質問編集履歴
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現在行っているコードを追記しました
test
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@@ -39,3 +39,83 @@
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```
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```Ruby
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46
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47
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48
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open(File.expand_path("/home/rails/sample/lasttime.txt"),"w"){|f| f.write DateTime.now.strftime("%F %T") }
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50
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51
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# ↑で一度lasttime.txtに書き込み後下のrbファイルを実行
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52
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53
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54
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55
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# regularly.rb
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56
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57
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require 'date'
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60
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require 'active_support/all'
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62
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p DateTime.now.strftime('%F %T')
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p DateTime.parse(open(File.expand_path("/home/rails/sample/lasttime.txt"),&:read))
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p DateTime.now - DateTime.parse(open(File.expand_path("/home/rails/sample/lasttime.txt"),&:read))
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p DateTime.parse(open(File.expand_path("/home/rails/sample/lasttime.txt"),&:read)) - DateTime.now
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if DateTime.now - DateTime.parse(open(File.expand_path("/home/rails/sample/lasttime.txt"),&:read)) >= 1/1440r
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78
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79
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p "1分以上経った"
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80
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81
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82
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83
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else
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84
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86
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p "1分以上経ってない"
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end
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# 実行結果
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"2017-09-06 14:55:58"
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Wed, 06 Sep 2017 13:48:17 +0000
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(-28338402251309/86400000000000)
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(2833840202837/8640000000000)
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"1分以上経ってない"
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110
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111
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112
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計算値が常に0.33付近になってしまう。
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114
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115
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またotn様にご教示いただいた計算順序だとマイナスがついてしまう。
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120
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```
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