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O(nlogn) Algorithm - Find three evenly spaced ones within binary string
... ones in it and no evenly spaced 1s, so checking all pairs would be of the order of the square of the number of 1s in it: that's 4k ≈ n1.26 which unfortunately is asymptotically much larger than (n log n). In fact, the worst case is even worse: Leo Moser in 1953 constructed (effectively) such stri...
NumPy array initialization (fill with identical values)
...Rolf Bartstra.)
a=np.empty(n); a.fill(5) is fastest.
In descending speed order:
%timeit a=np.empty(1e4); a.fill(5)
100000 loops, best of 3: 5.85 us per loop
%timeit a=np.empty(1e4); a[:]=5
100000 loops, best of 3: 7.15 us per loop
%timeit a=np.ones(1e4)*5
10000 loops, best of 3: 22.9 us per lo...
Add a “hook” to all AJAX requests on a page
...ill generically intercept any AJAX globally and not screw up any callbacks etc. that maybe have been assigned by any third party AJAX libraries.
(function() {
var origOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function() {
console.log('request started!');
...
Unique Key constraints for multiple columns in Entity Framework
...et; }
The second parameter in the attribute is where you can specify the order of the columns in the index.
More information: MSDN
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Does bit-shift depend on endianness?
... new value is stored back in memory, which is where the little endian byte order comes into effect again.
Update, thanks to @jww: On PowerPC the vector shifts and rotates are endian sensitive. You can have a value in a vector register and a shift will produce different results on little-endian and...
How does Windows 8 Runtime (WinRT / Windows Store apps / Windows 10 Universal App) compare to Silver
...sely matching System.Windows.Controls; ditto for Windows.UI.Xaml.Documents etc.
Now, .NET has the ability to directly reference WinRT components as if they were .NET assemblies. This works differently from COM Interop - you don't need any intermediate artifacts such as interop assemblies, you just...
Difference between a user and a schema in Oracle?
...other stuff.
SYS is a schema that includes tons of tables, views, grants, etc etc etc.
SYSTEM is a schema.....
Technically -- A schema is the set of metadata (data dictionary) used by the database,
typically generated using DDL. A schema defines attributes of the database, such as
tables, colum...
Tools to make CSS sprites? [closed]
... It's a nice tool, but, it requires a ZIP file of your images and the order it puts your sprites in is the ZIP order. Brian's tool below allows you to upload files and drag&drop to change order.
– Ed Bayiates
Aug 8 '12 at 22:11
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Natural Sort Order in C#
Anyone have a good resource or provide a sample of a natural order sort in C# for an FileInfo array? I am implementing the IComparer interface in my sorts.
...
Passing Data between View Controllers
...controller creates a new (mutable) dictionary and adds it to the array. In order to fill in the row, the controller creates a detail view controller and gives it the new dictionary. The detail view controller fills in the dictionary and returns. The dictionary is already part of the model, so nothin...