Functions to convert string to number

[ludekvodicka]

Because Inja now offers several useful function it would be great to add also functions to convert string to number.

I currently have these functions named double(x) and integer(x) with following test

nlohmann::json data;
data["val1"] = "5";
data["val2"] = "-5";

InjaStringType res = inja::render("{%if integer(val1) >= 0%}yes{%else%}no{%endif%}", data);
TEST_CHECK_EQUAL(res, "yes");

res = inja::render("{%if integer(val1) < 0%}yes{%else%}no{%endif%}", data);
TEST_CHECK_EQUAL(res, "no");

res = inja::render("{%if double(val2) >= 0%}yes{%else%}no{%endif%}", data);
TEST_CHECK_EQUAL(res, "no");

res = inja::render("{%if double(val2) < 0%}yes{%else%}no{%endif%}", data);
TEST_CHECK_EQUAL(res, "yes");

Are you interested in such PR?

[pantor]

Already done!

[ludekvodicka]

Thanks!