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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
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Where it is documented:
From the API documentation under the has_many association in "Module ActiveRecord::Associations::ClassMethods"
collection.build(attributes = {}, …)
Returns one or more new objects of the
collection type that have be...
How to make inline functions in C#
...t; 1;
Comparison<string> compare3 = compare1; // this one only works from C# 4.0 onwards
These can be invoked directly as if they were regular methods:
int x = add(23, 17); // x == 40
print(x); // outputs 40
helloWorld(x); // helloWorld has one int parameter declared: Action<int>
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Convert array of strings to List
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From .Net 3.5 you can use LINQ extension method that (sometimes) makes code flow a bit better.
Usage looks like this:
using System.Linq;
// ...
public void My()
{
var myArray = new[] { "abc", "123", "zyx" };
List...
Web API Routing - api/{controller}/{action}/{id} “dysfunctions” api/{controller}/{id}
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The possible reason can also be that you have not inherited Controller from ApiController.
Happened with me took a while to understand the same.
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Difference between RegisterStartupScript and RegisterClientScriptBlock?
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Here's a simplest example from ASP.NET Community, this gave me a clear understanding on the concept....
what difference does this make?
For an example of this, here is a way to put focus on a text box on a page when the page is loaded into the brow...
Python Threading String Arguments
...ecieved]) # <- 1 element list
processThread.start()
If you notice, from the stack trace: self.__target(*self.__args, **self.__kwargs)
The *self.__args turns your string into a list of characters, passing them to the processLine
function. If you pass it a one element list, it will pass that...
Bootstrap css hides portion of container below navbar navbar-fixed-top
...two lines. Therefore, I had to adjust the padding-top to prevent the menu from covering the content, hence 110px.
Hope this helps...
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How to vertically align into the center of the content of a div with defined width/height?
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I have researched this a little and from what I have found you have four options:
Version 1: Parent div with display as table-cell
If you do not mind using the display:table-cell on your parent div, you can use of the following options:
.area{
height: 10...
SQL Server - transactions roll back on error?
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From MDSN article, Controlling Transactions (Database Engine).
If a run-time statement error (such as a constraint violation) occurs in a batch, the default behavior in the Database Engine is to roll back only the stateme...
error C2440: \'initializing\' : cannot convert from \'char *\' to \'co...
error C2440: 'initializing' : cannot convert from 'char *' to 'const class std::basic_string *'error C2440: 'initializing' : cannot convert from 'char *' to 'const class std::basic_string<char,...error C2440: 'initializing' : cannot convert from 'char *' to 'const class std::basic_string<char,struct...