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<?xml version="1.0" encoding="UTF-8" ?>DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd " >html xmlns="http://www.w3.org/1999/xhtml " xml:lang="en" >head >title >GAP (Utils) - Chapter 2: Printing Lists and Iterators</title >meta http-equiv="content-type" content="text/html; charset=UTF-8" />meta name="generator" content="GAPDoc2HTML" />link rel="stylesheet" type="text/css" href="manual.css" />script src="manual.js" type="text/javascript" ></script >script type="text/javascript" >overwriteStyle();</script >head >body class="chap2" onload="jscontent()" >div class="chlinktop" ><span class="chlink1" >Goto Chapter: </span ><a href="chap0.html" >Top</a> <a href="chap1.html" >1</a> <a href="chap2.html" >2</a> <a href="chap3.html" >3</a> <a href="chap4.html" >4</a> <a href="chap5.html" >5</a> <a href="chap6.html" >6</a> <a href="chap7.html" >7</a> <a href="chap8.html" >8</a> <a href="chap9.html" >9</a> <a href="chap10.html" >10</a> <a href="chap11.html" >11</a> <a href="chap12.html" >12</a> <a href="chapBib.html" >Bib</a> <a href="chapInd.html" >Ind</a> </div >div class="chlinkprevnexttop" > <a href="chap0.html" >[Top of Book]</a> <a href="chap0.html#contents" >[Contents]</a> <a href="chap1.html" >[Previous Chapter]</a> <a href="chap3.html" >[Next Chapter]</a> </div >"mathjaxlink" class="pcenter" ><a href="chap2_mj.html" >[MathJax on]</a></p>"X83686EE47E4D4F66" name="X83686EE47E4D4F66" ></a></p>div class="ChapSects" ><a href="chap2.html#X83686EE47E4D4F66" >2 <span class="Heading" >Printing Lists and Iterators</span ></a>div class="ContSect" ><span class="tocline" ><span class="nocss" > </span ><a href="chap2.html#X7F6817927F86240F" >2.1 <span class="Heading" >Printing selected items</span ></a>span >div class="ContSSBlock" >span class="ContSS" ><br /><span class="nocss" > </span ><a href="chap2.html#X784638AC84D49870" >2.1-1 PrintSelection</a></span >div ></div >div >span class="Heading" >Printing Lists and Iterators</span ></h3>"X7F6817927F86240F" name="X7F6817927F86240F" ></a></p>span class="Heading" >Printing selected items</span ></h4>ther the whole list/iterator or certain subsets:</p>ul >li ><p>by giving a list of positions of items to be printed, or</p>li >li ><p>by specifying a first item and then a regular step.</p>li >ul >"X784638AC84D49870" name="X784638AC84D49870" ></a></p>div class="func" ><table class="func" width="100%" ><tr ><td class="tdleft" ><code class="func" >‣ PrintSelection</code >( <var class="Arg" >obj</var >, <var class="Arg" >list</var > )</td ><td class="tdright" >( function )</td ></tr ></table ></div >div class="func" ><table class="func" width="100%" ><tr ><td class="tdleft" ><code class="func" >‣ PrintSelection</code >( <var class="Arg" >obj</var >, <var class="Arg" >first</var >, <var class="Arg" >step</var >[, <var class="Arg" >last</var >] )</td ><td class="tdright" >( function )</td ></tr ></table ></div >code class="code" >PrintSelectionFromList</code > or <code class="code" >PrintSelectionFromIterator</code > which prints the <em >first</em > item specified, and then the item at every <em >step</em >. The fourth parameter is essential when the object being printed is infinite.</p>code class="code" >L</code > of positive integers, only the items at positions in <code class="code" >L</code > are printed.</p>div class="example" ><pre >span class="GAPprompt" >gap></span > <span class="GAPinput" >L := List( [1..20], n -> n^5 );;</span >span class="GAPprompt" >gap></span > <span class="GAPinput" >PrintSelection( L, [18..20] );</span >span class="GAPprompt" >gap></span > <span class="GAPinput" >PrintSelection( L, 2, 9 ); </span >span class="GAPprompt" >gap></span > <span class="GAPinput" >PrintSelection( L, 2, 3, 11 );</span >span class="GAPprompt" >gap></span > <span class="GAPinput" >s5 := SymmetricGroup( 5 );;</span >span class="GAPprompt" >gap></span > <span class="GAPinput" >PrintSelection( s5, [30,31,100,101] );</span >span class="GAPprompt" >gap></span > <span class="GAPinput" >PrintSelection( s5, 1, 30 );</span >span class="GAPprompt" >gap></span > <span class="GAPinput" >PrintSelection( s5, 9, 11, 43 );</span >pre ></div >div class="chlinkprevnextbot" > <a href="chap0.html" >[Top of Book]</a> <a href="chap0.html#contents" >[Contents]</a> <a href="chap1.html" >[Previous Chapter]</a> <a href="chap3.html" >[Next Chapter]</a> </div >div class="chlinkbot" ><span class="chlink1" >Goto Chapter: </span ><a href="chap0.html" >Top</a> <a href="chap1.html" >1</a> <a href="chap2.html" >2</a> <a href="chap3.html" >3</a> <a href="chap4.html" >4</a> <a href="chap5.html" >5</a> <a href="chap6.html" >6</a> <a href="chap7.html" >7</a> <a href="chap8.html" >8</a> <a href="chap9.html" >9</a> <a href="chap10.html" >10</a> <a href="chap11.html" >11</a> <a href="chap12.html" >12</a> <a href="chapBib.html" >Bib</a> <a href="chapInd.html" >Ind</a> </div >hr />"foot" >generated by <a href="https://www.math.rwth-aachen.de/~Frank.Luebeck/GAPDoc " >GAPDoc2HTML</a></p>body >html >quality 98%
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