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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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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...
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...
Android ACTION_IMAGE_CAPTURE Intent
We are trying to use the native camera app to let the user take a new picture. It works just fine if we leave out the EXTRA_OUTPUT extra and returns the small Bitmap image. However, if we putExtra(EXTRA_OUTPUT,...) on the intent before starting it, everything works until you try to hit the "Ok" ...
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...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
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Well....Java is actually more portable. Mono isn't implemented everywhere, and it lags behind the Microsoft implementation significantly. The Java SDK seems to stay in better sync across platforms (and it works on more platforms).
I'd also say Java has more tool availability a...
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...