Re: [PHP-DEV] [RFC] Pipe Operator

[lester]

However, 
passing an array to array_filter() then passing the result to 
array_map() is always type safe (because array_filter still returns an 
array even if it filters down to 0 items), and array_map on an empty 
array is essentially a no-op, so I'm comfortable doing so, and wish I 
could do so more often with less fugly syntax. :-)