Created
June 15, 2017 21:28
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| precedencegroup OptionalAssignmentPrecedence { | |
| associativity: right | |
| lowerThan: AssignmentPrecedence | |
| } | |
| infix operator ?= : OptionalAssignmentPrecedence | |
| public func ?=<T>(optional: inout T?, defaultValue: @autoclosure () -> T?) { | |
| if optional == nil { | |
| optional = defaultValue() | |
| } | |
| } |
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