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Re: Non Compulsory Parameters & a Null Constant ?
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Re: Non Compulsory Parameters & a Null Constant ?


  • Subject: Re: Non Compulsory Parameters & a Null Constant ?
  • From: Paul Skinner <email@hidden>
  • Date: Wed, 12 Feb 2003 19:43:37 -0500

On Wednesday, February 12, 2003, at 01:05 PM, has wrote:

Adam Hinshaw wrote:

is there a way to specify parameters in a handler that are not compulsory in
a call to that handler.

Handler parameters are non-optional (annoying, but that's how it is). You can work around this when you have to:

on doSomething(paramRec)
set {foo:foo, bar:bar} to paramRec & {foo:0, bar:false}
log foo
log bar
end

doSomething({})
doSomething({foo:4})
doSomething({foo:19, bar:true})

It's kinda ugly, but may be the lesser evil when writing handlers that must have this level of flexibility and self-sufficiency (e.g. reusable libraries). Rest of the time, it's simpler just to be explicit:

on doSomething(foo, bar)
...
end

If it'll make your code easier to read/maintain, you can always define your default values up front as 'constants':



It's kinda ugly, ...snip...

I've heard you express that sentiment before has. I still don't get it.
Perhaps if you picture the braces like this...

GildedScallopShell({Venus:"rising"})

:)

Paul Skinner
--
Life is dying to be born.
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 >Re: Non Compulsory Parameters & a Null Constant ? (From: has <email@hidden>)

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