I may be showing my ignorance here, but why are lambda expressions called lambda expressions. I understand how to use them, but I'm curious if there is any significance to the term "lambda".
They're being added in as part of Project Lambda. But what is a Lambda expression? The term “Lambda” comes from mathematics, where it's called lambda calculus. In programming, a Lambda expression (or function) is just an anonymous function, i.e., a function with no name.
a function that can be treated as an object is just a delegate. What makes a lambda a closure is that it captures its outer variables. lambda expressions converted to expression trees also have closure semantics, interestingly enough.
Lambda functions are intended as a shorthand for defining functions that can come in handy to write concise code without wasting multiple lines defining a function. They are also known as anonymous functions, since they do not have a name unless assigned one.
"A closure is a lambda expression paired with an environment that binds each of its free variables to a value. In Java, lambda expressions will be implemented by means of closures, so the two terms have come to be used interchangeably in the community."
The term derived from mathematical key word only.
Wiki info : Lambda calculus
check this : http://dictionary.reference.com/browse/lambda+expression
Because they come from Church's lambda calculus.
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