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How do you Encrypt and Decrypt a PHP String?
...ss you're using an AEAD construct, ALWAYS encrypt then MAC!
bin2hex(), base64_encode(), etc. may leak information about your encryption keys via cache timing. Avoid them if possible.
Even if you follow the advice given here, a lot can go wrong with cryptography. Always have a cryptography expert re...
How to retrieve a module's path?
...t os
>>> import inspect
>>> inspect.getfile(os)
'/usr/lib64/python2.7/os.pyc'
>>> inspect.getfile(inspect)
'/usr/lib64/python2.7/inspect.pyc'
>>> os.path.dirname(inspect.getfile(inspect))
'/usr/lib64/python2.7'
...
Convert RGB to RGBA over white
...5
cobbal
64.5k1616 gold badges133133 silver badges154154 bronze badges
answered Jul 13 '11 at 0:04
gereeterger...
ArrayList vs List in C#
...
To add to the above points. Using ArrayList in 64bit operating system takes 2x memory than using in the 32bit operating system. Meanwhile, generic list List<T> will use much low memory than the ArrayList.
for example if we use a ArrayList of 19MB in 32-bit it would...
Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
static string SizeSuffix(Int64 value, int decimalPlaces = 1)
{
if (decimalPlaces < 0) { throw new ArgumentOutOfRangeException("decimalPlaces"); }
if (value < 0) { return "-" + SizeSuffix(-value); }
if (value == 0) { return string.Form...
Selecting with complex criteria from pandas.DataFrame
...(df["B"] > 50) & (df["C"] == 900)]
2 5
3 8
Name: A, dtype: int64
but you can get yourself into trouble because of the difference between a view and a copy doing this for write access. You can use .loc instead:
>>> df.loc[(df["B"] > 50) & (df["C"] == 900), "A"]
2 5...
How do I choose grid and block dimensions for CUDA kernels?
...respectively)
The maximum dimensions of each block are limited to
[512,512,64]/[1024,1024,64] (Compute 1.x/2.x or later)
Each block cannot consume more than 8k/16k/32k/64k/32k/64k/32k/64k/32k/64k registers total
(Compute 1.0,1.1/1.2,1.3/2.x-/3.0/3.2/3.5-5.2/5.3/6-6.1/6.2/7.0)
Each block cannot consu...
SFTP Libraries for .NET [closed]
...and do private key authentication. Only problem that I had was getting the 64bit version to work on windows server 2008, I needed to install vcredist_x64.exe ( http://www.microsoft.com/download/en/details.aspx?id=14632 ) on my server.
...
How do I create an empty array/matrix in NumPy?
...p.array(x)
The result will be:
In [34]: x
Out[34]: array([], dtype=float64)
Therefore you can directly initialize an np array as follows:
In [36]: x= np.array([], dtype=np.float64)
I hope this helps.
share
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Is there any way to specify a suggested filename when using data: URI?
...ownload attribute:
<a download="logo.gif" href="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7">Download transparent png</a>
Javascript only: you can save any data URI with this code:
function saveAs(uri, filename) {
var link = docume...