scripts, expressions, and procedures
 

What's the difference between a script, an expression, and a procedure?

Expressions are in procedures and procedures are in scripts? Nice avatar btw

no...

a procedure can be defined and used in a script. If you are familiar with other languages it's basically a function. It takes parametres (but doesnt have to) and returns a value but again doesnt have to.

A script is a bunch of procedures and other code written together to do a specific task. It can have procedures etc.

An expression is typically done on one or more "channels" in maya. E.g. pCube1.tx += 1; in the tx channel will move the cube on a frame by frame basis along the x axis.

Hope that helps a bit

a

wow there's some really useful comments on the board today ;)

In some languages procedures are sub-programs which do not return a value and functions are sub-programs which do return a value. In MEL all sub-programs are called procedures. They can be local or global.

Thanks!