String Template

CLUE provides a light-weight string template engine, by the class stemplate.

This template engine uses {{ name }} to indicate the terms to be interpolated, and accepts a dictionary-like object for interpolation.

clue::stemplate st("{{a}} + {{b}} = {{c}}");

std::unordered_map<std::string, int> dct;
dct["a"] = 123;
dct["b"] = 456;
dct["c"] = 579;

std::cout << st.with(dct);  // directly write to the output stream
st.with(dct).str();         // return a rendered string

Note

Here, st.with(dct) returns a light-weight wrapper that maintains const references to both the template st and the value dictionary dct. When inserted to an output stream, the result is directly written to the output stream. One may also call the str() member function of the wrapper, which would return the rendered string, an object of class std::string.