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How do I perform HTML decoding/encoding using Python/Django?
... appropriate for strings encoded with django.utils.html.escape. More generally, it is a good idea to stick with the standard library:
# Python 2.x:
import HTMLParser
html_parser = HTMLParser.HTMLParser()
unescaped = html_parser.unescape(my_string)
# Python 3.x:
import html.parser
html_parser = ht...
How to sort a list of strings numerically?
I know that this sounds trivial but I did not realize that the sort() function of Python was weird. I have a list of "numbers" that are actually in string form, so I first convert them to ints, then attempt a sort.
...
Method Resolution Order (MRO) in new-style classes?
... G
Did you get A B D C E F G?
x = A()
x.m()
After a lot of trial an error, I came up with an informal graph theory interpretation of C3 linearization as follows: (Someone please let me know if this is wrong.)
Consider this example:
class I(G):
def m(self):
print("I")
su...
Custom thread pool in Java 8 parallel stream
...
Rocky, I'm not seeing any errors. Knowing the Java version and the exact line will help. The "InterruptedException" suggests the try/catch around the sleep is not closed properly in your version.
– Tod Casasent
A...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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IntelliJ IDEA: Move line?
...Forward : Ctrl + Alt + → (Right-Arrow)
(17) Next/previous highlighted error
F2 or (Shift + F2)
(18) Open Java Doc
Select specific method name and press,
Ctrl + Q
(19) Find All commands
Ctrl + Shift + A
(20) Move Line Up/Down
shift + alt + ↑/↓
Thanks...
...
How to get error message when ifstream open fails
How to get error message as string?
4 Answers
4
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'Java' is not recognized as an internal or external command
...to check the current version of Java in which I am running, I received the error "java is not recognized as an internal or external command, operable program or batch file.".
...
Detect when an image fails to load in Javascript
...) {
var tester=new Image();
tester.onload=imageFound;
tester.onerror=imageNotFound;
tester.src=URL;
}
function imageFound() {
alert('That image is found and loaded');
}
function imageNotFound() {
alert('That image was not found.');
}
testImage("http://foo.com/bar.jpg");
...
How is a CRC32 checksum calculated?
... it is extremely difficult to find a polynomial that detects different bit errors effectively.
You can think of the CRC-32 as a series of "Binary Arithmetic with No Carries", or basically "XOR and shift operations". This is technically called Polynomial Arithmetic.
CRC primer, Chapter 5
To bett...