kou commented on code in PR #43882:
URL: https://github.com/apache/arrow/pull/43882#discussion_r1735706476
##########
ruby/red-arrow/lib/arrow/decimal128-array.rb:
##########
@@ -18,7 +18,9 @@
module Arrow
class Decimal128Array
def get_value(i)
- BigDecimal(format_value(i))
+ string = format_value(i)
+ string.sub!(".E", ".0E") if string.include?(".E")
Review Comment:
Hmm. Could you provide a code for your suggested approach?
FYI: Here is a benchmark script:
```ruby
#!/usr/bin/env ruby
require "benchmark"
n = 100000
Benchmark.bmbm do |x|
x.report("0.0E - nothing") do
n.times do
string = "0.0E"
string
end
end
x.report("0.E - nothing") do
n.times do
string = "0.E"
string
end
end
x.report("0.0E - include?") do
n.times do
string = "0.0E"
string.sub!(".E", ".0E") if string.include?(".E")
string
end
end
x.report("0.E - include?") do
n.times do
string = "0.E"
string.sub!(".E", ".0E") if string.include?(".E")
string
end
end
end
```
```text
Rehearsal ---------------------------------------------------
0.0E - nothing 0.007074 0.000452 0.007526 ( 0.007524)
0.E - nothing 0.006988 0.000000 0.006988 ( 0.006988)
0.0E - include? 0.015868 0.000000 0.015868 ( 0.015869)
0.E - include? 0.066138 0.000000 0.066138 ( 0.066140)
------------------------------------------ total: 0.096520sec
user system total real
0.0E - nothing 0.006819 0.000000 0.006819 ( 0.006819)
0.E - nothing 0.006878 0.000000 0.006878 ( 0.006878)
0.0E - include? 0.015696 0.000000 0.015696 ( 0.015697)
0.E - include? 0.066329 0.000000 0.066329 ( 0.066330)
```
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