10 lines
184 B
Ruby
10 lines
184 B
Ruby
|
def bind_x_to_value(x)
|
||
|
|
binding
|
||
|
|
end
|
||
|
|
|
||
|
|
def eval_with_x(code, a, b)
|
||
|
|
eval(code, bind_x_to_value(b)) - eval(code, bind_x_to_value(a))
|
||
|
|
end
|
||
|
|
|
||
|
|
puts eval_with_x('2 ** x', 3, 5) # Prints "24"
|