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How to find the lowest common ancestor of two nodes in any binary tree?
... possible. For both nodes in question construct a list containing the path from root to the node by starting at the node, and front inserting the parent.
So for 8 in your example, you get (showing steps): {4}, {2, 4}, {1, 2, 4}
Do the same for your other node in question, resulting in (steps not ...
Common use-cases for pickle in Python
...n.
To emphasise @lunaryorn's comment - you should never unpickle a string from an untrusted source, since a carefully crafted pickle could execute arbitrary code on your system. For example see https://blog.nelhage.com/2011/03/exploiting-pickle/
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Overcoming “Display forbidden by X-Frame-Options”
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I had a similar issue, where I was trying to display content from our own site in an iframe (as a lightbox-style dialog with Colorbox), and where we had an server-wide "X-Frame-Options SAMEORIGIN" header on the source server preventing it from loading on our test server.
This doesn'...
jQuery UI Sortable, then write order into a database
...out compromising the id / name of the element. This code will get the list from asp.net server and then upon sorting only 2 values will be sent back: The db id of sorted element and db id of the element next to which it was dropped. Based on those 2 values, server can easily identify the new postion...
How to check whether a file is empty or not?
...method, which has the attribute st_size(file size in bytes):
>>> from pathlib import Path
>>> mypath = Path("path/to/my/file")
>>> mypath.stat().st_size == 0 # True if empty
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How does std::forward work? [duplicate]
... reference to cv TR -> TR (rvalue reference to T)
(Shamelessly stolen from this answer.)
And then let's take a look at a class that wants to employ perfect forwarding:
template<class T>
struct some_struct{
T _v;
template<class U>
some_struct(U&& v)
: _v(static_ca...
What does the question mark and the colon (?: ternary operator) mean in objective-c?
... [NSString stringWithFormat: @"Status: %@", statusString] This saves you from having to use and release local variables in if-else patterns. FTW!
– Bruno Bronosky
May 6 '10 at 15:52
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How do I convert a Django QuerySet into list of dicts?
... should look like, but most likely you are referring to QuerySet.values(). From the official django documentation:
Returns a ValuesQuerySet — a QuerySet subclass that returns
dictionaries when used as an iterable, rather than model-instance
objects.
Each of those dictionaries represen...
Understanding typedefs for function pointers in C
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Consider the signal() function from the C standard:
extern void (*signal(int, void(*)(int)))(int);
Perfectly obscurely obvious - it's a function that takes two arguments, an integer and a pointer to a function that takes an integer as an argument and retu...
download and install visual studio 2008 [closed]
...259-7ff2-4902-9205-ad1dfb87ccab%2fVS2008SP1MSDNENUX1506188.iso
To upgrade from trial version to Pro version, check:
http://msdn.microsoft.com/en-us/library/ms246600%28VS.80%29.aspx
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