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What is an efficient way to implement a singleton pattern in Java? [closed]
...s to be final. In this case, I've used the final keyword to let the users know it is final. Then you need to make the constructor private to prevent users to create their own Foo. Throwing an exception from the constructor prevents users to use reflection to create a second Foo. Then you create a pr...
Saving a Numpy array as an image
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@TomášGavenčiak - scipy.misc.imsave is now deprecated in the newer versions of Scipy. An alternative a few comments below is to use imageio.imwrite('image_file.jpg', array)
– Psi-Ed
May 3 at 6:17
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Why does printf not flush after the call unless a newline is in the format string?
...sing fflush:
printf("Buffered, will be flushed");
fflush(stdout); // Will now print everything in the stdout buffer
Edit: From Andy Ross's comment below, you can also disable buffering on stdout by using setbuf:
setbuf(stdout, NULL);
or its secure version setvbuf as explained here
setvbuf(std...
dyld: Library not loaded: @rpath/libswift_stdlib_core.dylib
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Ad 2: It's now called "ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES" (see comment below accepted answer).
– Raphael
Feb 16 '17 at 8:27
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“Pretty” Continuous Integration for Python
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Nose now includes the xunit plugin by default - nosetests --with-xunit
– dbr
Oct 13 '09 at 1:01
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How to check if an intent can be handled from some activity?
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well, with android api 30+, it doesn't always work now)
– user924
Jun 24 at 14:30
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“unrecognized selector sent to instance” error in Objective-C
...auses the numberButtonClicked: method to be sent to another object that is now occupying the memory that the view controller was previously occupying...
Make sure you're properly retaining/releasing your view controller.
sh...
How to create border in UIButton?
...te image you can set tint color of the button and the border will change:
Now the border will highlight with the rest of the button when touched.
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How to discard local changes in an SVN checkout?
... directory is not needed, you can get rid of it. Your working directory is now both git and subversion repository:
$ mv TMP/.git .
$ rm -rf TMP/
You can now use powerful and convenient git add -p to interactively choose exactly what you want to share, and commit them to your git repository. If you...
Order of event handler execution
...Ah, I see where I'm going wrong: "Event handlers are delegates, right?". I now know they're not. Have written myself an event that fires handlers in reverse order, just to prove it to myself :)
– Rawling
Mar 1 '10 at 10:56
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