英文:
What do you call the := operator?
问题
我正在学习Go语言，想知道:=运算符有没有一个名称。比如x := 4。
我能想到的最好的名称是**"蜘蛛脸"**。
示例
<sub>(图片来源: buzzfed.com)</sub>
更新
我之所以问这个问题，是因为我想知道在进行配对编程时，你会如何大声读出这段代码。有人提到这个运算符的官方名称是"短变量声明运算符"，但这个名称太长了，不太适合频繁使用。
你会如何读出x := 4？到目前为止，我想到的是"ex冒号等于四"或者"ex蜘蛛脸四"？有更好的建议吗？
英文:
I was learning about Go and was wondering if there is a name for the := operator. As in x := 4.
The best I can come up with is the "spider face".
Example
<sub>(source: buzzfed.com)</sub>
Update
The reason I ask is because I'm wondering how you would read the code out loud as in during a pair programming session. It's been brought up that the official name of the operator is the "short variable declaration operator" but this is ironically too long of a name to be used frequently.
How would you read this x := 4? So far I have "ex colon equals four" or "ex spider-face four"? Are there any better ideas?
答案1
得分: 6
Go编程语言规范将涉及:=的声明称为“短变量声明”。因此，该运算符将被称为“短变量声明运算符”。
英文:
The Go Programming Language Specification calls the declarations involving := “short variable declarations.” Hence the operator would be called the “short variable declaration operator.”
答案2
得分: 4
分配？还是“被分配”。实际上，我会使用“分配”，但是我必须输入至少30个字符...
英文:
Assign? Or 'is assigned'. Actually, I'd use 'assign' but I have to type at least 30 characters...
答案3
得分: 3
“declare as”可以翻译为“声明为”。
x := 4
你可以说：“将ex声明为四”或者“ex声明为四”。
如果写成
var x = 4
也是正确的。
英文:
What about "declare as"
x := 4
You would say either: "declare ex as four" or "ex declared as four"
If that's written as
var x = 4
It's also correct
答案4
得分: 1
这只是我脑海中的一个想法，但我会称之为“实例化”。在我看来，assign不是一个好的选择，因为它会与Pascal的赋值运算符混淆。Assign也是go和大多数其他计算机语言中用于“=”的动词。
"decinit"可能作为一个简写也可以，我不知道它有其他的意思。
英文:
This is just off the top of my head, but I'd call it "instantiate". IMHO, assign is not a good choice as it confuses it with the Pascal assignment operator. Assign is also the verb used for the "=" in go and most other computer languages.
"decinit" might work as a short-hand and that has no other meaning that I know of.
答案5
得分: 0
根据 https://golang.org/ref/spec#Operators 上的规范，"运算符将操作数组合成表达式"，这绝对不是一个"运算符"。（如果你不确定什么是操作数或表达式，请确定它们不能组合。否则，始终检查规范 https://golang.org/ref/spec#Expressions）。
关于语言的这个方面，在规范 https://golang.org/ref/spec#Short_variable_declarations 中没有给出名称。
在《Effective Go》中提到的同一段落也没有给出名称，https://golang.org/doc/effective_go#redeclaration。
在搜索源代码时，我找到了它的定义。
https://cs.opensource.google/go/go/+/master:src/go/token/token.go;drc=master;l=80
我得出的结论是它是"define"标记。
英文:
According to the specification at https://golang.org/ref/spec#Operators, Operators combine operands into expressions., this is definitely not an operator. (if you are unsure what exactly is an operand or an expression, figure out it can not combine. Otherwise, always check the spec https://golang.org/ref/spec#Expressions).
The paragraph about this aspect of the language available in the specification https://golang.org/ref/spec#Short_variable_declarations does not name it.
The same paragraph available in the Effective Go does not name it either, https://golang.org/doc/effective_go#redeclaration
Searching the source, i was available to find how it is defined.
https://cs.opensource.google/go/go/+/master:src/go/token/token.go;drc=master;l=80
I came to the conclusion that it is the define token.
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