Implementing a Note Application -

[ggirton]

I found the syntax in this part not explained. After the 1st curly brace It is going into javascript with notes.map, but then it goes back out when it hits the

list item? Not sure what's going on there, just thought I'd mention. The book is excellent so far, this is the 1st puzzling thing I hit. (Altho there were 6 deprecated packages you're using when I brought in the latest node. Well, things change :-) )

export default () => (

{notes.map(note =>
• {note.task}
)}

)

[bebraw]

You mean

export default () => (
  <ul>{notes.map(note =>
    <li key={note.id}>{note.task}</li>
  )}</ul>
)

right in the start? The curlies come from JSX. That's why I have those bullets right below the code example but I don't mind improving this. 👍

Good point about deprecations. I can fix some of that but not everything. It all moves so fast in the Node world.

[ggirton]

Thank you! By the way, I had a one-hour duration time looking up the following phrase

() =>

it is very hard to google for! (and not an idiom in the FB React docs, at least in the beginning)

Finally I found this summary which not only explained it, but also included the incredible humorous
"n goes to zero” example. Ha ha!

https://hacks.mozilla.org/2015/06/es6-in-depth-arrow-functions/

and also suggested Turing-related lambda function investigations. Wow!

Cheers!

On Jun 21, 2016, at 9:36 PM, Juho Vepsäläinen [email protected] wrote:

You mean

export default () =>
(
<
ul>{notes.map(note =>

{note.task}

)}</ul

)

right in the start? The curlies come from JSX. That's why I have those bullets right below the code example but I don't mind improving this. 👍

Good point about deprecations. I can fix some of that but not everything. It all moves so fast in the Node world.

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[bebraw]

By the way, I wrote a language feature appendix to cover these sort of questions. I probably should link there in the text.

[ggirton]

Yes, there were multiple references to it and, ha ha ha, finally I went there and started reading it :-) I don’t think you need to put in a link but mention “ This is an Arrow function explained in the appendix” … good to go :-)

On Jun 21, 2016, at 9:57 PM, Juho Vepsäläinen [email protected] wrote:

By the way, I wrote a language feature appendix to cover these sort of questions. I probably should link there in the text.

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