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What exactly are “spin-locks”?
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When you use regular locks (mutexes, critical sections etc), operating system puts your thread in the WAIT state and preempts it by scheduling other threads on the same core. This has a performance penalty if the wait time is really short, because your thread now ...
Is the != check thread safe?
...LD test/Test1.a : Ljava/lang/Object;
IF_ACMPEQ L1
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as we can see it loads field a to local vars twice, it's a non-atomic operation, if a was changed in between by another thread comparison may produce false.
Also, memory visibility problem is relevant here, there is no guarantee that cha...
module.exports vs exports in Node.js
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var func = require('./module.js');
// the following line will **work** with module.exports
func();
Basically node.js doesn't export the object that exports currently references, but exports the properties of what exports originally references. Although Node.js does export the object module.expo...
Is it possible to make a Tree View with Angular?
...ive you a good idea of how to display a tree like structure using angular. It is kind of using recursion in html!
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What is the default access modifier in Java? [duplicate]
...ult access modifier for a method or an instance variable if I do not state it explicitly?
13 Answers
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What is a None value?
... points. I thought that I would find the answer to my question, if I share it there.
9 Answers
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Hidden features of mod_rewrite
There seem to be a decent number of mod_rewrite threads floating around lately with a bit of confusion over how certain aspects of it work. As a result I've compiled a few notes on common functionality, and perhaps a few annoying nuances.
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Intellij IDEA Java classes not auto compiling on save
Yesterday I switched to IntelliJ IDEA from Eclipse.
18 Answers
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How to find an available port?
I want to start a server which listen to a port. I can specify port explicitly and it works. But I would like to find a port in an automatic way. In this respect I have two questions.
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“Single-page” JS websites and SEO
...e are a lot of cool tools for making powerful "single-page" JavaScript websites nowadays. In my opinion, this is done right by letting the server act as an API (and nothing more) and letting the client handle all of the HTML generation stuff. The problem with this "pattern" is the lack of search eng...