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Kotlin ͬͯ ͳ͊ʹʁ ΢ϛʔϕגࣜձࣾ "OESPJEΞϓϦΤϯδχΞ ͋Μͳ-W !SN@@SG

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"OESPJE+BWBͰ͸ JavaΑΓ͍͍ײ͡ͷݴޠ͕͋ΔΒ͍͠Αɾɾɾ

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/VMM҆શ هड़͕؆ܿ ,PUMJO +BWB Ϋϥογϡࡇ هड़͕৑௕

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,PUMJO +BWB String hoge = null; hoge.toInt(); ←Ϋϥογϡ͢Δ String hoge = null; if(hoge == null){ return; } else { hoge.toInt(); } val hoge: String? = null ←OK! val hoge: String = null ←ίϯύΠϧΤϥʔ var hoge = null hoge?.toInt() ?: return ௕͍ʂ͵ΔΆා͍ʂ ҆৺ʂ҆શʂ؆୯ʂ Null҆શ ؆ܿͳهड़ Ϋϥογϡࡇ ৑௕ͳهड़

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Android͚ͩͩͱࢥͬͨʁ ,PUMJOͰॻ͜͏żʙ J04ʂ 8FCΞϓϦʂ αʔόʔʂ ΋ॻ͚Δɾɾ͔΋ɾɾɾʁ