触控笔中的变量范围

Question

触笔如何处理变量范围？

-

是否所有变量的全局？

$foo = red // is $foo global? 

2-类似于commonJS module，是否有任何exports/require等效？

$foo = @import 'foo' 

body { color: $foo } 

3-怎么样在CSS块中声明，可能与混入变量：

$foo = green 

bar() 
    $foo = yellow // is it the same $foo ? 
    $baz = blue. // local or implied global? 

ul { 

    background: $foo // green or yellow? red? 

    $foo = red 

    li { 

    $foo = pink 

    } 

    color: $foo // pink? 

    bar() // what about $foo now? 

} 

-

希望了解这方面有任何澄清或文档...

谢谢

Answer 1

如果y欧稍微改写一部分＃3你的问题：

$foo = green                 
p('global: $foo is ' $foo)             

bar()                  
    $foo = yellow                
    p('In bar(): $foo is ' $foo)            
    $baz = blue                

p('$baz outside of bar() is ' $baz)           

ul {                   

    background: $foo               
    p('In ul: $foo is ' $foo)             

    $foo = red                 
    p('In ul: now $foo is ' $foo)            

    li {                  

    $foo = pink                
    p('In ul li: $foo is ' $foo)            

    }                   

    color: $foo // pink?              
    p('Back in ul: now $foo is ' $foo)           

    bar()                  
    p('what about $foo now? ' $foo)           
} 

然后笔会回答你：

$ stylus test.styl 
inspect: 'global: $foo is ' (#008000) 
inspect: '$baz outside of bar() is ' $baz 
inspect: 'In ul: $foo is ' (#008000) 
inspect: 'In ul: now $foo is ' (#f00) 
inspect: 'In ul li: $foo is ' (#ffc0cb) 
inspect: 'Back in ul: now $foo is ' (#f00) 
inspect: 'In bar(): $foo is ' (#ff0) 
inspect: 'what about $foo now? ' (#f00) 
    compiled test.css