Felix Böhm wrote:
Per definition, rest parameters always need to be at the end of a
FormalParameterList. I was wondering if this limitation could be liftet.
Use-case: Most SQL libraries for node support passing query arguments to
the query function (so SQL injections are avoided). The usual syntax is
db.run("SELECT * FROM t WHERE foo=? AND cbar=?", "bar", "cfoo",
function(err, row){…});
The number of arguments passed after the query depends on the number of
question marks inside the query. It would be nice when an implementation
could simply write db.run = function(query, ...params, cb){…} and avoid
using the arguments object or Array#poping the last element of params.
BTW, isn't this possible with comprehensions in parameter list:
db.run = function (query, ...[...params, cb]) { /* body */ }
If yes, problem solved.
This change would require two additions: Every Identifier past rest
can't be another rest parameter or have a default value specified.
Herby
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