Hi Monks,

I have a string of 0s and I am trying to convert 0s to numerical values to that given index and offset. for example:

my $VALUE = "0\t" x 10; ## array of 0s and I having \t because I want 
+a delimited outputfile
chop($VALUE);
print "First statement: ,$VALUE,"\n";
my $signal = "0.5\t0.845";
substr($VALUE, 2,2) =~ s/0/$signal/g; ## want to make changes at index
+ 2 and 3
print "Second statement: ",$VALUE,"\n";

[download]
******Results:*******

First statement: 0    0    0    0    0    0    0    0    0    0    
Second statement: 0    0.5    0.845    0    0    0    0    0    0    0
+    0

[download]

I can understand how perl is thinking about it. As it is making the changes at index 2 and not 3. Therefore, I am getting a vector of 11 numbers rather than 10. One way could be using for loop and then making the change but I would like to know if there is a shorter way to do it rather than using loops. Thanks.

In reply to Substr Problem by snape

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