The Julia Language

This doesn't seem right:

julia> println.(stdout, [1,2,3])
ERROR: MethodError: no method matching length(::Base.TTY)
Closest candidates are:
  length(::Union{Base.KeySet, Base.ValueIterator}) at abstractdict.jl:58
  length(::Union{LinearAlgebra.Adjoint{T, S}, LinearAlgebra.Transpose{T, S}} where {T, S}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.6/Li

In recent versions (can't say from exactly when), there seems to be an off-by-one error in dcc.DatePickerRange. I set max_date_allowed = datetime.today().date(), but in the calendar, yesterday is the maximum date allowed. I see it in my apps, and it is also present in the first example on the DatePickerRange documentation page.

E

Currently, publish_to_js returns a string value. However, HypertextLiteral (and other display systems) don't know that the object is actually properly formatted JavaScript. Consider returning a JavaScript value instead, much like HTML. This approach would then let you test if an object is showable as text/javascript if one implements `Base.show(io::IO, ::MIME"text/javascript", js::Jav

The same user as #2662 asked for ways to solve a collection of problems over a set of parameters. We don't have a good way of doing this in JuMP (we have @NLparameter, but not @parameter), but it could be scripted using the modification API (or even just rebuilding the problem).

We should write a tutorial with the different approaches. Here's their suggestion:

![image](https://user-image

Details

(This is related to JuliaPlots/Plots.jl#1706)

For example scatter(skipmissing([1.0, 2.0, missing, 1.0])) fails with Cannot convert Base.SkipMissing{Vector{Union{Missing, Float64}}} to series data for plotting.

Generally skipmissing is not required but it seems odd to see this fail.

Also I stumbled on this while trying to make a histogram, e.g.

I found that function mod2pi is not implemented yet, but mod works. Is there any list of implemented functions? Minimal working example is:

using Zygote

# This is working
gradient(x -> mod(x, 2pi), 1.)

# This is not
gradient(x -> mod2pi(x), 1.)

The following code gives a segfault with Makie 0.15 and Julia 1.6.1 (also reproduced with 1.7-beta2):

using Makie

xs = range(150, 160, length=100)
ys = range(7, 9, length=100)
points = [(x, y, 0.0) for x in xs for y in ys]
x, y, z = map(i -> getindex.(points, i), 1:3)

flags = (153 .< x .< 153.5) .& (7 .< y .< 7.3)
surface(y[flags], x[flags], z[flags]);

Starting Julia

In Exercises 10.1, the outer product in Take the outer product of a vector v with itself and assign it to variable cross_v should be cross product.

The basics of DiscreteSystem exists now, but the little details around it need to be finished.