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nicomen/gist:76239cf63f812f33cd2ac73c70a350d4

Last active December 13, 2017 20:55
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promise recovery
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gistfile1.txt
$ perl -Ilib -wle 'use Mojo::Promise; for my $die (qw/0 1/) { warn "$die\n"; my $p = Mojo::Promise->new; $p->then(sub { die if $die; })->then(sub { return "survived"; }, sub { return "died"; })->then(sub { print shift . " but recovered" }); $p->resolve; $p->wait; }'
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survived but recovered
1
died but recovered
vs
$ perl -Ilib -wle 'use Mojo::Promise; for my $die (qw/0 1/) { warn "$die\n"; my $p = Mojo::Promise->new; $p->then(sub { die if $die; })->then(sub { return "survived"; }, sub { die "died"; })->then(sub { print shift . " but recovered" }, sub { print "died but not recovered" }); $p->resolve; $p->wait; }'
0
survived but recovered
1
died but not recovered
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