Ruby:将变量合并为字符串 [英] Ruby: Merging variables in to a string

问题描述

我正在寻找一种在 Ruby 中将变量合并为字符串的更好方法.

例如，如果字符串类似于:

animal action second_animal"

我有 animal、action 和 second_animal 的变量，将这些变量放入字符串的首选方法是什么?

解决方案

惯用的方式是这样写:

#{animal} #{action} #{second_animal}"

注意字符串周围的双引号 ("):这是 Ruby 使用其内置占位符替换的触发器.您不能用单引号 (') 替换它们，否则字符串将保持原样.

I'm looking for a better way to merge variables into a string, in Ruby.

For example if the string is something like:

"The animal action the second_animal"

And I have variables for animal, action and second_animal, what is the prefered way to put those variables in to the string?

解决方案

The idiomatic way is to write something like this:

"The #{animal} #{action} the #{second_animal}"

Note the double quotes (") surrounding the string: this is the trigger for Ruby to use its built-in placeholder substitution. You cannot replace them with single quotes (') or the string will be kept as is.

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