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Assert an object is a specific type
Is it possible in JUnit to assert an object is an instance of a class? For various reasons I have an object in my test that I want to check the type of. Is it a type of Object1 or a type of Object2?
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SQL update fields of one table from fields of another one
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answered May 4 '10 at 15:41
Scott BaileyScott Bailey
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Is optimisation level -O3 dangerous in g++?
...rces (though mostly from a colleague of mine), that compiling with an optimisation level of -O3 in g++ is somehow 'dangerous', and should be avoided in general unless proven to be necessary.
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What do 'lazy' and 'greedy' mean in the context of regular expressions?
...ity it will be very greedy, and go from the first < to the last >. This means it will match <em>Hello World</em> instead of what you wanted.
Making it lazy (<.+?>) will prevent this. By adding the ? after the +, we tell it to repeat as few times as possible, so the first >...
Git: How to rebase to a specific commit?
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edited Jan 19 at 6:17
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Does a javascript if statement with multiple conditions test all of them?
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The && operator "short-circuits" - that is, if the left condition is false, it doesn't bother evaluating the right one.
Similarly, the || operator short-circuits if the left condition is true.
EDIT: Though, you shouldn't worry about performance until you've bench...
Add column with constant value to pandas dataframe [duplicate]
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The reason this puts NaN into a column is because df.index and the Index of your right-hand-side object are different. @zach shows the proper way to assign a new column of zeros. In general, pandas tries to do as much alignment of indices...
JPA: unidirectional many-to-one and cascading delete
...arent to the child (not just the opposite).
You'll therefore need to do this:
Either, change the unidirectional @ManyToOne relationship to a bi-directional @ManyToOne, or a unidirectional @OneToMany. You can then cascade REMOVE operations so that EntityManager.remove will remove the parent and th...
Creating Unicode character from its number
I want to display a Unicode character in Java. If I do this, it works just fine:
13 Answers
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How to get index using LINQ? [duplicate]
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An IEnumerable is not an ordered set.
Although most IEnumerables are ordered, some (such as Dictionary or HashSet) are not.
Therefore, LINQ does not have an IndexOf method.
However, you can write one yourself:
///<summary>Finds the...