On Thu, 19 May 2011, Martin Budden wrote:
(Note that adding parameters on
the end is OK, at least in javascript (as long as an 'undefined'
default value is assumed)).
I'd like to see this habit change. It makes for very noisy method
signatures. I much prefer (in javascript at least) the policy of
passing 0, 1 or 2 required parameters, and then everything else that be
option as a dict/hash. A tidied up version of this:
var foo = function(req1, req2, passed_options) {
var options = {
bar: 'hello'
}
if (typeof passed_options === 'undefined')
passsed_options = {};
$.extend(options, passed_options)
// actual code
}
This is much more readable and maintainable than:
TiddlyWiki.prototype.saveTiddler =
function(title,newTitle,newBody,modifier,modified,tags,fields,clearChangeCount,created,creator)
It makes it possible to add and remove parameters without changing the
method signature, keeps things on one line, allows for easy defaults
and parameter checking and is generally just more tidy.
--
Chris Dent http://burningchrome.com/
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