A.42 library(prolog_versions): Demand specific (Prolog) versions
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The SWI-Prolog library
library(prolog_versions): Demand specific (Prolog) versions
require_prolog_version/2
require_version/3
cmp_versions/3
Packages
Availability:
:- use_module(
library(prolog_versions)
).
(can be autoloaded)
[det]
require_version
(
+Component, +Available, +CmpRequired
)
Require
Component
to have version
CmpRequired
, while
Component
is know to have version
Available
.
Errors
version_error(Component, Required, Cmp, Available)