62 lines
1.4 KiB
Plaintext
62 lines
1.4 KiB
Plaintext
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# This is a comment
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## This is a documentaion comment
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import os, sys, time, string, macros
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proc getStr(num: int): string =
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result = case num:
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of low(int).. -1:
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"negative"
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of 0:
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"zero"
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of 1..high(int):
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"positive"
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else:
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"impossible"
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for letter in 'a'..'z':
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result.add(letter)
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type Animal = ref object of RootObj
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name: string
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age: int
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method vocalize(this: Animal): string {.base.} = "..."
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var
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a = @[1, 2, 3]
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b = newSeq[int](3)
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discard a[0] + MyInteger(4)
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for i, v in a:
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b[i] = v*v
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b.delete(0) # takes O(n) time
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b = a[0] & b # Same as original b
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echo powersOfTwo.filter(proc (x: int): bool = x > 32)
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type
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ThreeStringAddress = array[3, string]
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let names: ThreeStringAddress = ["Jasmine", "Ktisztina", "Kristof"]
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proc zip[I, T](a, b: array[I, T]):
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array[I, tuple[a, b: T]] =
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for i in low(a)..high(a):
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result[i] = (a[i], b[i])
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macro class*(head, body: untyped): untyped =
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# The macro is immediate, since all its parameters are untyped.
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if head.kind == nnkInfix and head[0].ident == !"of":
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# `head` is expression `typeName of baseClass`
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# echo head.treeRepr
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# --------------------
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# Infix
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# Ident !"of"
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# Ident !"Animal"
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# Ident !"RootObj"
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typeName = head[1]
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baseName = head[2]
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# create a type section in the result
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template typeDecl(a, b): untyped =
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type a = ref object of b
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