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What is the right way to override a setter method in Ruby on Rails?
...r columns of a table while accessing through models, this is the way to do it.
class Model < ActiveRecord::Base
attr_accessible :attribute_name
def attribute_name=(value)
# custom actions
###
write_attribute(:attribute_name, value)
# this is same as self[:attribute_name] = v...
What does 'predicate' mean in the context of computer science? [duplicate]
Specifically I've seen it used in the context of text filtering. As if "predicate" == "filter criteria".
7 Answers
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Get The Current Domain Name With Javascript (Not the path, etc.)
I plan on buying two domain names for the same site. Depending on which domain is used I plan on providing slightly different data on the page. Is there a way for me to detect the actual domain name that the page is loading from so that I know what to change my content to?
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How to write log base(2) in c/c++
Is there any way to write log(base 2) function?
14 Answers
14
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How to use HttpWebRequest (.NET) asynchronously?
...follow
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edited Oct 27 '10 at 20:12
answered Oct 14 '08 at 21:17
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How to read integer value from the standard input in Java
...er;
//...
Scanner in = new Scanner(System.in);
int num = in.nextInt();
It can also tokenize input with regular expression, etc. The API has examples and there are many others in this site (e.g. How do I keep a scanner from throwing exceptions when the wrong type is entered?).
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Why is the time complexity of both DFS and BFS O( V + E )
The basic algorithm for BFS:
8 Answers
8
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WPF global exception handler [duplicate]
...metimes, under not reproducible circumstances, my WPF application crashes without any message. The application simply close instantly.
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Add params to given URL in Python
Suppose I was given a URL.
It might already have GET parameters (e.g. http://example.com/search?q=question ) or it might not (e.g. http://example.com/ ).
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How does one generate a random number in Apple's Swift language?
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Swift 4.2+
Swift 4.2 shipped with Xcode 10 introduces new easy-to-use random functions for many data types.
You can call the random() method on numeric types.
let randomInt = Int.random(in: 0..<6)
let randomDouble = Double.random(in: 2.71828...3.14159...