special-operator-p - ANSI Common Lisp

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special-operator-p (Function)

Syntax:

— Function: special-operator-p symbol → generalized-boolean

Arguments and Values:

symbol—a symbol.

generalized-boolean—a generalized boolean.

Description:

Returns true if symbol is a special operator; otherwise, returns false.

Examples:

 (special-operator-p 'if) → true
 (special-operator-p 'car) → false
 (special-operator-p 'one) → false

Exceptional Situations:

Should signal type-error if its argument is not a symbol.

Notes:

Historically, this function was called special-form-p. The name was finally declared a misnomer and changed, since it returned true for special operators, not special forms.