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15a6560abe9880705f51d219c1fa94f880dbaf35
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listings
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ch09-error-handling
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no-listing-06-question-mark-in-main
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src
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main.rs
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use
std
::
fs
::
File
;
fn
main
()
{
let
f
=
File
::
open
(
"hello.txt"
)?;
}