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Stack smashing detected

... Stack Smashing here is actually caused due to a protection mechanism used by gcc to detect buffer overflow errors. For example in the following snippet: #include <stdio.h> void func() { char array[10]; gets(array); } int main(int argc,...
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How does collections.defaultdict work?

... Usually, a Python dictionary throws a KeyError if you try to get an item with a key that is not currently in the dictionary. The defaultdict in contrast will simply create any items that you try to access (provided of course th...
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What is a regular expression for a MAC Address?

...at" comes from Wikipedia, not the 802.3 standards body. IEEE 802-2014 actually specifies hyphens for ordinary MAC addresses (§ 8.1 ¶ 3) and colons for the obsolescent bit-reversed notation (¶ 4). Importantly, in practice, no one observes this. We simply use one or the other, but never mix them...
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Collapse sequences of white space into a single character and trim string

...low, because it creates a new object for every substring and sends method calls to each of them. – Georg Schölly Jun 23 '11 at 18:55 2 ...
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My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())

...has taught me is what is known as the "most vexing parse", which is classically demonstrated with a line such as 5 Answers ...
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FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)

...It's a FragmentPagerAdapter for non-support fragments. Android Studio Installation Please add follow Gradle dependencies dependencies { compile 'com.android.support:support-v13:+' } share | ...
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Circular list iterator in Python

... Output: a b c a b c ... (Loops forever, obviously) In order to manually advance the iterator and pull values from it one by one, simply call next(pool): >>> next(pool) 'a' >>> next(pool) 'b' share...
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When to use self over $this?

... $x = new Y(); $x->bar(); ?> The idea is that $this->foo() calls the foo() member function of whatever is the exact type of the current object. If the object is of type X, it thus calls X::foo(). If the object is of type Y, it calls Y::foo(). But with self::foo(), X::foo() is always ...
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IOCTL Linux device driver [closed]

...l, which means "input-output control" is a kind of device-specific system call. There are only a few system calls in Linux (300-400), which are not enough to express all the unique functions devices may have. So a driver can define an ioctl which allows a userspace application to send it orders. How...
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Composer killed while updating

I got a problem, I tried to install a new package to my Laravel 4 project. But when I run php composer.phar update I get this: ...