Added first exercises and half of second exercises
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2 changed files with 21 additions and 21 deletions
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@ -3,37 +3,37 @@
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(meditations
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"We shall contemplate truth by testing reality, via equality"
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(= __ true)
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(= (= 1 1) true)
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"To understand reality, we must compare our expectations against reality"
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(= __ (+ 1 1))
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(= 2 (+ 1 1))
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"You can test equality of many things"
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(= (+ 3 4) 7 (+ 2 __))
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(= (+ 3 4) 7 (+ 2 5))
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"Some things may appear different, but be the same"
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(= __ (= 2 2/1))
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(= (= 3 3/1) (= 2 2/1))
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"You cannot generally float to heavens of integers"
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(= __ (= 2 2.0))
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(= (= 1 1.0) (= 2 2.0))
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"But a looser equality is also possible"
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(= __ (== 2.0 2))
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(= (== 3.0 3) (== 2.0 2))
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"Something is not equal to nothing"
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(= __ (not (= 1 nil)))
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(= true (not (= 1 nil)))
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"Strings, and keywords, and symbols: oh my!"
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(= __ (= "hello" :hello 'hello))
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(= (="why" :why 'why) (= "hello" :hello 'hello))
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"Make a keyword with your keyboard"
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(= :hello (keyword __))
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(= :hello (keyword 'hello))
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"Symbolism is all around us"
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(= 'hello (symbol __))
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(= 'hello (symbol "hello"))
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"What could be equivalent to nothing?"
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(= __ nil)
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(= nil nil)
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"When things cannot be equal, they must be different"
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(not= :fill-in-the-blank __))
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(not= :fill-in-the-blank :hi))
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@ -4,31 +4,31 @@
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(meditations
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"A string is nothing more than text surrounded by double quotes"
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(= __ "hello")
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(= (str 'hello) "hello")
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"But double quotes are just magic on top of something deeper"
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(= __ (str 'world))
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(= "world" (str 'world))
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"You can do more than create strings, you can put them together"
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(= "Cool right?" (str __ __))
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(= "Cool right?" (str "Cool " "right?"))
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"You can even get certain characters"
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(= \C (get "Characters" __))
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(= \C (get "Characters" 0))
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"Or even count the characters"
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(= __ (count "Hello World"))
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(= 11 (count "Hello World"))
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"But strings and characters are not the same"
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(= __ (= \c "c"))
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(= false (= \c "c"))
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"What if you only wanted to get part of a string?"
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(= "World" (subs "Hello World" __ __))
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(= "World" (subs "Hello World" 6 11))
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"How about joining together elements in a list?"
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(= __ (string/join '(1 2 3)))
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(= "123" (string/join '(1 2 3)))
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"What if you wanted to separate them out?"
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(= "1, 2, 3" (string/join __ '(1 2 3)))
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(= "1, 2, 3" (string/join ", " '(1 2 3)))
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"Maybe you want to separate out all your lines"
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(= [__ __ __] (string/split-lines "1\n2\n3"))
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