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Rails extending ActiveRecord::Base
...y-patching.
Some people, when confronted with a problem, think “I know, I'll use
monkey patching.” Now they have two problems.
Monkey patching is easy and quick. But, the time and effort saved is always extracted back
sometime in the future; with compound interest. These days I limi...
Why do we need RESTful Web Services?
...tes that did not exist when the
browser was released? How can the
client know about these sites?
These may sound like inane questions, but if you know the answer, then you can start to see what REST is all about.
Look at StackOverflow for more benefits of REST. When I am looking at a question, I...
Get Base64 encode file-data from Input Form
...at, but it's here if you want to take a look; it's pretty neat.
What I do now:
The code for converting to string from a Uint8Array is pretty simple (where buf is a Uint8Array):
function uint8ToString(buf) {
var i, length, out = '';
for (i = 0, length = buf.length; i < length; i += 1) {...
How do I get the current absolute URL in Ruby on Rails?
...otocol}#{request.host_with_port}#{request.fullpath}", since request.url is now deprecated.
For Rails 2:
You can write request.url instead of request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address.
...
Extract traceback info from an exception object
Given an Exception object (of unknown origin) is there way to obtain its traceback? I have code like this:
5 Answers
...
How to pass parameters to anonymous class?
...vent e) {
// How would one access myVariable here?
// It's now here:
System.out.println("Initialized with value: " + anonVar);
}
private ActionListener init(int var){
anonVar = var;
return this;
}
}.init(myVariable) );
No 'final' declaration nee...
Regex Named Groups in Java
...
(Update: August 2011)
As geofflane mentions in his answer, Java 7 now support named groups.
tchrist points out in the comment that the support is limited.
He details the limitations in his great answer "Java Regex Helper"
Java 7 regex named group support was presented back in September 2...
MVC4 StyleBundle not resolving images
...e).
Update
As per the comment below by @Hao Kung, alternatively this may now be achieved by applying a CssRewriteUrlTransformation (Change relative URL references to CSS files when bundled).
NOTE: I have not confirmed comments regarding issues with rewriting to absolute paths within a virtual di...
How to create a trie in Python
... I'd stick with dict.setdefault() (it's underutilised and not nearly well-known enough), in part because it helps prevent bugs that are too easy to create with a defaultdict (where you'd not get a KeyError for non-existing keys on indexing). The only thing now that would make it useable for producti...
Drop all duplicate rows across multiple columns in Python Pandas
...
This is much easier in pandas now with drop_duplicates and the keep parameter.
import pandas as pd
df = pd.DataFrame({"A":["foo", "foo", "foo", "bar"], "B":[0,1,1,1], "C":["A","A","B","A"]})
df.drop_duplicates(subset=['A', 'C'], keep=False)
...