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For me it was as simple as when I could start doing functional programming with javascript. I was so surprised, since I had learned the other way first that it

by Trufa 4y ago

For me it was as simple as when I could start doing functional programming with javascript. I was so surprised, since I had learned the other way first that it is actually easier to teach functional approaches with teenagers. arr.map(x => x2) was abundantly clearer than const newArr = [] for(let i, i < arr.length, i++) { newArr.push(arr[i]2) } And to be perfectly honest, I might have goofed the for loop.

carl_dr 4y ago
> I might have goofed the for loop. Yeah, you did! It should have used semi-colons. (And HN has lost the carets …) And I agree completely with you.
jansan 4y ago
The javascript array functions and arrow functions are a gift from heaven. And to be perfectly honest, I might have goofed the for loop. You did, the commas must be semicolons :)
- mikercampbell 4y ago
  Functional JavaScript has saved me so much. And I'm not talkin Ramda, just functional principles. I can't tell you how much time I spent chasing a bug when it was a date that was passed by reference. Rather than trying to keep track, I just return copies of arrays and objects and it's way easier. Even a simple ``` function yeppers(input) => ({...input, x: 7}) ``` (An overly simple example) has made things smoother.
- dopidopHN 4y ago
  I miss that ability to just pass whatever around easily in JS. Ok… it’s Footgun prone and callback hell is real. But I still try to obtain that in other more boring language.
joshxyz 4y ago
this is a huge milestone in my coding. i remember refactoring a bunch of my code as soon as i learned how to use map functions lol
Rapzid 4y ago
Something I've started doing along with the functional is fallback assignments and relying on Set operations to be idempotent. This can tidy up by removing a lot of excess conditionals at the cost of some extra operations that are actually VERY fast so in a most cases prob won't be a problem.
cercatrova 4y ago
Have you used fp-ts?

by Trufa 4y ago

carl_dr 4y ago

> I might have goofed the for loop. Yeah, you did! It should have used semi-colons. (And HN has lost the carets …) And I agree completely with you.

jansan 4y ago

The javascript array functions and arrow functions are a gift from heaven. And to be perfectly honest, I might have goofed the for loop. You did, the commas must be semicolons :)

mikercampbell 4y ago
Functional JavaScript has saved me so much. And I'm not talkin Ramda, just functional principles. I can't tell you how much time I spent chasing a bug when it was a date that was passed by reference. Rather than trying to keep track, I just return copies of arrays and objects and it's way easier. Even a simple ``` function yeppers(input) => ({...input, x: 7}) ``` (An overly simple example) has made things smoother.
dopidopHN 4y ago
I miss that ability to just pass whatever around easily in JS. Ok… it’s Footgun prone and callback hell is real. But I still try to obtain that in other more boring language.

joshxyz 4y ago

this is a huge milestone in my coding. i remember refactoring a bunch of my code as soon as i learned how to use map functions lol

Rapzid 4y ago

Something I've started doing along with the functional is fallback assignments and relying on Set operations to be idempotent. This can tidy up by removing a lot of excess conditionals at the cost of some extra operations that are actually VERY fast so in a most cases prob won't be a problem.

cercatrova 4y ago

Have you used fp-ts?