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    <p>First, let's get a function out of the <code>replaceAll</code> method:</p> <pre><code>scala&gt; val replace = (from: String, to: String) =&gt; (_:String).replaceAll(from, to) replace: (String, String) =&gt; String =&gt; java.lang.String = &lt;function2&gt; </code></pre> <p>Now you can use <code>Functor</code> instance for function, <a href="https://github.com/scalaz/scalaz/blob/master/core/src/main/scala/scalaz/Functor.scala#L88">defined</a> in scalaz. That way you can compose functions, using <code>map</code> (or to make it look better, using unicode aliases).</p> <p>It will look like this:</p> <pre><code>scala&gt; replace("from", "to") ∘ replace("to", "from") ∘ replace("some", "none") res0: String =&gt; java.lang.String = &lt;function1&gt; </code></pre> <p>If you prefer haskell-way compose (right to left), use <code>contramap</code>:</p> <pre><code>scala&gt; replace("some", "none") ∙ replace("to", "from") ∙ replace ("from", "to") res2: String =&gt; java.lang.String = &lt;function1&gt; </code></pre> <p>You can also have some fun with <code>Category</code> <a href="https://github.com/scalaz/scalaz/blob/master/core/src/main/scala/scalaz/Category.scala#L97">instance</a>:</p> <pre><code>scala&gt; replace("from", "to") ⋙ replace("to", "from") ⋙ replace("some", "none") res5: String =&gt; java.lang.String = &lt;function1&gt; scala&gt; replace("some", "none") ⋘ replace("to", "from") ⋘ replace ("from", "to") res7: String =&gt; java.lang.String = &lt;function1&gt; </code></pre> <p>And applying it:</p> <pre><code>scala&gt; "somestringfromto" |&gt; res0 res3: java.lang.String = nonestringfromfrom scala&gt; res2("somestringfromto") res4: java.lang.String = nonestringfromfrom scala&gt; "somestringfromto" |&gt; res5 res6: java.lang.String = nonestringfromfrom scala&gt; res7("somestringfromto") res8: java.lang.String = nonestringfromfrom </code></pre>
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    1. POApply several string transformations in scala
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    1. POApply several string transformations in scala
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    1. COBull's eye ! Great and complete answer using Scalaz.
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      1. USM'λ'
    2. CO@M'λ', if you don't want to pull in Scalaz dependency, you can use `andThen` instead of `∘` and `compose` instead of `∙`, which are both part of standard library.
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    3. COIt blows my mind that people find ∘ and ∙ readable. Much prefer andThen and compose, I can understand the code without having to look up those symbols (not to mention how difficult it is to look symbols up through google)
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      1. USMike McFarland
 

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