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Would it be beneficial to begin using instancetype instead of id?
...ant to maintain source compatibility with (for instance) assigning a new NSArray to a NSString without a cast.
– Steven Fisher
Mar 6 '13 at 17:19
4
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Image comparison - fast algorithm
...ly 8 bytes.
For example, if you have 1 million images it would require an array of 1 million 64-bit hash values (8 MB). On some CPUs this fits in the L2/L3 cache! In practical usage I have seen a corei7 compare at over 1 Giga-hamm/sec, it is only a question of memory bandwidth to the CPU. A 1 Billi...
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue
...cted void onDraw(Canvas canvas) {
// The matrix is stored in a single array, and its treated as follows: [ a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t ]
// When applied to a color [r, g, b, a], the resulting color is computed as (after clamping) ;
// R' = a*R + b*G + c*...
What's the best way of scraping data from a website? [closed]
...ing a bad choice, but with the right libraries it's not too bad. Regex and array/sting manipulation is clumsy but on the plus side it's fast and everywhere.
– pguardiario
Mar 5 '14 at 1:01
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What are the differences between the threading and multiprocessing modules?
...processes generally requires putting it into low-level formats like Value, Array, and ctypes types.
Processes are not subject to the GIL.
On some platforms (mainly Windows), processes are much more expensive to create and destroy.
There are some extra restrictions on processes, some of which are di...
How well is Unicode supported in C++11?
...., char objects. However, unlike a wide string literal, which is always an array of wchar_t objects, a "wide string" in this context is not necessarily a string of wchar_t objects. In fact, the standard never explicitly defines what a "wide string" means, so we're left to guess the meaning from usag...
What's the difference(s) between .ToList(), .AsEnumerable(), AsQueryable()?
...tual type: EnumerableQuery`1
There it is. AsQueryable() has converted the array into an EnumerableQuery, which "represents an IEnumerable<T> collection as an IQueryable<T> data source." (MSDN).
What's the use?
AsEnumerable is frequently used to switch from any IQueryable implementation ...
How do I create a simple 'Hello World' module in Magento?
...ethods/variables on the fly. For example you'll see it used as a glorified array to pass data from one method to another.
During development make sure you caching is disabled. It'll make magento excruciatingly slow, but it'll save you a lot of head trauma (from banging it on your desk).
You'll se...
Lock-free multi-threading is for real threading experts
...ou do not have dedicated locks - instead you treat e.g. all elements in an array or all nodes in a linked list as a "spin-lock". You read, modify and try to update if there was no update since your last read. If there was, you retry.
This makes your "locking" (oh, sorry, non-locking :) very fine gra...
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
...heck if the configuration is changing and if so stick it in a static SparseArray under the fragment's identifier, and then in your onCreate() or onStart() look to see if you have an AsyncTask in the sparse array available.
s...