ruby-on-rails - rails : Tilde usage in HAML

Question

我只是在 HAML/Rails 形式中偶然发现了这一行:

~ f.input :content, label: false

波浪号有什么作用？

Answer 1

Whitespace Preservation: ~ :

~ works just like =, except that it runs Haml::Helpers#find_and_preserve on its input. For example,

~ "Foo\n<pre>Bar\nBaz</pre>"

is the same as:

= find_and_preserve("Foo\n<pre>Bar\nBaz</pre>")

and is compiled to:

Foo <pre>Bar&#x000A;Baz</pre>