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#1
05-16-07, 10:39 PM
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I would like to create a hashtable with the result from a pipe.
The mission is to read a file and create a hashtable with a linenumber. Like lnum line 1 something 2 some other stuff 3 even more.... .... ... I tried with $lines = gc "c:\test.txt" | &{$a=0}{$a++; @{lnum=$a; $line=$_} } but $lines is empty. What is the trick here? thanks, |
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#2
05-16-07, 10:55 PM
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"gurbao" <audunj> wrote in message
news:9370 > > I would like to create a hashtable with the result from a pipe. > The mission is to read a file and create a hashtable with a > linenumber. > > Like > > lnum line > 1 something > 2 some other stuff > 3 even more.... > ... ... > > I tried with > $lines = gc "c:\test.txt" | &{$a=0}{$a++; @{lnum=$a; $line=$_} } > > but $lines is empty. > > What is the trick here? Try this: 685# $lines = gc "c:\test.txt" | %{$ht=@{};$a=1}{$ht[$a++] = $_}{$ht} In a hash table you can't really rename the Name/Value properties and I think you want the line info to be in the same hashtable. In your approach, you're creating a new hashtable for every line of the file. |
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#3
05-18-07, 02:03 PM
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On May 16, 5:39 pm, gurbao <aud> wrote:
[..] > ... ... > > I tried with > $lines = gc "c:\test.txt" | &{$a=0}{$a++; @{lnum=$a; $line=$_} } > > but $lines is empty. > > What is the trick here? > > thanks, 1# function file2hashtable { begin { $h = @{}; $i=0 } process { $h.add($i++, $_) } end { $h } } 2# $ht = (gc file.txt | file2hashtable) - Oisin |
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Creating a hashtable in the pipeline?