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Fastest way to serialize and deserialize .NET objects
...
static void Main(string[] args)
{
var count = 100000;
var rnd = new Random(DateTime.UtcNow.GetHashCode());
Console.WriteLine("Generating {0} arrays of data...", count);
var arrays = new List<int[]>();
for (int i = 0; ...
Input and output numpy arrays to h5py
... import numpy as np
In [2]: import h5py
In [3]: a = np.random.random(size=(100,20))
In [4]: h5f = h5py.File('data.h5', 'w')
In [5]: h5f.create_dataset('dataset_1', data=a)
Out[5]: <HDF5 dataset "dataset_1": shape (100, 20), type "<f8">
In [6]: h5f.close()
You can then load that data back...
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?
...r both Android and iOS. I found if I change the timeout value from 500 to 100 I don't get the "Cannot open page" popup dialog in iOS. I also found that the timeout needs to be 50 for Android
– Rossini
Jan 18 '12 at 14:56
...
How to show and update echo on same line
...at you can run to understand its behaviour:
#!/bin/bash
for pc in $(seq 1 100); do
echo -ne "$pc%\033[0K\r"
sleep 1
done
echo
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Array.sort() doesn't sort numbers correctly [duplicate]
...arch. If you want a numerical sort, try something like this:
var a = [ 1, 100, 50, 2, 5];
a.sort(function(a,b) { return a - b; });
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Hash and salt passwords in C#
...*
* Version 3:
* PBKDF2 with HMAC-SHA256, 128-bit salt, 256-bit subkey, 10000 iterations.
* Format: { 0x01, prf (UInt32), iter count (UInt32), salt length (UInt32), salt, subkey }
* (All UInt32s are stored big-endian.)
*/
public string HashPassword(string password)
{
var prf = KeyDerivati...
DateTime2 vs DateTime in SQL Server
... is limited to 3 1/3 milliseconds, while DATETIME2 can be accurate down to 100ns.
Both types map to System.DateTime in .NET - no difference there.
If you have the choice, I would recommend using DATETIME2 whenever possible. I don't see any benefits using DATETIME (except for backward compatibility...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...。FAT表中记录了每个簇的使用状况。 如果记录数值 是 100 则说明某个文件用到了簇号为100的簇，记录数值为500则说明用到了簇号为500的簇，以此类推。簇号为0和1的簇在数据区域没有使用，但是在FAT表中有它们的定义。在 FAT12,...
Method chaining - why is it a good practice, or not?
...etting multiple properties or calling utility-type methods.
foo.setHeight(100).setWidth(50).setColor('#ffffff');
foo.moveTo(100,100).highlight();
I do not use it when one or more of the chained methods would return any object other than foo in my example. While syntactically you can chain anythi...
In C, do braces act as a stack frame?
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@pm100: The destructors will be called. That says nothing about the memory that those objects occupied.
– Donal Fellows
May 3 '10 at 16:12
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