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The evolution of Lua, continued [pdf]

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Re: The evolution of Lua, continued [pdf]

#51

Post by jrop »

azemetre wrote: post #27

My only context in using Lua is my neovim configuration, does any know of any good books or tutorials that make something more advance using only lua? Anything of note to consider/read/watch?

I always wrote Lua off, scoffing at the 1-based indexing, until I was "forced" to learn it thanks to Neovim. What a delightful little language it is. I do wish I could do certain things less verbosely (lambdas would be nice) -- but then again, I defeat myself by suggesting it, because not having all the features makes Lua so approachable.

Re: The evolution of Lua, continued [pdf]

#52

Post by strenholme »

hackthemack wrote: post #42

I was thinking a while back, how nice it would be if lua was the scripting language in the browser instead of javascript. There are some projects to compile lua to wasm and have it run in the browser... https://pluto-lang.org/web/#env=lua%3A5.4.6&code=if%20_PVERS... But interoperability with the DOM is the missing key. Still, if lua was used instead of javascript, I could see myself saying... man, I wonder what brows…

There’s also a Javascript implementation of Lua which allows one to run Lua in a browser:

https://github.com/fengari-lua/fengari-web

I don’t know if this can access the DOM in Lua, but considering that Fengari is in Javascript, adding a _DOM global variable should not be too hard (if it hasn’t already been done).

Re: The evolution of Lua, continued [pdf]

#53

Post by azemetre »

jrop wrote: post #51
azemetre wrote: post #27

My only context in using Lua is my neovim configuration, does any know of any good books or tutorials that make something more advance using only lua? Anything of note to consider/read/watch?

I always wrote Lua off, scoffing at the 1-based indexing, until I was "forced" to learn it thanks to Neovim. What a delightful little language it is. I do wish I could do certain things less verbosely (lambdas would be nice) -- but then again, I defeat myself by suggesting it, because not having all the features makes Lua so approachable.

Same here, in fact something I wish the neovim team would do is create a book where popular plugin authors create tutorials that recreate basic functionality of their plugins.

Seems like a no brainer that would help bring in more revenue too, it'd also be an "evergreen" book as new others can contribute over time.

I can't be the only one that would immediately buy a copy. :D

Re: The evolution of Lua, continued [pdf]

#54

Post by [deleted] »

strenholme wrote: post #40

Here’s my bit of public domain code for iterating through tables in Lua so that the elements are sorted. This routine works like the pairs() function included with Lua: -- Like pairs() but sorted function sPairs(inTable, sFunc) if not sFunc then sFunc = function(a, b) local ta = type(a) local tb = type(b) if(ta == tb) then return a Example usage of the above function: a={z=1,y=2,c=3,w=4} for k,v in sPairs(a) do print…

[deleted]

Re: The evolution of Lua, continued [pdf]

#56

Post by ardit33 »

jrop wrote: post #51
azemetre wrote: post #27

My only context in using Lua is my neovim configuration, does any know of any good books or tutorials that make something more advance using only lua? Anything of note to consider/read/watch?

I always wrote Lua off, scoffing at the 1-based indexing, until I was "forced" to learn it thanks to Neovim. What a delightful little language it is. I do wish I could do certain things less verbosely (lambdas would be nice) -- but then again, I defeat myself by suggesting it, because not having all the features makes Lua so approachable.

I used Lua professionally. I prefer the 1 indexing... it just feels more natural. For some reason the C apologists here will scream how 0 based is the only way to go. (which is not, it is just a historical artifact). Languages like ADA allowed you to use either 0 or 1, (or any arbitrary) starting index.

Re: The evolution of Lua, continued [pdf]

#57

Post by ufo »

strenholme wrote: post #36
pansa2 wrote: post #13

> work has begun on Lua 5.5 A beta version is now available: https://www.lua.org/work/ The main change from 5.4 seems to be the (optional?) removal of global-by-default, instead requiring declarations for global variables.

As it turns out, it’s possible with Lua going back to 5.1 to not allow undeclared global variables: https://www.lua.org/pil/14.2.html That code looks like this in Lua 5.1: function set(name, val) rawset(_G, name, val or false) end function exists(name) if rawget(_G, name) then return true end return false end throwError = {__newindex = function(self,name) error("Unknown global " .. name) end, __index = function(self,…

Naturally, the main catch is that this only detects the violation at run-time. It also won't stop you from accidentally overwriting a global variable that already exists.

Re: The evolution of Lua, continued [pdf]

#58

Post by ufo »

azemetre wrote: post #27

My only context in using Lua is my neovim configuration, does any know of any good books or tutorials that make something more advance using only lua? Anything of note to consider/read/watch?

Definitely include Roberto's Programming in Lua book in your list. Specially if you'd like to script Lua together with C. The book has a good primer on the Lua-C api in its latter half.

Re: The evolution of Lua, continued [pdf]

#59

Post by jrop »

azemetre wrote: post #53
jrop wrote: post #51

Earlier quoted context omitted.

I always wrote Lua off, scoffing at the 1-based indexing, until I was "forced" to learn it thanks to Neovim. What a delightful little language it is. I do wish I could do certain things less verbosely (lambdas would be nice) -- but then again, I defeat myself by suggesting it, because not having all the features makes Lua so approachable.

Same here, in fact something I wish the neovim team would do is create a book where popular plugin authors create tutorials that recreate basic functionality of their plugins. Seems like a no brainer that would help bring in more revenue too, it'd also be an "evergreen" book as new others can contribute over time. I can't be the only one that would immediately buy a copy. :D

I'm actually trying to work on a video-series to do just this. I've made my own rudimentary plugins reproducing several popular ones, and would like to walk through how I made: a) file-tree b) picker/fzf replacment c) hop/leap replacement d) surround plugin e) code-formatter f) hydra (sub-modes) g) many "UI" (interactive) buffers, etc.

None of these are published because the popular ones are better and provide more functionality, but I want to share what I believe is more valuable: what I learned while writing them.

Re: The evolution of Lua, continued [pdf]

#60

Post by rebolek »

dexwiz wrote: post #49
kragen wrote: post #23

Earlier quoted context omitted.

I think that's an illusion. The language of R is S, which originated at Bell Labs in 01976. Python began development in 01989, although Guido didn't release it until 01991. And the top 20 on https://www.tiobe.com/tiobe-index/ are Python, C (01972?), C++ (01982?), Java, C# (01999? though arguably it's just a dialect of Java), JS, Visual Basic (first released 01991, within your window), Golang (02007), Delphi (under th…

Why do you write your years with a leading zero?

Some people think that writing years as 2025 is wrong because this will lead to problems in year 9999 (y10k bug? I'm not sure if they call it that way) so they decided to introduce leading zero as it would solve something and not just postpone the problem to 99999.
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