「Swift5」hasPrefixでプレフィックスを調べる
環境
Swift version 5.2.3 (swift-5.2.3-RELEASE)
Target: x86_64-unknown-linux-gnu
書式
let 変数名A = 値
変数名A.hasPrefix(文字列)
使用例
let str = "https://arkgame.com"
print(str.hasPrefix("h"))
print(str.hasPrefix("test"))
print(str.hasPrefix("http"))
print(str.hasPrefix("Http"))
print(str.uppercased().hasPrefix("Http".uppercased()))
let str = "https://arkgame.com"
print(str.hasPrefix("h"))
print(str.hasPrefix("test"))
print(str.hasPrefix("http"))
print(str.hasPrefix("Http"))
print(str.uppercased().hasPrefix("Http".uppercased()))
let str = "https://arkgame.com"
print(str.hasPrefix("h"))
print(str.hasPrefix("test"))
print(str.hasPrefix("http"))
print(str.hasPrefix("Http"))
print(str.uppercased().hasPrefix("Http".uppercased()))
実行結果
true
false
true
false
true