Rewrite the provided code as an anonymous function.
function sum(a, b) {
  return a + b;
}
The code as an anonymous function can be written as:

let sum = function(a, b) {
  return a + b;
};
Complete the following task based on the instruction and optional input provided.### Instruction:
Rewrite the provided code as an anonymous function.

### Input:
function sum(a, b) {
  return a + b;
}

### Output:
The code as an anonymous function can be written as:

let sum = function(a, b) {
  return a + b;
};