Ramda By Example, Lesson 1

I've recently started using Ramda, the functional programming library. Here's what I've learned.

[andrewjarrett]

I'm wondering if using regex might be a better solution than hardcoding a GROUP_LEN index?

[ketankshukla]

I need therapy after watching this video. Wasted 20 years of my life doing object oriented programming. This shit is AWESOME!

[henriqueferreira]

Did ramda R.chain changed? I had to switch from: (on 3:37 min)
const addLabel = R.chain(R.append, R.head); // this fixed the error I got

[DiegoHaz]

That's awesome, but seems pretty much "write once, never read"

[jean-francoisbouzereau]

The problem with functional programming is that in real life projects it often builds complex structures that are very difficult to read back. The same happens with regular expressions, you can write them but you cannot read them easily. Long time ago the APL language had the same characteristics. You could write very sophisticated programs in just one line of symbols, but it was a real challenge to understand them afterwards.

[qonf]

Nice, but i don't see the advantage over using native functionality, where it can be done completely functional:

Object.entries({
'group1-perm1': true,
'group1-perm2': false,
'group2-perm1': false,
'group2-perm2': true,
'perm3': true,
'perm4': false,
})
.reduce((obj, entry) => {
const [key, checked] = entry;
const substrings = key.split('-');
const [group, perm] = substrings[1] ?
substrings : ['general', substrings[0]];
const list = obj[group] || []
return {...obj, [group]: list.concat({ value: key, checked, label: perm }) };
}, {});

[MrPlaiedes]

Any reason why you chose to throw Ramda functions into global over destructuring the functions you needed?

[andreacappuccio]

=> { value: p, checked: !!permissions[p], label: p.replace(/group[0-9]-/, '') });

So what was the need for Ramda here? Genuinely curious.