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4XJGU,PUMJOѪ޷ձ 7PM !(.0ϖύϘ

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4XJGUͱ,PUMJO

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4XJGUͱ,PUMJO

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+BWBͱ0CKFDUJWF$ ͷ࿩Λ͠·͢

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ͳΜͰࠓ͞Β+BWB0CK$

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ͳΜͰࠓ͞Β+BWB0CK$ w ࠓͷ࣌୅ΞϓϦ͸4XJGU,PUMJOͰॻ͘ͷ͕౰ͨΓલ w ࠓͲ͖+BWB0CK$ͳΜͯ৮ΒΜ΍Ζ

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Ռͨͯ͠ຊ౰ʹͦ͏ͩΖ͏͔ʁ

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Ռͨͯ͠ຊ౰ʹͦ͏ͩΖ͏͔ʁ w 044ϥΠϒϥϦ͸ϦϦʔε͞Εͨ࣌୅΍ϥΠϒϥϦͷಛ ੑ্+BWB0CK$Ͱॻ͔Ε͍ͯΔ΋ͷ΋·ͩ·ͩଟ͍ w ࣮૷Λ֬ೝͨ͠Γ13Λग़ͨ͠Γ͢ΔͳΒ΍ͬͺΓͦͷล ͷ஌ࣝ͸ඞཁ

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ͱ͍͏͜ͱͰ

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ҙ֎ͱҾ͔͔ͬΔʂʁ ݴޠ࢓༷ΫΠζ +BWB0CKFDUJWF$ฤ

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w 5BLVIJSP.VUBBLB௣໊Նر ,* w 4&೥ 8FC J04 "OESPJE ৽ਓݚमߨࢣFUD 
 J04 डୗ։ൃ ೥൒
 J04 ࣗࣾ։ൃ ࠓίί w 5XJUUFS 2JJUB@LJ
 (JU)VC,* w 4XJGUѪ޷ձࢀՃप೥
 ΋͏΍ΜΧϨʔ͸೥໨ ͓લ୭Α

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#VJME$POpHTXJGU ελʔ͍ͩ͘͞

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ݴޠ࢓༷ΫΠζ w +BWB໰ w 0CKFDUJWF$໰

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+BWBฤ

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ୈ໰

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ public class Sample { public static void main(String... args) { while (false) { System.out.println("hoge"); } } }

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ public class Sample { public static void main(String... args) { while (false) { System.out.println("hoge"); } } } lIPHFz͕ճ͚ͩग़ྗ͞ΕΔ Կ΋ى͖ͳ͍ ίϯύΠϧΤϥʔ ࣮ߦ࣌Τϥʔ

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ public class Sample { public static void main(String... args) { while (false) { System.out.println("hoge"); } } } lIPHFz͕ճ͚ͩग़ྗ͞ΕΔ Կ΋ى͖ͳ͍ ίϯύΠϧΤϥʔ ࣮ߦ࣌Τϥʔ

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ղઆ public class Sample { public static void main(String... args) { while (false) { System.out.println("hoge"); } } } 6OSFBDIBCMFDPEF

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ୈ໰

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ୈ໰Λ౿·͑ͯ public class Sample { public static void main(String... args) { while (false) { System.out.println("hoge"); } } }

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ public class Sample { public static void main(String... args) { do { System.out.println("hoge"); } while (false); } }

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ public class Sample { public static void main(String... args) { do { System.out.println("hoge"); } while (false); } } lIPHFz͕ճ͚ͩग़ྗ͞ΕΔ Կ΋ى͖ͳ͍ ίϯύΠϧΤϥʔ ࣮ߦ࣌Τϥʔ

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࣍ͷίʔυͷಈ͖͸Ͳ͏ͳΔʁ public class Sample { public static void main(String... args) { do { System.out.println("hoge"); } while (false); } } lIPHFz͕ճ͚ͩग़ྗ͞ΕΔ Կ΋ى͖ͳ͍ ίϯύΠϧΤϥʔ ࣮ߦ࣌Τϥʔ

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public class Sample { public static void main(String... args) { do { System.out.println("hoge"); } while (false); } } ղઆ EPXIJMF͸ࣄޙධՁ ճॲཧͨ͠ޙʹ৚݅ࣜΛ൑ఆ

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ղઆ ॲཧ ৚ ݅ XIJMF ॲཧ ৚ ݅ EPXIJMF

