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Get operating system info
I recently started wondering about sites like http://thismachine.info/ that get the user's operating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out.
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Django template how to look up a dictionary value with a variable
The regular way to lookup a dictionary value in a Django template is {{ mydict.key1 }} , {{ mydict.key2 }} . What if the key is a loop variable? ie:
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Why can't decimal numbers be represented exactly in binary?
There have been several questions posted to SO about floating-point representation. For example, the decimal number 0.1 doesn't have an exact binary representation, so it's dangerous to use the == operator to compare it to another floating-point number. I understand the principles behind floating-po...
Using node.js as a simple web server
I want to run a very simple HTTP server. Every GET request to example.com should get index.html served to it but as a regular HTML page (i.e., same experience as when you read normal web pages).
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Print text instead of value from C enum
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C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
C/C++中的段错误（Segmentation fault）Segment fault 之所以能够流行于世，是与Glibc库中基本上所有的函数都默认形参指针为非空有着密切关系的。目录1。什么是段错误？2。为什 Segment fault 之所以能够流行于世，与Glibc库中基本上所有...
Change from SQLite to PostgreSQL in a fresh Rails project
I have a rails app that's databases are in SQLite (The dev and production). Since I am moving to heroku, I want to convert my database to PostgreSQL.
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JavaScript: replace last occurrence of text in a string
See my code snippet below:
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How do you round to 1 decimal place in Javascript?
Can you round a number in javascript to 1 character after the decimal point (properly rounded)?
21 Answers
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What is %2C in a URL?
I'm trying to understand the structure of a URL, and I'm seeing a lot of %2C . I'm guessing this is a result of some encoding. What does that stand for?
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