Re: simply question about syntatic sugar

["Soni L." <fakedme@...>]

On 06/06/15 06:33 PM, Rodrigo Azevedo wrote:

3.4.10 – Function Calls

The form

	functioncall ::= prefixexp ‘:’ Name args

Arguments have the following syntax:

	args ::= ‘(’ [explist] ‘)’
	args ::= tableconstructor
	args ::= LiteralString

can be used to call "methods". A call v:name(args) is syntactic sugar for v.name(v,args), except that v is evaluated only once.

-------------------

Let v be a usardata with a unary method, then

v:abs() is a syntatic sugar for v.abs(v)

v:reduce() is a syntatic sugar for v.reduce(v)

etc

This notation is very unpleasant. There is a problem if this behaviour of function calls

v:abs is a syntativ sugar for v.abs(v)

v:reduce is a syntatic sugar for v.reduce(v)

was valid?

Does v:abs() mean "call v.abs with v" or "call the result of calling v.abs with v"?

If not, I really appreciate this new flavor.

--

Rodrigo Azevedo Moreira da Silva

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