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How to set default values in Rails?
...rectly calling .allocate was about model objects loaded with existing data from the database. (And it's a terrible idea for ActiveRecord to work that way, IMO. But that's beside the point.)
– SFEley
Mar 10 '11 at 7:55
...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...d counts (and ignoring word order). We begin by making a list of the words from both texts:
me Julie loves Linda than more likes Jane
Now we count the number of times each of these words appears in each text:
me 2 2
Jane 0 1
Julie 1 1
Linda 1 0
likes 0 1
loves 2 1
mo...
How do I vertically align text in a div?
...browsers (Internet Explorer 6/7) into styles with using # to hide styles from newer browsers:
div { border:1px solid green;}
<div style="display: table; height: 400px; #position: relative; overflow: hidden;">
<div style=
"#position: absolute; #top: 50%;display: table-cell; v...
When to use an assertion and when to use an exception
...t the harddrive suddenly disappears.
An assertion would stop the program from running, but an exception would let the program continue running.
Note that if(group != null) is not an assertion, that is just a conditional.
...
Casting a variable using a Type variable
...each one.
private static Func<object, object> MakeCastDelegate(Type from, Type to)
{
var p = Expression.Parameter(typeof(object)); //do not inline
return Expression.Lambda<Func<object, object>>(
Expression.Convert(Expression.ConvertChecked(Expression.Convert(p, fro...
keytool error Keystore was tampered with, or password was incorrect
...
From your description I assume you are on windows machine and your home is abc
So Now : Cause
When you run this command
keytool -genkey -alias tomcat -keyalg RSA
because you are not specifying an explicit keystore it wi...
Do copyright dates need to be updated? [closed]
... necessary for enforcement of a copyright notice.
Here is a resumé quoted from the Cornell University Law School (copied on March 4, 2015 from https://www.law.cornell.edu/wex/copyright:
"Copyright
copyright: an overview
The U.S. Copyright Act, 17 U.S.C. §§ 101 - 810, is Federal legislation enact...
How to hide only the Close (x) button?
...
there isn't a way other than to design your form from scratch.
– Daniel A. White
Sep 4 '11 at 20:21
...
MVC (Laravel) where to add logic
...r update the vote count of a post? What if you need to send the same email from another place in your code? Do you create a static method? What if that emails needs information from another model?
I think the model should represent an entity. With Laravel, I only use the model class to add things l...
Why does the arrow (->) operator in C exist?
...th * and . combination
The C language described by CRM was very different from the modern C in many respects. In CRM struct members implemented the global concept of byte offset, which could be added to any address value with no type restrictions. I.e. all names of all struct members had independen...