The JuMP team is happy to announce the release of JuMP 0.13.
This is the most visible JuMP release in quite a while since *all of JuMP's
macros and most exported methods have been renamed* to avoid the camelCase
convention. The original naming scheme was put in place before the 0.1
release of Julia and was never updated after the Julia community converged
to its current naming conventions. We don't take this change lightly since
it will require an update of all existing JuMP code, but we believe that
now, before a JuMP 1.0 release, is the best time to take these steps to
correct previous decisions so that we can continue to grow and remain
visually appealing to new users. All of these changes are simple renamings,
and it is sufficient to perform a find and replace on existing code in
order to update it. We have put deprecation warnings in place so that *no
existing code should break after updating to JuMP 0.13*. We expect to leave
these deprecations in place for quite a while (at least 6 months) to
minimize the impact. For the definitive list of the new names, see our
deprecation
list
<https://github.com/JuliaOpt/JuMP.jl/blob/1e0228abc6f9e968d5c03f21d914f713bd7d334a/src/deprecated.jl#L30>
.
Here's a preview of the new names:
m = Model()
@variable(m, x >= 0)
@variable(m, y >= 0)
@objective(m, Max, 3x-2y)
@constraint(m, x+y <= 1)
@constraint(m, 2x+y <= 3)
status = solve(m)
@show getvalue(x)
Or, using the pretty block syntax:
m = Model()
@variables(m, begin
x >= 0
y >= 0
end)
@objective(m, Max, 3x-2y)
@constraints(m, begin
x+y <= 1
2x+y <= 3
end)
status = solve(m)
@show getvalue(x)
We request the help of the community to update existing code that may be
posted on the internet. If you've written a blog post, stackoverflow post,
public Jupyter notebook, or book(! <http://www.chkwon.net/julia/>)
containing JuMP code, please make an effort to update it to the new naming
scheme to avoid confusing new users.
I'd like to thank those who participated in the various discussions (here
<https://github.com/JuliaOpt/JuMP.jl/pull/726> and here
<https://github.com/JuliaOpt/JuMP.jl/pull/732>) which helped steer this
change in the right direction. While this release focused on simple
renaming, we may have some more interesting syntax changes or additions in
the next release, so keep an eye on the JuMP repository if you are
interested. For a more complete list of changes in this release, see the
NEWS <https://github.com/JuliaOpt/JuMP.jl/blob/master/NEWS.md> entry.
Miles, Iain, and Joey
