implement get_tmp_cache

[ranocha]

This function is required for some interoperability with Trixi.jl.

CC @jmbender

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@@           Coverage Diff           @@
##             main     #113   +/-   ##
=======================================
  Coverage   98.09%   98.09%           
=======================================
  Files           6        6           
  Lines        1414     1420    +6     
=======================================
+ Hits         1387     1393    +6     
  Misses         27       27           

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[ranocha]

Do you understand the error below, @SKopecz?

┌ Error: failed to run `@example` block in src/index.md:173-178
│ ```@example SIR
│ using Plots
│ 
│ plot(sol, label = ["S" "I" "R"], legend=:right)
│ plot!(sol, idxs = ((t, S, I, R) -> (t, S + I + R), 0, 1, 2, 3), label = "S+I+R") #Plot S+I+R over time.
│ ```
│   exception =
│    Incorrect specification of `idxs`

I have not changed this part of the docs and it worked before...

[JoshuaLampert]

Do you understand the error below

I'm not sure, but I could imagine this comes from SciML/SciMLBase.jl#645.

[JoshuaLampert]

You could test that by forcing [email protected].

[ranocha]

Good idea. It's running in #114

[ranocha]

Yes, that's the issue: SciML/SciMLBase.jl#746

[ranocha]

Re-running CI so that we can check the results with the latest version of SciML including a bug fix.

[ranocha]

No, didn't help...

[SKopecz]

I'd suggest to discard the line plot!(sol, idxs = ((t, S, I, R) -> (t, S + I + R), 0, 1, 2, 3), label = "S+I+R") in the docs. I find the syntax idxs = ((t, S, I, R) -> (t, S + I + R), 0, 1, 2, 3) rather cumbersome. Instead we could use something like

plot!(sol.t,sum.(sol.u), label = "S+I+R")

[ranocha]

I'd suggest to discard the line plot!(sol, idxs = ((t, S, I, R) -> (t, S + I + R), 0, 1, 2, 3), label = "S+I+R") in the docs. I find the syntax idxs = ((t, S, I, R) -> (t, S + I + R), 0, 1, 2, 3) rather cumbersome. Instead we could use something like

plot!(sol.t,sum.(sol.u), label = "S+I+R")

Done in 787d8a5