Jira (PUP-2160) Undocumented hash lookup change in Puppet 3.5.0

[Charlie Sharpsteen (JIRA)]

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Charlie Sharpsteen commented on an issue   Re: Undocumented hash lookup change in Puppet 3.5.0 Used an inline_template to extract the variable value: $h = { "k1" => "value" } $v = $h["k2"] notice(inline_template('The value retrieved for $v is: <%= scope.lookupvar("v").inspect %>')) Looks like there is no change between 3.4.3 and 3.5.0 when using the standard evaluator, but there is a change when using the future evaluator: # puppet --version 3.4.3 # puppet apply hash_values.pp Notice: Scope(Class[main]): The value retrieved for $v is: :undef Notice: Compiled catalog for poss-head-centos.puppetdebug.vlan in environment production in 0.04 seconds Notice: Finished catalog run in 0.15 seconds # puppet apply hash_values.pp --parser=future Notice: Scope(Class[main]): The value retrieved for $v is: :undef Notice: Compiled catalog for poss-head-centos.puppetdebug.vlan in environment production in 0.80 seconds Notice: Finished catalog run in 0.15 seconds # puppet --version 3.5.0 # puppet apply hash_values.pp Notice: Scope(Class[main]): The value retrieved for $v is: :undef Notice: Compiled catalog for poss-head-centos.puppetdebug.vlan in environment production in 0.06 seconds Notice: Finished catalog run in 0.11 seconds # puppet apply hash_values.pp --parser=future Notice: Scope(Class[main]): The value retrieved for $v is: nil Notice: Compiled catalog for poss-head-centos.puppetdebug.vlan in environment production in 0.86 seconds Notice: Finished catalog run in 0.10 seconds # puppet apply hash_values.pp --parser=future --evaluator=current Notice: Scope(Class[main]): The value retrieved for $v is: :undef Notice: Compiled catalog for poss-head-centos.puppetdebug.vlan in environment production in 0.77 seconds Notice: Finished catalog run in 0.09 seconds Per Cederqvist: Were you using the future parser and evaluator? Add Comment   Puppet / PUP-2160 Undocumented hash lookup change in Puppet 3.5.0 Consider this code: {noformat} $h = { "k1" => "value" } $v = $h["k2"] {noformat} Puppet 3.5.0 sets $v to undef. Earlier versions set $v to the empty string, I believe. (Possibly that isn't true. Possibly it is instead some comparison changes that bites me.) What happens when you look up a non-existing key in a hash should be documented on htt... This message was sent by Atlassian JIRA (v6.1.4#6159-sha1:44eaede) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at http://groups.google.com/group/puppet-bugs. For more options, visit https://groups.google.com/d/optout.