Eval::TypeTiny(3pm)            User Contributed Perl Documentation            Eval::TypeTiny(3pm)



NAME
       Eval::TypeTiny - utility to evaluate a string of Perl code in a clean environment

STATUS
       This module is considered part of Type-Tiny's internals. It is not covered by the Type-
       Tiny stability policy.

DESCRIPTION
       This module is used by Type::Tiny to compile coderefs from strings of Perl code, and
       hashrefs of variables to close over.

   Functions
       This module exports one function, which works much like the similarly named function from
       Eval::Closure:

       "eval_closure(source => $source, environment => \%env, %opt)"

   Constants
       The following constants may be exported, but are not by default.

       "HAS_LEXICAL_SUBS"
           Boolean indicating whether Eval::TypeTiny has support for lexical subs.  (This feature
           requires Perl 5.18.)

       "HAS_LEXICAL_VARS"
           Don't worry; closing over lexical variables in the closures is always supported!
           However, if this constant is true, it means that Devel::LexAlias is available, which
           makes them slightly faster than the fallback solution which uses tied variables. (This
           only makes any difference when the "alias => 1" option is used.)

EVALUATION ENVIRONMENT
       The evaluation is performed in the presence of strict, but the absence of warnings. (This
       is different to Eval::Closure which enables warnings for compiled closures.)

       The feature pragma is not active in the evaluation environment, so the following will not
       work:

          use feature qw(say);
          use Eval::TypeTiny qw(eval_closure);

          my $say_all = eval_closure(
             source => 'sub { say for @_ }',
          );
          $say_all->("Hello", "World");

       The feature pragma does not "carry over" into the stringy eval. It is of course possible
       to import pragmas into the evaluated string as part of the string itself:

          use Eval::TypeTiny qw(eval_closure);

          my $say_all = eval_closure(
             source => 'sub { use feature qw(say); say for @_ }',
          );
          $say_all->("Hello", "World");

BUGS
       Please report any bugs to <http://rt.cpan.org/Dist/Display.html?Queue=Type-Tiny>.

SEE ALSO
       Eval::Closure, Error::TypeTiny::Compilation.

AUTHOR
       Toby Inkster <tobyink AT cpan.org>.

COPYRIGHT AND LICENCE
       This software is copyright (c) 2013-2014 by Toby Inkster.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES
       THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
       WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
       PURPOSE.



perl v5.20.0                                2014-09-02                        Eval::TypeTiny(3pm)