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NSOperation vs Grand Central Dispatch
...tions and NSOperationQueues with blocks and dispatch queues. This has come from how I've used both technologies in practice, and from the profiling I've performed on them.
First, there is a nontrivial amount of overhead when using NSOperations and NSOperationQueues. These are Cocoa objects, and the...
How to use the CancellationToken property?
...}
}
That's it. You always need to handle cancellation by yourself - exit from method when it is appropriate time to exit (so that your work and data is in consistent state)
UPDATE: I prefer not writing while (!cancelToken.IsCancellationRequested) because often there are few exit points where you ...
How can I use tabs for indentation in IntelliJ IDEA?
...Indents > To Tabs
To convert tabs to spaces, you can chose "To Spaces" from the same place.
For all files
The paths in the other answers were changed a little:
File > Settings... > Editor > Code Style > Java > Tabs and Indents > Use tab character
File > Other Settings ...
Tainted canvases may not be exported
...
@markE - I loaded image data from localStorage instead of loading from file or any url, then did some manipulation to it like adding a text. Then tried to sotre back it to localStorage using toDataURL(). But it shows "Failed to execute 'toDataURL' on 'HT...
Transferring files over SSH [closed]
...e attempting to "download" to local, because if you are executing the code from a remote instance, "local" will be interpreted as the "remote", if you see what I mean. So don't run ssh first.
– PatrickT
Apr 1 '14 at 4:09
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REST API - why use PUT DELETE POST GET?
...f the oldest item would be to request:
Get: /cars/oldest
and use the ID from the resulting data to make a delete request:
Delete: /cars/id/[oldest id]
An issue with this method would be if another /cars item was added between when /oldest was requested and when the delete was issued.
...
How can I remove a substring from a given String?
Is there an easy way to remove substring from a given String in Java?
12 Answers
12...
How to add hours to current time in python
...
from datetime import datetime, timedelta
nine_hours_from_now = datetime.now() + timedelta(hours=9)
#datetime.datetime(2012, 12, 3, 23, 24, 31, 774118)
And then use string formatting to get the relevant pieces:
>>>...
Building a notification system [closed]
...once the user has seen or acted on the notification? Do you just remove it from the database or just use dates to see if the user has logged in since the notification was created?
– Jeffery Mills
Feb 17 '14 at 3:16
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NuGet Package Manager errors when trying to update
... NuGet 2.0 also may require uninstalling an older version of NuGet first.
From the NuGet 2.0 Release Notes: (http://docs.nuget.org/docs/release-notes/nuget-2.0)
Known Installation Issue
If you are running VS 2010 SP1, you might run into an installation error when attempting to upgrade NuGet if yo...