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Is there documentation for the Rails column types?
I'm looking for more than the simple type listing that is found on this page :
2 Answers
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Regular Expressions: Is there an AND operator?
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Use a non-consuming regular expression.
The typical (i.e. Perl/Java) notation is:
(?=expr)
This means "match expr but after that continue matching at the original match-point."
You can do as many of these as you want, and this will be...
How to create a zip archive of a directory in Python?
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As others have pointed out, you should use zipfile. The documentation tells you what functions are available, but doesn't really explain how you can use them to zip an entire directory. I think it's easiest to explain with some example code:
#!/usr/bin/env python
import os
import zip...
String replacement in java, similar to a velocity template
Is there any String replacement mechanism in Java, where I can pass objects with a text, and it replaces the string as it occurs.
For example, the text is :
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What's the point of map in Haskell, when there is fmap?
Everywhere I've tried using map , fmap has worked as well. Why did the creators of Haskell feel the need for a map function? Couldn't it just be what is currently known as fmap and fmap could be removed from the language?
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Formatting a float to 2 decimal places
I am currently building a sales module for a clients website. So far I have got the sale price to calculate perfectly but where I have come stuck is formatting the output to 2 decimal places.
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Repeater, ListView, DataList, DataGrid, GridView … Which to choose?
So many different controls to choose from! What are best practices for determining which control to use for displaying data in ASP.NET?
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ReadOnlyCollection or IEnumerable for exposing member collections?
...o expose an internal collection as a ReadOnlyCollection rather than an IEnumerable if the calling code only iterates over the collection?
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Implementing MVC with Windows Forms
Where can I find a good example on how to completely implement the MVC pattern in Windows Forms?
6 Answers
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What Content-Type value should I send for my XML sitemap?
I thought I should send "text/xml", but then I read that I should send "application/xml". Does it matter? Can someone explain the difference?
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