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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...r lower) write a function:
def merge_two_dicts(x, y):
z = x.copy() # start with x's keys and values
z.update(y) # modifies z with y's keys and values & returns None
return z
and now:
z = merge_two_dicts(x, y)
In Python 3.9.0a4 or greater (final release date approx October 202...
HTML5 best practices; section/header/aside/article elements
... None of crucial keywords1 pop up!
I wrote 3 answers:
This explanation (start here).
Concrete answers to OP’s questions.
Improved detailed HTML.
To understand the role of the html elements discussed here you have to know that some of them section the document. Each and every html document can...
How to update Python?
...you believe it is actually important to upgrade from 2.7.x to 3.3.x? I am starting to use python and have the old version installed, but since I'm beginning I wanted to learn the newest version (unless there are only very minor differences). What is your call on this? Thanks for your help.
...
How to train an artificial neural network to play Diablo 2 using visual input?
...tency in the game (eg you can play level X over and over again), you could start with N neural networks with random weights, and have each of them play the game in the following way:
1) For every possible 'move', generate a list of possible 'outcomes' (with associated probabilities)
2) For each out...
What is an application binary interface (ABI)?
...ally get resolved into an address by the assembler. This label marks the "start" of your "function" in the assembly code. In high-level code, when you "call" that function, what you're really doing is causing the CPU to jump to the address of that label and continue executing there.
In preparatio...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...stat -atnp | grep -i ":500 "
As expected, the output is blank. Now let's start a web server:
sudo python3 -m http.server 500
Now, here is the output of running netstat again:
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:500...
What is a reasonable code coverage % for unit tests (and why)? [closed]
...ster began to answer:
“The first programmer is new and just getting started with testing.
Right now he has a lot of code and no
tests. He has a long way to go;
focusing on code coverage at this time
would be depressing and quite useless.
He’s better off just getting used to
writ...
Long-lasting FB access-token for server to pull FB page info
...ient without Facebook rejecting it in the end, so, beforehand (i.e. before starting to work on my client's project), I went through the whole process of creating a page, an app, a Business Manager account, etc. I verified my business. I submitted my app for review. In my request, I was very specific...
What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...ix method.
You can use infix with multiple parameters:
string substring (start, end) map (_ toInt) mkString ("<", ", ", ">")
Curried functions are hard to use with infix notation. The folding functions are a clear example of that:
(0 /: list) ((cnt, string) => cnt + string.size)
(list ...
Optimise PostgreSQL for fast testing
...t be able to apply.
If you're not batching work into larger transactions, start. Lots of small transactions are expensive, so you should batch stuff whenever it's possible and practical to do so. If you're using async commit this is less important, but still highly recommended.
Whenever possible u...