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<head><title>flatten -- flatten a list by unnesting lists</title>
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<div><a href="index.html" title="">Macaulay2Doc</a> > <a href="___The_sp__Macaulay2_splanguage.html" title="">The Macaulay2 language</a> > <a href="_lists_spand_spsequences.html" title="">lists and sequences</a> > <a href="_flatten.html" title="flatten a list by unnesting lists">flatten</a></div>
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<div><h1>flatten -- flatten a list by unnesting lists</h1>
<div class="single"><h2>Description</h2>
<div><tt>flatten m</tt> -- produces a new list from <tt>m</tt> by effectively removing the braces surrounding the elements of any elements of <tt>m</tt> that happen to be lists. Also works for matrices.<p/>
<table class="examples"><tr><td><pre>i1 : flatten {{2,3,4},{{5}},6}
o1 = {2, 3, 4, {5}, 6}
o1 : List</pre>
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<div class="waystouse"><h2>Ways to use <tt>flatten</tt> :</h2>
<ul><li>flatten(VisibleList)</li>
<li><span><a href="_flatten_lp__Matrix_rp.html" title="puts the columns of a matrix into a single row">flatten(Matrix)</a> -- puts the columns of a matrix into a single row</span></li>
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