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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
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Read the slice syntax array[x,y] as "starting after x elements in array, select up to y elements". This is only meaningful if array has at least x elements.
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Dynamic LINQ OrderBy on IEnumerable / IQueryable
...ia
orderby GetPropertyValue(enumerable,"SomeProperty")
select enumerable
private static object GetPropertyValue(object obj, string property)
{
System.Reflection.PropertyInfo propertyInfo=obj.GetType().GetProperty(property);
return propertyInfo.GetValue(obj, null);
}
No...
EditorFor() and html properties
...ring GetAttributesString()
{
return string.Join(" ", moreAttributes.Select(x => x.Key + "='" + x.Value + "'").ToArray()); // don't forget to encode
}
}
In the template you can do this:
<input value="<%= Model.Value %>" <%= Model.GetAttributesString() %> />
In your...
PHP + MySQL transactions examples
..._connect("localhost","Dude1", "SuperSecret") or die(mysql_error());
mysql_select_db("bedrock") or die(mysql_error());
$query = "INSERT INTO employee (ssn,name,phone) values ('123-45-6789','Matt','1-800-555-1212')";
begin(); // transaction begins
$result = mysql_query($query);
if(!$result){
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SQL: How to get the count of each distinct value in a column?
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SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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How to generate service reference with only physical wsdl file
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This may be the easiest method
Right click on the project and select "Add Service Reference..."
In the Address: box, enter the physical path (C:\test\project....) of the downloaded/Modified wsdl.
Hit Go
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
...d_safe --skip-grant-tables &
Log into MySQL using root
mysql -uroot
Select the MySQL database to use
use mysql;
Reset the password
-- MySQL version < 5.7
update user set password=PASSWORD("mynewpassword") where User='root';
-- MySQL 5.7, mysql.user table "password" field -> "authent...
Is it possible to use JavaScript to change the meta-tags of the page?
...r color when the a slide in the header changes. const meta = document.querySelector('meta[name=theme-color]'); meta.setAttribute("content", colors[slideIndex]); Chrome on Android detects the update and changes the color
– Dominic Bartl
Dec 20 '18 at 10:00
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How do you use https / SSL on localhost?
...n your top level site --> Bindings
Add or edit a binding for https and select the SSL certificate called "localhost".
4.) Import Certificate to Chrome:
Chrome Settings --> Manage Certificates --> Import .pfx certificate from C:\certificates\ folder
Test Certificate by opening Chrome an...
django: BooleanField, how to set the default value to true?
...ou want to dynamically choose at runtime whether or not your field will be selected by default, you can use the initial parameter to the form when you initialize it:
form = MyForm(initial={'my_field':True})
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