大约有 30,000 项符合查询结果（耗时：0.0450秒） [XML]
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...*
strCString="2003-10-27 6:24:37"; //CString--->COleDateTime
COleVariant vtime(strCString);
vtime.ChangeType(VT_DATE);
COleDateTime time4=vtime;
COleDateTime time1(1977,4,16,2,2,2); //COleDataTime--->CTime
SYSTEMTIME systime;...
An efficient way to transpose a file in Bash
...ile
1 0 1 2
2 3 4 5
3 6 7 8
4 9 10 11
1 0 1 2
$ wc -l < file
10000
$ time perl test.pl file >/dev/null
real 0m0.480s
user 0m0.442s
sys 0m0.026s
$ time awk -f test.awk file >/dev/null
real 0m0.382s
user 0m0.367s
sys 0m0.011s
$ time perl test.pl file >/dev/null
...
Get the current time in C
I want to get the current time of my system. For that I'm using the following code in C:
9 Answers
...
How to calculate moving average using NumPy?
...nder active development.
Following this advice would lead you to scikits-timeseries; however, that package is no longer under active development; In effect, Pandas has become, AFAIK, the de facto NumPy-based time series library.
Pandas has several functions that can be used to calculate a moving ...
How to see query history in SQL Server Management Studio
... be helpful to join on sys.dm_exec_query_stats and order by last_execution_time:
SELECT t.[text], s.last_execution_time
FROM sys.dm_exec_cached_plans AS p
INNER JOIN sys.dm_exec_query_stats AS s
ON p.plan_handle = s.plan_handle
CROSS APPLY sys.dm_exec_sql_text(p.plan_handle) AS t
WHERE t.[text] ...
How to truncate the time on a DateTime object in Python?
What is a classy way to way truncate a python datetime object?
16 Answers
16
...
Cost of len() function
...
It's O(1) (constant time, not depending of actual length of the element - very fast) on every type you've mentioned, plus set and others such as array.array.
share
...
Regular expression to allow spaces between words
...at least one word character
( \w+)* is a group that is repeated 0 or more times. In the group it expects a space followed by a series of at least one word character
$ matches the end of the string
share
|
...
RegEx match open tags except XHTML self-contained tags
...d. There are disputes about this answer’s content being resolved at this time. It is not currently accepting new interactions.
You can't parse [X]HTML with regex. Because HTML can't be parsed by ...
String output: format or concat in C#?
... This is just totally wrong. In a web development environment, often times your string generation code will be deep in both your model, views and controllers and can get called tens of thousands of times per page load. Reducing the length of time spend evaluating string generation code by 50% ...