-loop" variable I can…
michal-ko
- 397
- 4
- 12
-1
votes
1 answer
How to find unused variables in a Makefile
I'm maintaining a Makefile for a project, which contains many variable declarations:
DOCKER_IMAGE_VERSION := latest
DOCKER_EXPOSE_PORT := 8080
PIP := python -m pip
...
Sometimes the lines using these variables are deleted, and these declarations…
Adam Matan
- 128,757
- 147
- 397
- 562
-1
votes
1 answer
Values in if-else
I have directions for a programming assignment that says, all within a conditional, I need to prompt the user 7 times for their scores [hi,med,low]. I need to be able to use these values later so naturally I assigned them all to a value to be able…
Jake
- 1
-1
votes
2 answers
How can I discard both of an argument and a local variable in the same scope?
My current code seems like this:
// for given methods like these:
// void Foo(Action action)
// async Task DoAsync()
Foo(unusedInt =>
{
var unusedTask = DoAsync();
});
I know I can use the discard variable(_) since C#7.0, like this:
Foo(_…
ALittleDiff
- 1,191
- 1
- 7
- 24
-1
votes
1 answer
error: unused variable (struct)
error: unused variable 'part2' [-Werror,-Wunused-variable]
The error occurs only for part2 even though it's been initialized as well, just in a different manner. Is it just a compiler issue ?
int main(void)
{
struct complex
{
int…
callmeanythingyouwant
- 1,789
- 4
- 15
- 40
-1
votes
2 answers
Getting errors of "unused variable" and "undeclared identifier" in simple function I am trying to write in C and I can't understand why
So I am writing a cipher program as part of the Harvard CS50 course and I have this code to check if a character + the cipher key will put it out of ASCII alphabetical range and to loop it back around if it does (as well as preserving case). The…
-1
votes
1 answer
Warning: Wunused-but-set-variable
I receive this warning when compiling my program.
In member function 'bool CClientManager::InitializeMobTable()':
warning: variable 'isNameFile' set but not used [-Wunused-but-set-variable]
bool isNameFile = true;
^
Here is the relevant part…
Freaksy
- 41
- 1
- 4
-1
votes
2 answers
"Unused variable" in xcode
I receive the error "Unused variable 'placesList'" when I write the following:
PlacesList *placesList = [[PlacesList alloc] initWithNibName:@"PlacesList" bundle:nil];
What am I doing wrong? How can I fix it?
I am new and inexperienced with coding…
Luke Curran
- 77
- 10
-2
votes
1 answer
Go believes variables inside conditional statements are unused?
I have a situation where if something fails to assign a variable I instead assign it within a conditional statement however Go seems to think this variable is unused.
for index, value := range group.Values {
timestamp, err :=…
Grant Curell
- 1,321
- 2
- 16
- 32
-2
votes
1 answer
Unused local variable false positive
While using sonar lint version 6.3.0.39716, it reports the following variable as unused.
void read() throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String s; // unused local…
BeastMaster64
- 147
- 1
- 13
-2
votes
2 answers
How to prevent getting warning of unused variable implementation of an abstract class
I have an abstract class which has an event (abstract). I do not need actually this event in my implementation. When I dont use it in my implementation, it gives well warning, which I dont want to have..
Is there any c# predefine annotation like…
Wolfgang
- 91
- 6
-2
votes
3 answers
statement with no effect for-loop C
I got this for-loop:
for(int k=4;k<0;k--){
if(k == 0){
test[k] = 5;
break;
}
else{
test[k] = test[k-1];
}
}
it should shift the elements of the array to the right, but nothing happens.
To my knowledge it…
Tomas0206
- 77
- 1
- 7
-3
votes
0 answers
vscode is broken with unity
enter image description here
Can someone explain it to me ? what is happening here there is no parameter in that method
and the unity specific methods are also shown as unused by the analyzer
i did not make any update and such and i did try…
-3
votes
1 answer
Detect and flag unused JS variables
I'm currently using JSHint and JSCS (javascript code style checker) but none of them can detect this kind of unused variables:
describe('XX', function () {
var XXunused;
beforeEach(inject(function ($injector) {
XXunused =…
ernestoalejo
- 853
- 1
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