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# Example from nim front page. Compile with:
#
# nim -c -d:release c example && ./example
import std/strformat
type
Person = object
name: string
age: Natural # Ensures the age is positive
let people = [
Person(name: "John", age: 45),
Person(name: "Kate", age: 30)
]
for person in people:
# Type-safe string interpolation,
# evaluated at compile time.
echo(fmt"{person.name} is {person.age} years old")
# Thanks to Nim's 'iterator' and 'yield' constructs,
# iterators are as easy to write as ordinary
# functions. They are compiled to inline loops.
iterator oddNumbers[Idx, T](a: array[Idx, T]): T =
for x in a:
if x mod 2 == 1:
yield x
for odd in oddNumbers([3, 6, 9, 12, 15, 18]):
echo odd
# Use Nim's macro system to transform a dense
# data-centric description of x86 instructions
# into lookup tables that are used by
# assemblers and JITs.
import macros, strutils
macro toLookupTable(data: static[string]): untyped =
result = newTree(nnkBracket)
for w in data.split(';'):
result.add newLit(w)
const
data = "mov;btc;cli;xor"
opcodes = toLookupTable(data)
for o in opcodes:
echo o
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