void Questions
3
Solved
In TypeScript, you can annotate a function as returning void:
function fn1(): void {
// OK
}
function fn2(): void {
// Error
return 3;
}
You can also annotate a function to return undefined:...
Kingdon asked 15/11, 2019 at 22:27
5
Solved
I wrote this simple class in java just for testing some of its features.
public class class1 {
public static Integer value=0;
public class1() {
da();
}
public int da() {
class1.value=class1....
Virulence asked 25/7, 2014 at 20:9
7
Solved
In API
"The Void class is an uninstantiable placeholder class to hold a
reference to the Class object representing the Java keyword void."
What is "uninstantiable" place holder class? When w...
10
Solved
What does the following mean :
int main(void) {...}
VS
int main() {...}
?
I think that int main() {...} means that main doesn't receive any parameters (from command line) , however:
int main(int...
Mcandrew asked 1/9, 2012 at 5:30
6
Solved
how can I convert any object of my own class convert into pointer to void?
MyClass obj;
(void*)obj; // Fail
10
Solved
int fn();
void whatever()
{
(void) fn();
}
Is there any reason for casting an unused return value to void, or am I right in thinking it's a complete waste of time?
5
Solved
Is there any way to force an exhaustive check of all enum values when the switch branches call methods with void return type? It's quite ugly to hard-code a yield just to coax the compiler to deman...
Rainbolt asked 15/2, 2021 at 7:56
1
Go introduced generics in version 1.18. I just downloaded the latest beta version to test this major new feature.
Consider the code below:
package main
import "fmt"
func Demo1(n int) in...
1
Solved
C2x, 6.5.3.2 Address and indirection operators, Constraints, 2:
The operand of the unary * operator shall have pointer type.
Why there is no constraint "the operand shall not be a pointer to...
Flavor asked 7/2, 2022 at 16:34
4
Solved
My experience is in C-based languages (C, C++, Java, C#) where the return type of a function can be void, i.e no return. But in Ruby, it appears that every function returns something. I was wonderi...
Garcon asked 9/3, 2013 at 9:33
1
Solved
Why this code:
extern void x;
leads to:
$ cl t555.c /std:c11 /Za
t555.c(1): error C2182: 'x': illegal use of type 'void'
What is illegal here?
UPD. Use case:
$ cat t555a.c t555.p.S
#include <s...
Said asked 1/2, 2022 at 23:20
11
Solved
How to mock methods with void return type?
I implemented an observer pattern but I can't mock it with Mockito because I don't know how.
And I tried to find an example on the Internet but didn't ...
Tenney asked 16/2, 2010 at 20:54
3
Solved
I think that typescript has many unobvious places, making it not strict and not correct.
I want use undefined as functions return type. Because in reality it is undefined, not void or some other fi...
Hallah asked 12/1, 2021 at 20:19
2
Solved
I am having a strange issue on TypeScript. I recently learnt about void ... operator because I need to apply it so eslint wouldn't report no-floating-promises. However this particular snippet someh...
Spireme asked 10/1, 2022 at 8:59
4
Solved
I want to stub a repository class to test another class (Holder class) that has a repository. The repository interface supports CRUD operations, and has many methods, but my unit test on the Holder...
Azevedo asked 21/8, 2015 at 11:33
6
Solved
I have a function called:
void initializeJSP(string Experiment)
And in my MyJSP.h file I have:
2: void initializeJSP(string Experiment);
And when I compile I get this error:
MyJSP.h:2 erro...
4
Solved
I am getting this error: -
This expression has a type of 'void' so its value can't be used.
Try checking to see if you're using the correct API; there might be a function or call that returns void ...
1
I am learning about templates in C++, and came across an example where casting to void is used:
template<typename T>
auto func (T const& t) -> decltype( (void)(t.size()), T::size_type(...
4
Solved
I read this MSDN article:
Unit Type (F#)
...The unit type is a type that indicates the absence of a specific
value; the unit type has only a single value, which acts as a
placeholder when no ...
Gallfly asked 20/12, 2013 at 13:37
4
Solved
I saw some usage of (void*) in printf().
If I want to print a variable's address, can I do it like this:
int a = 19;
printf("%d", &a);
I think, &a is a's address which is just an integ...
1
So I want to create a Mono<Void> (or any Mono<SomeIgnorableType>) that actually emits an element.
Why? Because I actually want to run an effect, and the result just implies the effect w...
Neisa asked 25/3, 2021 at 21:6
7
Solved
In a recent question, someone mentioned that when printing a pointer value with printf, the caller must cast the pointer to void *, like so:
int *my_ptr = ....
printf("My pointer is: %p", (void *...
14
Solved
<a href="javascript:void(0)" id="loginlink">login</a>
I've seen such hrefs many times, but I don't know what exactly that means.
Thamora asked 18/8, 2009 at 5:20
1
Solved
My script exports some information from Sharepoint sites to a .CSV file.
# Enter Web Application URL
$WebAppURL="http://server"
# Enter Path to CSV-file
$CSVFilePath="Path"
$S...
Blakeslee asked 26/1, 2021 at 17:53
5
Solved
In my project I have a Settings form and a Main form.
I'm trying to call the Main form's MasterReset function from the Setting form, but nothing happens.
The Master form's Masterreset function look...
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