$eq_all

Usage: $eq_all(x,a1,a2,*args)
Category: conditional

Description:

Returns true if x equals a1 and a2, etc. Can be used with an arbitrary number of arguments. Note that comparisons are case-sensitive.

Functionally equivalent to $and($eq(x,a1),$eq(x,a2) ...).

Example:

The following statements will return the values indicated:

$eq_all(A,A,B,C)    ==>  ""   (False)
$eq_all(A,a,A,A)    ==>  ""   (False)
$eq_all(A,A,A,A)    ==>  "1"  (True)
$eq_all(,,,)        ==>  "1"  (True)
$eq_all(,a,)        ==>  ""   (False)