Warning: The question you’ve asked is really pretty complex — probably much more so than you realize. As a result, this is a really long answer. From a purely theoretical viewpoint, there’s probably a simple answer to this: there’s (probably) nothing about C# that truly prevents it from being as fast as C++. Despite the … Read more
I always add : -webkit-backface-visibility: hidden; -webkit-perspective: 1000; When working with 3d transform. Even “fake” 3D transforms. Experience tells me that these two lines always improve performances, especially on iPad but also on Chrome. I did test on your exemple and, as far as I can tell, it works. As for the “why” part of … Read more
I don’t really have experience with TVP yet, however there is an nice performance comparison chart vs. BULK INSERT in MSDN here. They say that BULK INSERT has higher startup cost, but is faster thereafter. In a remote client scenario they draw the line at around 1000 rows (for “simple” server logic). Judging from their … Read more
The heap profile shows active memory, memory the runtime believes is in use by the go program (ie: hasn’t been collected by the garbage collector). When the GC does collect memory the profile shrinks, but no memory is returned to the system. Your future allocations will try to use memory from the pool of previously … Read more
Even React docs mention the custom ref prop as a more flexible approach to forwardRef: If you use React 16.2 or lower, or if you need more flexibility than provided by ref forwarding, you can use this alternative approach and explicitly pass a ref as a differently named prop. There is also a gist, in … Read more
The second option really isn’t the same as the others – if the string is “///foo” it will become “foo” instead of “//foo”. The first option needs a bit more work to understand than the third – I would view the Substring option as the most common and readable. (Obviously each of them as an … Read more
It is inlined, but not optimized away because you compiled with -O0 (the default). That generates asm for consistent debugging, allowing you to modify any C++ variable while stopped at a breakpoint on any line. This means the compiler spills everything from registers after every statement, and reloads what it needs for the next. So … Read more
Because you use .aspx page (and not handler), and because the images loaded by browser not one by one, but many together, I suspect that you felt on the session lock of the page and that’s why this delay. Try to set EnableSessionState=”false” on the page. eg: <%@ Page language=”c#” Codebehind=”WebForm1.aspx.cs” AutoEventWireup=”false” Inherits=”WebApplication1.WebForm1″ EnableSessionState=”false” %> … Read more
Although: max(len(w) for w in words) does kind of “read” easier – you’ve got the overhead of a generator. While: len(max(words, key=len)) can optimise away with the key using builtins and since len is normally a very efficient op for strings, is going to be faster…
UPDATE: this post answered is now superseded by this new one (which take into account the updates of the question) providing an even faster code based on a different approach. Step 1: better algorithm First of all, building a k-d tree runs in O(n log n) time and doing a query runs in O(log n) … Read more