In computer programming, apply applies a function to a list of arguments.

Calling or "applying" a function to an argument is usually written without parentheses, so instead of .

Functions (custom and built-in): derive a value by applying a function to one or more parameters.

Applying a function to a value is expressed as simply .

Applying a monotonically decreasing function to both sides of an inequality means the opposite inequality now holds.

Instead, the functions are defined using combinators and higher-level abstractions like map (which applies a function to each element of a list).

In other words, new solutions are obtained by applying a function to the set of existing solutions.

Conversely, to apply a function encapsulated in such a way as a value, one must use the operator instead of calling it directly.

This is accomplished by applying a cryptographic one-way function to the information.

In many applications the units of these networks apply a sigmoid function as an activation function.