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How do I force Postgres to use a particular index?
...d, client_id, date, and description. You want to run the following query:
SELECT client_id, SUM(amount)
FROM transactions
WHERE date >= 'yesterday'::timestamp AND date < 'today'::timestamp AND
description = 'Refund'
GROUP BY client_id
PostgreSQL may choose to use the index transaction...
How to pass table value parameters to stored procedure from .net code
...;T, TProperty>(this IEnumerable<T> list, Func<T, TProperty> selector)
{
var tbl = new DataTable();
tbl.Columns.Add("Id", typeof(T));
foreach (var item in list)
{
tbl.Rows.Add(selector.Invoke(item));
}
return tbl;
...
Best Practice: Access form elements by HTML id or name attribute?
... restrictions on the value of the name attribute, so e.g. you can have <select name="a+b"> or <input type="text" name="...2">, which can't be referenced using javascript .propertyName notation). Explicit [] notation also allows names built from expressions, e.g. myCheckBox = document.ge...
Visual Studio: Relative Assembly References Paths
...n Visual Studio GUI by right-clicking the project in Solution Explorer and selecting Add Reference...
Find the *.csproj where this reference exist and open it in a text editor
Edit the < HintPath > to be equal to
<HintPath>..\..\myReferences\myDLL.dll</HintPath>
This now refer...
Using CSS how to change only the 2nd column of a table
...
@Deeksy - That's not accurate, it doesn't care what the selector is. nth-child is applied after finding the element, and it's nth compared to whatever parent it has, no matter if it was in the selector or not. You can see this working here: jsfiddle.net/JQQPz
...
Install Gem from Github Branch?
...file.5.html#GIT
Update: There's a github source identifier.
gem 'country_select', github: 'stefanpenner/country_select'
However, they warn against using it: NOTE: This shorthand should be avoided until Bundler 2.0, since it currently expands to an insecure git:// URL. This allows a man-in-the-mi...
Getting exact error type in from DbValidationException
... string errorMessages = string.Join("; ", ex.EntityValidationErrors.SelectMany(x => x.ValidationErrors).Select(x => x.PropertyName + ": " + x.ErrorMessage));
throw new DbEntityValidationException(errorMessages);
}
}
This will overwrite your context's SaveChanges() method a...
ASP.NET “special” tags
...y (updateable) binding through Eval, Xpath, Bind, or expressions (e.g. the selected value of a drop-down control). Binds expressions to data-bound control properties through the control's attribute markup, or as a separate tag which generates a DataBoundLiteralControl instance with the value on its ...
d3 axis labeling
...e charts. You are given the building blocks, an axis component, data join, selection and SVG. It's your job to put them together to form a chart!
If you want a conventional chart, i.e. a pair of axes, axis labels, a chart title and a plot area, why not have a look at d3fc? it is an open source set ...
How to write a Unit Test?
...l,calculatedVal).
Test your method by running it (in Eclipse, right click, select Run as → JUnit test).
//for normal addition
@Test
public void testAdd1Plus1()
{
int x = 1 ; int y = 1;
assertEquals(2, myClass.add(x,y));
}
Add other cases as desired.
Test that your binary sum doe...