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How do I install a plugin for vim?
... that it's completely safe (symlinks don't overwrite existing files, uninstall only deletes symlinks) and easy to keep things updated.
# Easily install vim plugins from a source control checkout (e.g. Github)
#
# alias vim-install=rake -f ~/.vim/rakefile-vim-install
# vim-install
# vim-install unin...
How do I call ::std::make_shared on a class with only protected or private constructors?
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Actually, I am a huge fan of those meaningless structures used only as keys. I prefer this to Luc's solution, but that might be my biais against inheritance.
– Matthieu M.
Nov 16 '11 at 7:43...
Instantiating a generic class in Java [duplicate]
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This is all great and all ... it certainly works. But ... if all we need is a new Bar instance (since <T> is <Bar>) then reflectively making a Bar instance with Class<Bar> token = Bar.class; and Bar newBar = token....
How do I fix "The expression of type List needs unchecked conversion…'?
...);
for(Object o: c)
r.add(clazz.cast(o));
return r;
}
This allows you to do:
List<SyndEntry> entries = castList(SyndEntry.class, sf.getEntries());
Because this solution checks that the elements indeed have the correct element type by means of a cast, it is safe, and does not...
fastest MD5 Implementation in JavaScript
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I've heard Joseph's Myers implementation is quite fast. Additionally, he has a lengthy article on Javascript optimization describing what he learned while writing his implementation. It's a good read for anyone interested in performant javascript.
http://www.webreference.com/programming/...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
The "N+1 selects problem" is generally stated as a problem in Object-Relational mapping (ORM) discussions, and I understand that it has something to do with having to make a lot of database queries for something that seems simple in the object world.
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What is the concept of erasure in generics in Java?
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It's basically the way that generics are implemented in Java via compiler trickery. The compiled generic code actually just uses java.lang.Object wherever you talk about T (or some other type parameter) - and there's some metadata to t...
Convert array of integers to comma-separated string
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132
.NET 4
string.Join(",", arr)
.NET earlier
string.Join(",", Array.ConvertAll(arr, x => x....
Chaining multiple filter() in Django, is this a bug?
I always assumed that chaining multiple filter() calls in Django was always the same as collecting them in a single call.
4...
Breadth First Vs Depth First
...would visit the nodes in this order
A, B, D, C, E, F
Notice that you go all the way down one leg before moving on.
A breadth first traversal would visit the node in this order
A, B, C, D, E, F
Here we work all the way across each level before going down.
(Note that there is some ambiguity in...