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Why RewardPledgeViewModel can initial property stripeTokenAndErrorProperty like this? #291

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blackchena opened this issue Dec 26, 2017 · 2 comments
Closed

Why RewardPledgeViewModel can initial property stripeTokenAndErrorProperty like this? #291

blackchena opened this issue Dec 26, 2017 · 2 comments

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@blackchena
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fileprivate let stripeTokenAndErrorProperty = MutableProperty(String?.none, Error?.none)

MutableProperty has not the initial method, is it means

MutableProperty((String?.none, Error?.none))
@justinswart
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Hi @blackchena, yes - it's not so clear from the syntax but it initializes the MutableProperty with a tuple type of (String?, Error?):

screen shot 2018-01-02 at 16 57 24

@blackchena
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Is this swift's syntax feature?,I have not seen it before

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@justinswart @blackchena