VERSION define(s)

[mark-99]

It would be useful if there was a #define for the version of the package. This would make it easier to transition client code across breaking changes, e.g. the 3.x changes to operator<< and exception types.

Just something like
#define NLOHMANN_JSON_VERSION 30102 // v3.1.2

Some people prefer to use hex, and some split into separate VERSION_MAJOR/MINOR/PATCH, whatever you want.

[nlohmann]

Related: #943

[mark-99]

Ah didn't see that.
However meta() is not useful here, you need to conditionally compile via #ifdef which can't be done with a runtime var.

[nlohmann]

I understand, and it is the second time within 3 days that someone is asking for this. I'll have a look.

[mark-99]

To illustrate, e.g.:

#if NLOHMANN_JSON_VERSION >= 30000
catch (const json::parse_error& ex)
#else
catch (const std::invalid_input& ex)
#endif
{ /*etc*/ }

[nlohmann]

@mark-99 Is e8bf1f6 satisfying your needs?

[mark-99]

Looks good.

…

On 31 Jan 2018, at 16:37, Niels Lohmann ***@***.***> wrote: @mark-99 Is e8bf1f6 satisfying your needs? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.