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What is in your Mathematica tool bag? [closed]

We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica? ...
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How to convert a Drawable to a Bitmap?

I would like to set a certain Drawable as the device's wallpaper, but all wallpaper functions accept Bitmap s only. I cannot use WallpaperManager because I'm pre 2.1. ...
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Why was the switch statement designed to need a break?

... Many answers seem to focus on the ability to fall through as the reason for requiring the break statement. I believe it was simply a mistake, due largely because when C was designed there was not nearly as much experience with how these constructs would be used. Peter ...
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How to write a Python module/package?

I've been making Python scripts for simple tasks at work and never really bothered packaging them for others to use. Now I have been assigned to make a Python wrapper for a REST API. I have absolutely no idea on how to start and I need help. ...
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Why is using 'eval' a bad practice?

...d eval have nothing to do with each other. An application that's fundamentally mis-designed is fundamentally mis-designed. eval is no more the root cause of bad design than division by zero or attempting to import a module which is known not to exist. eval isn't insecure. Applications are insecu...
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Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...

...环境配置 1、安装一下过程中所依赖的一些rpm包 yum install -y tcl-devel libart_lgpl-devel libtool-ltdl-devel 2、关闭sendmail,并取消其开机启动 service sendmail stop chkconfig sendmail off 3、配置编译环境,安装开发包组 yum groupinstall -y "Develop...
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How to correctly implement custom iterators and const_iterators?

...e, std::iterator with random_access_iterator_tag.These base classes define all type definitions required by STL and do other work. To avoid code duplication iterator class should be a template class and be parametrized by "value type", "pointer type", "reference type" or all of them (depends on impl...
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javascript scroll event for iPhone/iPad?

... onscroll only after you've stopped scrolling. The usual way of installing the handler works e.g. window.addEventListener('scroll', function() { alert("Scrolled"); }); // or $(window).scroll(function() { alert("Scrolled"); }); // or window.onscroll = function() { alert("Scrolled"); }; // etc...
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Short description of the scoping rules?

... Actually, a concise rule for Python Scope resolution, from Learning Python, 3rd. Ed.. (These rules are specific to variable names, not attributes. If you reference it without a period, these rules apply.) LEGB Rule Local — N...
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How do I remove all .pyc files from a project?

... You are not quoting {}. What would happen if accidentally word-split and deleted an intermediate path which happens to be called like a fragment of the path you found? – Robottinosino Apr 3 '13 at 2:58 ...