Better inline eval tutorial.

[yuxi-liu-wired]

Context

First, I think it's necessary to put this somewhere prominent in the tutorial. Tell the reader that if they want to inline a reference, they need to put this in the yaml. It took me an hour of searching just to notice that this is what we need.

mystnb:
    execution_mode: 'inline'

Considering that I switched to Jupyter Book specifically because I couldn't deal with the lack of inline reference in Jupyter Lab, and found Jupyter Book because of this pointer in https://discourse.jupyter.org/t/inline-variable-insertion-in-markdown/10525 , this feature really should be shown in the tutorial, perhaps putting this segment specifically into the "getting started" default project.

Next let's try some inline text reference.

```{code-cell}
def fibb(n):
    a, b = 0, 1
    for i in range(n):
        a, b = b, a + b
    return a
print(fibb(10))
fibb10 = fibb(10)
```

The 10th Fibonacci number is {eval}`fibb10`.

I also feel like it would be good if I can use inline evals, like instead of defining a temporary variable just to insert it into text, I would like it to be evaluated right at the point.

For example, it'd be cool if I can do this instead:

The 10th Fibonacci number is {eval}`fibb(10)`.

Proposal

No response

Tasks and updates

No response

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[agoose77]

Hi @yuxiliu1995, thanks for the feedback! Yes, we could make that aspect more obvious. We probably should error if we encounter evals in a non-Eval context.

We have added support for more general expressions, hidden behind a config flag. It will be released in the next version of myst-nb, which is coming soon.