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String concatenation vs. string substitution in Python
...my scripts, and I was wondering what the cost was. I ran them in different orders to make sure nothing was interfering, or getting better performance being first or last. On a side note, I threw in some longer string generators into those functions like "%s" + ("a" * 1024) and regular concat was alm...
What is the _snowman param in Ruby on Rails 3 forms for?
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This parameter was added to forms in order to force Internet Explorer (5, 6, 7 and 8) to encode its parameters as unicode.
Specifically, this bug can be triggered if the user switches the browser's encoding to Latin-1. To understand why a user would decide to d...
How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
... No, the limits are imposed on the domain. So you could technically get FF up to 12 connections if you had a subdomain in addition to your site.
– Bob
Feb 18 '09 at 13:39
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Tools for JPEG optimization? [closed]
...ic (5-15% with no loss in quality), which is amazing, because it's just re-ordering the progressive scan ordering AFAIK (you might notice the same in other programs, files sometimes get marginally smaller in Photoshop if you choose different number of scans, for no apparent reason). Also, it was mad...
PDO MySQL扩展模块 检测通不过？ - PHP - 清泛IT论坛，有思想、有深度
php.in中下面两行已经放开注释：
extension=pdo.so
extension=pdo_mysql.so
PDO检测仍然通不过。
终极解决方案：
php编译时加上如下参数，重新编译安装php：
--with-pdo-mysql
php编译安装完整参数请参见：http://www.tsingfun.com/html/2015/env_0826...
Why would I use Scala/Lift over Java/Spring? [closed]
...(and you know Scala well already), you can work things out in fairly short order.
Both frameworks are compelling. There's a broad range of apps where you can choose either and do well.
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Facebook Android Generate Key Hash
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In order to generate key hash you need to follow some easy steps.
1) Download Openssl from: here.
2) Make a openssl folder in C drive
3) Extract Zip files into this openssl folder created in C Drive.
4) Copy the File debug....
What is 'YTowOnt9'?
...e64 encoded PHP-serialized values do too, but when they are empty they are all the same. It makes it look as if a lot of very different PHP scripts have this random string in common.
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Regex: match everything but specific pattern
...thing but a string starting with a specific pattern (specifically index.php and what follows, like index.php?id=2342343 )
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“’” showing on page instead of “ ' ”
...0xE2 0x84 0xA2.
These are the bytes your browser is actually receiving in order to produce ’ when processed as UTF-8.
That means that your source data is going through two charset conversions before being sent to the browser:
The source ’ character (U+2019) is first encoded as UTF-8 byt...