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<head><title>BasicList #? ZZ -- check for element in list</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="___Basic__List_sp_sh_qu_sp__Z__Z.html" title="check for element in list">BasicList #? ZZ</a></div>
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<div><h1>BasicList #? ZZ -- check for element in list</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><span>Operator: <a href="__sh_qu.html" title="check for presence of elements">#?</a></span></li>
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<div class="single"><h2>Description</h2>
<div><tt>x#?i</tt> -- tells whether there is an <tt>i</tt>-th element in the list <tt>x</tt>.<table class="examples"><tr><td><pre>i1 : {a,b,c} #? 2
o1 = true</pre>
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<tr><td><pre>i2 : {a,b,c} #? 22
o2 = false</pre>
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<div class="single"><h2>See also</h2>
<ul><li><span><a href="___Basic__List_sp_sh_sp__Z__Z.html" title="get element from list">BasicList # ZZ</a> -- get element from list</span></li>
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