To be fair, I had to read the linked question on SO to understand what was the possible alternative. I do expect that if I use += it is in place.
On the other hand with Python and Java I always keep forgetting if everything is by value or by reference, I really miss some extra clarity of the languages where you can see if something is mutable when passed to a function
The “Solution” link gives the solution to the exercise, the “Explanation” link explains the Python data model concepts behind the exercise. If some parts are hard to understand let me know.
As I would expect. Does the result surprise people?
If so, rename the arguments to
fun()to be r, s, t, and u. Just inside the function. Does the obvious two scopes now make it clearer?The fact that
x += ymodifieslists in place might be surprising if you’re expecting it to be exactly equivalent tox = x + y.Yes, that is a surprise to many, in other languages ‘x+=y’ and ‘x=x+y’ are the same.
To be fair, I had to read the linked question on SO to understand what was the possible alternative. I do expect that if I use
+=it is in place.On the other hand with Python and Java I always keep forgetting if everything is by value or by reference, I really miss some extra clarity of the languages where you can see if something is mutable when passed to a function
Looks like this whole post is an ad for someone’s project. The links hardly have to do with the post.
The “Solution” link gives the solution to the exercise, the “Explanation” link explains the Python data model concepts behind the exercise. If some parts are hard to understand let me know.
Yeah and the link went to a site with in-browser remote code execution. Dodgy.
Clicking Play or GetURL did nothing.
Luckily my browser is as old as me. And was too grumpy to actually do what it’s told.