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What is a memory fence?
... locking primitives from your compiler or standard library; these are well tested, should have all the necessary memory barriers in place, and are probably quite optimized (optimizing locking primitives is tricky; even the experts can get them wrong sometimes).
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Understand the “Decorator Pattern” with a real world example
... OutputStream classes in java.io package
File file=new File("target","test.txt");
FileOutputStream fos=new FileOutputStream(file);
BufferedOutputStream bos=new BufferedOutputStream(fos);
ObjectOutputStream oos=new ObjectOutputStream(bos);
oos.write(5);
oos.writeBoolean(tru...
what is “strict mode” and how is it used?
...vior from browsers that do, so
don't rely on strict mode without feature-testing for support for the
relevant aspects of strict mode. Strict mode code and non-strict mode
code can coexist, so scripts can opt into strict mode incrementally.
Strict mode makes several changes to normal Jav...
Why does Clojure have “keywords” in addition to “symbols”?
...c identifiers that evaluate to themselves. They provide very fast equality tests...
Symbols are identifiers that are normally used to refer to something else. They can be used in program forms to refer to function parameters, let bindings, class names and global vars...
Keywords are generally...
How does origin/HEAD get set?
...te set-head origin <branch>
I see no use-case for this, except for testing
unfortunately nothing is able to set HEAD on the remote
older versions of git did not know which branch HEAD points to on the remote, only which commit hash it finally has: so it just hopefully picked a branch name p...
How to rotate portrait/landscape Android emulator? [duplicate]
...imple question, but it drove me half-mad finding this out.
Note: This was tested on Android SDK R16 and a very old keyboard, modern keyboards may behave differently.
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vertical-align with Bootstrap 3
...ative margins. Just add margin-right: -4px; to the .vcenter class. Tested and working with all browsers (except for the old IE6 and IE7...but who cares of prehistory ;) )
– Frank
Aug 17 '15 at 14:54
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Peak signal detection in realtime timeseries data
...Filter),
stdFilter = np.asarray(stdFilter))
Below is the test on the same dataset that yields the same plot as in the original answer for R/Matlab
# Data
y = np.array([1,1,1.1,1,0.9,1,1,1.1,1,0.9,1,1.1,1,1,0.9,1,1,1.1,1,1,1,1,1.1,0.9,1,1.1,1,1,0.9,
1,1.1,1,1,1.1,1,0.8,0.9,1...
Django: How to completely uninstall a Django app?
...but looks really secure when you have to work with many deployments (like: test stage, BETA version and production - in my case)
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Convert a PHP script into a stand-alone windows executable
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@Tom: sure, there's a new version and if you feel like testing it I can give you a download link. (No malware, I promise.) It's actually a lot better now and it's php 7.2, plus I think it will be capable of handling other languages. My gmail is kellnerdenes.
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