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When to use symbols instead of strings in Ruby?
...as identifiers in your code. You should be worrying about what symbols are meant to be, not only when you should use symbols. Symbols are meant to be identifiers. If you follow this philosophy, chances are that you will do things right.
There are several differences between the implementation of s...
Understanding the Rails Authenticity Token
... get the same result every time)." Just a subtle clarification here. Safe means no side-effects. Idempotent means the same side effect no matter how many time a service is called. All safe services are inherently idempotent because there are no side effects. Calling GET on a current-time resource ...
How to customize ?
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@x-yuri what do you mean?
– Micaël Félix
Jul 27 '13 at 11:47
2
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ASP.NET MVC - Set custom IIdentity or IPrincipal
... how I do it.
I decided to use IPrincipal instead of IIdentity because it means I don't have to implement both IIdentity and IPrincipal.
Create the interface
interface ICustomPrincipal : IPrincipal
{
int Id { get; set; }
string FirstName { get; set; }
string LastName { get; set; }
}
...
How to handle Objective-C protocols that contain properties?
...at objects holding references to them can use them in specific ways.
That means in your class that conforms to your protocol, you have to do everything to make sure anObject works.
@property and @synthesize are at heart two mechanisms that generate code for you. @property is just saying there w...
How do I see active SQL Server connections?
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@Geo.Dude, Iman Abidi means crafting your own select query from sys.sysprocesses and adding a where clause to that query. You'll have to filter on dbid. You can find the database id in sys.databases (or you can join those two).
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How do I make a composite key with SQL Server Management Studio?
...ay! But the major problem is that they aren't repeatable and it generally means that people are making uncontrolled ad hoc changes and tweaks to fix database/schema problems. That's a very bad sign - they are undocumented (eg by having the code to fix written down and checked into version control ...
what is the difference between GROUP BY and ORDER BY in sql
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They have totally different meaning and aren't really related at all.
ORDER BY allows you to sort the result set according to different criteria, such as first sort by name from a-z, then sort by the price highest to lowest.
(ORDER BY name, price DESC...
Is Redis just a cache?
...ta structure server.
Being a cache in the form of a data structure server means a lot, because data structures are fundamentals of programs, or applications. Consider you are using SQL databases as storage technology and need to construct a list, a hash map, a ranking set or things like that, it's ...
How to Execute SQL Server Stored Procedure in SQL Developer?
...ond parameter...then at least you know your sytax is right..if doesnt work means you probanly dont have right stored proc name...try full qualified name..
– Vishal
Nov 9 '10 at 18:14
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