What you're looking at is an expression-bodied member not a lambda expression. When the compiler encounters an expression-bodied property member, it essentially converts it to a getter like this: Here the get method finds a key entry for 'e' and finds its value which is 1.

I want to get list of files (actually number of files) in a path, recursively, excluding certain types: Use the parse_url () and parse_str () methods. Parse_url() will parse a url string into an associative array of its parts. Since you only want a single part of the url, you can use a shortcut to return a …