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How do I check the difference, in seconds, between two dates?
...es, use total_seconds like this:
import datetime as dt
a = dt.datetime(2013,12,30,23,59,59)
b = dt.datetime(2013,12,31,23,59,59)
(b-a).total_seconds()
86400.0
#note that seconds doesn't give you what you want:
(b-a).seconds
0
...
How to deal with SettingWithCopyWarning in Pandas?
I just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this:
...
Resizing SVG in html?
...
185
Open your .svg file with a text editor (it's just XML), and look for something like this at th...
Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Linux 操作系统是UNIX 操作系统的一种克隆系统。它诞生于1991 年的10 月5 日（这是第一次正式向外公布的时间...Linux 的诞生和发展
Linux 操作系统是UNIX 操作系统的一种克隆系统。它诞生于1991 年的10 月5 日（这是第一次正式向外公...
How to initialise memory with new operator in C++?
...ut it actually has special syntax for value-initializing an array:
new int[10]();
Note that you must use the empty parentheses — you cannot, for example, use (0) or anything else (which is why this is only useful for value initialization).
This is explicitly permitted by ISO C++03 5.3.4[expr.new]...
Why does multiprocessing use only a single core after I import numpy?
...
150
After some more googling I found the answer here.
It turns out that certain Python modules (n...
is it possible to select EXISTS directly as a bit?
... you'll have to use a workaround.
If you must return a conditional bit 0/1 another way is to:
SELECT CAST(
CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1
ELSE 0
END
AS BIT)
Or without the cast:
SELECT
CASE
WHEN EXISTS( SELECT 1 FROM theTa...
Printf width specifier to maintain precision of floating-point value
... in:
#include <float.h>
int Digs = DECIMAL_DIG;
double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.428571428571428492127e-01
But let's dig deeper ...
Mathematically, the answer is "0.142857 142857 142857 ...", but we are using finite precision floating point numbers.
L...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
...
281
+100
I create...