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What is an abstract class in PHP?
... public $a = 'India';
public function f1() {
echo "F1 Method Call";
}
public function f2() {
echo "F2 Method Call";
}
}
$b = new B();
echo $b->test1() . "<br/>";
echo $b->a . "<br/>";
echo $b->test2() . "<br/>";
echo $b->f1() . "<br...
Eclipse Workspaces: What for and why?
...to eclipse. Previously I've been using this novel operating system concept called a "folder". A folder is a place on my file system I place a project. It can have sub-folders from there. You can even place multiple folders of related projects inside one parent folder. So, what would I do without Ecl...
汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...般的程序是由 DEBUG 直接调用的，所以用 INT 20 返回，用 CALL 指令所调用的程序则改用返回指令RET,RET会把控制权转移到栈顶所指的地址，而该地址是由调用此程序的 CALL指令所放入的。
各模块都搞定了，然后我们把子程序组...
Bootstrap control with multiple “data-toggle”
... There's some difference though: a data-toggle="tooltip" inside the main (button) element will show neatly outside of that element whereas it will overlap with that element if set inside a span wrapper.
– Benjamin
Aug 23 '15 at 9:04
...
ImportError in importing from sklearn: cannot import name check_build
...
Check if there is a file called "sklearn" in the same folder. Try running from a different folder. Solved it for me (my fault). Find file with <ls | grep -i "sklearn">
– Punnerud
Mar 3 '18 at 11:50
...
How to find keys of a hash?
...
There is function in modern JavaScript (ECMAScript 5) called Object.keys performing this operation:
var obj = { "a" : 1, "b" : 2, "c" : 3};
alert(Object.keys(obj)); // will output ["a", "b", "c"]
Compatibility details can be found here.
On the Mozilla site there is also a s...
Create directories using make file
... solution also has the significant drawback that the mkdir process will be called by the make file for every single file that's rebuilt, most of which won't need to make the directory again. When adapted to non-Linux build systems like Windows, it actually causes both an unblockable error output si...
How do pointer to pointers work in C?
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Stephan did a good job reproducing, basically, the diagram in Kernighan & Richie's The C Programming Language. If you're programming C, and don't have this book and are cool with paper documentation, I highly suggest you get it, the (fairly) modest expense wil...
HTML: How to limit file upload to be only images?
...<input type="file" accept="image/*">. Of course, never trust client-side validation: Always check again on the server-side...
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In Objective-C why should I check if self = [super init] is not nil?
...untime such that NSObject's implementation of init is not what is actually called.
– bbum
Jul 9 at 5:04
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