CString::Format 的替代方案?
在 VC6 中进行字符串格式化是否有更好的替代方法,在替换之前进行语法检查?
Is there any better alternative for doing string formatting in VC6, with syntax checking before substitution?
推荐答案
CString
为 printf
样式的格式提供了 Format
方法,但是这不是类型安全的.
CString
offers the Format
method for printf
-style formatting, but this isn't type-safe.
对于类型安全的字符串格式,您可以使用 std::stringstream
/std::wstringstream
或 Boost Format 库,尽管它们都适用于 C++ std::basic_string
类模板,而不是 MFC CString
类.我已经在 VC6 中成功使用了这两个.
For type-safe string formatting you could either use std::stringstream
/ std::wstringstream
or the Boost Format library, although these both work with the C++ std::basic_string
class template, and not the MFC CString
class. I've used both of these successfully in VC6.
Boost Format 很好,因为它允许您使用类似 printf
的语法,并且如果您提供的参数与格式字符串不匹配,则会抛出异常,而使用 C++ iostreams 进行字符串格式化往往使您的代码非常冗长.
Boost Format is nice because it allows you to use printf
-like syntax, and will throw an exception if the arguments you supply don't match the format string, whereas string formatting with C++ iostreams tends to make your code quite verbose.
请注意,您可以从 std::string
创建一个 CString
对象,如下所示:
Note that you can create a CString
object from a std::string
as follows:
std::string s;
CString str( s.c_str() );
我希望这会有所帮助!
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