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What is the difference between mutex and critical section?
...ronization primitive (like an event or semaphore).
I wrote a quick sample app that compares the time between the two of them. On my system for 1,000,000 uncontended acquires and releases, a mutex takes over one second. A critical section takes ~50 ms for 1,000,000 acquires.
Here's the test code,...
How to use SCNetworkReachability in Swift
...onal.
The guard let statement (a new feature in Swift 2.0) assigns the unwrapped value to the defaultRouteReachability variable if it is
not nil. Otherwise the else block is executed and the function
returns.
As of Swift 2, SCNetworkReachabilityCreateWithAddress() returns
a managed object. You don't...
Using NSPredicate to filter an NSArray based on NSDictionary keys
...res letters with accent symbols. This works especially well in my Warcraft App where people spell their name "Vòódòó" making it nearly impossible to search for their name in a tableview. The [d] strips their accent symbols during the predicate. So a predicate of @"name LIKE[CD] %@", object.name ...
Cross-platform way of getting temp directory in Python
...ython 3.6.5 on Windows 10, tempfile.gettempdir() resolves to C:\users\user\AppData\Local\Temp. An unfortunately long path.
– solvingJ
Apr 25 '18 at 20:17
add a comment
...
How do you enable the escape key close functionality in a Twitter Bootstrap modal?
...
You can also append data-keyboard attribute to your div.modal (and omit it in callers) if you invoke the dialog from multiple places.
– Vitalik Verhovodov
Sep 26 '15 at 13:17
...
How do I send a POST request with PHP?
...ns = array(
'http' => array(
'header' => "Content-type: application/x-www-form-urlencoded\r\n",
'method' => 'POST',
'content' => http_build_query($data)
)
);
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);...
What happens to an open file handle on Linux if the pointed file gets moved or deleted
What happens to an open file handle on Linux if the pointed file meanwhile gets:
7 Answers
...
ASP.NET Web API - PUT & DELETE Verbs Not Allowed - IIS 8
...ith the Web API you need to edit %userprofile%\documents\iisexpress\config\applicationhost.config and add the verbs to the ExtensionlessUrl handler as follows:
Change this line:
<add name="ExtensionlessUrl-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG" type="System.Web.Handlers.TransferRe...
Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
...ntended) since it converts a point from a view to itself, so nothing will happen. You would more commonly find out where some point of a view was in relation to its superview - to test if a view was moving off the screen, for example:
CGPoint originInSuperview = [superview convertPoint:CGPointZero ...
Inversion of Control vs Dependency Injection
...
IoC is a generic term meaning rather than having the application call the methods in a framework, the framework calls implementations provided by the application.
DI is a form of IoC, where implementations are passed into an object through constructors/setters/service lookups,...