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Questions tagged [specifier]

59 questions
135
votes
14 answers

Should I use an exception specifier in C++?

In C++, you can specify that a function may or may not throw an exception by using an exception specifier. For example: void foo() throw(); // guaranteed not to throw an exception void bar() throw(int); // may throw an exception of type int void…
1800 INFORMATION
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'static volatile' vs. 'static' vs. 'volatile' in C

What's the difference between using the variable specifiers static volatile combined? Or using one alone; like static or volatile in microcontroller programming?
R1S8K
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2 answers

C++11 standard ref for allowed type definitions in type specifier uses?

In C++11 a type specifier includes class specifiers and enum specifiers. (aka class definitions and enumeration definitions) According to the grammar/syntax - type specifiers can appear in several places in the language, but not in all those places…
Andrew Tomazos
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3 answers

Swiftui specify double format

Text("Värde \(Double(calc2, specifier: "%.2f").rounded())") //ERROR I am converting a Slider value that uses a double type, but i cant format specify it? I get an error and xcode tells me to use signaling(?). I've tried putting it into an Int as…
oscar
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Should we provide a destructor with no-throw specifier?

namespace QuantLib { //! Base error class class Error : public std::exception { public: /*! The explicit use of this constructor is not advised. Use the QL_FAIL macro instead. */ Error(const…
q0987
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Error: C++ requires a type specifier for all declarations

I'm new to C++ and I've been reading this book. I read a few chapters and I thought of my own idea. I tried compiling the code below and I got the following error: ||=== Build: Debug in Password (compiler: GNU GCC Compiler) ===| …
Gigabillion
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C++ For what types can the parameter type name be the same as the parameter name with a type specifier?

This question is going to take a bit of explination, sorry. I am fixing an oversight in doxygen parsing some C++ code and I have come across an unusual corner case that doxygen doesn't account for. I have a fix but I want to make it more general so…
John Scipione
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Why does printf specifier format %n not work?

This is my code: #include int main(void) { int n; fprintf(stdout, "Hello%n World\n", &n); fprintf(stdout, "n: %d\n", n); return 0; } This is my output: Hellon: 0 Why does the fprintf format specifier "%n" not work?…
Alessandro Avolio
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error C3646: 'closure' : unknown override specifier

I got the following error: error C3646: 'closure' : unknown override specifier The code: void BaseOperator::mousebutton_cb(EventObject* sender, EventArgs* calldata, void* closure) { xd3D::Operation::Operator::BaseOperator* operator =…
Spectral
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How would I write my own new format specifier in C?

Is it possible to write a new format specifier in C? For example, let's say, %g is a format specifier which prints the ip address in A.B.C.D format from the unsigned integer equivalent. int ip_addr = Some integer printf("ip address = %g",…
Abhishek Sagar
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Reading character with scanf()

This code is for game of craps. #include #include #include #include int roll_dice(void); bool play_game(void); int main() { int i, ch,win = 0,lose = 0; bool flag; srand((unsigned)time(NULL)); …
haccks
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Python: Want to use a string as a slice specifier

Suppose I have a variable S with the string "1:3" (or for that matter, "1", or "1:" or ":3") and I want to use that as a slice specifier on list L. You cannot simply do L[S] since the required args for a slice are "int:int". Now, I current have some…
staggart
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Question regarding C argument promotions

Alright actually I've study about how to use looping to make my code more efficient so that I could use a particular block of code that should be repeated without typing it over and over again, and after attempted to use what I've learn so far to…
caramel1995
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Missing Type Specifier - Int Assumed in C++

These second line of these is throwing this error, but I'm not sure why. std::vector weapons(100); weapons[3] = "Rusty dagger"; -- Here's my entire file: //global variables #ifndef _GLOBAL_ #define _GLOBAL_ #include #include…
pighead10
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Open android intent using a specific application(package name known)

My problem is that I have an intent such as this one. Intent intent = new Intent(MediaStore.INTENT_ACTION_MEDIA_PLAY_FROM_SEARCH); intent.putExtra(MediaStore.EXTRA_MEDIA_FOCUS, MediaStore.Audio.Artists.ENTRY_CONTENT_TYPE); …
KISHORE_ZE
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