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@UniqueConstraint and @Column(unique = true) in hibernate annotation
What is difference between @UniqueConstraint and @Column(unique = true) ?
4 Answers
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How can I tell if one commit is a descendant of another commit?
...t way would be to git checkout -b quickcheck <more-recent-commit-ID> and then git branch --contains <older-commit-ID> (and then git branch -D quickcheck to get rid of the temporary branch).
– clee
Jun 10 '10 at 20:23
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What are the First and Second Level caches in Hibernate?
Can anyone explain in simple words what First and Second Level caching in Hibernate are?
7 Answers
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Rails params explained?
Could anyone explain params in Rails controller: where they come from, and what they are referencing?
5 Answers
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What is the difference between Step Into and Step Over in the Eclipse debugger?
...le flow of a Java program. What is the difference between F5 (step into) and F6 (step over) in eclipse?
5 Answers
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How do I get currency exchange rates via an API such as Google Finance? [closed]
Now, I did find the Google Finance API and started looking through that but I found a lot of info about portfolios, transactions, positions & other stuff I know nothing about.
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What are the main purposes of using std::forward and which problems it solves?
...arding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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Syntax for creating a two-dimensional array
...ry the following:
int[][] multi = new int[5][10];
... which is a short hand for something like this:
int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];
Note that every element will be initialized...
What is the difference between '/' and '//' when used for division?
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In Python 3.x, 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the latter is floor division, sometimes also called integer division.
In Python 2.2 or later in the 2.x line, there is no difference for integers unless y...
Regex to validate password strength
...ex. To many times I use complex regex that I found, without really understanding what is going on.
– Nicholas Smith
Jan 27 '14 at 17:54
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