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- Python list vs. array – when to use? - Stack Overflow
The list is the part of python's syntax so it doesn't need to be declared whereas you have to declare the array before using it You can store values of different data-types in a list (heterogeneous), whereas in Array you can only store values of only the same data-type (homogeneous)
- python - What does list [x::y] do? - Stack Overflow
If you skip the end index, like in your question, it would take elements from the start index (x), pick every yth element until it reaches the end of the list if y is positive and beginning of the list if y is negative E g l[1::-1] = [2,1] l[1::2] = [2,4,6] The default step size is 1
- How do I subtract one list from another? - Stack Overflow
However, this still has a problem from quantumSoup's version: It requires your elements to be hashable That's pretty much built into the nature of sets ** If you're trying to, e g , subtract a list of dicts from another list of dicts, but the list to subtract is large, what do you do?
- How to get all groups that a user is a member of?
List all available groups Get-WmiObject -Class Win32_Group And then list the groups the user belongs to [System Security Principal WindowsIdentity]::GetCurrent() Groups Comparison can then be done via checking through the SIDs This works for the logged in user Please correct me if I am wrong
- How to list all installed packages and their versions in Python?
For Windows 10, I think this is what you are looking for a list of available installed Pythons This is different from a list of packages as you can see below Also, on Ubuntu 20 04, I think the command is Python3 -0 list Yes, this works similar to node version manager c:\Users\user\AppData\Local\Programs\Python>py -0 list Python 0 not found!
- What does [:-1] mean do in python? - Stack Overflow
Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f readline()[:-1] Have searched on here on S O and on Google but to no a
- loops - Ways to iterate over a list in Java - Stack Overflow
The three forms of looping are nearly identical The enhanced for loop: for (E element : list) { } is, according to the Java Language Specification, identical in effect to the explicit use of an iterator with a traditional for loop
- How to list all processes services running on different ports
On windows use netstat -nba | FINDSTR "LISTEN" to get a list of processes (Pids) listening on a port if you need to find a specific port, then pipe it through findstr twice netstat -nba | FINDSTR "LISTEN" | FINDSTR "3000" In powershell you can then use Stop-Process CMDlet with the Id option to stop the process Stop-Process -Id 1234
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