thanks for the explanation Roger,

but concerning the 'defined' in the loop my code break breaks with this error: 

Use of uninitialized value in scalar chomp at /data/tmp/test_check_fie
+ld.pl line 31, <$fh> line 2.
<br><br>
Use of uninitialized value in split at /data/tmp/test_check_field.pl l
+ine 32, <$fh> line 2.
<br>
*** ERROR number of fields !=4

[download]
after reading perldoc 'defined' :

defined Returns a Boolean value telling whether EXPR has a value other than the undefined value "undef". If EXPR is not present, $_ will be checked.

it seems to me that it's normal that my code break as it's not the value of the line that is returned but instead the boolean value of 'defined'..or am i wrong somewhere ?

In reply to Re: Re: Re: Re: advice for reading data from a file by Anonymous Monk
in thread advice for reading data from a file by Anonymous Monk

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