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Re^3: determine the variable causing the error: Use of uninitialized value

by marinersk (Priest)
on Apr 14, 2017 at 04:42 UTC ( [id://1187910]=note: print w/replies, xml ) Need Help??


in reply to Re^2: determine the variable causing the error: Use of uninitialized value
in thread determine the variable causing the error: Use of uninitialized value

Thank you -- That was the closest thing I could come up with, so I should trust my instincts more.

So --

Since you didn't mention one, I presume there isn't an evalequivalent which does catch warnings?

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Re^4: determine the variable causing the error: Use of uninitialized value
by kcott (Archbishop) on Apr 14, 2017 at 05:22 UTC

    You could use 

    {
    local $SIG{__WARN__} = sub { ... };
    eval { ... };
}

    [download]

    to trap the warning and do something special with it. However, I can't see that helping with identifying uninitialised values.

    There's example code in perlvar: %SIG.

    — Ken

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Re^4: determine the variable causing the error: Use of uninitialized value
by karlgoethebier (Abbot) on Apr 14, 2017 at 13:02 UTC
    "...catch warnings?"

    With use warnings FATAL => qw(uninitialized); it works with eval as well as with Try::Tiny. As AnomalousMonk suggested.

    «The Crux of the Biscuit is the Apostrophe»

    Furthermore I consider that Donald Trump must be impeached as soon as possible

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