- 大元も値を変更するかいなか
破壊的メソッドとは本体のデータを変更する事
- 非破壊的
string = "test code"
string.slice!(0,4)
p string
→ "test code"
- 破壊的
string = "test code"
string.slice!(0,4)
p string
→ " code"
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