pike.git/ lib/ modules/ Array.pmod

2003-09-04

2003-09-04 13:00:38 by Johan Sundström <oyasumi@gmail.com>

• 4d218bbf45be028f870f09ca050f9df7da2f12c5 (22 lines) (+22/-0) ^{[ Show | Annotate ]}
  Branch: 7.9

Array.partition might be handy once in a while too.

Rev: lib/modules/Array.pmod:1.93

778:    return 1;    return 0;   } +  + //! Splits an array in two, according to an arbitration function + //! @[arbiter]. The elements in @[a] who return non-zero for the + //! expression @[arbiter]( @[a][@i{i@}], @extra_args ) end up in + //! the first sub-array, the others in the second. The order is + //! preserved from the original array. + //! @example + //! Array.partition( enumerate( 9 ), lambda(int n) { return n>3 && n<7; } ); + //! > ({ ({ 4, 5, 6 }), ({ 0, 1, 2, 3, 7, 8 }) }) + //! @seealso + //! @[filter], @[`/], @[`%] + array(array) partition( array a, function arbiter, mixed ... extra_args ) + { +  array first = ({}), second = ({}); +  foreach( a, mixed elem ) +  if( arbiter( elem, @extra_args ) ) +  first += ({ elem }); +  else +  second += ({ elem }); +  return ({ first, second }); + }