dongqie8661 2019-04-06 02:09
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我想为多个变量If条件简写添加值

I want to add value to multiple variable If condition shorthand but I don't know how to use symbol split between 2 variable

eg. manuscript

if(condition) {
    $var1 = "a";
    $var2 = "b";
} else {
    $var1 = "";
    $var2 = "";
}

Shorthand [error]

(condition) ? $var1 = "a", $var2 = "b"
: $var1 = "", $var2 = "";
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1条回答 默认 最新

  • dpw70180 2019-04-06 02:15
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    Don't do it. The if statement is fine. It's simple and clear. Try to cram multiple assignments into the ?: ternary operator, next thing you know you're hacking Perl scripts for spare change in some back alley.

    I would write exactly what you have:

    if (condition) {
        $var1 = "a";
        $var2 = "b";
    } else {
        $var1 = "";
        $var2 = "";
    }
    

    You could potentially write it like this, if you prefer. This is a good choice if you first assign default values and the if condition assigns less common values.

    $var1 = "";
    $var2 = "";
    
    if (condition) {
        $var1 = "a";
        $var2 = "b";
    }
    

    If you really want to use the ternary operator you could write this, if you're okay writing condition twice:

    $var1 = condition ? "a" : "";
    $var2 = condition ? "b" : "";
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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