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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...ens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking.
How efficient is it to lock a mutex? I.e. how much assembler instructions are there likely and how much time do they take (in the case that the mutex...
How do I initialize an empty array in C#?
...ith var, although only for local variables (not for fields). However in C# 2.0 (Visual Studio 2005) and earlier, you had to use the syntax of this answer (or string[] a = new string[0];).
– Jeppe Stig Nielsen
Apr 18 '16 at 9:24
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Proper way to exit iPhone application?
...conds while app is going background
[NSThread sleepForTimeInterval:2.0];
//exit app when app is in background
exit(0);
}
}
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HTTP 404 Page Not Found in Web Api hosted in IIS 7.5
....NET 4.5 (or ASP.NET 3.5 if you need to support projects on .NET Framework 2.0-3.5).
Click OK.
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in a “using” block is a SqlConnection closed on return or exception?
...ieve it does now (since .net 3.5). It was unclear to me early on with .net 2.0 so I just made it a habit to check and close.
– ShaneLS
Apr 6 '16 at 14:14
1
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Get User's Current Location / Coordinates
...Here is how I am
getting current location and showing on Map in Swift 2.0
Make sure you have added CoreLocation and MapKit framework to your project (This doesn't required with XCode 7.2.1)
import Foundation
import CoreLocation
import MapKit
class DiscoverViewController : UIViewController, ...
GMSGroundOverlay animating - should I be using a CATiledLayer?
... for (int i = 0; i <= 20; i++) {
CGFloat radians = (float)i * ((2.0f * M_PI) / 20.0f);
// Calculate the x,y coordinate using the angle
CGFloat x = hDist * cosf(radians);
CGFloat y = vDist * sinf(radians);
// Calculate the real lat and lon using the
...
How do I parse XML in Python?
...dom.minidom (Python 2.1) 6.3 s 80000K
gnosis.objectify 2.0 s 22000k
xml.dom.minidom (Python 2.4) 1.4 s 53000k
ElementTree 1.2 1.6 s 14500k
ElementTree 1.2.4/1.3 1.1 s 14500k
cDomlette (C extension) 0.540 s 20500k
PyRXPU (C extensio...
Determine if code is running as part of a unit test
... The particular project that I wrote this for was (and still is!) .NET 2.0 so no linq.
– Ryan
May 21 '15 at 10:23
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Easy way to dismiss keyboard?
... of the other answers to this question. The docs say it's available in iOS 2.0 and later.
– antsyawn
Dec 31 '10 at 1:18
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