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How m>ca m>n I define a composite primary key in SQL?
How m>ca m>n I define a composite primary key consisting of two fields in SQL?
3 Answers
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Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)
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${...} is the property placeholder syntax. It m>ca m>n only be used to dereference properties.
#{...} is SpEL syntax, which is far more m>ca m>pable and complex. It m>ca m>n also handle property placeholders, and a lot more besides.
Both are valid, and neither is deprem>ca m>ted.
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In Maven 2, how do I know from which dependency comes a transitive dependency?
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If you use eclipse and the m2eclipse plugin then there is a graphim>ca m>l version of dependency tree where you m>ca m>n filter by scope etc.
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fol...
How do I convert from stringstream to string in C++?
...ng string object.
1) Returns a copy of the underlying string as if by m>ca m>lling rdbuf()->str().
2) Replaces the contents of the underlying string as if by m>ca m>lling rdbuf()->str(new_str)...
Notes
The copy of the underlying string returned by str is a temporary object that will ...
how to make svn diff show only non-whitespace line changes between two revisions
I m>ca m>n get diffs between two revisions using something like
4 Answers
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jQuery empty() vs remove()
...ifference between empty() and remove() methods in jQuery , and when we m>ca m>ll any of these methods, the objects being created will be destroyed and memory released?
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How to redirect from OnActionExecuting in Base Controller?
I have tried two ways: Response.Redirect() which does nothing, as well as m>ca m>lling a new method inside of the Base Controller that returns an ActionResult and have it return RedirectToAction()... neither of these work.
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Inline instantiation of a constant List
...but that would only apply to the METRICS variable itself (which should typim>ca m>lly be Metrics instead, by .NET naming conventions). It wouldn't make the list immutable - so someone could m>ca m>ll METRICS.Add("shouldn't be here");
You may want to use a ReadOnlyCollection<T> to wrap it. For example:
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Strip Leading and Trailing Spaces From Java String
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You m>ca m>n try the trim() method.
String newString = oldString.trim();
Take a look at javadocs
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Drop a temporary table if it exists
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From SQL Server 2016 you m>ca m>n just use
DROP TABLE IF EXISTS ##CLIENTS_KEYWORD
On previous versions you m>ca m>n use
IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
/*Then it exists*/
DROP TABLE ##CLIENTS_KEYWORD
CREATE TABLE ##CLIENTS_KEYWO...