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What's the correct way to convert bytes to a hex string in Python 3?
...venient transformations like quoted-printable (fits into 7bits ascii), base64 (fits into alphanumerics), hex escaping, gzip and bz2 compression. In Python 2, you could do:
b'foo'.encode('hex')
In Python 3, str.encode / bytes.decode are strictly for bytes<->str conversions. Instead, you can...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...of std::copy over memcpy: 2.99%
My compiler is gcc 4.6.3 on Fedora 16 x86_64. My optimization flags are -Ofast -march=native -funsafe-loop-optimizations.
Code for my SHA-2 implementations.
I decided to run a test on my MD5 implementation as well. The results were much less stable, so I decided to...
Integer division with remainder in JavaScript?
... // -33, 0.5078 millisec
(a-(a%b))/b // -33, 0.6649 millisec
The above is based on 10 million trials for each.
Conclusion: Use (a/b>>0) (or (~~(a/b)) or (a/b|0)) to achieve about 20% gain in efficiency. Also keep in mind that they are all inconsistent with Math.fl...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
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1647
Unicode arrows heads:
▲ - U+25B2 BLACK UP-POINTING TRIANGLE
▼ - U+25BC BLACK DOWN-POINTI...
Why does JavaScript only work after opening developer tools in IE once?
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This solution does not work on IE 11 on Windows 7 64-bit.
– Vikram
Aug 18 '17 at 8:51
1
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Mac SQLite editor [closed]
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64
You may like SQLPro for SQLite (previously SQLite Professional - App Store).
The app has a few...
Change the maximum upload file size
...swered Jul 30 '13 at 22:17
user1641252user1641252
63155 silver badges22 bronze badges
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How to get past the login page with Wget?
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I am getting error WGET64: missing URL I put whole wget command in one line and removed `\`
– Mowgli
Mar 28 '13 at 1:23
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What is data oriented design?
... though you don't need them.
Cache Usage Example
Say each ball takes up 64 bytes and a Point takes 4 bytes. A cache slot takes, say, 64 bytes as well. If I want to update the position of 10 balls, I have to pull in 10*64 = 640 bytes of memory into cache and get 10 cache misses. If however I can w...
Set a cookie to never expire
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Beware that when 2018 comes around, if we're not using 64-bit PHP, that this will wrap around the 32-bit integer and get sent to the client as a time near zero. (This is happening right now for 25-year cookies on PHP.)
– Riking
Apr 11 '13 at...