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How to check if a Constraint exists in Sql server?
... "constraints" such as Foreign Key constraints or Primary Key constraints, etc. For best results, always include the appropriate object type as the second parameter for the OBJECT_ID function:
Constraint Object Types:
C = CHECK constraint
D = DEFAULT (constraint or stand-alone)
F = FOREIGN KEY c...
Regular expression to allow spaces between words
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Nice Regex, much simpler then a lot of [0-9a-z] etc
– George
Jul 6 '16 at 1:16
I found in m...
What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
... request resources within the refreshed page, such as images, stylesheets, etc...
– James Hart
May 20 '11 at 14:54
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List of Rails Model Types
... i wish to add for those reading in future that when creating a migration etc car:references comes in very handy for creating a car_id foreign key.
– BKSpurgeon
Jul 25 '16 at 22:46
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HTTP 404 Page Not Found in Web Api hosted in IIS 7.5
...- any other modules you want to run in MVC e.g. FormsAuthentication, Roles etc. -->
</modules>
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void in C# generics?
...void> instead of Action, Func<T, void> instead of Action<T> etc.
It would also make async simpler - there'd be no need for the non-generic Task type at all - we'd just have Task<void>.
Unfortunately, that's not the way the C# or .NET type systems work...
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How does an underscore in front of a variable in a cocoa objective-c class work?
... must mean that they use it internally for their own frameworks like UIKit etc. Which is why we shouldn't carelessly use it. But I see that, in the link you provided @kelan. They actually say in the "revision history" that it is "suitable" to use (). I interpret is as we "can" use it if we want.
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Condition within JOIN or WHERE
Is there any difference (performance, best-practice, etc...) between putting a condition in the JOIN clause vs. the WHERE clause?
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Obtaining a powerset of a set in Java
...re going to iterate it that's obviously O(2^n).
contains() would be O(n), etc.
Do you really need this?
EDIT:
This code is now available in Guava, exposed through the method Sets.powerSet(set).
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
...Repository<Person, Long> {
@Query("SELECT p FROM Person p JOIN FETCH p.roles WHERE p.id = (:id)")
public Person findByIdAndFetchRolesEagerly(@Param("id") Long id);
}
This method will use JPQL's fetch join clause to eagerly load the roles association in a single round-trip to the dat...