Re: Try::Tiny and -E

[haukex]

Because -E implicitly enables all optional features and builtins, which as of 5.40 includes The 'try' feature, and AFAICT that try requires a catch.

[1nickt]

Thank you.

[ikegami]

Ways to address this:

• You can convert to using the builtin feature.

  $ perl -E'try { 1/0 } catch ( $e ) { }; say "ok"'   # Using 5.40
  ok
  

• You can follow add no feature qw( try );

  $ perl -MTry::Tiny -E'no feature qw( try ); try { 1/0 }; say "ok"'
  ok
  

• You can use an older version of the "language" (even if you're using the 5.40 interpreter).

  $ perl -Mv5.38 -MTry::Tiny -e'try { 1/0 }; say "ok"'
  ok
  

  (5.10 would suffice for this program.)

---

As you might have noticed, -E isn't forward compatible. Your program would have worked with 5.38, but it doesn't with 5.40. If it's not a throwaway program, it's safer to use

-e'use v5.xx; ...'

or

-Mv5.xx -e'...'

instead of

-E'...'   # XXX Not forward-compatible.

[atcroft]

You *could* also do this:
perl -MTry::Tiny -E 'Try::Tiny::try { 1 / 0 } Try::Tiny::catch { print $_ };'
which (as expected) generates:
Illegal division by zero at -E line 1.

Hope that helps.

[1nickt]

Thank you.