私は以下を試しました：
def measure(t)
single_measures = []
double_measures = []
double_quoted_string = ""
single_quoted_string = ''
single_quoted = 0
double_quoted = 0
t.times do |i|
t1 = Time.now
single_quoted_string << 'a'
t1 = Time.now - t1
single_measures << t1
t2 = Time.now
double_quoted_string << "a"
t2 = Time.now - t2
double_measures << t2
if t1 > t2
single_quoted += 1
else
double_quoted += 1
end
end
puts "Single quoted did took longer in #{((single_quoted.to_f/t.to_f) * 100).round(2)} percent of the cases"
puts "Double quoted did took longer in #{((double_quoted.to_f/t.to_f) * 100).round(2)} percent of the cases"
single_measures_avg = single_measures.inject{ |sum, el| sum + el }.to_f / t
double_measures_avg = double_measures.inject{ |sum, el| sum + el }.to_f / t
puts "Single did took an average of #{single_measures_avg} seconds"
puts "Double did took an average of #{double_measures_avg} seconds"
puts "\n"
end
both = 10.times do |i|
measure(1000000)
end
そしてこれらは出力です：
1。
Single quoted did took longer in 32.33 percent of the cases
Double quoted did took longer in 67.67 percent of the cases
Single did took an average of 5.032084099982639e-07 seconds
Double did took an average of 5.171539549983464e-07 seconds
2。
Single quoted did took longer in 26.9 percent of the cases
Double quoted did took longer in 73.1 percent of the cases
Single did took an average of 4.998066229983696e-07 seconds
Double did took an average of 5.223457359986066e-07 seconds
3。
Single quoted did took longer in 26.44 percent of the cases
Double quoted did took longer in 73.56 percent of the cases
Single did took an average of 4.97640888998877e-07 seconds
Double did took an average of 5.132918459987151e-07 seconds
4。
Single quoted did took longer in 26.57 percent of the cases
Double quoted did took longer in 73.43 percent of the cases
Single did took an average of 5.017136069985988e-07 seconds
Double did took an average of 5.004514459988143e-07 seconds
5。
Single quoted did took longer in 26.03 percent of the cases
Double quoted did took longer in 73.97 percent of the cases
Single did took an average of 5.059069689983285e-07 seconds
Double did took an average of 5.028807639983705e-07 seconds
6。
Single quoted did took longer in 25.78 percent of the cases
Double quoted did took longer in 74.22 percent of the cases
Single did took an average of 5.107472039991399e-07 seconds
Double did took an average of 5.216212339990241e-07 seconds
7。
Single quoted did took longer in 26.48 percent of the cases
Double quoted did took longer in 73.52 percent of the cases
Single did took an average of 5.082368429989468e-07 seconds
Double did took an average of 5.076817109989933e-07 seconds
8。
Single quoted did took longer in 25.97 percent of the cases
Double quoted did took longer in 74.03 percent of the cases
Single did took an average of 5.077162969990005e-07 seconds
Double did took an average of 5.108381859991112e-07 seconds
9。
Single quoted did took longer in 26.28 percent of the cases
Double quoted did took longer in 73.72 percent of the cases
Single did took an average of 5.148080479983138e-07 seconds
Double did took an average of 5.165793929982176e-07 seconds
10。
Single quoted did took longer in 25.03 percent of the cases
Double quoted did took longer in 74.97 percent of the cases
Single did took an average of 5.227828659989748e-07 seconds
Double did took an average of 5.218296609988378e-07 seconds
私がミスをしなかった場合、シングルクォートの方がほとんどの場合少し高速ですが、両方にほぼ同じ時間がかかるようです。