错误 Exception(fmt::format(fmt, std::forward<Args>(args)...), code)error: ‘fmt’ is not a constant expression 40 | : Exception(fmt::format(fmt, std::forward<Args>(args)...), code) | ~~~^~~~ 简而言之就是format的str用fmt::runtime包装一下,让编译器不要把这个变量当做编译时常量...
Qt开发,从一个C#项目中搬过来一段代码,看上去很简单的逻辑,不过报错了: case value is not a constant expression 也就是switch case后面不支持变量,怎么解决呢?用常量当然可以,不过代码就变得不太友好了。 网上看到一条建议,很简单,不用switch case了,改用if else代替: if(unit==DT::UNIT_DEG){ if(gd>9...
plugin_use.dart 源代码: import 'package:flutter/material.dart'; import 'package:flutter_basics_mu_01/plugin_use.dart'; // void main() { // // runApp(const MyApp()); // runApp(PluginUse) // } void main() => runApp(PluginUse()); class MyApp extends StatelessWidget { const MyAp...
triggers error C7595: ‘std::source_location::current’: call to immediate function is not a constant expression, but newauto([] {returnstd::source_location::current(); }()); can compile. C++web View timeline by All Posts (4)Solutions & workarounds (0) ...
\.. \.. \example\example.cpp C:\Temp\spdlog\example\example.cpp(5): error C7595: 'a': call to immediate function is not a constant expression ninja: build stopped: subcommand failed. Build failed. Live at godbolt.ms This Bug makes it impossible to use the upcomming spdlog 2...
main.cpp:6:30: in 'constexpr' expansion of 'fmt::v8::basic_format_string<char, int&, int&>(f)' main.cpp:6:37: error: 'f' is not a constant expression 6 | const auto bar = fmt::format(f, args...); | ~~~^~~~ Why?Contributor vitaut commented ...
如果打开注释的那一块代码会报一个错误提醒Expression is not an integer constant expression GlogConfig.h中声明的pram(extern NSInteger const pram;)对外是一个全局不可变的一个变量. 我们在GlogConfig.m中对pram进行了初始值进行定义(const NSInteger pram = 0x11;),这里parm是一个局部常量不可变的. ...
The following code: switch((int) getType()) { case (int) A_TYPE: // ... case ((int) B_TYPE): // ... } does not work. I get the error: case value is not a constant expression. Sourcetrail does not understand the C-cast in the case stateme...
针对你遇到的错误信息 "the value of ‘nrdims’ is not usable in a constant expression",我们可以按照以下步骤来分析和解决问题: 1. 理解错误信息 错误信息表明,在代码中有一个地方需要使用常量表达式,但是变量 nrdims 的值无法在这个上下文中作为常量表达式使用。常量表达式是指在编译时就能确定其值的表达式,而...
If you set the value of the constant in the .m, it is not visible by other translation units that only include the .h file. The value of the constant must be known at compile time to be able to be used in a case within a switch. ...