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iOS Build a Simple iPhone App with Swift Creating a Data Model Finishing Up Our Model

Mir Ali
Mir Ali
3,175 Points
Posted by Mir Ali
Mir Ali
3,175 Points

Why can't we use for increment operator? for var i=0;i<factBook.factsArray.count;i+1

?

2 Answers

Enrique Munguía
Enrique Munguía
14,311 Points
Enrique Munguía
Enrique Munguía
14,311 Points

Because the expression

i + 1

results in a value of 1 if i starts at 0, but that value of 1 gets lost immediatly if it is not assigned to a variable. In order to increment i, the value must be assigned to i

i = i + 1

or its short equivalent

i++
Mir Ali
Mir Ali
3,175 Points
Mir Ali
Mir Ali
3,175 Points

says error ++ is not a binary operator

Charles Zhang
Charles Zhang
2,032 Points
Charles Zhang
Charles Zhang
2,032 Points

Because then it will not be random, it will display the facts in the order you put them in the facts array.