Boolean

Check if a value is a boolean

Given a file named “main.scm” with:

(import (scheme base))

(write-u8 (if (boolean? <value>) 65 66))

When I successfully run stak main.scm

Then the stdout should contain exactly “<output>”.

Examples

value	output
#f	A
#t	A
’()	B

Use a not operator

Given a file named “main.scm” with:

(import (scheme base))

(write-u8 (if (not <value>) 65 66))

When I successfully run stak main.scm

Then the stdout should contain exactly “<output>”.

Examples

value	output
#f	A
#t	B

Check equality of boolean values

Given a file named “main.scm” with:

(import (scheme base))

(write-u8 (if (boolean=? <values>) 65 66))

When I successfully run stak main.scm

Then the stdout should contain exactly “<output>”.

Examples

values	output
#f #f	A
#f #t	B
#t #f	B
#t #t	A
#f #f #f	A
#t #t #t	A
#f #f #t	B
#t #t #f	B