CRYSTAL REPORT What is x:=x;?

Question

What does this mean in Crystal Report XI?

x:=x;

The whole formula is

WhilePrintingRecords;
Shared numbervar x;
x:=x; 

But it doesn't give any output. Thanks in advance!

Answer 1

The x:=x; section would normally be used to set the value of x eg:

WhilePrintingRecords;
Shared numbervar x;
x:=10;

Running this code sets the variable and returns the value set (as long as only a single variable is set), to also return the value of the variable you can add:

WhilePrintingRecords;
Shared numbervar x;
x:=10;
x

Or if the variable is set elsewhere, to return the value you can do:

WhilePrintingRecords;
Shared numbervar x;
x