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How do I sort an observable collection?
...d a relevant blog entry that provides a better answer than the ones here:
http://kiwigis.blogspot.com/2010/03/how-to-sort-obversablecollection.html
UPDATE
The ObservableSortedList that @romkyns points out in the comments automatically maintains sort order.
Implements an observable collection ...
Add timestamps to an existing table
...erences
t.remove_belongs_to
t.remove_index
t.remove_timestamps
end
http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/Table.html
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When to use Cast() and Oftype() in Linq
...
http://solutionizing.net/2009/01/18/linq-tip-enumerable-oftype/
Fundamentally, Cast() is implemented like this:
public IEnumerable<T> Cast<T>(this IEnumerable source)
{
foreach(object o in source)
yield re...
How to convert local time string to UTC?
...tetime.fromtimestamp(1571595618.0, tz=timezone.utc)
for details see:
see: https://blog.ganssle.io/articles/2019/11/utcnow.html
original answer (from 2010):
The datetime module's utcnow() function can be used to obtain the current UTC time.
>>> import datetime
>>> utc_datetime = da...
Debian/Linux下安装OpenJDK8 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...装包因为手工安装，所以部分依赖包需要自己下载。wget http: snapshot debian org archive debian-security 202202 因为Debian11的源里不再带OpenJDK8了，需要手工来安装。
下载安装包
因为手工安装，所以部分依赖包需要自己下载。
wget http:...
How to print a int64_t type in C
... can perhaps use an open source <inttypes.h> (and <stdint.h>): http://code.google.com/p/msinttypes/
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?
...
TimeSpan.FromSeconds(80);
http://msdn.microsoft.com/en-us/library/system.timespan.fromseconds.aspx
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How to create circle with Bézier curves?
...inuous Bezier curves" Computer Aided Geometric
Design (#7 1990 pp. 33-41). http://www.sciencedirect.com/science/article/pii/016783969090019N (non free article)
Also see the non-paywalled article at http://spencermortensen.com/articles/bezier-circle/
Browsers and Canvas Element.
Note that some bro...
Servlet for serving static content
....example;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class DefaultWrapperServlet extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
RequestDispatcher rd = ge...
Why doesn't Java offer operator overloading?
...++ Matrix object":
// C++ YMatrix matrix implementation on CodeProject
// http://www.codeproject.com/KB/architecture/ymatrix.aspx
// A, B, C, D, E, F are Matrix objects;
E = A * (B / 2) ;
E += (A - B) * (C + D) ;
F = E ; // deep copy of the matrix
// Java JAMA matrix implementat...