From: Ruby Student <ruby.student@...>
Date: 2013-06-22T01:16:39+09:00
Subject: A question about assignment of multidimensional array error message

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Team,

The piece of code below is giving me an error which I can't find the
solution. The assignment below for *
msgCount[r][c] = mtc *is trwoing an exception. which I list below.

Any suggestions?

###################################################################
#Date      READ     ENTRY    DELETE    ALARM   HOTLIST   SITE     #
#20130611  2000000  200000   200000    2000    2000      20000    #
#20130611  2000000  200000   200000    2000    2000      20000    #
###################################################################

msgCount = Array.new            # Empty array. Will have size of [r][7].
Rows will grow

fn   = "/home/rb/MyData/dp/PR_LOGS/pr_time.log.*"

msgTypes = ["read", "entry", "delete", "alarm", "hotlist", "site"]

fnls = `ls #{fn}`.split         # Create fnls = file names list
fc = fnls.size                  # Number of files to be processed

fnls.each do |f|                # Process each file
   r = 0                        # Rows are controlled by fnls, number of
files
   lp,lg,dt = f.split('.')      # this info will be used later

   7.times do |c|               # Process each column
      mtc = `grep #{msgTypes[c]} #{f} | wc -l`  # Get Message Type Count
      *msgCount[r][c] = mtc*
      r += 1                    # Next row please
   end
end


*in `block (2 levels) in <main>': undefined method `[]=' for nil:NilClass
(NoMethodError)*

Thank you
-- 
Ruby Student

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<div dir=3D"ltr"><div><div>Team,<br><br></div>The piece of code below is gi=
ving me an error which I can&#39;t find the solution. The assignment below =
for <b><br>msgCount[r][c] =3D mtc </b>is trwoing an exception. which I list=
 below.<br>
<br></div>Any suggestions?<br><div><div><div><div><br>#####################=
##############################################<br>#Date=A0=A0=A0=A0=A0 READ=
=A0=A0=A0=A0 ENTRY=A0=A0=A0 DELETE=A0=A0=A0 ALARM=A0=A0 HOTLIST=A0=A0 SITE=
=A0=A0=A0=A0 #<br>#20130611=A0 2000000=A0 200000=A0=A0 200000=A0=A0=A0 2000=
=A0=A0=A0 2000=A0=A0=A0=A0=A0 20000=A0=A0=A0 #<br>
#20130611=A0 2000000=A0 200000=A0=A0 200000=A0=A0=A0 2000=A0=A0=A0 2000=A0=
=A0=A0=A0=A0 20000=A0=A0=A0 #<br>##########################################=
#########################<br><br>msgCount =3D Array.new=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 # Empty array. Will have size of [r][7]. Rows will grow<br>
<br>fn=A0=A0 =3D &quot;/home/rb/MyData/dp/PR_LOGS/pr_time.log.*&quot;<br><b=
r>msgTypes =3D [&quot;read&quot;, &quot;entry&quot;, &quot;delete&quot;, &q=
uot;alarm&quot;, &quot;hotlist&quot;, &quot;site&quot;]<br><br>fnls =3D `ls=
 #{fn}`.split=A0=A0=A0=A0=A0=A0=A0=A0 # Create fnls =3D file names list<br>
fc =3D fnls.size=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 # Numbe=
r of files to be processed<br><br>fnls.each do |f|=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0 # Process each file<br>=A0=A0 r =3D 0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 # Rows are controlle=
d by fnls, number of files<br>=A0=A0 lp,lg,dt =3D f.split(&#39;.&#39;)=A0=
=A0=A0=A0=A0 # this info will be used later<br>
<br>=A0=A0 7.times do |c|=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 # Proce=
ss each column<br>=A0=A0=A0=A0=A0 mtc =3D `grep #{msgTypes[c]} #{f} | wc -l=
`=A0 # Get Message Type Count<br>=A0=A0=A0=A0=A0 <b>msgCount[r][c] =3D mtc<=
/b><br>=A0=A0=A0=A0=A0 r +=3D 1=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 # Next row please<br>
=A0=A0 end<br>end<br><br><br><b>in `block (2 levels) in &lt;main&gt;&#39;: =
undefined method `[]=3D&#39; for nil:NilClass (NoMethodError)</b><br><br cl=
ear=3D"all"></div><div>Thank you<br></div><div>-- <br>Ruby Student
</div></div></div></div></div>

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