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When and why are database joins expensive?
I'm doing some research into databases and I'm looking at some limitations of relational DBs.
7 Answers
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Do I set properties to nil in dealloc when using ARC?
I am trying to learn Automatic Reference Counting in iOS 5. Now the first part of this question should be easy:
2 Answers
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Can I arrange repositories into folders on Github?
...t projects like webdesign, wordpress themes and different types of applications. And some of these also belong to bigger projects because they were about testing some stuff as a different application.
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How to use SCNetworkReachability in Swift
...his is how you would do it in Swift 2.0 (Xcode 7):
import SystemConfiguration
func connectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
guard let defaultRouteReachabil...
Grasping the Node JS alternative to multithreading
...ode.js server has an internal thread pool so it can perform blocking operations and notify the main thread with a callback or event when things complete.
So I imagine that it will make limited use of another core for the thread pool, for example if you do a non-blocking file system read this is li...
What's the fuss about Haskell? [closed]
...aving worked on learning on Haskell for a month now, is the fact that functional programming twists your brain in interesting ways: it forces you to think about familiar problems in different ways: instead of loops, think in maps and folds and filters, etc. In general, if you have more than one pers...
Android studio, gradle and NDK
I am very new to this whole gradle and Android Studio support. I have managed to convert my android project to gradle using the export option.
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Clear icon inside input text
...ements:
/**
* Clearable text inputs
*/
$(".clearable").each(function() {
var $inp = $(this).find("input:text"),
$cle = $(this).find(".clearable__clear");
$inp.on("input", function(){
$cle.toggle(!!this.value);
});
$cle.on("touchstart click", function(e) {
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How to force GitHub Pages build?
...w-empty
git push origin <branch-name>
Edit 2:
Thanks to GitHub Actions, it's fairly easy to trigger a daily publish: https://stackoverflow.com/a/61706020/4548500.
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Is it expensive to use try-catch blocks even if an exception is never thrown?
We know that it is expensive to catch exceptions. But, is it also expensive to use a try-catch block in Java even if an exception is never thrown?
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