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DI-antiPattern.pdf
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shindyu
December 20, 2018
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DI-antiPattern.pdf
shindyu
December 20, 2018
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Transcript
DEPENDENCY INJECTION ANTI-PATTERNS @SHINDYU
DEPENDENCY INJECTION ANTI-PATTERNS SELF-INTRODUCTION ▸ ৽ಊ ܟོ / @shindyu ▸
ϠϑΦΫ! iOS ▸ ٕज़ॻయ̑ͰςετຊΛॻ͖·ͨ͠ʂ https://booth.pm/ja/items/1040471
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION ▸ ґଘੑͷೖ ʰ͋ΔΦϒδΣΫτʹରͯ͠ґଘؔͷ͋ΔผͷΦϒδΣΫ τΛ֎෦͔Β͢͜ͱʱ ▸
ͷ ▸ ςετ͍͢͠
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION PATTERNS ▸ Constructor Injection ▸
Property Injection ▸ Method Injection ▸ Ambient Context
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION PATTERNS ▸ Constructor Injection ▸
Property Injection ▸ Method Injection ▸ Ambient Context
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION PATTERNS ▸ Constructor Injection ▸
Property Injection ▸ Method Injection ▸ Ambient Context
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION PATTERNS ▸ Constructor Injection ▸
Property Injection ▸ Method Injection ▸ Ambient Context
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION PATTERNS ▸ Constructor Injection ▸
Property Injection ▸ Method Injection ▸ Ambient Context
DEPENDENCY INJECTION ANTI-PATTERNS DEPENDENCY INJECTION PATTERNS ▸ Constructor Injection ▸
Property Injection ▸ Method Injection ▸ Ambient Context
DEPENDENCY INJECTION ANTI-PATTERNS ANTI-PATTERNS ▸ Control Freak ▸ Bastard Injection
▸ Service Locator
DEPENDENCY INJECTION ANTI-PATTERNS CONTROL FREAK ▸ DI͞Ε͍ͯͳ͍ঢ়ଶ ▸ StableͱVolatileΛݟۃΊͯDIύλʔϯΛ͏
DEPENDENCY INJECTION ANTI-PATTERNS STABLE / VOLATILE ▸ Stable Dependency :
҆ఆͨ͠ґଘؔ ▸ ex) ෦ͰͷΈར༻͢ΔϞδϡʔϧ ▸ Volatile Dependency : شൃੑͷ͋Δґଘؔ ▸ ex) ཚɺ࣌ؒΛར༻͢ΔϞδϡʔϧɺ ɹ ฒߦ։ൃதͰFIX͍ͯ͠ͳ͍ґଘؔ
DEPENDENCY INJECTION ANTI-PATTERNS BASTARD INJECTION ▸ ConstructorͷύϥϝʔλʹσϑΥϧτͱͯ͠ ֎෦ϞδϡʔϧΛࢦఆͯ͠͠·ͬͨঢ়ଶ
DEPENDENCY INJECTION ANTI-PATTERNS BASTARD INJECTION
DEPENDENCY INJECTION ANTI-PATTERNS BASTARD INJECTION
DEPENDENCY INJECTION ANTI-PATTERNS BASTARD INJECTION ▸ ςετॻ͖͍͢ ▸ ͕ɺ݁ہ֎෦Ϟδϡʔϧͷ࣮ʹґଘ͍ͯ͠ΔͷͰμϝ
DEPENDENCY INJECTION ANTI-PATTERNS BASTARD INJECTION ▸ ͜Ε͓ͦΒ͘Bastard InjectionͰͳ͍͕ ґଘ͕ؔΦϓγϣφϧͳΒMethod InjectionͰྑ͍
DEPENDENCY INJECTION ANTI-PATTERNS SERVICE LOCATOR
DEPENDENCY INJECTION ANTI-PATTERNS SERVICE LOCATOR
DEPENDENCY INJECTION ANTI-PATTERNS SERVICE LOCATOR ▸ ґଘؔΛ҉తʹӅ͍ͯ͠Δ ▸ ServiceLocatorͷґଘ͕ൃੜ͍ͯ͠Δ ▸
ServiceLocatorܦ༝Ͱ࡞ΒΕͨͷ͔֬ೝ͢Δඞཁ͕͋Δ
DEPENDENCY INJECTION ANTI-PATTERNS SUMMARY ▸ Dependency Injection ▸ Constructor Injection
▸ Property Injection ▸ Method Injection ▸ Ambient Context ▸ Anti-Patterns ▸ Control Freak ▸ Bastard Injection ▸ Service Locator ͍ͨͩ͠ύλʔϯΛཧղͯ͠ΑΓྑ͍ίʔυΛʂ
DEPENDENCY INJECTION ANTI-PATTERNS REFERENCES ▸ http://ilya.puchka.me/dependency-injection-in-swift/ ▸ https://www.future-processing.pl/blog/introduction-to- dependency-injection/