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<title>Replace pipes with intermediate assignment — burst_pipes • pipecleaner</title>


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<meta property="og:title" content="Replace pipes with intermediate assignment — burst_pipes" />
<meta property="og:description" content="burst_pipes rearranges a magrittr pipeline into equivalent unpiped code.
Called directly, it will print the restructured code to the console. Called
via the &quot;Burst pipes&quot; RStudio add-in while a pipeline is highlighted, it
will replace the highlighted code with the restructured code. The &quot;Burst
pipes and set names&quot; add-in opens a Shiny gadget in which names can be set." />




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    <h1>Replace pipes with intermediate assignment</h1>
    <small class="dont-index">Source: <a href='https://github.com/alistaire47/pipecleaner/blob/master/R/debug_pipeline.R'><code>R/debug_pipeline.R</code></a></small>
    <div class="hidden name"><code>burst_pipes.Rd</code></div>
    </div>

    <div class="ref-description">
    <p><code>burst_pipes</code> rearranges a magrittr pipeline into equivalent unpiped code.
Called directly, it will print the restructured code to the console. Called
via the "Burst pipes" RStudio add-in while a pipeline is highlighted, it
will replace the highlighted code with the restructured code. The "Burst
pipes and set names" add-in opens a Shiny gadget in which names can be set.</p>
    </div>

    <pre class="usage"><span class='fu'>burst_pipes</span>(<span class='no'>pipeline</span>, <span class='no'>names</span>, <span class='no'>...</span>)</pre>

    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>pipeline</th>
      <td><p>A pipeline. Can be an unquoted or quoted expression, or a
character vector of code. If missing, uses the text highlighted in
RStudio's source editor.</p></td>
    </tr>
    <tr>
      <th>names</th>
      <td><p>A character vector of names to be used for intermediary
assignment of a length equal to that of the number of top-level calls in
the pipeline.</p></td>
    </tr>
    <tr>
      <th>...</th>
      <td><p>Only used to allow assignment with <code>=</code> at the beginning of a
pipeline.</p></td>
    </tr>
    </table>

    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>A list of expressions of the restructured, unpiped code, invisibly.</p>
    <h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>

    <p>Note that nested pipelines are currently ignored. Calling on pipelines from
the inside out should still allow restructuring.</p>
<p>Warning: Calling <code>burst_pipes</code> from the RStudio add-in is currently
irreversible aside from "Edit &gt; Undo" and version control. Save code
beforehand and check equivalence afterwards.</p>
    <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

    <div class='dont-index'><p><code><a href='split_pipeline.html'>split_pipeline</a></code> splits a pipeline without restructuring.</p></div>

    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class="examples"><div class='input'><span class='co'># \donttest{</span>
<span class='fu'><a href='https://rdrr.io/r/base/library.html'>library</a></span>(<span class='no'>magrittr</span>)

<span class='fu'>burst_pipes</span>(<span class='no'>x</span> <span class='kw'>&lt;-</span> <span class='fl'>1</span>:<span class='fl'>5</span> <span class='kw'>%&gt;%</span> <span class='no'>rev</span> <span class='kw'>%&gt;%</span> {<span class='no'>.</span> * <span class='fl'>2</span>} <span class='kw'>%&gt;%</span> <span class='no'>.</span>[<span class='fl'>3</span>] <span class='kw'>%&gt;%</span> <span class='fu'><a href='https://rdrr.io/r/stats/Normal.html'>rnorm</a></span>(<span class='fl'>1</span>, <span class='no'>.</span>, <span class='kw'>sd</span> <span class='kw'>=</span> <span class='no'>.</span>/<span class='fl'>10</span>))</div><div class='output co'>#&gt; dot1 &lt;- rev(1:5)
#&gt; dot2 &lt;- {dot1 * 2}
#&gt; dot3 &lt;- dot2[3]
#&gt; x &lt;- rnorm(1, dot3, sd = dot3/10)</div><div class='input'>
<span class='fu'>burst_pipes</span>(
    <span class='kw'>x</span> <span class='kw'>=</span> <span class='fl'>1</span>:<span class='fl'>5</span> <span class='kw'>%&gt;%</span> <span class='no'>rev</span> <span class='kw'>%&gt;%</span> {<span class='no'>.</span> * <span class='fl'>2</span>} <span class='kw'>%&gt;%</span> <span class='no'>.</span>[<span class='fl'>3</span>] <span class='kw'>%&gt;%</span> <span class='fu'><a href='https://rdrr.io/r/stats/Normal.html'>rnorm</a></span>(<span class='fl'>1</span>, <span class='no'>.</span>, <span class='kw'>sd</span> <span class='kw'>=</span> <span class='no'>.</span>/<span class='fl'>10</span>),
    <span class='kw'>names</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"reversed"</span>, <span class='st'>"doubled"</span>, <span class='st'>"third"</span>, <span class='st'>"x"</span>)
)</div><div class='output co'>#&gt; reversed &lt;- rev(1:5)
#&gt; doubled &lt;- {reversed * 2}
#&gt; third &lt;- doubled[3]
#&gt; x &lt;- rnorm(1, third, sd = third/10)</div><div class='input'># }

</div></pre>
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