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Questions - fmt

Can't use std::format in c++20

I've been trying to use the std::format function included in C++20. As far as I can tell, clang 14 is supposed to support this feature, but for some reason I am receiving the following error: no membe...
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Saerynity

c++

clang++

fmt

Votes: 0

Answers: 2

Latest Answer

std::format is not complete in libc++ 14 so is disabled by default. You need to pass the LIBCXX_ENABLE_INCOMPLETE_FEATURES parameter when building llvm to enable the feature. You are probably better o...
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Alan Birtles

Generating simple format string at compile time

I'm trying to generate a simple format string for fmt at compile time, but I can't quite figure out the string concatenation. I'm limited to c++ 14. What I'd like is to be able to generate a format s...
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Rob W.

c++

string

c++14

fmt

Votes: 0

Answers: 1

Latest Answer

You have several typos (and a concat limited to 2 argument). template<int...I> using is = std::integer_sequence<int,I...>; template<int N> using make_is = std::make_integer_se...
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Jarod42

Is there a way to perform operations on a file opened with fopenf using stream operators?

I have a large C++ codebase that opens various files using the fopenf command (returning a FILE*), and performs operations throughout the code such as writing to and reading from the files using fputc...
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wand_swe

c++

fmt

Votes: 0

Answers: 1

Latest Answer

Is there a stop-gap way that I could temporarily get the code to run by writing to the file opened with the fopenf command using the stream operators? That would require you to implement your own (o...
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Remy Lebeau

Specializing formatting for pointer to class

I need to provide format-magic to a class hierarchy and usually those things are passed around via pointer. This example here works currently on master: #include <type_traits> #include <sstre...
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Roland Lei&#223;a

fmt

Votes: 0

Answers: 1

Latest Answer

This is definitely a regression. Supporting a hierarchy of classes can be done as documented in https://fmt.dev/latest/api.html#formatting-user-defined-types using references instead of pointers: #inc...
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vitaut

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