Mastodawn

Wolfram wants peace #SEORank Jul 2, 2025

thanks @x2ero for pointing me to it, I actually meant to say:
⚠️ Be careful the parameters are very different when using `splice` and `toSpliced`

> arr = [0,1,2,3]
[ 0, 1, 2, 3 ]
> arr.toSpliced(2)
[ 0, 1 ]
> arr.splice(0, 2)
[ 0, 1 ]
> arr
[ 2, 3 ]

worth a #jskata I guess
#JavaScript

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Wolfram wants peace #SEORank Jun 7, 2025

it's a tiny #jskata, but I just had to try it and so I wrote a #kata, just one test to solve:

https://jskatas.org/katas/es6/language/generator/send-return/

#JavaScript #generator #streaming #learning

Wolfram wants peace #SEORank Jun 7, 2025

Just did a #jskata on `return` and `yield` inside #generators [1]. Now that I did it it makes sense, but in 1h I will have forgotten it again. Is it not that natural, or complicated or is it me?

One kata a day, pushes growth your way.

[1] https://jskatas.org/katas/es6/language/generator/return/

#JavaScript #learning #generator

Generator – `return` inside a generator function

A kata to (re-)learn about Generator | `return` inside a generator function | Return statement in a generator function is special. | 9 tests to solve | Difficulty Level: ADVANCED

JavaScript Katas - Continuously Learn JavaScript. Your Way.

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Wolfram wants peace #SEORank Oct 24, 2024

Wanna try and play around with `Object.groupBy()`, which is new pretty in #JavaScript go to
https://jskatas.org/katas/es15/language/object-api/groupBy/ 🚀

#jskata #learning #javascript #testdriven

Object API – `Object.groupBy()`

A kata to (re-)learn about Object API | `Object.groupBy()` | | 8 tests to solve | Difficulty Level: BEGINNER

JavaScript Katas - Continuously Learn JavaScript. Your Way.

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Wolfram wants peace #SEORank Oct 24, 2024

The #jskata for this is in the making.
Get ahead by learning all the other 132 katas on https://jskatas.org

#learning #javascript #testdriven

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jskatas.org | JavaScript Katas | Continuously Learn JavaScript. Your Way.

JavaScript Katas - Continuously Learn JavaScript. Your Way.

Wolfram wants peace #SEORank Oct 18, 2024

Also inspired by our last night's #jslang #meetup I built a #JSKata for you all to practice #JavaScript Proxy a bit.
The basics:

https://jskatas.org/katas/es6/language/proxy/basics/

#testDriven #tests #kata #koan #learn

Proxy – basics

A kata to (re-)learn about Proxy | basics | A Proxy can intercept all accesses on a target object | 10 tests to solve | Difficulty Level: INTERMEDIATE

JavaScript Katas - Continuously Learn JavaScript. Your Way.

Wolfram wants peace #SEORank Mar 27, 2024

A new #jskata for learning #JavaScript in depth.

I just released: "The Object() constructor called as a function."
And there are things to learn, even though I do #JS for many years already.

Have fun: https://jskatas.org/katas/es1/language/object-api/constructor/?source=mastodon

`Object()` (as per ES1 spec)

A kata to (re-)learn about Object API | `Object()` (as per ES1 spec) | The `Object()` constructor called as a function performs a type conversion. | 8 tests to solve | Difficulty Level: INTERMEDIATE

JavaScript Katas - Continuously Learn JavaScript. Your Way.

Wolfram wants peace #SEORank Oct 11, 2023

Interesting, `array.shift()` was introduced in ECMAScript 3 [1] in 1999, see chapter 15.4.4.9. At least it's not part of the v2 spec [2] from 1998. In v2 the last chapter in 15.4.4 is 15.4.4.5.

Expect a #jskata on `array.shift()` to come soon.

[1] https://www.ecma-international.org/wp-content/uploads/ECMA-262_3rd_edition_december_1999.pdf
[2] https://www.ecma-international.org/wp-content/uploads/ECMA-262_2nd_edition_august_1998.pdf

#JavaScript #specification #jskatas