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Relative imports in Python 3
...h # if you haven't already done so
file = Path(__file__).resolve()
parent, root = file.parent, file.parents[1]
sys.path.append(str(root))
# Additionally remove the current file's directory from sys.path
try:
sys.path.remove(str(parent))
except ValueError: # Already removed
pass
Replace the...
Python recursive folder read
...
Make sure you understand the three return values of os.walk:
for root, subdirs, files in os.walk(rootdir):
has the following meaning:
root: Current path which is "walked through"
subdirs: Files in root of type directory
files: Files in root (not in subdirs) of type other than directory...
What did MongoDB not being ACID compliant before v4 really mean?
...a transactional database in conjunction with MongoDB. It is common to use MySQL to provide transactions for the things that absolutely need them while letting MongoDB (or any other NoSQL) do what it does best.
If my solution from #1 does not work in the long run, I will investigate further into co...
When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies
...ch traversal strategy works. Use the following tree as an example.
The root of the tree is 7, the left most node is 0, the right most node is 10.
Pre-order traversal:
Summary: Begins at the root (7), ends at the right-most node (10)
Traversal sequence: 7, 1, 0, 3, 2, 5, 4, 6, 9, 8, 10
In-...
Ukkonen's suffix tree algorithm in plain English
...ts.
What we are building, is basically like a search trie. So there
is a root node, edges going out of it leading to new nodes, and
further edges going out of those, and so forth
But: Unlike in a search trie, the edge labels are not single
characters. Instead, each edge is labeled using a pair of ...
How do I handle the window close event in Tkinter?
... a concrete example:
import tkinter as tk
from tkinter import messagebox
root = tk.Tk()
def on_closing():
if messagebox.askokcancel("Quit", "Do you want to quit?"):
root.destroy()
root.protocol("WM_DELETE_WINDOW", on_closing)
root.mainloop()
...
Spring Data: “delete by” is supported?
...d way for your application because many queries will be execute for single MYSQL delete query.
This is another optimized way for delete query code because only one delete query will execute by using below customized methods.
@NamedNativeQueries({
@NamedNativeQuery(name = "Abc.deleteByCreatedTi...
How do you track record relations in NoSQL?
... not need A and you have less than Peta bytes just leave it, go ahead with MySql or Postgres.
good luck
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Why do we check up to the square root of a prime number to determine if it is prime?
... not, why do we have to test whether it is divisible only up to the square root of that number?
13 Answers
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SQL: How to perform string does not equal
... Just noticed that the <=> operator only exists in the MySQL world, for more info see what is <=>
– Top-Master
Apr 27 '19 at 6:18
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