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Is there a fixed sized queue which removes excessive elements?
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There is no existing implementation in the Java Language and Runtime. All Queues extend AbstractQueue, and its doc clearly states that adding an element to a full queue always ends with an exception. It would be best ( and quite simple ) to w...
Does Java 8 provide a good way to repeat a value or function?
In many other languages, eg. Haskell, it is easy to repeat a value or function multiple times, eg. to get a list of 8 copies of the value 1:
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@UniqueConstraint annotation in Java
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To ensure a field value is unique you can write
@Column(unique=true)
String username;
The @UniqueConstraint annotation is for annotating multiple unique keys at the table level, which is why you get an error when applying it to a field.
References (JPA TopLink):
@UniqueConstraint
@Column
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How to unzip a list of tuples into individual lists? [duplicate]
I have a list of tuples, where I want to unzip this list into two independent lists. I'm looking for some standardized operation in Python.
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Why when a constructor is annotated with @JsonCreator, its arguments must be annotated with @JsonPro
In Jackson, when you annotate a constructor with @JsonCreator , you must annotate its arguments with @JsonProperty . So this constructor
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Search and Replace with RegEx components in Atom editor
... is a ".*" button at the right side. Click it and now it's regex mode.
I find
(http.*)\{\.uri\}
and replace to
[$1]($1)
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C++ static virtual members?
Is it possible in C++ to have a member function that is both static and virtual ? Apparently, there isn't a straightforward way to do it ( static virtual member(); is a compile error), but is there at least a way to achieve the same effect?
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Split a List into smaller lists of N size
I am attempting to split a list into a series of smaller lists.
17 Answers
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How to execute XPath one-liners from shell?
...s there a package out there, for Ubuntu and/or CentOS, that has a command-line tool that can execute an XPath one-liner like foo //element@attribute filename.xml or foo //element@attribute < filename.xml and return the results line by line?
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A python class that acts like dict
I want to write a custom class that behaves like dict - so, I am inheriting from dict .
9 Answers
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