Added first exercises and half of second exercises

This commit is contained in:
Johnson Zhang 2021-05-04 10:17:07 -04:00
parent a9c22921a5
commit 5cbd5b1a95
2 changed files with 21 additions and 21 deletions

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@ -3,37 +3,37 @@
(meditations (meditations
"We shall contemplate truth by testing reality, via equality" "We shall contemplate truth by testing reality, via equality"
(= __ true) (= (= 1 1) true)
"To understand reality, we must compare our expectations against reality" "To understand reality, we must compare our expectations against reality"
(= __ (+ 1 1)) (= 2 (+ 1 1))
"You can test equality of many things" "You can test equality of many things"
(= (+ 3 4) 7 (+ 2 __)) (= (+ 3 4) 7 (+ 2 5))
"Some things may appear different, but be the same" "Some things may appear different, but be the same"
(= __ (= 2 2/1)) (= (= 3 3/1) (= 2 2/1))
"You cannot generally float to heavens of integers" "You cannot generally float to heavens of integers"
(= __ (= 2 2.0)) (= (= 1 1.0) (= 2 2.0))
"But a looser equality is also possible" "But a looser equality is also possible"
(= __ (== 2.0 2)) (= (== 3.0 3) (== 2.0 2))
"Something is not equal to nothing" "Something is not equal to nothing"
(= __ (not (= 1 nil))) (= true (not (= 1 nil)))
"Strings, and keywords, and symbols: oh my!" "Strings, and keywords, and symbols: oh my!"
(= __ (= "hello" :hello 'hello)) (= (="why" :why 'why) (= "hello" :hello 'hello))
"Make a keyword with your keyboard" "Make a keyword with your keyboard"
(= :hello (keyword __)) (= :hello (keyword 'hello))
"Symbolism is all around us" "Symbolism is all around us"
(= 'hello (symbol __)) (= 'hello (symbol "hello"))
"What could be equivalent to nothing?" "What could be equivalent to nothing?"
(= __ nil) (= nil nil)
"When things cannot be equal, they must be different" "When things cannot be equal, they must be different"
(not= :fill-in-the-blank __)) (not= :fill-in-the-blank :hi))

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@ -4,31 +4,31 @@
(meditations (meditations
"A string is nothing more than text surrounded by double quotes" "A string is nothing more than text surrounded by double quotes"
(= __ "hello") (= (str 'hello) "hello")
"But double quotes are just magic on top of something deeper" "But double quotes are just magic on top of something deeper"
(= __ (str 'world)) (= "world" (str 'world))
"You can do more than create strings, you can put them together" "You can do more than create strings, you can put them together"
(= "Cool right?" (str __ __)) (= "Cool right?" (str "Cool " "right?"))
"You can even get certain characters" "You can even get certain characters"
(= \C (get "Characters" __)) (= \C (get "Characters" 0))
"Or even count the characters" "Or even count the characters"
(= __ (count "Hello World")) (= 11 (count "Hello World"))
"But strings and characters are not the same" "But strings and characters are not the same"
(= __ (= \c "c")) (= false (= \c "c"))
"What if you only wanted to get part of a string?" "What if you only wanted to get part of a string?"
(= "World" (subs "Hello World" __ __)) (= "World" (subs "Hello World" 6 11))
"How about joining together elements in a list?" "How about joining together elements in a list?"
(= __ (string/join '(1 2 3))) (= "123" (string/join '(1 2 3)))
"What if you wanted to separate them out?" "What if you wanted to separate them out?"
(= "1, 2, 3" (string/join __ '(1 2 3))) (= "1, 2, 3" (string/join ", " '(1 2 3)))
"Maybe you want to separate out all your lines" "Maybe you want to separate out all your lines"
(= [__ __ __] (string/split-lines "1\n2\n3")) (= [__ __ __] (string/split-lines "1\n2\n3"))