ReactiveCocoaでのフロー制御の例

ReactiveCocoa 2.xを使ったサンプルアプリでのフロー制御例を紹介します。

Transcript

1. 3FBDUJWF$PDPB Ͱͷϑϩʔ੍ޚͷྫ @matuyuji ! ReactiveCocoaษڧձؔ੢ 2014.7.24
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   τʔΫϯ࠶औಘ → AFNetworking-RACExtensionsͷ rac_startJSONRequestOperationWithRequest: → concat:ͰͱΓ͚͋͑ͣͬͭ͘Δɻ map:಺ͰMantle࢖͔ͬͯΒϚʔδ → ΞΫηετʔΫϯΛnilʹͯ͠࠶࣮ߦ
7. +40/σʔλͷऔಘ (A) (B) rac_startJSONRequest…: defer defer rac_startJSONRequest…: concat: collect NSDict NSDict NSDict × 2 NSArray → AFNetworking-RACExtensionsͷ rac_startJSONRequestOperationWithRequest:
8. γάφϧͰͷΠϕϯτ next completed error id NSError
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10. +40/σʔλͷऔಘ (A) (B) rac_startJSONRequest…: defer defer rac_startJSONRequest…: concat: collect NSDict NSDict NSDict × 2 NSArray
11. +40/σʔλͷऔಘ - (RACSignal*)loadInformationSignal { RACSignal* coupon = [RACSignal defer:^RACSignal* { return [self.restHelper getCoupon]; }]; ! RACSignal* packet = [RACSignal defer:^RACSignal* { return [self.restHelper getPacket]; }]; ! RACSignal* sig = [[coupon concat:packet] collect]; return sig; } தͰrac_startJSONRequestOperationWithRequest:ΛݺͿ
12. 0"VUIͷೝূ - (RACSignal*)loadInformationSignal { RACSignal* coupon = [RACSignal defer:^RACSignal* { return [self.restHelper getCoupon]; }]; ! RACSignal* packet = [RACSignal defer:^RACSignal* { return [self.restHelper getPacket]; }]; ! RACSignal* sig = [[coupon concat:packet] collect]; return self.restHelper.accessToken ? sig : [[[self.restHelper authorize] catch:self.errorBlock] concat:sig]; } complete͔error͚ͩฦ͢γάφϧ
13. 0"VUIͷೝূ (A) (B) rac_start…: defer defer concat: collect NSDict NSDict NSDict × 2 NSArray rac_start…: concat: authorize catch: NSArray
14. MPBE*OGPSNBUJPO4JHOBM (A) (B) rac_start…: defer defer concat: collect NSDict NSDict NSDict × 2 NSArray rac_start…: concat: authorize catch: NSArray
15. MPBE*OGPSNBUJPO4JHOBM - (RACSignal*)loadInformationSignal { RACSignal* coupon = [RACSignal defer:^RACSignal* { return [self.restHelper getCoupon]; }]; ! RACSignal* packet = [RACSignal defer:^RACSignal* { return [self.restHelper getPacket]; }]; ! RACSignal* sig = [[coupon concat:packet] collect]; return self.restHelper.accessToken ? sig : [[[self.restHelper authorize] catch:self.errorBlock] concat:sig]; }
16. ϚʔδͱτʔΫϯ࠶औಘ [[[self loadInformationSignal] catch: ^RACSignal *(NSError *error) { if (/*ΞΫηετʔΫϯ͕ແޮ*/) { self.restHelper.accessToken = nil; return [self loadInformationSignal]; } return [RACSignal empty]; //ଞͷΤϥʔ͸͖͋ΒΊΔ }] map:^(NSArray* array) { // MantleͰΦϒδΣΫτ࡞੒͔ͯ͠ΒɺσʔλΛ·ͱΊΔ }];
17. τʔΫϯ࠶औಘ (A) (B) rac_start…: defer defer concat: collect NSDict NSDict NSDict × 2 NSArray rac_start…: concat: authorize catch: NSArray
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