| 1 | -------------
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| 2 | Version 5.000
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| 3 | -------------
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| 4 |
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| 5 | New things
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| 6 | ----------
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| 7 | The -w switch is much more informative.
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| 8 |
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| 9 | References. See t/op/ref.t for examples. All entities in Perl 5 are
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| 10 | reference counted so that it knows when each item should be destroyed.
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| 11 |
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| 12 | Objects. See t/op/ref.t for examples.
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| 13 |
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| 14 | => is now a synonym for comma. This is useful as documentation for
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| 15 | arguments that come in pairs, such as initializers for associative arrays,
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| 16 | or named arguments to a subroutine.
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| 17 |
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| 18 | All functions have been turned into list operators or unary operators,
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| 19 | meaning the parens are optional. Even subroutines may be called as
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| 20 | list operators if they've already been declared.
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| 21 |
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| 22 | More embeddible. See main.c and embed_h.sh. Multiple interpreters
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| 23 | in the same process are supported (though not with interleaved
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| 24 | execution yet).
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| 25 |
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| 26 | The interpreter is now flattened out. Compare Perl 4's eval.c with
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| 27 | the perl 5's pp.c. Compare Perl 4's 900 line interpreter loop in cmd.c
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| 28 | with Perl 5's 1 line interpreter loop in run.c. Eventually we'll make
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| 29 | everything non-blocking so we can interface nicely with a scheduler.
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| 30 |
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| 31 | eval is now treated more like a subroutine call. Among other things,
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| 32 | this means you can return from it.
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| 33 |
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| 34 | Format value lists may be spread over multiple lines by enclosing in
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| 35 | a do {} block.
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| 36 |
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