NAME
    `Struct::Dumb' - make simple lightweight record-like structures

SYNOPSIS
     use Struct::Dumb;
 
     struct Point => [qw( x y )];

     my $point = Point(10, 20);

     printf "Point is at (%d, %d)\n", $point->x, $point->y;

     $point->y = 30;
     printf "Point is now at (%d, %d)\n", $point->x, $point->y;



     struct Point3D => [qw( x y z )], named_constructor => 1;

     my $point3d = Point3D( z => 12, x => 100, y => 50 );

     printf "Point3d's height is %d\n", $point3d->z;



     use Struct::Dumb qw( -named_constructors )

     struct Point3D => [qw( x y z ];

     my $point3d = Point3D( x => 100, z => 12, y => 50 );

DESCRIPTION
    `Struct::Dumb' creates record-like structure types, similar to the
    `struct' keyword in C, C++ or C#, or `Record' in Pascal. An invocation
    of this module will create a construction function which returns new
    object references with the given field values. These references all
    respond to lvalue methods that access or modify the values stored.

    It's specifically and intentionally not meant to be an object class. You
    cannot subclass it. You cannot provide additional methods. You cannot
    apply roles or mixins or metaclasses or traits or antlers or whatever
    else is in fashion this week.

    On the other hand, it is tiny, creates cheap lightweight array-backed
    structures, uses nothing outside of core. It's intended simply to be a
    slightly nicer way to store data structures, where otherwise you might
    be tempted to abuse a hash, complete with the risk of typoing key names.
    The constructor will `croak' if passed the wrong number of arguments, as
    will attempts to refer to fields that don't exist.

     $ perl -E 'use Struct::Dumb; struct Point => [qw( x y )]; Point(30)'
     usage: main::Point($x, $y) at -e line 1

     $ perl -E 'use Struct::Dumb; struct Point => [qw( x y )]; Point(10,20)->z'
     main::Point does not have a 'z' field at -e line 1

  CONSTRUCTOR FORMS
    The `struct' and `readonly_struct' declarations create two different
    kinds of constructor function, depending on the setting of the
    `named_constructor' option. When false, the constructor takes positional
    values in the same order as the fields were declared. When true, the
    constructor takes a key/value pair list in no particular order, giving
    the value of each named field.

    This option can be specified to the `struct' and `readonly_struct'
    functions. It defaults to false, but it can be set on a per-package
    basis to default true by supplying the `-named_constructors' option on
    the `use' statement.

FUNCTIONS
  struct $name => [ @fieldnames ], %opts
    Creates a new structure type. This exports a new function of the type's
    name into the caller's namespace. Invoking this function returns a new
    instance of a type that implements those field names, as accessors and
    mutators for the fields.

    Takes the following options:

    named_constructor => BOOL
        Determines whether the structure will take positional or named
        arguments.

  readonly_struct $name => [ @fieldnames ], %opts
    Similar to `struct', but instances of this type are immutable once
    constructed. The field accessor methods will not be marked with the
    `:lvalue' attribute.

    Takes the same options as `struct'.

AUTHOR
    Paul Evans <leonerd@leonerd.org.uk>