while (AutoLISP)

Evaluates a test expression, and if it is not nil, evaluates other expressions; repeats this process until the test expression evaluates to nil

Supported Platforms: Windows and Mac OS

Signature

(while testexpr [expr ...])

testexpr

Type: Integer, Real, String, List, Symbol, File, Ename (entity name), T, or nil

The expression containing the test condition.

expr

Type: Integer, Real, String, List, Symbol, File, Ename (entity name), T, or nil

One or more expressions to be evaluated until testexpr is nil.

Return Values

Type: Integer, Real, String, List, Symbol, File, Ename (entity name), T, or nil

The most recent value of the last expr.

Remarks

The while function continues until testexpr is nil.

Examples

The following code calls user function some-func ten times, with test set to 1 through 10. It then returns 11, which is the value of the last expression evaluated:

(setq test 1)
(while (<= test 10)
  (some-func test)
  (setq test (1+ test))
)