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0CKFDUJWF$ฤ

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ୈ໰

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Կ͕ग़ྗ͞ΕΔʁ

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Կ͕ग़ྗ͞ΕΔʁ if (@0) { NSLog(@"true"); } else { NSLog(@"false"); }

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Կ͕ग़ྗ͞ΕΔʁ if (@0) { NSLog(@"true"); } else { NSLog(@"false"); } USVF GBMTF

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Կ͕ग़ྗ͞ΕΔʁ if (@0) { NSLog(@"true"); } else { NSLog(@"false"); } USVF GBMTF

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ղઆ w @0͸4/VNCFSOVNCFS8JUI*OU>ͷ4ZOUBY4VHBS w /4/VNCFS͸ΦϒδΣΫτ w ΦϒδΣΫτͱͯ͠͸ଘࡏ͢ΔͨΊɺ
 USVFͱͯ͠൑ఆ͞ΕΔ w @NO΋ಉ༷

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ୈ໰

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Կ͕ग़ྗ͞ΕΔʁ

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Կ͕ग़ྗ͞ΕΔʁ [ "hoge", "fuga", null, "foo", "bar" ] TBNQMFKTPO NSArray *array = ... // JSONΛಡΈࠐΉॲཧ if (array[2]) { NSLog(@"true"); } else { NSLog(@"false"); }

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Կ͕ग़ྗ͞ΕΔʁ USVF GBMTF [ "hoge", "fuga", null, "foo", "bar" ] TBNQMFKTPO NSArray *array = ... // JSONΛಡΈࠐΉॲཧ if (array[2]) { NSLog(@"true"); } else { NSLog(@"false"); }

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Կ͕ग़ྗ͞ΕΔʁ USVF GBMTF [ "hoge", "fuga", null, "foo", "bar" ] TBNQMFKTPO NSArray *array = ... // JSONΛಡΈࠐΉॲཧ if (array[2]) { NSLog(@"true"); } else { NSLog(@"false"); }

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ղઆ w /4"SSBZ౳ͷίϨΫγϣϯʹ͸OJMΛೖΕΔ͜ͱ͕Ͱ͖ͳ ͍ w େମखஈͱͯ͠/4/VMMͱ͍͏ΫϥεΛ࢖͏ w ͜ͷ࣌BSSBZ<>͔ΒऔΓग़͞ΕΔͷ͸4/VMMOVMM>ͱ͍͏ γϯάϧτϯΦϒδΣΫτ w ΦϒδΣΫτͳͷͰUSVFͱͯ͠൑ఆ͞ΕΔ

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/4/VMMͱOJM NSLog(@"%@", nil); // -> (null) NSLog(@"%@", [NSNull null]); // -> ഑ྻʹฆΕ͍ͯΔOVMM͸Α͘ݟམͱ͕ͪ͠

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͜ΜͳΜ஌ͬͯͯԿʹͳΔʁ

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͜ΜͳΜ஌ͬͯͯԿʹͳΔʁ w +BWB w 0$+1 0SBDMFೝఆࢿ֨ Ͱ͜͏͍͏໰୊͕ग़୊͞ΕΔ w ࣮຿Ͱ࢖͏ҙຯ͸໓ଟʹແ͍͕ɺ
 ϨΨγʔͳγεςϜͰۃكʹฆΕࠐΜͰΔ w Ϧʔμϒϧίʔυͬͯ஌ͬͯΔʁ

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͜ΜͳΜ஌ͬͯͯԿʹͳΔʁ w 0CK$ w ҙ֎ͱݟམͱ͕ͪ͠ w ͜ͷखͷޡղ͔ΒੜͣΔόά͕࣮ࡍʹ͋ͬͨ w 4XJGU΁ͷϦϓϨʔεͰ૝ఆͱҧ͏ಈ͖Λ͢Δͱ͔ w ಛʹ഑ྻʹฆΕࠐΉOVMM໰୊͸͋Δ͋Δ

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͜ΜͳΜ஌ͬͯͯԿʹͳΔʁ w ͍ͭͰʹ w ৽ਓݚमͰυϠΕΔ

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·ͱΊ w ϨΨγʔݴޠͷཧղ͸ϦϓϨʔεͷڧ͍ຯํ w ࢥΘ͵όάΛੜ·ͳ͍ͨΊʹ΋ݴޠ࢓༷ͷཧղ͸େ੾ w ࣮຿Ͱ࢖Θͳ͍஌͔ࣝͩΒͬͯܰࢹ͠ͳ͍Α͏ʹ

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ྑ͍͓೥Λʂ✋