On Wednesday, August 10, 2016 at 8:37:18 PM UTC+2, Todd Zimmerman wrote:
>
> Is there any significant difference in SageMath between defining a
> function using lambda vs. defining it using 'def ...:'?
>
>
This is actually a pure Python question, and the answer is yes. Technically:
def f1(x):
return x
f2 = lambda x : x
import dis # disassembler
dis.dis(f1)
2 0 LOAD_FAST 0 (x)
3 RETURN_VALUE
dis.dis(f2)
1 0 LOAD_FAST 0 (x)
3 RETURN_VALUE
But you cannot integrate or differentiate them! For that, you need a
function/symbolic expression, which is a Sage-specific object!
Under the hood, f(x) = x is constructed like:
x = var("x")
f = symbolic_expression(x).function(x)
-- harald
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