CoffeeScript メモ （空白ややこし編）

a = (n) -> 2 + n
b = 2

console.log a - 2 # NaN
console.log a -2  # 0
console.log a- 2  # NaN
console.log a-2   # NaN

console.log b - 2 # 0
console.log b -2  # TypeError
console.log b- 2  # 0
console.log b-2   # 0

console.log 2 - 2 # 0
console.log 2 -2  # 0
console.log 2- 2  # 0
console.log 2-2   # 0

うん、まぁ。