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JavaScript string encryption and decryption?
...eroperate with another programming stack. Also, libsodium tends to be very fast without sacrificing security.
How to Use Libsodium in JavaScript?
First, you need to decide one thing:
Do you just want to encrypt/decrypt data (and maybe still somehow use the plaintext in database queries securely)...
Concatenating two one-dimensional NumPy arrays
....hstack([a, a]),
numpy.concatenate([a, a])
All those options are equally fast for large arrays; for small ones, concatenate has a slight edge:
The plot was created with perfplot:
import numpy
import perfplot
perfplot.show(
setup=lambda n: numpy.random.rand(n),
kernels=[
lambda...
How to determine if a point is in a 2D triangle? [closed]
...dinates and a very typical microprocessor where integer multiply is a very fast instruction, and division is much, much, slower. Numeric issues are also much smaller, due to no division! all calculations are exact. Thanks, Rick
– user252020
Jan 16 '10 at 4:57
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git: How to diff changed files versus previous versions after a pull?
...
If you do a straight git pull then you will either be 'fast-forwarded' or merge an unknown number of commits from the remote repository. This happens as one action though, so the last commit that you were at immediately before the pull will be the last entry in the reflog and can...
Is “IF” expensive?
...
Definitely relative... cmp/cond jmp is still faster than a mul on many processors.
– Brian Knoblauch
Nov 24 '08 at 20:26
4
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MySQL: multiple tables or one table with many columns?
... people -> staff and people -> prospect, works a charm, easy to use, fast to query.
– Vlad
Apr 20 '17 at 1:22
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How to differ sessions in browser-tabs?
... in first via AJAX.
Another is race conditions: if you can switch windows fast enough to confuse it, you may end up with a relogin1->relogin2->ajax1->ajax2 sequence, with ajax1 being made under the wrong session. Work around this by pushing login AJAX requests onto an array, and then onst...
Mapping two integers to one, in a unique and deterministic way
...unction is really one of the better ones out there considering its simple, fast and space efficient, but there is something even better published at Wolfram by Matthew Szudzik, here. The limitation of Cantor pairing function (relatively) is that the range of encoded results doesn't always stay withi...
How to render a PDF file in Android
...ple app.
For older APIs I recommend Android PdfViewer library, it is very fast and easy to use, licensed under Apache License 2.0:
pdfView.fromAsset(String)
.pages(0, 2, 1, 3, 3, 3) // all pages are displayed by default
.enableSwipe(true)
.swipeHorizontal(false)
.enableDoubletap(true)
.d...
Compiling C++11 with g++
...refer this link for feature support list in GCC.
The list changes pretty fast, keep an eye on the list, if you are waiting for particular feature to be supported.
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