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How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
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Where are my postgres *.conf files?
I have recently reinstalled postgresql 8.3 on my Ubuntu 8.04 after update. Used EnterpriseDB package. I can connect to the database locally, I see system DB postgres but I can't configure it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.con...
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
...拟学习环境 ———Sloodle。通过介绍 Sloodle中的 Web-Intercom、MetaGloss、Choicer、Translator等工具 ,讨论了使用这种三维虚拟环境与 Web技术整合给学习系统带来的挑战和潜力。最后 ,总结并探讨了三维虚拟学习环境的发展趋势。
Slood...
PHP mail function doesn't complete sending of e-mail
I've tried creating a simple mail form. The form itself is on my index.html page, but it submits to a separate "thank you for your submission" page, thankyou.php , where the above PHP code is embedded.
The code submits perfectly, but never sends an email. How can I fix this?
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Understanding recursion [closed]
I'm having major trouble understanding recursion at school. Whenever the professor is talking about it, I seem to get it but as soon as I try it on my own it completely blows my brains.
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How do I export UIImage array as a movie?
I have a serious problem: I have an NSArray with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
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How to draw a path on a map using kml file?
Can I parse kml file in order to display paths or points in Android? Please could you help me with that?
4 Answers
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Hash collision in git
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Picking atoms on 10 Moons
An SHA-1 hash is a 40 hex character string... that's 4 bits per character times 40... 160 bits. Now we know 10 bits is approximately 1000 (1024 to be exact) meaning that there are 1 000 000 000 000 000 000 000 ...
Best way to test for a variable's existence in PHP; isset() is clearly broken
From the isset() docs :
17 Answers
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What is the difference between a 'closure' and a 'lambda'?
Could someone explain? I understand the basic concepts behind them but I often see them used interchangeably and I get confused.
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