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On Wed, Jul 31, 2019 at 7:07 AM Soni "They/Them" L. wrote:

Cratera is a language very similar to Lua, and as such most of the Lua
manual applies to it. Additionally, it supports the following syntax
sugar, called "traits":


which is equivalent to:

     mytable[mytrait].myfunction(mytable, myargument)

Is this feature really needed?
Please show an example.

Am I able to invoke a method by its name from a variable in Cratera?
   local methodname = "close"

Cratera's feature could be generalized further.
The following two simple rules look like a natural extension to Lua syntax:
- There could be multiple colons in a chain
- Each colon means "use current value as extra argument"
   a:b[c].f(x)    ->  a.b[c].f(a,                        x)
   a.b:[c].f(x)   ->  a.b[c].f(   a.b,                   x)
   a.b[c]:f(x)    ->  a.b[c].f(        a.b[c],           x)
   a:b[c]:f(x)    ->  a.b[c].f(a,      a.b[c],           x)
   a.b[c].f:(x)   ->  a.b[c].f(                a.b[c].f, x)
   a:b:[c]:f:(x)  ->  a.b[c].f(a, a.b, a.b[c], a.b[c].f, x)
   c:()           ->  c(c)
It's not a monkey smile in the last line, variable "c" contains a "callable object"