O'Reilly logo

JMP 11 Scripting Guide, Second Edition, 2nd Edition by SAS Institute

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Lists and Expressions
Stored expressions
An expression is something that can be evaluated. The first section of the chapter, “Rules for Name Resolution” in the “JSL Building Blocks” chapter, discussed how JMP evaluates expressions. Now you must consider when JMP evaluates expressions.
JMP tends to evaluate things as soon as it possibly can, and it returns a result. If an expression is on the right side of an assignment, the result is what is assigned. Usually, that is what you want and expect, but sometimes you need to be able to delay evaluation.
Quoting and unquoting expressions
The operators to control when expressions are evaluated are Expr and Eval, which you should think of as the procrastination and eager operators. Expr just copies ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required