boost mpl string

Question

Hi in boost mpl documentation I have discovered mpl::string and the following example:

typedef mpl::string<'hell','o wo','rld'> hello;

I'm a little bit surprised because I thought that in C or C++ we can't have more than one character between the character ' ?

Is it normal and valid ?

Just ab FYI. This (http://cpp-next.com/archive/2012/10/using-strings-in-c-template-metaprograms/) article has a better solution if you have c++11 available. — KitsuneYMG, Jan 30 '13 at 15:17

score 11 · Accepted Answer · answered Apr 25 '11 at 11:07

11

Yes, it is valid C++. From any existing C++ standard, section [lex.conn]:

An ordinary character literal that contains more than one c-char is a multicharacter literal. A multicharacter literal has type int and implementation-defined value.

answered Apr 25 '11 at 11:07

Yakov Galka

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oh well that's why we can't have 5 characters between ' – Guillaume Paris Apr 25 '11 at 11:12

boost mpl string

1 Answers1