Truly declarative language?

Question

Does anyone know of a truly declarative language? The behavior I\'m looking for is kind of what Excel does, where I can define variables and formulas, and have the formula\'s re

Answer 1

Here is Daniel's example in Python, since I noticed you said you tried it in Python.

x = 10
y = 10

z = lambda: x + y

# Output: 20
print z()

x = 20

# Output: 30
print z()