NumberP

Help Contents Data Structure Primitives Predicates NumberP
NameInTableP CharP

NumberP thing
Number? thing

outputs TRUE if the input is a number, FALSE otherwise.

Examples: 

Number? 1234		;true  ;-)
Number? "1234		;false  ;-)
Number? 2i		;true  ;-)
Number? 2.2		;true  ;-)
Number? [1234]		;false  ;-)
Number? {1}		;false  ;-)

NameInTableP CharP