字符串连接VS字符串格式 [英] String concatenation VS string format

问题描述

什么是最好的方法，简单的字符串连接或 string.format ？

What is the best approach, simple string concatenation or string.format?

例如，最好使用什么：

 s:=v1+' '+v2 

或

s:=format('%S %S',[v1,v2])

推荐答案

取决于您的最佳标准。如果你正在做的是连接两个字符串，我会用+运算符。很明显你想要做什么和易于阅读，而且它有点快一点，因为它不必使用变体。 （你看过什么格式实际上是在引擎盖子下吗？这有点吓人！）

Depends on your criteria for "best". If all you're doing is concatenating two strings, I'd go with the + operator. It's obvious what you're trying to do and easy to read, and it's a little bit faster because it doesn't have to use variants. (Have you looked at what format actually does under the hood? it's kinda scary!)

主要优点格式可以让您制作一个字符串并将其存储在某个地方，例如在文本文件或 resourcestring 中，然后再收集其他参数。这使得它对于更复杂的任务很有用。但是，如果你需要做的只是把两个字符串放在一起，那么这个有点太过分了。

The major advantage of format is that it lets you make a single string and store it somewhere, such as in a text file or a resourcestring, and gather other parameters later. This makes it useful for more complex tasks. But if all you need to do is stick two strings together, it's kinda overkill IMO.

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