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How do you validate a URL with a regular expression in Python?
I'm building an app on Google App Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.
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Java Generics (Wildcards)
I have a couple of questions about generic wildcards in Java:
6 Answers
6
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Get difference between two lists
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In [5]: list(set(temp1) - set(temp2))
Out[5]: ['Four', 'Three']
Beware that
In [5]: set([1, 2]) - set([2, 3])
Out[5]: set([1])
where you might expect/want it to equal set([1, 3]). If you do want set([1, 3]) as your answer, you'll need to use set([1, 2]).symmetric_difference(set([2, 3...
How do you split a list into evenly sized chunks?
I have a list of arbitrary length, and I need to split it up into equal size chunks and operate on it. There are some obvious ways to do this, like keeping a counter and two lists, and when the second list fills up, add it to the first list and empty the second list for the next round of data, but t...
Internet Explorer 9 not rendering table cells properly
My website has always run smoothly with IE8, IE7, FF, Chrome and Safari. Now I'm testing it on IE9 and I'm experiencing a strange problem: in some pages, some tabular data renders incorrectly.
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Why is a round-trip conversion via a string not safe for a double?
Recently I have had to serialize a double into text, and then get it back. The value seems to not be equivalent:
3 Answers
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Convert data.frame columns from factors to characters
I have a data frame. Let's call him bob :
18 Answers
18
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How to call a parent class function from derived class function?
... would like to make a call to the parents print function. How would I go about doing this?
7 Answers
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Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据 - 更多技术 - 清泛网 - ...
Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据mysql存储在磁盘中，各种天灾人祸都会导致数据丢失。大公司的时候我们常常需要做好数据冷热备，对于小公司来说要做好所有数据备份需要支出...mysql存储在磁盘中，各种天灾人祸...
Create a CSS rule / class with jQuery at runtime
...style element and insert it into DOM
$("<style type='text/css'> .redbold{ color:#f00; font-weight:bold;} </style>").appendTo("head");
$("<div/>").addClass("redbold").text("SOME NEW TEXT").appendTo("body");
tested on Opera10 FF3.5 iE8 iE6
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