c# - 请为我破译这个 C# 表达式

Question

这是什么意思？？

var cdParams = (includeUniversals) 
? new[] {pageDictionary[pageName], pageDictionary[CNNService.UniversalPage.Name]}
: new[] {pageDictionary[pageName]};

基本上它归结为什么？ new[] 是什么意思？

Answer 1

大致相当于:

Foo[] cdParams;  // Use the correct type instead of Foo. NB: var won't work here.
if (includeUniversals) { 
    dParams = new Foo[2];
    dParams[0] = pageDictionary[pageName];
    dParams[1] = pageDictionary[CNNService.UniversalPage.Name];
} else {
    dParams = new Foo[1];
    dParams[0] = pageDictionary[pageName];
}