It has been said that software is truly successful when it begins to be used for things that the implementors never expected.
One kind of Muq package is the library: A package of canned functionality intended to be used by other Muq packages.
It is possible to take advantage of libraries simply by
accessing their exported functions via colon syntax as
lib-y:fn-b and so forth, but such
use of package-name prefixes can be wearisome if the library
functions are frequently used.
An alternative is to do
This permanently enters package
@$s.package$s.usedPackages, making all exported symbols in
lib-y available inside the current package just as
though they were internal.
This does mean, of course, that the current package must not
have any symbols with the same name as an exported symbol in
lib-y, nor may
lib-y have any exported symbol
with the same name as any other exported symbol in any other
package already used by the current package.
unusePackage function may be used to undo the
effect of an
usePackage: See section `unusePackage' in Muf Reference.
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