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#pragma once vs include guards? [duplicate]
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I just wanted to add to this discussion that I am just compiling on VS and GCC, and used to use include guards. I have now switched to #pragma once, and the only reason for me is not performance or portability or standard as I don't really care what is standard as long as VS and GCC support i...
MySQL - length() vs char_length()
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When is it practical to use Depth-First Search (DFS) vs Breadth-First Search (BFS)? [closed]
... @MarekMarczak The iterative version of DFS uses a stack. Recursion vs. Iteration is a whole separate topic.
– Clint Deygoo
Jul 29 '18 at 3:01
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querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
... And about class selection see also jsperf.com/getelementsbyclassname-vs-queryselectorall/25. Conclusion : one should far more prefer pure javascript than jquery, and the specific functions getElementById and getElementsByClassName. The className selection can be few hundreds times slower witho...
How to add Web API to an existing ASP.NET MVC 4 Web Application project?
...web > Add Web API controller
Web.config will be modified accordingly by VS
Add Application_Start method if not there already
protected void Application_Start()
{
//this should be line #1 in this method
GlobalConfiguration.Configure(WebApiConfig.Register);
}
Add the following class (I ad...
$apply vs $digest in directive testing
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一个自媒体的运营手记：我做公众号已经两年多了 - 资讯 - 清泛网 - 专注C/C...
...要推广出一个东西很艰难，很多公司喜欢花高价招聘一个开发高手，都不舍得花高价招聘一个推广人员，这就是区别，所以很多产品都死在了推广上。这里说的意思不是技术不重要，只是说明技术是实现产品的前提，他们就是做...
JPG vs. JPEG image formats
I often use JPEG images, and I have noticed that there are two very similar file extensions: .jpg , which my mobile's camera and the Preview application use, and .jpeg , with which Image Capture saves the images from scanning with my Canon MX455 printer. LaTeX doesn't seem to distinguish...
Rails: update_attribute vs update_attributes
Both of these will update an object without having to explicitly tell AR to update.
11 Answers
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Determining 32 vs 64 bit in C++
...g for a way to reliably determine whether C++ code is being compiled in 32 vs 64 bit. We've come up with what we think is a reasonable solution using macros, but was curious to know if people could think of cases where this might fail or if there is a better way to do this. Please note we are trying...