c++ std::find with lambda

std::find is a function in C++ that is used to search for a specific element in a given range. It takes two iterators (beginning and ending) that define the range to search in, and a value to search for. The function returns an iterator pointing to the first occurrence of the value in the range, or the ending iterator if the value is not found.

In order to use std::find with a lambda function, we need to pass the lambda function as an additional argument to std::find. The lambda function is a way to define an inline function, which can be used as a predicate to specify the criteria for the search.

Here are the steps involved in using std::find with a lambda function:

1. Define the range to search in using two iterators, let's call them "begin" and "end". These iterators should represent the beginning and ending of the range in which the search will be performed.

2. Define the lambda function that will be used as the predicate for the search. The lambda function should take one argument, which will be the value being compared to the elements in the range. The lambda function should return a boolean value indicating whether the element matches the desired criteria.

3. Call std::find, passing the range iterators and the lambda function as arguments. The function will return an iterator pointing to the first occurrence of the element that matches the criteria specified by the lambda function, or the ending iterator if the element is not found.

4. If std::find returns the ending iterator, it means that the element was not found in the range. If it returns a valid iterator, it means that the element was found.

That's it! By using std::find with a lambda function, you can search for elements in a range based on custom criteria defined by the lambda function.