LabRAC

Exploratory ReactiveCocoa signal operations. They've been used in an app, and do have tests, but judge for yourself.

Operations

• -lab_replayLastWhen:
• -lab_combineLatest
• -lab_doFirst:
• -lab_doLast:
• -lab_willSubscribe:
• -lab_didSubscribe:

-lab_replayLastWhen:(RACSignal *)cue

Returns a signal that passes through all values, while also resending the last value on cue. Used to retrigger the last value on some event, such as the app returning to the foreground.

-lab_combineLatest

Similar to +combineLatest:, except instead of combining the latest values from a fixed collection of signals, this operation applies to a signal of signals, combining the lastest values from each signal. For each signal sent, the size of the "combination" increases by one. Unlike, +combineLatest:, the resulting signal sends values of NSArray, not RACTuple.

-lab_doFirst:(void (^)(id x))block

-lab_doLast:(void (^)(id x))block

Similar to -initially: and -finally:, except the side effects represented by these operators will only happen if the signal sends values.

-lab_willSubscribe:(void (^)(void))block

-lab_didSubscribe:(void (^)(void))block

Returns a signal that performs subscription side effects. While -lab_willSubscribe: is identical to -initially: and exists just for symmetry, -lab_didSubscribe: allows a signal composition to include post-subscription side effects.