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Converting strings to floats in a DataFrame
...le
GHI Temp Power Day_Type
2016-03-15 06:00:00 -7.99999952505459e-7 18.3 0 NaN
2016-03-15 06:01:00 -7.99999952505459e-7 18.2 0 NaN
2016-03-15 06:02:00 -7.99999952505459e-7 18.3 0 NaN
2016-03-15 06:03:00 -7.99999952505459e-7 18.3 ...
Regular expression to match numbers with or without commas and decimals in text
... .0000023456 .0000023456000 '
' .0005872 .0005872000 .00503 .00503000 ',
' .068 .0680000 .8 .8000 .123456123456 .123456123456000 ',
' .657 .657000 .45 .4500000 .7 .70000 0.0000023230000 000.0000023230000 ',
' 0.0081000 0000...
Bash command to sum a column of numbers [duplicate]
...o the job.
$ wc -l file
49999998 file
$ time paste -sd+ file | bc
1448700364
real 1m36.960s
user 1m24.515s
sys 0m1.772s
$ time awk '{s+=$1}END{print s}' file
1448700364
real 0m45.476s
user 0m40.756s
sys 0m0.287s
...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...能测试
原文地址：http://blog.csdn.net/gongxinheng/archive/2010/03/27/5421914.aspx
by: HengStar 2010/3/27
我是一名游戏开发程序员，研究C++ Boost库已经有一小段时日了，学的越多愈发愈感觉出它的强大，每次学习后在实战项目中高效地使用，...
How to compare two dates in php
How to compare two dates in php if dates are in format '03_01_12' and '31_12_11' .
15 Answers
...
Python datetime to string without microsecond component
...th the UTC time strings returned elsewhere, the desired format is 2011-11-03 11:07:04 (followed by +00:00 , but that's not germane).
...
JavaScript function to add X months to a date
...(d, 1);
Mon Mar 28 2016 18:00:00 GMT-0600 (CST)
> d.toISOString()
"2016-03-29T00:00:00.000Z"
Update for non-UTC dates: (by A.Hatchkins)
function addMonths (date, count) {
if (date && count) {
var m, d = (date = new Date(+date)).getDate()
date.setMonth(date.getMonth() + count...
How do I convert dates in a Pandas data frame to a 'date' data type?
...Out[31]:
a time
0 1 2013-01-01
1 2 2013-01-02
2 3 2013-01-03
In [32]: df['time'] = df['time'].astype('datetime64[ns]')
In [33]: df
Out[33]:
a time
0 1 2013-01-01 00:00:00
1 2 2013-01-02 00:00:00
2 3 2013-01-03 00:00:00
...
PHP DateTime::modify adding and subtracting months
...01 +1 Month -1 Day"));
// 2013-02-28
echo Date("Y-m-d", strtotime("2013-03-01 +1 Month -1 Day"));
// 2013-03-31
echo Date("Y-m-d", strtotime("2013-04-01 +1 Month -1 Day"));
// 2013-04-30
echo Date("Y-m-d", strtotime("2013-05-01 +1 Month -1 Day"));
// 2013-05-31
echo Date("Y-m-d", strtoti...
How to compare two strings in dot separated version format in Bash?
....Paused until further notice.
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