Re: Injecting names & method chaining (was Re: [ANN] Penlight Libraries, First release)

[David Manura <dm.lua@...>]

On Fri, May 1, 2009 at 11:31 PM, David Manura wrote:
> Or in standard Lua, we could write a helper function like
>    chain(stringx, trim, 1,repeatchars,5, "  test  ")

Actually, more like chain(stringx, 'trim', 1,'repeatchars',5, 'upper',
nil, '  test  ').

Another idea is chain(stringx):trim():repeatchars(5):upper()('  test
'), which may be preferable to the current approach in
MethodChainingWrapper.  That even allows separation and reuse like

  f = chain(stringx):trim():repeatchars(5):upper()
  print ( f('  test  ') )
  print ( f('  again  ') )