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Disable Required validation attribute under certain circumstances
... following view models:
public UpdateViewView
{
[Required]
public string Id { get; set; }
... some other properties
}
public class InsertViewModel
{
public string Id { get; set; }
... some other properties
}
which will be used in their corresponding controller actions:
[Ht...
Where do I use delegates? [closed]
...which contains the desired time representation function as the value of an extra field, and which delegates all other field requests to the original connection object.
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How can I print the contents of a hash in Perl?
... learn this. Of course, each should be more efficient (because there's no extra hash lookup on the key). But it's ~30% slower!
– Jonathan Graehl
Jul 22 '09 at 8:12
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C: What is the difference between ++i and i++?
...nce.
For a for loop, use ++i, as it's slightly faster. i++ will create an extra copy that just gets thrown away.
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follow
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Move assignment operator and `if (this != &rhs)`
...re this implementation could be problematic.
The cost of the first is two extra stores. The cost of the second is a test-and-branch. Both work. Both meet all of the requirements of Table 22 MoveAssignable requirements in the C++11 standard. The third also works modulo the non-memory-resource-co...
How to obtain a Thread id in Python?
... @CharlesAnderson beware, the python docs on Thread.name say "name - A string used for identification purposes only. It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor."
– drevicko
Dec 4 '12 at 6:10
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How to parse JSON in Python?
...on out of. For the purposes of this, let's set it to some simple JSON in a string:
5 Answers
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Limit a stream by a predicate
...suming the predicate doesn't throw or have a side-effect if executed a few extra times). The problem is doing it in the context of recursive decomposition (fork/join framework) that Streams use. Really, it's Streams that are horribly inefficient.
– Aleksandr Dubinsky
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Spring Data JPA find by embedded object property
...gion() did not work for me. The following works with the latest release of String Data JPA:
Page<QueuedBook> findByBookId_Region(Region region, Pageable pageable);
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Check if PHP session has already started
...
An example for testing if session_id() returns empty string in an include file:
– tgoneil
Oct 5 '12 at 8:05
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