daviddoji/CalculusWithJuliaNotes.jl
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use quarto, not Pluto to render pages

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jverzani
2022-07-24 16:38:24 -04:00
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CwJ/misc/quick_notes.jmd
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@@ -11,33 +11,12 @@ Julia can be used through the internet for free using the [mybinder.org](https:/
Just click on the `CalcululsWithJulia.ipynb` file after launching Binder by clicking on the badge. Binder provides the Jupyter interface.
These notes are written as Pluto HTML pages. Pluto is a notebook like alternative to Jupyter which is designed for interactive Julia usage using a *reactive model*. The HTML pages
an be downloaded and run as notebooks within Pluto. (They can also be run through binder, but that will be a disappointing experience due to limitations imposed by binder.)
Pluto will automatically handle the package management for add-on packages, though `Pluto` itself must be installed. In a terminal session, the following commands will install `Pluto`:
```julia; eval=false
import Pkg
Pkg.add("Pluto")
```
Installation happens once. Then each new *session*, `Pluto` must be loaded and run:
```julia; eval=false
using Pluto
Pluto.run()
```
`Pluto` notebooks run in a web browser, the above command will open a landing page in the default browser.
----
Here are some `Julia` usages to create calculus objects.
The `Julia` packages loaded below are all loaded when the `CalculusWithJulia` package is loaded.
@@ -84,8 +63,6 @@ f(x) = exp(x) * 2x
```
!!! note
We see in this notebook the use of `let` blocks, which is not typical with `Pluto`. As `Pluto` is reactive -- meaning changes in a variable propagate automatically to variables which reference the changed one -- a variable can only be used *once* per notebook at the top level. The `let` block, like a function body, introduces a separate scope for the binding so `Pluto` doesn't incorporate the binding in its reactive model. This is necessary as we have more than one function named `f`. This is unlike `begin` blocks, which are quite typical in `Pluto`. The `begin` blocks allow one or more commands to occur in a cell, as the design of `Pluto` is one object per cell.
* multi-statement functions are defined with the `function` keyword. The `end` statement ends the definition. The last evaluated command is returned. There is no need for explicit `return` statement, though it can be useful for control flow.