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How is this fibonacci-function memoized?
...nacci definition, fib n = fib (n-1) + fib (n-2), the function itself gets called, twice from the top, causing the exponential explosion. But with that trick, we set out a list for the interim results, and go "through the list":
fib n = (xs!!(n-1)) + (xs!!(n-2)) where xs = 0:1:map fib [2..]
The tr...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
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So why isn't that called "using the stack to trigger cleanup" (UTSTTC:)?
RAII is telling you what to do: Acquire your resource in a constructor! I would add: one resource, one constructor. UTSTTC is just one application of that, RAII is much ...
iphone Core Data Unresolved error while saving
...conflict with the old model implementation.
Edit:
I almost forgot here's all the error codes that Core Data spits out:
Core Data Constants Reference
I had trouble with this before and I realised I unchecked the correct optional box. Such trouble finding out the problem. Good luck.
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AngularJS performs an OPTIONS HTTP request for a cross-origin resource
...s-Origin Resource Sharing standard works by adding new HTTP
headers that allow servers to describe the set of origins that are
permitted to read that information using a web browser. Additionally,
for HTTP request methods that can cause side-effects on user data (in
particular; for HTTP meth...
What is the best way to find the users home directory in Java?
... variants. I am looking for a snippet of code that can accomplish this for all platforms, and a way to detect the platform.
...
Ajax, back button and DOM updates
...r navigates to page B and then hits back button to get back to the page A. All modifications to DOM of page A are lost and user is presented with version that was originally retrieved from the server.
...
How do I detect IE 8 with jQuery?
...owser.version.substring(0, 2) == "8.") { ... }. That way it will work with all versions of IE8.
– AndiDog
Feb 4 '10 at 19:10
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Checkout old commit and make it a new commit [duplicate]
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with a large repo it takes awhile to delete all of the files and then check them all back out. I feel like git should have a way to revert to an old revision without having to delete everything. But that's just my opinion, this worked well for me and I didn't see a be...
Passing arguments to “make run”
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What's a macro? Isn't that what people call environment variables? What's the difference between a macro and an environment variable?
– KcFnMi
Aug 12 at 23:05
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Five equal columns in twitter bootstrap
...t;
<div class="span2"></div>
</div>
Voila!
Five equally spaced and centered columns.
In bootstrap 3.0, this code would look like
<div class="row">
<div class="col-md-2 col-md-offset-1"></div>
<div class="col-md-2"></div>
<div c...