Rust 格式输出
格式输出由一系列定义在 std::fmt 中的宏提供。
包含:
format! : 输出格式化的字符串。
print!  : 输出格式化的字符串到控制台(终端)
println!: 添加一个换行,输出格式化的字符串到控制台(终端)
 
println!("Guess the number!");
 输出:Guess the number!
 
println!("{} days", 31);
 输出:31 days
 
println!("{0}, this is {1}. {1}, this is {0}", "Alice", "Bob");
 输出:Alice, this is Bob. Bob, this is Alice
 
println!("{subject} {verb} {object}",
             object="the lazy dog",
             subject="the quick brown fox",
             verb="jumps over");
 输出:the quick brown fox jumps over the lazy dog
 
println!("{} of {:b} people know binary, the other half don't", 1, 2);
 输出:1 of 10 people know binary, the other half don't
 
println!("{number:>width$}", number=1, width=6);
 输出:“ 1” // 引號是为了显示数字1的前面有五个空白字符而加上的,实际没有。
 
println!("{number:>0width$}", number=1, width=6);
 输出:000001
 
println!("My name is {0}, {1} {0}.”, "Bond","James");
 输出:
My name is Bond, James Bond
很多其它语法:http://doc.rust-lang.org/std/fmt/
 
                    
                     
                    
                 
                    
                 
                
            
         
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浙公网安备 33010602011771号