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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
Let's say the bottleneck of my Java program really is some tight loops to compute a bunch of vector dot products. Yes I've profiled, yes it's the bottleneck, yes it's significant, yes that's just how the algorithm is, yes I've run Proguard to optimize the byte code, etc.
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Table header to stay fixed at the top when user scrolls it out of view with jQuery
I am trying to design an HTML table where the header will stay at the top of the page when AND ONLY when the user scrolls it out of view. For example, the table may be 500 pixels down from the page, how do I make it so that if the user scrolls the header out of view (browser detects its no longer i...
How do I force Postgres to use a particular index?
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Assuming you're asking about the common "index hinting" feature found in many databases, PostgreSQL doesn't provide such a feature. This was a conscious decision made by the PostgreSQL team. A good overview of why and what you ca...
What is the difference between JOIN and JOIN FETCH when using JPA and Hibernate
Please help me understand where to use a regular JOIN and where a JOIN FETCH.
5 Answers
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Difference between a Structure and a Union
Is there any good example to give the difference between a struct and a union ?
Basically I know that struct uses all the memory of its member and union uses the largest members memory space. Is there any other OS level difference?
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Correct idiom for managing multiple chained resources in try-with-resources block?
The Java 7 try-with-resources syntax (also known as ARM block ( Automatic Resource Management )) is nice, short and straightforward when using only one AutoCloseable resource. However, I am not sure what is the correct idiom when I need to declare multiple resources that are dependent on each ot...
Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Mozilla PDF.js：PDF在线预览前言 英文是github上的原文，找不到中文资料，我根据自己理解翻译的，有些词意思拿不准就直接把单词留在原地了，看这个文档应该可以凑合着 PDF.js官网（含github地址）：http://mozilla.github.io/pdf.js/
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When is std::weak_ptr useful?
I started studying smart pointers of C++11 and I don't see any useful use of std::weak_ptr . Can someone tell me when std::weak_ptr is useful/necessary?
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How do I allow HTTPS for Apache on localhost?
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I've just attempted this - I needed to test some development code on my localhost Apache on Windows. This was WAAAY more difficult than it should be. But here are the steps that managed to work after much hairpulling...
I found that my ...
Java ArrayList - how can I tell if two lists are equal, order not mattering?
I have two ArrayList s of type Answer (self-made class).
18 Answers
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