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C++ performance challenge: integer to std::string conversion
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MB/s is a strange metric, especially seeing how you don't remove trailing whitespaces from the string in your implementations. My updated code runs faster than your implementation with x64 VC++ 2005 on Core i7 920 (16.2M ops/s vs. 14.8M ops/s), _ltoa ...
Sort points in clockwise order?
... lea eax, DWORD PTR [ebx+ebx]
and edi, eax
mov eax, DWORD PTR _b$[esp+8]
sub edi, ecx
sub edi, ebx
add edi, esi
vmovss xmm0, DWORD PTR [eax]
vsubss xmm2, xmm0, xmm2
; 41 : const int dby = ((b.y() - center.y()) > 0) ? 1 : 0;
vmovss xmm0, DWORD PTR [eax+4]...
C# vs Java Enum (for those new to C#)
...tances of that class:
using System;
using System.Collections.Generic;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Planet planetEarth = Planet.MERCURY;
double earthRadius = pEarth.Radius; // Just threw it in to s...
How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...wer and oba's answer if they're seeing the same symptoms (Samsung devices (esp. Galaxy S 4), etc.)
– parkerfath
Mar 12 '15 at 23:38
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Difference between Bridge pattern and Adapter pattern
...called it "pseudo-remotely". This often times caused performance problems (esp. when really called over the wire). Experienced developers would use the facade pattern to provide a very coarse-grained interface to the client. This facade would then in turn do multiple calls to different more fine-gra...
What is the instanceof operator in JavaScript?
... was tricky / new to understand (not do) that "flexibility" in JavaScript, esp. for some who are used to a language that requires e.g. explicit casting to alter a variable type. As you pointed out, it's very easy to change the type from e.g. primitive int to primitive string.
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Join vs. sub-query
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@user1735921 sure, especially when the query gets so complicated that it does the wrong thing and you spend a day fixing it... there's a balance in between, as usual.
– fabio.sussetto
Nov 30 '17 at 14:29
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
... matrix (64-bit int).
The critical stride would be 2048 bytes, which correspond to 4 rows of the matrix (which is continuous in memory).
Assume we're processing row 28. We're attempting to take the elements of this row and swap them with the elements from column 28. The first 8 elements of the r...
Python assigning multiple variables to same value? list behavior
...ual sense is ok (perhaps with a disclaimer that implementations may vary), esp if the goal is to convey behavior.
– Levon
Aug 5 '15 at 14:47
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Declaration/definition of variables locations in ObjectiveC?
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I can understand your confusion. Especially since recent updates to Xcode and the new LLVM compiler changed the way ivars and properties can be declared.
Before "modern" Objective-C (in "old" Obj-C 2.0) you didn't have a lot of choices. Instance variables u...