15 lines
456 B
Swift
15 lines
456 B
Swift
import Foundation
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public extension NSMutableAttributedString {
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func addMissingAttributes(_ attributes: [Key: Any]) {
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let range = NSRange(location: 0, length: string.utf16.count)
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for (key, newValue) in attributes {
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enumerateAttribute(key, in: range) { value, range, _ in
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if value == nil {
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addAttribute(key, value: newValue, range: range)
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}
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}
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}
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}
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}
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