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What does inverse_of do? What SQL does it generate?
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From the documentation, it seems like the :inverse_of option is a method for avoiding SQL queries, not generating them. It's a hint to ActiveRecord to use already loaded data instead of fetching it again through a relationship.
Their exa...
Garbage collector in Android
... seen many Android answers that suggest calling the garbage collector in some situations.
11 Answers
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Syntax behind sorted(key=lambda: …)
I don't quite understand the syntax behind the sorted() argument:
9 Answers
9
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When NOT to call super() method when overriding?
... class, I extend its native class. Then when I want to override the base method, I always call super() method, just like I always do in onCreate , onStop , etc.
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No connection could be made because the target machine actively refused it?
Sometimes I get the following error while I was doing HttpWebRequest to a WebService. I copied my code below too.
28 Answer...
LINQ to SQL Left Outer Join
... SelectMany and DefaultIfEmpty, for example:
var query = from c in db.Customers
join o in db.Orders
on c.CustomerID equals o.CustomerID into sr
from x in sr.DefaultIfEmpty()
select new {
CustomerID = c.CustomerID, ContactName = c.Cont...
Apache Tomcat Not Showing in Eclipse Server Runtime Environments
... installed, running and verifiable at http://localhost:8080/ . The Tomcat menu option appears in the Eclipse menu bar and I can start and stop Tomcat from there. In Eclipse, it does not show as a Server Runtime Environment in Window - Preferences - Server - Runtime Environments, nor does it appear ...
Algorithm to generate a crossword
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I came up with a solution which probably isn't the most efficient, but it works well enough. Basically:
Sort all the words by length, descending.
Take the first word and place it on the board.
Take the next word.
Search through...
How do I use Maven through a proxy?
...l settings ([maven install]/conf/settings.xml), or user settings (${user.home}/.m2/settings.xml) is configured correctly. It is better to do this in your user settings to avoid storing the password in plain text in a public location.
Maven 2.1 introduced password encryption, but I've not got round ...
How to do Base64 encoding in node.js?
... is needed. Buffers created with strings can take an optional encoding parameter to specify what encoding the string is in. The available toString and Buffer constructor encodings are as follows:
'ascii' - for 7 bit ASCII data only. This encoding method is very
fast, and will strip the high bi...