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What is the right way to override a setter method in Ruby on Rails?
...iginal Answer
If you want to override the setter methods for 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_...
Using :after to clear floating elements
...s well:
.clearfix:before,
.clearfix:after {
content: "";
display: table;
}
.clearfix:after {
clear: both;
}
/* IE 6 & 7 */
.clearfix {
zoom: 1;
}
Give the class clearfix to the parent element, for example your ul element.
Sources here and here.
...
What's the advantage of Logic-less template (such as mustache)?
... be that you want to put "odd" and "even" classes on alternating rows in a table, which could be done with a simple modulo operator in the view template. But if your view template doesn't allow you to do that, then in your model data you have to not only store which row is odd or even, but dependin...
MySQL Query - Records between Today and Last 30 Days
... the WHERE clause:
SELECT DATE_FORMAT(create_date, '%m/%d/%Y')
FROM mytable
WHERE create_date BETWEEN CURDATE() - INTERVAL 30 DAY AND CURDATE()
Also note that CURDATE() returns only the DATE portion of the date, so if you store create_date as a DATETIME with the time portion filled, this qu...
CSS Image size, how to fill, not stretch?
...n: absolute;
top: 0;
bottom: 0;
margin: auto;
display: table;
left: 50%;
}
.inner img {
display: block;
border: 1px solid blue; /* just for example */
position: relative;
right: 50%;
opacity: .5; /* just for example */
}
<div class="outer">...
How to fix the datetime2 out-of-range conversion error using DbContext and SetInitializer?
...l DateTime Start { get; set; } to datetime2 in corresponding column in the table. Because by default EF will map it to datetime.
This can be done by fluent API or data annotation.
Fluent API
In DbContext class overide OnModelCreating and configure property Start (for explanation reasons it's a ...
Moving matplotlib legend outside of the axis makes it cutoff by the figure box
...me!):
Code:
#==================================================
# Plot table
colmap = [(0,0,1) #blue
,(1,0,0) #red
,(0,1,0) #green
,(1,1,0) #yellow
,(1,0,1) #magenta
,(1,0.5,0.5) #pink
,(0.5,0.5,0.5) #gray
,(0.5,0,0) #brown
...
Too many 'if' statements?
...
If you cannot come up with a formula, you can use a table for such a limited number of outcomes:
final int[][] result = new int[][] {
{ 0, 0, 1, 2 },
{ 0, 0, 2, 1 },
{ 2, 1, 3, 3 },
{ 1, 2, 3, 3 }
};
return result[one][two];
...
How to find a Java Memory Leak
...ed. Basically, I can tell that there are several hundred megabytes of hash table entries ([java.util.HashMap$Entry or something like that), but maps are used all over the place... Is there some way to search for large maps, or perhaps find general roots of large object trees?
...
Convert timestamp to date in MySQL query
...
Convert timestamp to date in MYSQL
Make the table with an integer timestamp:
mysql> create table foo(id INT, mytimestamp INT(11));
Query OK, 0 rows affected (0.02 sec)
Insert some values
mysql> insert into foo values(1, 1381262848);
Query OK, 1 row affected (...