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Rails 3 - can't install pg gem
...path to the pg_config. Try to install the gem using:
gem install pg -- --with-pg-config= 'PATH_TO_YOUR_PG_CONFIG'
If you are not sure where your pg_config is, and assuming you are on Linux or Mac, you can run the following command:
which pg_config
Your pg-config can be in different locations d...
What is this 'Lambda' everyone keeps speaking of?
... is this 'Lambda' everyone keeps speaking of? A lot of people seem to love it, but all I can gather from it is it is just a way of cramming lots of lines of code into a single expression.
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Imitate Facebook hide/show expanding/contracting Navigation Bar
...k iPhone app, when the user scrolls up the navigationBar gradually hides itself to a point where it completely vanishes. Then when the user scrolls down the navigationBar gradually shows itself.
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Catching “Maximum request length exceeded”
I'm writing an upload function, and have problems catching "System.Web.HttpException: Maximum request length exceeded" with files larger than the specified max size in httpRuntime in web.config (max size set to 5120). I'm using a simple <input> for the file.
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Colspan/Rowspan for elements whose display is set to table-cell
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As far as I know, the lack of colspan/rowspan is just one of the limitations of display:table. See this post:
http://www.onenaught.com/posts/201/use-css-displaytable-for-layout
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impro...
Difference between FetchType LAZY and EAGER in Java Persistence API?
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Sometimes you have two entities and there's a relationship between them. For example, you might have an entity called University and another entity called Student and a University might have many Students:
The University entity might have some basic ...
JavaScript: Object Rename Key
...that the renamed property behaves identically to the original one.
Also, it seems to me that the possibility to wrap this into a function/method and put it into Object.prototype is irrelevant regarding your question.
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How do I read and parse an XML file in C#?
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doc.LoadXml("<xml>something</xml>");
then find a node below it ie like this
XmlNode node = doc.DocumentElement.SelectSingleNode("/book/title");
or
foreach(XmlNode node in doc.DocumentElement.ChildNodes){
string text = node.InnerText; //or loop through its children as well
}
t...
How to return an empty ActiveRecord relation?
If I have a scope with a lambda and it takes an argument, depending on the value of the argument, I might know that there will not be any matches, but I still want to return a relation, not an empty array:
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Importing from a relative path in Python
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EDIT Nov 2014 (3 years later):
Python 2.6 and 3.x supports proper relative imports, where you can avoid doing anything hacky. With this method, you know you are getting a relative import rather than an absolute import. The '...