Einstein 13: Short method names

short.rb

def implies?(set_a, val_a, set_b, val_b)
  (0..4).any? do |i|
    set_a[i] == val_a &&
    set_b[i] == val_b
  end
end

# Becomes:

def i(a, b, c, d)
  (0..4).any? do |i|
    a[i] == b &&
    c[i] == d
  end
end

###########

def left_of?(set_a, val_a, set_b, val_b)
  (0..4).any? do |i|
    set_a[i]   == val_a &&
    set_b[i+1] == val_b
  end
end

# Becomes:

def l(a, b, c, d)
  (0..4).any? do |i|
    a[i]   == b &&
    c[i+1] == d
  end
end

###########

def next_to?(set_a, val_a, set_b, val_b)
  left_of?(set_a, val_a, set_b, val_b) ||
  left_of?(set_b, val_b, set_a, val_a)
end

# Becomes:

def n(a, b, c, d)
  l(a, b, c, d) ||
  l(c, d, a, b)
end