README: typo.

[jackhill/mal.git] / tests / stepA_more.mal

;;
;; Testing try*/catch*

(try* (abc 1 2) (catch* exc (prn exc))))
; "'abc' not found"
;=>nil

;;;TODO: fix so long lines don't trigger ANSI escape codes
;;;(try* (throw {"data" "foo"}) (catch* exc (do (prn "exc is:" exc) 7)))
;;;; "exc is:" {"data" "foo"}
;;;;=>7

(try* (throw "my exception") (catch* exc (do (prn "exc:" exc) 7)))
; "exc:" "my exception"
;=>7


;;
;; Testing builtin functions

(symbol? 'abc)
;=>true
(symbol? "abc")
;=>false

(nil? nil)
;=>true
(nil? true)
;=>false

(true? true)
;=>true
(true? false)
;=>false
(true? true?)
;=>false

(false? false)
;=>true
(false? true)
;=>false

(sequential? (list 1 2 3))
;=>true
(sequential? [15])
;=>true
(sequential? sequential?)
;=>false
(sequential? nil)
;=>false
(sequential? "abc")
;=>false


;; Testing apply function
(apply + (list 2 3))
;=>5
(apply + 4 (list 5))
;=>9
(apply prn (list 1 2 "3" (list)))
; 1 2 "3" ()
;=>nil


;; Testing map function
(def! nums (list 1 2 3))
(def! double (fn* (a) (* 2 a)))
(double 3)
;=>6
(map double nums) 
;=>(2 4 6)


;; Testing conj function
(conj (list) 1)
;=>(1)
(conj (list 1) 2)
;=>(2 1)
(conj (list 2 3) 4)
;=>(4 2 3)
(conj (list 2 3) 4 5 6)
;=>(6 5 4 2 3)
(conj (list 1) (list 2 3))
;=>((2 3) 1)

(conj [] 1)
;=>[1]
(conj [1] 2)
;=>[1 2]
(conj [2 3] 4)
;=>[2 3 4]
(conj [2 3] 4 5 6)
;=>[2 3 4 5 6]
(conj [1] [2 3])
;=>[1 [2 3]]



;;
;; Testing hash-maps
(hash-map "a" 1)
;=>{"a" 1}

{"a" 1}
;=>{"a" 1}

(assoc {} "a" 1)
;=>{"a" 1}

(def! hm1 (hash-map))
;=>{}

(map? hm1)
;=>true
(map? 1)
;=>false
(map? [])
;=>false

(get nil "a")
;=>nil

(get hm1 "a")
;=>nil

(contains? hm1 "a")
;=>false

(def! hm2 (assoc hm1 "a" 1))
;=>{"a" 1}

(get hm1 "a")
;=>nil

(contains? hm1 "a")
;=>false

(get hm2 "a")
;=>1

(contains? hm2 "a")
;=>true

(keys hm2)
;=>("a")

(vals hm2)
;=>(1)

(count (keys (assoc hm2 "b" 2 "c" 3)))
;=>3

(def! hm3 (assoc hm2 "b" 2))
(count (keys hm3))
;=>2
(count (vals hm3))
;=>2

(dissoc hm3 "a")
;=>{"b" 2}

(dissoc hm3 "a" "b")
;=>{}

(dissoc hm3 "a" "b" "c")
;=>{}

(count (keys hm3))
;=>2


;;
;; Testing metadata
(meta [1 2 3])
;=>nil

(meta (fn* (a) a))
;=>nil

(meta +)
;=>nil

(with-meta [1 2 3] {"a" 1})
;=>[1 2 3]

(meta (with-meta [1 2 3] {"a" 1}))
;=>{"a" 1}

(meta (with-meta [1 2 3] "abc"))
;=>"abc"

(meta (with-meta (list 1 2 3) {"a" 1}))
;=>{"a" 1}

(meta (with-meta {"abc" 123} {"a" 1}))
;=>{"a" 1}

;;; Not actually supported by Clojure
;;;(meta (with-meta (atom 7) {"a" 1}))
;;;;=>{"a" 1}

(def! l-wm (with-meta [4 5 6] {"b" 2}))
;=>[4 5 6]
(meta l-wm)
;=>{"b" 2}

(meta (with-meta l-wm {"new_meta" 123}))
;=>{"new_meta" 123}
(meta l-wm)
;=>{"b" 2}


(def! f-wm (with-meta (fn* [a] (+ 1 a)) {"abc" 1}))
(meta f-wm)
;=>{"abc" 1}

(meta (with-meta f-wm {"new_meta" 123}))
;=>{"new_meta" 123}
(meta f-wm)
;=>{"abc" 1}


(def! f-wm2 ^{"abc" 1} (fn* [a] (+ 1 a)))
(meta f-wm2)
;=>{"abc" 1}

;;
;; Make sure closures and metadata co-exist
(def! gen-plusX (fn* (x) (with-meta (fn* (b) (+ x b)) {"meta" 1})))
(def! plus7 (gen-plusX 7))
(def! plus8 (gen-plusX 8))
(plus7 8)
;=>15
(meta plus7)
;=>{"meta" 1}
(meta plus8)
;=>{"meta" 1}
(meta (with-meta plus7 {"meta" 2}))
;=>{"meta" 2}
(meta plus8)
;=>{"meta" 1}


;;
;; Testing atoms

(def! inc3 (fn* (a) (+ 3 a)))

(def! a (atom 2))
;=>(atom 2)

;;;(type a)
;;;;=>"atom"

(deref a)
;=>2

@a
;=>2

(reset! a 3)
;=>3

@a
;=>3

(swap! a inc3)
;=>6

@a
;=>6

(swap! a (fn* (a) a))
;=>6

(swap! a (fn* (a) (* 2 a)))
;=>12

(swap! a (fn* (a b) (* a b)) 10)
;=>120

(swap! a + 3)
;=>123

;; Testing swap!/closure interaction
(def! inc-it (fn* (a) (+ 1 a)))
(def! atm (atom 7))
(def! f (fn* [] (swap! atm inc-it)))
(f)
;=>8
(f)
;=>9

;;
;; Testing read-str and eval
(read-string "(1 2 (3 4) nil)")
;=>(1 2 (3 4) nil)

(eval (read-string "(+ 4 5)"))
;=>9

;;
;; Testing readline
(readline "mal-user> ")
"hello"
;=>"\"hello\""

;;
;; Testing macros cond and or
(cond 1 2 3 4)
;=>2
(cond false 2 3 4)
;=>4
(cond false 2 false 4)
;=>nil

(or)
;=>nil
(or 1)
;=>1
(or 1 2)
;=>1
(or nil 2)
;=>2