find vs findall vs tryfind

[melcher]

Proposed functionality for find/findAll:

  // Find an element
  // -- throws an exception unless results.length !== 1
  find('string') 

  // Find any/all elements
  // -- finds any number of elements (including 0)
  // -- could be used by the find function
  findAll('string') 

  // Find a specific number of elements
  // -- throws an exception unless results.length == number
  find(3, 'string')
  // alternatively
  find('string', {length: 3})

I believe this would remove the necessity for tryfind, as you could just do a findAll. This loosely borrows it's behavior/syntax from ActiveRecord, where find() will throw an exception or return 1 element and find_all just returns any number of elements and doesn't throw an exception in any case.

[melcher]

@EpiphanyMachine @bwest87 @khempenius thoughts?