While
 Usage
• While[test, body] evaluates test, then body, repetitively, until test first fails to give True.
Notes
• While[test] does the loop with a null body. • If Break[ ] is generated in the evaluation of body, the While loop exits. • Continue[ ] exits the evaluation of body, and continues the loop. • Unless Return[ ] or Throw[ ] are generated, the final value returned by While is Null. • Example: i=0; While[i < 0, tot += f[i]; i++]. Note that the roles of ; and , are reversed relative to the C programming language. • New in Version 1.
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