Re: Add lilypond version predicates/operators (issue 317270043 by address@hidden)

[dak]

On 2017/02/14 15:37:35, pwm wrote:
> On 2017/02/14 15:15:07, git wrote:
> > I like this more because it's more of a typical procedure
invocation.
> > I think I'll create a new patch with this and a simplified
calculate-version
> > (that doesn't accept string lists)

> Well, having the procedure as the first argument might be more
scheme-ish?

> Maybe best would be to have a "version-compare" function that compares
two
> version lists using a procedure.  Then define "ly:version?" so it
calls
> "version-compare" with the current LilyPond version (to handle the
primary use
> case).  The "version-compare" function could be David's looping
function, but
> modified so that it took two version lists and a procedure as
arguments.

It's not a "version-compare" as much as a "lexicographic-compare".

https://codereview.appspot.com/317270043/