48 lines
1.4 KiB
Swift
48 lines
1.4 KiB
Swift
//
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// StringExtension.swift
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// SodaLive
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//
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// Created by klaus on 2022/06/03.
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//
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import Foundation
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extension Optional where Wrapped == String {
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func isNullOrBlank() -> Bool {
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return self == nil || self!.trimmingCharacters(in: .whitespaces).isEmpty
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}
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}
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extension String {
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func convertDateFormat(from: String, to: String, locale: Locale? = nil) -> String {
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let fromFormatter = DateFormatter()
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fromFormatter.dateFormat = from
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fromFormatter.timeZone = TimeZone(identifier: TimeZone.current.identifier)
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if let locale = locale {
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fromFormatter.locale = locale
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}
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if let date = fromFormatter.date(from: self) {
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return date.convertDateFormat(dateFormat: to)
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} else {
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return self
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}
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}
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func substring(from: Int, to: Int) -> String {
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guard from < count, to >= 0, to - from >= 0 else {
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return ""
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}
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// Index 값 획득
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let startIndex = index(self.startIndex, offsetBy: from)
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let endIndex = index(self.startIndex, offsetBy: to + 1) // '+1'이 있는 이유: endIndex는 문자열의 마지막 그 다음을 가리키기 때문
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// 파싱
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return String(self[startIndex ..< endIndex])
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// 출처 - https://ios-development.tistory.com/379
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}
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}
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