X+1; Why?

[chimanbj]

A colleague of mine is wondering how the syntax:

x+1;

works. It obviously produces the same result as:

x=x+1;

but she wants to understand why.

Thanks!

[sbb]

Review the topic of how a SAS DATA step performs a "retain" or doesn't, depending on the statement syntax and/or whether you have coded a RETAIN statement.

Scott Barry
SBBWorks, Inc.

Suggested Google advanced search argument, this topic / post:

data step retain value site:sas.com

[chimanbj]

This didn't sufficiently address the question of why this works.

[RickM]

Go to the online doc and search "sum statement syntax"

[chimanbj]

Thank you

[mfisher]

http://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a000289454.htm