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Python's many ways of string formatting — are the older ones (going to be) deprecated?
... the classic way - it will stay. Despite being denoted on PEP 3101, Python 3.1 had come and gone, and % formatting is still around.
The statements for the keeping classic style are clear: it is simple, it is fast, it is quick to do for short things. Using the .format method is not always more reada...
Rails - Could not find a JavaScript runtime?
I created a new Rails project using rails 3.1.0.rc4 on my local machine but when I try to start the server I get:
Could not find a JavaScript runtime. See here for a list of available runtimes. ( ExecJS::RuntimeUnavailable )
...
How to pip or easy_install tkinter on Windows
...ocs-Tkinter install for Python (for Windows):
Tkinter (and, since Python 3.1, ttk) are included with all standard Python distributions. It is important that you use a version of Python supporting Tk 8.5 or greater, and ttk. We recommend installing the "ActivePython" distribution from ActiveState, ...
Returning the product of a list
..."long" from the start. (2) Python 3.0 was a "proof of concept". Upgrade to 3.1 ASAP!
– John Machin
Jan 20 '10 at 22:30
...
Difference between toFixed() and toPrecision()?
...r gives you a fixed number of significant digits.
Math.PI.toFixed(2); // "3.14"
Math.PI.toPrecision(2); // "3.1"
Furthermore, toPrecision will yield scientific notation if there are more integer digits in the number than the specified precision.
(Math.PI * 10).toPrecision(2); // "31"
(Math.PI * ...
Visual Studio 2013 Update 4【VS2013 SP4 旗舰版下载地址】 - 更多技术 - ...
Visual Studio 2013 Update 4【VS2013 SP4 旗舰版下载地址】vs2013没有64位版本，但是提供64位编译器，可以编译64位程序。Visual Studio Ultimate 2013 with Update 4 (x86) - DVD (Chinese...vs2013没有64位版本，但是提供64位编译器，可以编译64位程序。
Visu...
PHP学习必看的一些书 - IT书籍推荐 - 清泛网 - 专注C/C++及内核技术
...
该书单我经过一些调整。
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《PHP程序设计》(第2版) –PHP语法和入门最好的书
《PHP5权威编程》 –PHP入门后升级书
《深入PHP：面向对象、模式与实践》(第3版) –理解PHP中的面向对象和设计模式
《高性能PHP应...
PHP学习必看的一些书 - PHP - 清泛IT论坛，有思想、有深度
...。
该书单我经过一些调整。PHP相关《PHP程序设计》(第2版) –PHP语法和入门最好的书《PHP5权威编程》 –PHP入门后升级书《深入PHP：面向对象、模式与实践》(第3版) –理解PHP中的面向对象和设计模式《高性能PHP应用开发》 –了...
App Inventor 2能编译出苹果iOS版App吗？ - App Inventor 2 中文网 - 清泛I...
如题，首先可以明确地说目前并不支持，只支持iOS版AI伴侣进行测试，但是AI伴侣的版本更新一直都是落后于安卓版的，导致测试时会有一些不兼容或一些奇怪的问题，体验不是很好，因此还是建议有条件的话还是使用安卓手机...
基于PECL OAuth打造微博应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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如果使用PHP Streams方式发送请求的话，缺省使用的是HTTP1.0版本，可以通过tcpdump命令来检测这种现象，大致方法如下：
shell> tcpdump -A host foo.com
此时，某些防火墙会过滤掉非标准HTTP1.0的请求头，如Host请求头，从而造成错误。...