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Keep only date part when using pandas.to_datetime
...t will be slow).
A better performing alternative is to use df['dates'].dt.floor('d'). Strictly speaking, it does not "keep only date part", since it just sets the time to 00:00:00. But it does work as desired by the OP when, for instance:
printing to screen
saving to csv
using the column to group...
Appropriate datatype for holding percent values?
...0000 (assuming that is the cap) and never go below 0 (assuming that is the floor). If you are going to store their face value (e.g. 100.00% is stored as 100.00), then you should use decimal(5,2) with an appropriate CHECK constraint. Combined with a good column name, it makes it clear to other develo...
ArithmeticException: “Non-terminating decimal expansion; no exact representable decimal result”
...gMode are Enum constants, you could choose any of this
UP, DOWN, CEILING, FLOOR, HALF_DOWN, HALF_EVEN, HALF_UP
In this Case HALF_UP, will have this result:
2.4 = 2
2.5 = 3
2.7 = 3
You can check the RoundingMode information here: http://www.javabeat.net/precise-rounding-of-decimals-using-r...
How do I get my Python program to sleep for 50 milliseconds?
...g: The above comment is about Python 2 where 50/1000 returned 0 because of floor division (python 3 code: 50//1000). For more information please consider: stackoverflow.com/a/7075121/4575793
– Cadoiz
Aug 9 at 12:48
...
Way to get all alphabetic chars in an array in PHP?
...a >= 0) {
$sa = chr($na % 26 + 65) . $sa;
$na = floor($na / 26) - 1;
}
return $sa;
}
$alphabet = Array();
for ($na = 0; $na < 125; $na++) {
$alphabet[]=generateAlphabet($na);
}
print_r($alphabet);
your answer will look lik...
Responsive css background images
I have a website (g-floors.eu) and I want to make the background (in css I have defined a bg-image for the content) also responsive. Unfortunately I really don't have any idea on how to do this except for one thing that I can think of but it's quite a workaround. Creating multiple images and then us...
Format number to 2 decimal places
...stion that this is what she wanted to do. there are many ways of rounding (floor, ceiling, away-from-zero, toward-zero, half-up, half-down, half-even). they are appropriate in different contexts.
– Kip
Jul 15 '14 at 18:00
...
Convert from enum ordinal to enum type
... I use the ordinal method to get the int value. After I get it in my other JSP page, I need to convert it to back to an ReportTypeEnum so that I can continue passing it.
...
java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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缓存任何对象，你可以不受限制的缓存部分jsp页面或HTTP请求，任何java对象都可以缓存。
拥有全面的API--OSCache API给你全面的程序来控制所有的OSCache特性。
永久缓存--缓存能随意的写入硬盘，因...
Count number of days between two dates
... between two dates (DateTime objects):
((end_at - start_at).to_f / 1.day).floor
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