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从Sloodle看三维虚拟学习环境的发展趋势 - 资讯 - 清泛网 - 专注C/C++及内核技术
...A., Thomas, M., Dodge, T., Carteaux, R., & Tuzun, H.(2005).Making learning fun: Quest A tlantis, a game without guns [A].Educational Technology Research and Development, 53(1) : 862107.
[3] Dede, C., Nelson, B., Ketelhut, D.J., & Bowman, C.(2003).Design2based research strategies for studying sit...
What are the real-world strengths and weaknesses of the many frameworks based on backbone.js? [close
...They register themselves with the overall composite application system and then they communicate through various means of decoupled messages and calls.
I've written a little bit about this on my blog, introducing Marionette as a composite application architecture for Backbone:
http://lostechies....
How does PHP 'foreach' actually work?
... can happen:
If you iterate by reference using foreach ($arr as &$v) then $arr is turned into a reference and you can change it during iteration.
In PHP 5 the same applies even if you iterate by value, but the array was a reference beforehand: $ref =& $arr; foreach ($ref as $v)
Objects hav...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...d disk or RAM).
OCB is by far the best mode, as it allows encryption and authentication in a single pass. However there are patents on it in USA.
The only thing you really have to know is that ECB is not to be used unless you are only encrypting 1 block. XTS should be used if you are encrypting ra...
How to run a program without an operating system?
...er turning on, this is when I have to press Enter to enter the boot menu:
Then, here I have to press F12 to select the USB as the boot device:
From there, I can select the USB as the boot device like this:
Alternatively, to change the boot order and choose the USB to have higher precedence so I d...
File I/O in Every Programming Language [closed]
...programmers have from time to time.
How do I read a line from a text file? Then the next question is always how do i write it back.
...
What is your most productive shortcut with Vim?
...."
If you only understand basic up, down, left, and right cursor movements then vi will be no more productive than a copy of "notepad" for you. (Okay, you'll still have syntax highlighting and the ability to handle files larger than a piddling ~45KB or so; but work with me here).
vi has 26 "marks" ...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...#include <vector>
#include "boost/lambda/lambda.hpp"
#include "boost/function.hpp"
Course::Course( unsigned int num, unsigned int hour, std::string name ) :
course_num(num),
course_hour(hour),
course_name(name)
{
}
Student::Student( unsigned int num, const std:...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...em it was being compiled for. There was no official language standard back then (beyond the reference material at the back of the first edition of K&R), and C code of any complexity was typically a complex maze of #ifdefs to allow for differences between systems. These macro definitions were gen...
Call a Server-side Method on a Resource in a RESTful Way
...his case, the client must have a way to track the bark task. The bark task then should be a resource with it's own URI.:
POST /v1/dogs/1/barks HTTP/1.1
Host: api.animals.com
Authorization: Basic mAUhhuE08u724bh249a2xaP=
{document body, if needed;
NOTE: when possible, the response SHOULD contain a ...