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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...
UIActivityViewController crashing on iOS 8 iPads
...the three following properties:
barButtonItem
sourceView
sourceRect
In order to specify the anchor point you will need to obtain a reference to the UIActivityController's UIPopoverPresentationController and set one of the properties as follows:
if ( [activityViewController respondsToSelector:@s...
Difference between Mock / Stub / Spy in Spock test framework
...her mock frameworks. In most cases when using mocks, they did not do it in order to verify behaviour (i.e. count method calls) but to isolate the subject under test from its environment. Interaction counting IMO is just an add-on goodie and should be used thoughtfully and sparingly because there is ...
Difference between Dictionary and Hashtable [duplicate]
... collection is that it does boxing automatically for your values and
in order to get your original value you need to perform unboxing ,
these to decrease your application performance as penalty.
Dictionary: This is generic type of collection where no implicit
boxing, so no need to unboxi...
Git commits are duplicated in the same branch after doing a rebase
...ev". If this is the case, then why do C5 and C6 show up before C7 in the ordering of commits on origin/dev?
– KJ50
Nov 5 '14 at 5:34
...
Serialize an object to string
... simply tried to keep my code sample as near as possible to the OP one, in order to highlight my point which is all about object types. Anyway its good to remember anyone that the using statement is the best friend both to us and to our dear IDisposable implementing objects ;)
–...
Library? Static? Dynamic? Or Framework? Project inside another project
...A Framework embodies some abstract design, with more behavior built in. In order to use it you need to insert your behavior into various places in the framework either by subclassing or by plugging in your own classes. The framework's code then calls your code at these points. The main control of th...
Quickly find whether a value is present in a C array?
...
Keep the table in sorted order, and use Bentley's unrolled binary search:
i = 0;
if (key >= a[i+512]) i += 512;
if (key >= a[i+256]) i += 256;
if (key >= a[i+128]) i += 128;
if (key >= a[i+ 64]) i += 64;
if (key >= a[i+ 32]) i += 32...
Calculate MD5 checksum for a file
... @Quibblesome, I was just trying to promote the general idea that the order of nesting of using statements matters. Elsewhere, the difference might be significant. Why not practice the habit of detecting failure early? I agree, though, that in this specific snippet, the habit brings almost no b...
Why doesn't Java allow overriding of static methods?
... it is" rather than how it should be or more accurately how it could be in order to meet the expectations of the OP and, hence here, myself and others. There is no concrete reason to disallow the overriding of static methods other than "that's how it is". I think it's a flaw personally.
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