However, he felt it was a bit crazy to do the test every time, given the
large size of the array.
H.
···
-----Original Message-----
From: Wayne Vucenic [mailto:nightphotos@gmail.com]
Sent: Friday, 5 November 2004 12:12
To: ruby-talk ML
Subject: Re: Cleaner way to do this?
How about
[1, 2, 3, 4, 5].each_with_index do |x, i|
if i == 0
print x
else
print ", ",x
end
end
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-----Original Message-----
From: Wayne Vucenic [mailto:nightphotos@gmail.com]
Sent: Friday, 5 November 2004 12:12
To: ruby-talk ML
Subject: Re: Cleaner way to do this?
How about
[1, 2, 3, 4, 5].each_with_index do |x, i|
if i == 0
print x
else
print ", ",x
end
end
That's what I initially suggested :-).
However, he felt it was a bit crazy to do the test every time, given the
large size of the array.
how about this?
arr = [1, 2, 3, 4, 5]
first = arr.shift
print arr.inject(first) { | c, i | "#{c.to_s}, #{i.to_s}" }
arr =
2000000.times do |i|
arr << "abcdefghijklmnopqrstuvwxyz"
end
f = File.new( "temp.txt" , "w+" )
t = Time.new
arr.each_with_index do |x,i|
if i==0
f.print x
else
f.print ', ',x
end end
f.close
puts "WRITING 1"
puts "Took: ", (Time.new.to_f - t.to_f).to_s, " seconds"
f = File.new( "temp.txt2" , "w+" )
t = Time.new
process = proc { |e| f.print e }.call( arr[0] )
arr[1...arr.length].each do |e|
f.print ', ',e
end
f.close
puts "WRITING 2"
print "Took: ", (Time.new.to_f- t.to_f).to_s, " seconds"
