Question

我知道你可以做set foo to text returned of (display dialog "Dialog" default answer "default")。我尝试了set foo to number returned of或set foo to integer returned of的所有内容，但我似乎无法找到返回数字的关键字。有什么帮助吗？

Answer 1

您需要返回文本，然后将其强制转换为整数：

set foo to (text returned of (display dialog "Enter a number" default answer "42")) as integer

或者，分解更多来说明：

display dialog "Enter a number" default answer "42"
set foo to text returned of the result
set foo to foo as integer

我会把它分开，所以如果它不是一个数字，你可以围绕强制包装一个try块。

set foo to text returned of (display dialog "Enter a number" default answer "42")
try
    set foo to foo as integer
on error err
    set foo to 0
end

而且，这将是一种反复询问的方式，直到他们提供有效数字：

set msg to "Enter a number"
repeat
    set foo to text returned of (display dialog msg default answer "42")
    try
        set foo to foo as integer
        exit repeat
    on error err
        set msg to "That's not a valid number. Please enter a number."
    end try
end repeat
return foo

“将foo设为”为数字返回的文本？

1 个答案: