Hello World

Other "Hello World" solutions.

proc hello*: string =
  "Hello, World!"

Isogram

Other "Isogram" solutions.

import sets, unicode, sequtils, sugar

proc isIsogram*(str: string): bool =
  var seen: HashSet[Rune] = initHashSet[Rune]()
  for c in toLower(str).toRunes.filter(c => c.isAlpha):
    if seen.containsOrIncl(c):
      return false
  return true

Leap

Other "Leap" solutions.

func isLeapYear*(year: int): bool =
  year mod 4 == 0 and (
    year mod 100 != 0 or year mod 400 == 0
  )

Pangram

Other "Pangram" solutions.

import sequtils, strutils

func isPangram*(phrase: string): bool =
  {'a'..'z'}.allIt it.in(phrase.toLower)

Reverse String

Other "Reverse String" solutions.

proc reverse*(s: string): string =
  if s == "":
    return s

  var aux = s
  for i in 0 .. high(s) div 2:
    swap(aux[i], aux[high(aux) - i])
  aux

Two Fer

Other "Two Fer" solutions.

import strformat

proc twoFer*(name = "you"): string =
  &"One for {name}, one for me."