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Add missing dates to pandas dataframe
... by date:
df = pd.DataFrame({
'timestamps': pd.to_datetime(
['2016-11-15 1:00','2016-11-16 2:00','2016-11-16 3:00','2016-11-18 4:00']),
'values':['a','b','c','d']})
df.index = pd.DatetimeIndex(df['timestamps']).floor('D')
df
yields
timestamps values
2016-1...
Get query from java.sql.PreparedStatement [duplicate]
...4JLogger&profileSQL=true
Then you will get the SQL statement below:
2016-01-14 10:09:43 INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 1 connection: 19130945 statement: 999 resultset: 0
2016-01-14 10:09:43 INFO MySQL - QUERY created: Thu Jan 14 10:09:43 CST 2016 duration...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...允许代码段为可写，即允许修改程序。在代码段中，也有可能包含一些只读的常数变量，例如字符串常量等。
堆（heap）：堆是用于存放进程运行中被动态分配的内存段，它的大小并不固定，可动态扩张或缩减。当进程调用malloc...
Parse JSON in TSQL
...
Update: As of SQL Server 2016 parsing JSON in TSQL is now possible.
Natively, there is no support. You'll have to use CLR. It is as simple as that, unless you have a huge masochistic streak and want to write a JSON parser in SQL
Normally, folk ask...
How to get the number of days of difference between two dates on mysql?
...the values are used in the calculation.
which results in
select datediff('2016-04-14 11:59:00', '2016-04-13 12:00:00')
returns 1 instead of expected 0.
Solution is using select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
(note the opposite order of arguments compared to datedi...
Converting a String to DateTime
...eTime(format: "ddMMyyyy"); // {29.02.1996 00:00:00}
mydate = "2016 3";
date = mydate.ToDateTime("yyyy M"); // {01.03.2016 00:00:00}
mydate = "2016 12";
date = mydate.ToDateTime("yyyy d"); // {12.01.2016 00:00:00}
mydate = "2016/31/05 13:...
How to convert index of a pandas dataframe into a column?
...ke:
>>> df
val
tick tag obs
2016-02-26 C 2 0.0139
2016-02-27 A 2 0.5577
2016-02-28 C 6 0.0303
and you want to convert the 1st (tick) and 3rd (obs) levels in the index into columns, you would do:
>>> df.reset_index(level=['tick...
How do I get an ISO 8601 date on iOS?
...:
let formatter = ISO8601DateFormatter()
let date = formatter.date(from: "2016-08-26T12:39:00Z")
let string = formatter.string(from: Date())
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How to get the start time of a long-running Linux process?
... STARTED
1 Tue Jun 7 01:29:38 2016 /sbin/init
2 Tue Jun 7 01:29:38 2016 [kthreadd]
3 Tue Jun 7 01:29:38 2016 [ksoftirqd/0]
5 Tue Jun 7 01:29:38 2016 [kworker/0:0H]
7 Tue J...
向CListView控件发LVN_COLUMNCLICK消息 - C/C++ - 清泛网 - 专注C/C++及内核技术
...OLUMNCLICK消息在窗体函数里向控件ListView发消息，让它根据指定列排序。WM_NOTIFY消息是控件发向窗体的，MFC窗体再向控件反射部分消息，让控件自己处理：...在窗体函数里向控件ListView发消息，让它根据指定列排序。
WM_NOTIFY消息...