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How to pass a function as a parameter in Java? [duplicate]

...), for example: public interface MyInterface { String doSomething(int param1, String param2); } then anywhere where MyInterface is used, you can substitute a lambda expression: class MyClass { public MyInterface myInterface = (p1, p2) -> { return p2 + p1; }; } For example, you can c...
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Determine a string's encoding in C#

...ncoding and the contents of the file. /// </summary> /// <param name="fileName"></param> /// <param name="contents"></param> /// <returns></returns> public static Encoding DetectEncoding(String fileName, out String contents) { ...
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What's the nearest substitute for a function pointer in Java?

...ymous inner class Say you want to have a function passed in with a String param that returns an int. First you have to define an interface with the function as its only member, if you can't reuse an existing one. interface StringFunction { int func(String param); } A method that takes the po...
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Convert string to nullable type (int, double, etc…)

... You can omit the "T type" parameter since it's not used. – Michael Meadows Apr 21 '09 at 15:25 1 ...
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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]

...of the matrix. The third column provides values for #' the matrix. #' #' @param data data.frame: input data #' @param rowtitle string: row-dimension; name of the column in data, which distinct values should be used as row names in the output matrix #' @param coltitle string: col-dimension; name of ...
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What is a “context bound” in Scala?

...nd feature, within the context of array improvements. Generally, a type parameter with a context bound is of the form [T: Bound]; it is expanded to plain type parameter T together with an implicit parameter of type Bound[T]. Consider the method tabulate which forms an array from the results of...
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How to send multiple data fields via Ajax? [closed]

...atter form is used, the data is converted into a query string using jQuery.param() before it is sent." – Jay Blanchard May 11 '16 at 20:15 add a comment  | ...
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Send email using java

...{ } /** * Send email using GMail SMTP server. * * @param username GMail username * @param password GMail password * @param recipientEmail TO recipient * @param title title of the message * @param message message to be sent * @throws AddressException i...
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How to assign an exec result to a sql variable?

...s back error status. If you need to pass back one value I'd use an output parameter. sample stored procedure, with an OUTPUT parameter: CREATE PROCEDURE YourStoredProcedure ( @Param1 int ,@Param2 varchar(5) ,@Param3 datetime OUTPUT ) AS IF ISNULL(@Param1,0)>5 BEGIN SET ...
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Binding a list in @RequestParam

I'm sending some parameters from a form in this way: 7 Answers 7 ...