Ruby 中的字符串插值不起作用? [英] String interpolation in Ruby doesn't work?

问题描述

最近我从 Ruby 1.9.3 转向了 Ruby 2.0.0.

Recently I shifted to Ruby 2.0.0 from Ruby 1.9.3.

在 1.9.3 中，我们习惯于使用:'http://#{get_host_name}.com 来执行字符串插值，但是自从移动到 2.0.0，它似乎不起作用.

In 1.9.3 we were used to perform string interpolation using: 'http://#{get_host_name}.com, but since moving to 2.0.0, it seems to be not working.

谁能告诉我语法是否改变了?如何在 Ruby 2.0.0 中执行字符串插值?

Can anyone tell me if the syntax changed? How can I perform string interpolation in Ruby 2.0.0?

推荐答案

无论您使用的是哪个版本的 Ruby，单引号字符串中都不会发生字符串插值.使用双引号字符串或 %Q 样式的字符串.

Regardless of which version of Ruby you're using, string interpolation doesn't happen in single-quoted strings. Use double-quoted strings or %Q-style strings.

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