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Why does one often see “null != variable” instead of “variable != null” in C#?
...ment requires a Boolean expression to start with, and the type of "x=5" is Int32, not Boolean.
I suggest that if you see this in your colleagues' code, you educate them in the ways of modern languages, and suggest they write the more natural form in future.
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Should I call Close() or Dispose() for stream objects?
...h as Stream , StreamReader , StreamWriter etc implements IDisposable interface. That means, we can call Dispose() method on objects of these classes. They've also defined a public method called Close() . Now that confuses me, as to what should I call once I'm done with objects? What if I ...
How to detect a loop in a linked list?
... move, but is later "teleported" to the position of the fast node at fixed intervals.
The description is available here : http://www.siafoo.net/algorithm/11
Brent claims that his algorithm is 24 to 36 % faster than the Floyd's cycle algorithm.
O(n) time complexity, O(1) space complexity.
public ...
How to intercept click on link in UITextView?
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Update: From ios10,
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange interaction:(UITextItemInteraction)interaction;
From ios7 and Later UITextView has the delegate method:
- (BOOL)textView:(UITextView *)textView shouldInteractWit...
Compelling examples of custom C++ allocators?
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As I mention here, I've seen Intel TBB's custom STL allocator significantly improve performance of a multithreaded app simply by changing a single
std::vector<T>
to
std::vector<T,tbb::scalable_allocator<T> >
(this is a quick and...
How do I right align controls in a StatusStrip?
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For me it took two simple steps:
Set MyRightIntendedToolStripItem.Alignment to Right
Set MyStatusStrip.LayoutStyle to HorizontalStackWithOverflow
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Rails 3 datatypes?
...d a list of data types that can be used in rails 3? (such as text, string, integer, float, date, etc.?) I keep randomly learning about new ones, but I'd love to have a list I could easily refer to.
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How to add new column to MYSQL table?
... Thanks, It worked with - mysql_query("ALTER TABLE assessment ADD q6 INT(1) NOT NULL AFTER q5");
– Steven Trainor
Apr 19 '13 at 21:33
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Does Spring Data JPA have any way to count entites using method name resolving?
... both count and delete queries. Read this, (Example 5).
Example,
public interface UserRepository extends CrudRepository<User, Integer> {
Long countByName(String name);
}
2) The old way, Using @Query annotation.
Example,
public interface UserRepository extends CrudRepository<User...
In MySQL, can I copy one row to insert into the same table?
I just want to copy one row to insert into the same table (i.e., I want to duplicate an existing row in the table) but I want to do this without having to list all the columns after the "select", because this table has too many columns.
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