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How can I handle time zones in my webapp?
...down and default to the device timezone (because the user doesn't need to know about them). In either case, have a setting in the app that allows the user to manually show/hide the timezone dropdown.
To summarise the above:
On first run, save what timezone the device is set to.
Use that timezon...
How to prevent form resubmission when page is refreshed (F5 / CTRL+R)
...just implementing the Post / Redirect / Get pattern, so, I don't remember now what exactly was tripping me up. Thanks again for circling back, though.
– aLearner
Jun 29 '13 at 11:07
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This type of CollectionView does not support changes to its SourceCollection from a thread different
... mistaken, in WPF 4.5, you should be able to do this without any problem.
Now to solve this, you should use the synchronization context. Before you launch the thread, you have to store the synchronization context in the ui thread.
var uiContext = SynchronizationContext.Current;
Then you use it i...
Read url to string in few lines of java code
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Now that some time has passed since the original answer was accepted, there's a better approach:
String out = new Scanner(new URL("http://www.google.com").openStream(), "UTF-8").useDelimiter("\\A").next();
If you want a s...
Best practices for in-app database migration for Sqlite
...updates in version 2,3,4. The end user only downloaded your version 1, and now upgrade to version 5. What should you do?
– Bagusflyer
Apr 10 '14 at 4:09
6
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What's the better (cleaner) way to ignore output in PowerShell? [closed]
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I just did some tests of the four options that I know about.
Measure-Command {$(1..1000) | Out-Null}
TotalMilliseconds : 76.211
Measure-Command {[Void]$(1..1000)}
TotalMilliseconds : 0.217
Measure-Command {$(1..1000) > $null}
TotalMilliseconds : 0.2478
Measure-Comm...
How do I append one string to another in Python?
...ference to a string and you concatenate another string to the end, CPython now special cases this and tries to extend the string in place.
The end result is that the operation is amortized O(n).
e.g.
s = ""
for i in range(n):
s+=str(i)
used to be O(n^2), but now it is O(n).
From the source...
Tracking the script execution time in PHP
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Just adding a small update: This function is now supported on Windows as well.
– ankush981
Jun 21 '15 at 7:30
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What does “#define _GNU_SOURCE” imply?
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Of course, everyone knows the real reason to define _GNU_SOURCE is in order to get strfry and memfrob.
– user4815162342
Mar 9 '13 at 20:40
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How do I correctly clone a JavaScript object?
...ded to Object.prototype, or other intermediate prototypes, that you don't know about? In that case, you will copy attributes you shouldn't, so you need to detect unforeseen, non-local attributes with the hasOwnProperty method.
In addition to non-enumerable attributes, you'll encounter a tougher pro...