Re^3: Uninitialized Value


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Re^3: Uninitialized Value

by vinoth.ree (Monsignor)

on May 18, 2015 at 17:30 UTC ( [id://1127039]=note: print w/replies, xml )

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in reply to Re^2: Uninitialized Value
in thread Uninitialized Value

Is there a way for the code to ignore the whitespace or any type of null in the data file?

while (<FILE>)
{
  if ($_ =~ /^$/)
  {
    print "it's blank\n";
    next; #process next line
  }
  else
  {
    print "it's NOT blank\n";  
  }
}
[download]

if($_ =~ /^$/) can also be written as if(/^$/)

All is well. I learn by answering your questions...

Comment on Re^3: Uninitialized Value Select or Download Code

Replies are listed 'Best First'.
Re^4: Uninitialized Value by marinersk (Priest) on May 18, 2015 at 19:13 UTC
`if ($_ =~ /^$/)` [download] This code does not detect whitepace (a line of all spaces, for example) as requested. Perhaps this would work better: `if ($_ =~ /^\s*$/)` [download]	[reply] [d/l] [select]
Re^4: Uninitialized Value by Not_a_Number (Prior) on May 18, 2015 at 20:07 UTC
...also, the `next` is unnecessary.	[reply] [d/l]

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