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Why doesn't Dijkstra's algorithm work for negative weight edges?
...
Recall that in Dijkstra's algorithm, once a vertex is marked as "closed" (and out of the open set) - the algorithm found the shortest path to it, and will never have to develop this node again - it assumes the path developed to this path is the shortest.
But with negative weights - it might not be...
:not(:empty) CSS selector is not working?
...ed by an attribute in the start tag, rather than text content within start and end tags.
Also, from the Selectors spec:
The :empty pseudo-class represents an element that has no children at all. In terms of the document tree, only element nodes and content nodes (such as DOM text nodes, CDATA n...
How do you convert a time.struct_time object into a datetime object?
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@richvdh: C standard specifies that mktime() should take tm_isdst into account and Python time.mktime() calls C mktime() function on CPython. mktime() may choose the wrong local time when it is ambiguous (e.g., during end-of-DST ("fall ba...
Position Absolute + Scrolling
With the following HTML and CSS
4 Answers
4
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What is the (function() { } )() construct in JavaScript?
...es immediately after it’s created.
It has nothing to do with any event-handler for any events (such as document.onload).
Consider the part within the first pair of parentheses: (function(){})();....it is a regular function expression. Then look at the last pair (function(){})();, this is normally...
How do you do a ‘Pause’ with PowerShell 2.0?
...m losing it. PowerShell is annoying me. I'd like a pause dialog to appear, and it won't.
5 Answers
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Elegant solution to duplicate, const and non-const, getters? [duplicate]
...e member function calling it is non-const, the object itself is non-const, and casting away the const is allowed.
class Foo
{
public:
const int& get() const
{
//non-trivial work
return foo;
}
int& get()
{
return const_cast<int&>(const_c...
How do you use window.postMessage across domains?
... },
false);
</script>
</body>
</html>
A and B must be something like http://domain.com
EDIT:
From another question, it looks the domains(A and B here) must have a / for the postMessage to work properly.
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Is there a way to detach matplotlib plots so that the computation can continue?
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@noskolo what if I have several figures, how to plot and show Fig1 while continue the background to go on? I'd like this figure being open till the next fig being generated, so at the end I have all figs open and the code is finished. With your current solution, it keeps me wai...
Installing Java 7 on Ubuntu
... like to install java manually.
I placed the folder of the JDK on the desk and I set environment variables (PATH, CLASSPATH and JAVA_HOME).
From the terminal, if I type java -version I get printed
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