Re: Thought experiment: what would you remove from Lua

[dyngeccetor8 <dyngeccetor8@...>]

> On 1 August 2018 at 09:55, dyngeccetor8 <dyngeccetor8@disroot.org> wrote:
>
>> * string.reverse() (anyone used it?)

On 08/01/2018 08:25 AM, Vaughan McAlley wrote:

> I was using it when "deleting" a string—going through the string
> backwards and simulating appropriate keystrokes to delete that
> character. Then I changed to going backwards through the string by
> UTF-8 codepoint, so had to think of something else.
> 
> Vaughan


On 08/01/2018 09:00 AM, Dirk Laurie wrote:

> **_`The quick brown fox jumps over the lazy dog`_**
>
> I assemble the starting markdown sequence from the font information
> and then the ending is done by string.reverse.


On 08/01/2018 02:12 PM, Albert Chan wrote:

> My script calc.lua used it to search for last ";"
>
> Calc a=3; b=7; c=10; b*b - 4*a*c
>
> => lua calc.lua "a=3; b=7; c=10; b*b - 4*a*c"
> => -71
>
>  t= s:reverse():find(';', 2, 'plain')    -- locate last ;
>
> if t then    -- multi-statements detected
>   s = "function()" .. s:sub(1, -t) ..
>          " return " .. s:sub(-t+1) ..
>          " end)()"
> end
> print( loadstring("return " .. s)() )    -- evaluate

Wow! String reversing function is surprisingly practical!

And I like this code snippet from Albert Chan: short, simple
and useful. Clever usage of negative offsets.

My vision on string manipulations improved. Thank you guys!

-- Martin