Gitlet.js – Git implemented in 1k lines of JavaScript (2015) • Hacker News Board

Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#1

Post by tambourine_man » Tue, Apr 13, 2021, 1:56 AM UTC

Gitlet.js – Git implemented in 1k lines of JavaScript (2015)
gitlet.maryrosecook.com

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#2

Post by billconan » Tue, Apr 13, 2021, 2:00 AM UTC

this is cool! but I'm curious to see a git blame implementation.

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#3

Post by dcwca » Tue, Apr 13, 2021, 2:49 AM UTC

This is such great work.

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#4

Post by phist_mcgee » Tue, Apr 13, 2021, 3:05 AM UTC

billconan wrote: post #2

this is cool! but I'm curious to see a git blame implementation.

You mean the most conflict driven and passive aggressive feature in any programming tooling?

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#5

Post by asxd » Tue, Apr 13, 2021, 3:09 AM UTC

phist_mcgee wrote: post #4

billconan wrote: post #2

this is cool! but I'm curious to see a git blame implementation.

You mean the most conflict driven and passive aggressive feature in any programming tooling?

I mean, it just tells you the commit that last changed a line...

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#6

Post by billconan » Tue, Apr 13, 2021, 3:14 AM UTC

asxd wrote: post #5

phist_mcgee wrote: post #4

Earlier quoted context omitted.

You mean the most conflict driven and passive aggressive feature in any programming tooling?

I mean, it just tells you the commit that last changed a line...

it's not that simple. git is a snapshot, i.e. it saves an entire file. How to recover changed lines from it efficiently? And How to do it for the entire history?

Basically, I want to understand this code

https://github.com/git/git/blob/master/blame.c

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#7

Post by primitivesuave » Tue, Apr 13, 2021, 3:15 AM UTC

This is so cool, and also my first time seeing this brilliant format for long-form explanations of code. Is this a thing out there, and does anyone have any pointers on libraries that do this?

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#8

Post by momothereal » Tue, Apr 13, 2021, 3:18 AM UTC

In the 'real' Git, one of the functions I use frequently is `git checkout -- .`, which discards any unstaged changes. Looking at Gitlet's implementation, it wouldn't handle that well as `checkout` can only take a ref.

So I guess I'm wondering what the real `git checkout -- .` actually does behind the scenes?

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#9

Post by fs_tab » Tue, Apr 13, 2021, 3:29 AM UTC

primitivesuave wrote: post #7

This is so cool, and also my first time seeing this brilliant format for long-form explanations of code. Is this a thing out there, and does anyone have any pointers on libraries that do this?

Backbone.js comes to mind: https://backbonejs.org/docs/backbone.html.

Edit: The author of backbone.js has a tool that generates documentation in this style. http://ashkenas.com/docco/

Re: Gitlet.js – Git implemented in 1k lines of JavaScript (2015)

#10

Post by NobodyNada » Tue, Apr 13, 2021, 3:30 AM UTC

primitivesuave wrote: post #7

This is so cool, and also my first time seeing this brilliant format for long-form explanations of code. Is this a thing out there, and does anyone have any pointers on libraries that do this?

It’s called literate programming, invented by Donald Knuth: https://en.m.wikipedia.org/wiki/Literate_programming