steel/identity
complex?
Checks if the given value is a complex number
(complex? value) -> boolean?
- value : any - The value to check
Examples
> (complex? 3+4i) ;; => #t
> (complex? 42) ;; => #t
> (complex? "hello") ;; => #f
eof-object?
Returns #t if the value is an EOF object.
(eof-object? any/c) -> bool?
exact-integer?
Checks if the given value is an exact integer
(exact-integer? value) -> boolean?
- value : any - The value to check
Examples
> (exact-integer? 42) ;; => #t
> (exact-integer? -42) ;; => #t
> (exact-integer? 4.0) ;; => #f
float?
Checks if the given value is a floating-point number
(float? value) -> boolean?
- value : any - The value to check
Examples
> (float? 42) ;; => #f
> (float? 3.14) ;; => #t
> (float? #t) ;; => #f
int?
Checks if the given value is an integer, an alias for integer?
(int? value) -> boolean?
- value : any - The value to check
Examples
> (int? 42) ;; => #t
> (int? 3.14) ;; => #f
> (int? "hello") ;; => #f
integer?
Checks if the given value is an integer, an alias for int?
(integer? value) -> boolean?
- value : any - The value to check
Examples
> (integer? 42) ;; => #t
> (integer? 3.14) ;; => #f
> (integer? "hello") ;; => #f
number?
Checks if the given value is a number
(number? value) -> boolean?
- value : any - The value to check
Examples
> (number? 42) ;; => #t
> (number? "hello") ;; => #f
> (number? 'symbol) ;; => #f
rational?
Returns #t if obj is a rational number, #f otherwise. Rational numbers are numbers that can be expressed as the quotient of two numbers. For example, 3/4, -5/2, 0.25, and 0 are rational numbers.
(rational? value) -> bool?
- value : any - The value to check
Examples:
> (rational? (/ 0.0)) ;; => #f
> (rational? 3.5) ;; => #t
> (rational? 6/10) ;; => #t
> (rational? +nan.0) ;; => #f
real?
Checks if the given value is a real number
(real? value) -> boolean?
- value : any - The value to check
Examples
> (real? 42) ;; => #t
> (real? 3+4i) ;; => #f
> (real? "hello") ;; => #f