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'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?

... and tests whether both expressions are logically True while & (when used with True/False values) tests if both are True. In Python, empty built-in objects are typically treated as logically False while non-empty built-ins are logically True. This facilitates the c...
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How to check that a string is an int, but not a double, etc.?

... (ctype_digit($testcase)) { echo "The string $testcase consists of all digits.\n"; } else { echo "The string $testcase does not consist of all digits.\n"; } } ?> The above example will output: The string 1820.20 does not consist of all digits. The string 10002 consists...
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How to have Emacs auto-refresh all buffers when files have changed on disk?

...an my emacs buffers (en masse). Is there any way to tell emacs to refresh all the buffers from disk in one fell swoop, instead of having to do each one individually by reloading the file? ...
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Why is the .bss segment required?

...Imagine that your C program runs on an embedded system, where the code and all constants are saved in true ROM (flash memory). In such systems, an initial "copy-down" must be executed to set all static storage duration objects, before main() is called. It will typically go like this pseudo: for(i=0...
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How may I sort a list alphabetically using jQuery?

I'm a bit out of my depth here and I'm hoping this is actually possible. 10 Answers 10...
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Detect browser or tab closing

...closed. Also, the onbeforeunload is non-standard, so it's not supported by all browsers. – Guffa Oct 8 '10 at 8:45 8 ...
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How to use a wildcard in the classpath to add multiple jars? [duplicate]

...ldcard character *, which is considered equivalent to specifying a list of all the files in the directory with the extension .jar or .JAR. For example, the class path entry foo/* specifies all JAR files in the directory named foo. A classpath entry consisting simply of * expands to a list of all the...
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Why is it impossible to build a compiler that can determine if a C++ function will change the value

... @mrsoltys, quantum computers are "only" exponentially faster for some problems, they can not solve undecidable problems. – zch Jul 1 '13 at 18:52 8 ...
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Classpath including JAR within a JAR

...of) to do that. The first is One-Jar, which uses a special classloader to allow the nesting of jars. The second is UberJar, (or Shade), which explodes the included libraries and puts all the classes in the top-level jar. I should also mention that UberJar and Shade are plugins for Maven1 and Mave...
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What are the benefits of dependency injection containers?

...e under the benefits of configuring the DI side of an IoC though. Additionally if your app is used either at multiple sites (with different server and component configuration) or has a changing configuration on the live environment you can use the later stages of testing to verify that the app will...