标签：学习 多行 alt start lang 常用方法 his art gen
使用 单引号，双引号 创建字符串
使用 三个引号或双引号 创建多行字符串
使用 r 创建原始 raw 字符串
String str1 = ‘Hello‘;//"" String str2 = ‘‘‘Hello Dart‘‘‘;//""" print(str1); print(str2); // String str3 = ‘Hello \n Dart‘; String str3 = r‘Hello \n Dart‘; print(str3);
输出
Hello
Hello
Dart
Hello \n Dart
其他常用方法如下：
String str4 = "This is my favorite language"; print(str4 + "New"); print(str4 * 5); print(str3 == str4); print(str4[1]); int a = 1; int b = 2; print("a + b = ${a + b}"); print("a = $a"); print(str4.length); print(str4.isEmpty); print(str4.contains("This")); print(str4.substring(0,3)); print(str4.startsWith("a")); print(str4.endsWith("ge")); var list = str4.split(" "); print(list); print(str4.replaceAll("This", "That"));
输出：
This is my favorite languageNew This is my favorite languageThis is my favorite languageThis is my favorite languageThis is my favorite languageThis is my favorite language false h a + b = 3 a = 1 28 false true Thi false true [This, is, my, favorite, language] That is my favorite language
标签：学习 多行 alt start lang 常用方法 his art gen
原文地址：https://www.cnblogs.com/jukaiit/p/12235055.html
