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Questions - conditional-operator

Ternary Operator (?:) based assignment avoids type check in C

I am not able to understand why the compiler doesn't warn when assigning incompatible pointers through (?:) but does warn on direct assignment. Compiler warns in this case: test.c: In function ‘main’...
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Rajnesh

c

gcc

implicit-conversion

conditional-operator

void-pointers

Votes: 0

Answers: 2

Latest Answer

The type of the expression (b >= 8) ? array : malloc(8) is void* (because malloc(8) has the type void*). You can see this by doing something non-sensical and having the compiler tell you: ((b >=...
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Kevin

Enable/Disable checkBox based on combobox value with ternary operator

I'm trying to enable checkbox based on comboxbox selection. I am aware that with simple if condtion can solve my problem but when i change it to ternary operator it shows error if (ComboBox.SelectedV...
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pratap

c#

winforms

conditional-operator

Votes: 0

Answers: 1

Latest Answer

Your ternary syntax is incorrect. It should be like this instead: chkbox.Enabled = ComboBox.SelectedValue == enum.value ? false : true; You could also write it like this: chkbox.Enabled = ComboBox.Se...
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Jákup

Can I assign and return without a utility routine?

Is there a way to "assign and return" without creating a utility routine? Here's my code: static int& do_work_(const int* p, int& result) { result = (*p) * 10; return result; ...
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Jack Brown

c++

reference

return

conditional-operator

assignment-operator

Votes: 0

Answers: 1

Latest Answer

If you want to return the result of an assignment operation you can (in most cases) do so without a 'utility' function like your assign, because the assignment expression itself has a value; from cppr...
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Adrian Mole

Ternary operator return nothing

is there a way to return nothing for ternary operator I mean const a = [ 0 ? { name : "example" } : null ] when i print a = [null] or: const a = [ 0 && {name:"example"}] ...
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Berkay Bozkurt

javascript

conditional-operator

Votes: 0

Answers: 3

Latest Answer

You could spread an (empty) array. console.log([...(0 ? [{ name : "example" }] : [])]); console.log([...(1 ? [{ name : "example" }] : [])]);
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Nina Scholz

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