how do you code and evaluate this, should output 4

["1", "+", "3"]

@highlight

vals = ["1", "+", "3"]

count = 0

for val in vals:

count += 1

count +=1

print(count)

I think highlight hates python. Or I cant do it.

hey that was quick, iam using javascript, but this will work

shouldBeFour =eval("return " + ['1','+','3'].join('')) should work. Though I haven't tried it since I'm on the phone.

@Godisalie https://is.gd/dtjCdV

So the input is 4 and you want to find two whole numbers that add up to it?

@JoshBent He never said that it was uncontrolled input. If the data is save eval is completely fine. If it isn't its a great learning opportunity.

@Godisalie loool

@Godisalie And by "learning opportunity" you mean "attack vector"?

void func(const char *str) {
  if (!strcmp(str, "[\"1\", \"+\", \"3\"]"))
    printf("4");
}

@Godisalie "hey, here's my asshole, I know your dick is safe, otherwise the STD will be a great learning opportunity!"

@Demolishun Of course. Whoever is willing to let other peoples input run on his site because a stranger on the internet hacked away a line he shouldn't be in charge of anything thats worth attacking and getting his ass kicked on a minor project might be helpful. Otherwise I expect he's able to reflect on what repercussions using eval in his code could have and make an informed decision.

eval(["1", "+", "3"].join(''))

@Highlight

# Python

print(eval(' '.join(['1','+','3'])))

I'm lazy, but (C#)

@highlight Ha ! So close :) Hello lazy friend :)

Does bot reacts on edits ?

Where do I report a bug ?

@Godisalie If I remember right, there are other forms of eval that will only evaluate math expressions and values. I have used that to safely evaluate user inputs in Python.

https://stackoverflow.com/questions...

This would be much safer.

<@NoToJavaScript>
The best way to report a bug is to just @-mention me :)

What's wrong?

He won't recognize your edits btw.
I could implement it, but it makes the whole thing much more complicated...