watch

Sets a watch point for an expression which stops execution of your program whenever the value of the expression changes.

Syntax

watch expression [boolean-expression]
  1. expression is the expression to watch.
  2. boolean-expression is an optional boolean expression.

Usage

The watch point stops the program execution when the value of the expression changes.

If boolean-expression is provided, the watch point stops the execution of the program if the expression value has changed and the boolean-expression evaluates to TRUE.

Example

(fgldb) watch i if i >= 3