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Logical operators for boolean indexing in Pandas
..., True])
>>> np.bitwise_and(a1, a2)
array([0, 0, 0, 1], dtype=int32)
And since NumPy (and similarly pandas) does different things for boolean (Boolean or “mask” index arrays) and integer (Index arrays) indices the results of indexing will be also be different:
>>> a3 = np.a...
Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu
I am running the 32bit version of Ubuntu 10.10 and trying to cross compile to a 64 bit target. Based on my research, I have installed the g++-multilib package.
...
How to drop SQL default constraint without knowing its name?
In Microsoft SQL Server, I know the query to check if a default constraint exists for a column and drop a default constraint is:
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setuptools: package data folder location
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alexsmail
5,26377 gold badges3232 silver badges5252 bronze badges
answered Oct 23 '14 at 17:31
polvoazulpolvoazul
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Python 2.7: Print to File
...7
Rémi
43211 gold badge1313 silver badges1919 bronze badges
answered Feb 16 '12 at 17:32
Simon BergotSimon Be...
Submitting a multidimensional array via POST with php
...pped.
– Fireflight
Mar 15 '10 at 13:32
How about if you are cloning text fields and have no control in adding names fo...
Select the values of one property on all objects of an array in PowerShell
... 0.079
30.97 $objects | Select-Object -ExpandProperty Name 0.140
32.76 $objects | % Name 0.148
Windows PowerShell v5.1.18362.145
Comparing property-value extraction methods with 10000 input objects, averaged over 10 runs...
Factor Command ...
Show/Hide the console window of a C# console application
...Here’s how:
using System.Runtime.InteropServices;
[DllImport("kernel32.dll")]
static extern IntPtr GetConsoleWindow();
[DllImport("user32.dll")]
static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
const int SW_HIDE = 0;
const int SW_SHOW = 5;
var handle = GetConsoleWindow();
// H...
Detecting when a div's height changes using jQuery
I've got a div that contains some content that's being added and removed dynamically, so its height is changing often. I also have a div that is absolutely positioned directly underneath with javascript, so unless I can detect when the height of the div changes, I can't reposition the div below it.
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SparseArray vs HashMap
...
Collection<V> values;
}
Class = 12 + 8 * 4 = 48 bytes
Entry = 32 + 16 + 16 = 64 bytes
Array = 20 + 1000 * 64 = 64024 bytes
Total = 64,136 bytes
Source: Android Memories by Romain Guy from slide 90.
The numbers above are the amount of memory (in bytes) allocated on heap by JVM.
They ma...