Syntax for multi-variable functions?

[Dan Ebberts]

Inside the function, you can use arguments.length to tell how many arguments were passed to the function. You can use arguments[] to access them if more were passed than are named in the function definition.

Dan

[Lu Nelson]

Thanks Dan,

That was fast — I must have posted at the right time of day;)

So if I understand correctly, that means if I wanted to define a function that could accept for example 3 or 5 arguments, I could implement a switch() based on whether (arguments.length==3) for example?

Best,

LMN

Lu Nelson
Berlin, Germany
—
[MacProQ2.66, 8GB, Sys10.5.6, FCP 6.0.5, AE 9.0.2]

[Dan Ebberts]

Sure, that should work.

Dan

[Lu Nelson]

Hmm…I’m guessing this also means I have to be careful of what order the arguments are given in, right?

— like with my e.g. of AE’s built in linear() function: if I give it only 3 arguments it assumes that the ones I am giving are what would have been values 1, 4, and 5 respectively, if it was called with 5 arguments;
so perhaps in defining the function one should just list the arguments like a1, a2, a3, etc. and then reassign them to internal variables before calculating…does that sound right?

I’ll try all this out tomorrow, today I’ve just been thinking it through on paper

Thanks for your replies Dan

Lu Nelson
Berlin, Germany
—
[MacProQ2.66, 8GB, Sys10.5.6, FCP 6.0.5, AE 9.0.2]

[Dan Ebberts]

I’ve never tried it, but that sounds right. You could do it like wiggle(), where you have to specify the 3rd and 4th argument to get to the 5th, or you could, as you suggest, assume in your function that if there are only three agruments passed, that they are the 1st 2nd and 5th.

Dan