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Draw line in UIView
...ineWidth(context, 2.0f);
CGContextMoveToPoint(context, 0.0f, 0.0f); //start at this point
CGContextAddLineToPoint(context, 20.0f, 20.0f); //draw to this point
// and now draw the Path!
CGContextStrokePath(context);
}
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What is the difference between range and xrange functions in Python 2.X?
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@SIslam If it knows the start, end, and current, it can compute the next, one at a time.
– Justin Meiners
Jan 15 '17 at 4:20
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HTTP Error 404.3 - Not Found" while browsing wcf service on Windows Server 2008(64bit)
...you will also have to do the following after adding the Windows feature: - Start inetmgr - Open "Handler mappings" - Check if the svc-ISAPI mappings for extension *.svc are present. If not, use the "Revert To Parent" action to copy them from the parent website. Note that this assumes that custom han...
“for” vs “each” in Ruby
...doesn't, unless it was already defined as a local variable before the loop started.
Other than that, for is just syntax sugar for the each method.
When @collection is nil both loops throw an exception:
Exception: undefined local variable or method `@collection' for main:Object
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Get specific ArrayList item
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We print the value using mainList.get(index) where index starts with '0'.
For Example: mainList.get(2) prints the 3rd element in the list.
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What is the best comment in source code you have ever encountered? [closed]
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I'm ganna start using up instead of ex from now on XD
– Ammar
Sep 5 '09 at 23:02
23
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Generating a PNG with matplotlib when DISPLAY is undefined
...at @Ivo Bosticky said which can be overlooked. Put these lines at the VERY start of the py file.
import matplotlib
matplotlib.use('Agg')
Or one would get error
*/usr/lib/pymodules/python2.7/matplotlib/__init__.py:923: UserWarning: This call to matplotlib.use() has no effect
because the the...
`static` keyword inside function?
...een called because $has_run would still be equal to true when the function starts the second time.
The usage of the static keyword in this context is explained in the PHP manual here: http://php.net/manual/en/language.variables.scope.php
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Fragment onResume() & onPause() is not called on backstack
I have multiple fragment inside an activity. On a button click I am starting a new fragment, adding it to backstack. I naturally expected the onPause() method of current Fragment and onResume() of new Fragment to be called. Well it is not happening.
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My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
... 10 years, and yet it's not prevalent.
The WebSocket standard was able to start with a fresh approach, bearing those restrictions in mind, and hopefully having learned some lessons from them.
Some WebSocket implementations use Flash (or possibly Silverlight and/or Java) as their fallback when WebS...