< cpp | language
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Technical Specifications |
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#define QSTATICASSERTX(Condition, Message) staticassert(bool(Condition), Message) ^. And the signal (valueChanged) arguments was different from the slot (updateValue) arguments, this will make the compiler to try implicit conversion of the signal and slot arguments and you have one of 2 possibilities: 1. The compiler will try to make auto conversion (implicit.
Performs compile-time assertion checking
[edit]Syntax
static_assert ( bool_constexpr, message) | (since C++11) |
static_assert ( bool_constexpr) | (since C++17) |
[edit]Explanation
bool_constexpr | - | a contextually converted constant expression of type bool |
message | - | optional (since C++17)string literal that will appear as compiler error if bool_constexpr is false |
A static assert declaration may appear at namespace and block scope (as a block declaration) and inside a class body (as a member declaration)
Static Assertion Failed Signal And Slot Arguments Are Not Compatible In Minecraft
If bool_constexpr returns true, this declaration has no effect. Otherwise a compile-time error is issued, and the text of message, if any, is included in the diagnostic message.
message can be omitted. | (since C++17) |
[edit]Note
Since message has to be a string literal, it cannot contain dynamic information or even a constant expression that is not a string literal itself. In particular, it cannot contain the name of the template type argument.
[edit]Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
---|---|---|---|
CWG 2039 | C++11 | only the expression before conversion is required to be constant | the conversion must also be valid in a constant expression |
[edit]Example
Static Assertion Failed Signal And Slot Arguments Are Not Compatible Windows 10
Possible output:
[edit]See also
Static Assertion Failed Signal And Slot Arguments Are Not Compatible Iphone
C documentation for static_assert |
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