Programmatically get a Storyboard ID?
You can use the restorationIdentifier, it’s right above the Storyboard identifier and it’s a UIViewController property.
identity
SQL Server 2005 – using generated sequences instead of Identity columns?
Yes, SQL 11 has SEQUENCE objects, see SQL Server v.Next (Denali) : Using SEQUENCE. Creating manual sequences is possible, but not recommended. The trick to do a sequence generator is to use UPDATE WITH OUTPUT on a sequences table. Here is pseudo-code: CREATE TABLE Sequences ( Name sysname not null primary key, Sequence bigint not … Read more
SQL server identity column values start at 0 instead of 1
From DBCC CHECKIDENT DBCC CHECKIDENT ( table_name, RESEED, new_reseed_value ) If no rows have been inserted to the table since it was created, or all rows have been removed by using the TRUNCATE TABLE statement, the first row inserted after you run DBCC CHECKIDENT uses new_reseed_value as the identity. Otherwise, the next row inserted uses … Read more
How does Hibernate detect dirty state of an entity object?
Hibernate uses a strategy called inspection, which is basically this: when an object is loaded from the database a snapshot of it is kept in memory. When the session is flushed Hibernate compares the stored snapshot with the current state. If they differ the object is marked as dirty and a suitable SQL command is … Read more
python is operator behaviour with string [duplicate]
One important thing about this behavior is that Python caches some, mostly, short strings (usually less than 20 characters but not for every combination of them) so that they become quickly accessible. One important reason for that is that strings are widely used in Python’s source code and it’s an internal optimization to cache some … Read more
ExpireTimeSpan ignored after regenerateIdentity / validateInterval duration in MVC Identity (2.0.1)
When the SecurityStampValidator fires the regenerateIdentity callback, the currently authenticated user gets re-signed in with a non-persistent login. This is hard-coded, and I don’t believe there is any way to directly control it. As such, the login session will continue only to the end of the browser session you are running at the point the … Read more
How to test for (ActiveRecord) object equality
Rails deliberately delegates equality checks to the identity column. If you want to know if two AR objects contain the same stuff, compare the result of calling #attributes on both.
SQLServer IDENTITY Column with text
In addition to the other answers, you could create a computed column on the table to provide what you are asking for. CREATE TABLE dbo.MyTable ( Id int NOT NULL PRIMARY KEY, CombinedId AS ‘ABCD-‘ + CAST(Id as varchar(16)) ) Or: CREATE TABLE dbo.MyTable ( Id int NOT NULL PRIMARY KEY, PrefixField varchar(16), CombinedId AS … Read more
Does Java guarantee that Object.getClass() == Object.getClass()?
Yes, class tokens are unique (for any given classloader, that is). I.e. you will always get a reference to the same physical object within the same classloader realm. However, a different classloader will load a different class token, in conjunction with the fact that the same class definition is deemed different when loaded by two … Read more