回答編集履歴
2
修正
test
CHANGED
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@@ -112,7 +112,7 @@
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112
112
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113
113
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114
114
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115
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-
diffs.each do |diff|
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115
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+
diffs.flatten.each do |diff|
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116
116
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117
117
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checkonlynewdiff << diff.element if diff.adding?
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118
118
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1
追記
test
CHANGED
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@@ -124,4 +124,12 @@
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124
124
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125
125
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#=> ["kdo,223,2018/1/8", "shi,224,2018/1/9", "skd,225,2018/1/10"]
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126
126
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127
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+
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128
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+
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129
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+
#ちなみに最後の部分は一発で取ることもできる
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130
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+
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131
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+
diffs.flatten.select(&:adding?).map(&:element)
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132
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+
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133
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+
#=> ["kdo,223,2018/1/8", "shi,224,2018/1/9", "skd,225,2018/1/10"]
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134
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+
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127
135
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```
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