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<HTML><HEAD><TITLE>NSelect</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.53"><LINKREL="HOME"TITLE="Documentation Set for Swarm 2.1.1"HREF="set.html"><LINKREL="UP"TITLE="Simtools Library"HREF="swarm.simtools.sgml.reference.html"><LINKREL="PREVIOUS"TITLE="InFile [Deprecated]"HREF="swarm.simtools.infile.protocol.html"><LINKREL="NEXT"TITLE="ObjectLoader [Deprecated]"HREF="swarm.simtools.objectloader.protocol.html"></HEAD><BODYCLASS="REFENTRY"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">Documentation Set for Swarm 2.1.1</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="swarm.simtools.infile.protocol.html">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Reference VI. Simtools Library</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="swarm.simtools.objectloader.protocol.html">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="SWARM.SIMTOOLS.NSELECT.PROTOCOL">NSelect</A></H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN15892"></A><H2>Name</H2>NSelect -- A class to select exactly N elements at random from a collection.</DIV><DIVCLASS="REFSECT1"><ANAME="AEN15895"></A><H2>Description</H2><P> NSelect selects exactly N elements from a collection without repetition. A target collection must be provided.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN15898"></A><H2>Protocols adopted by NSelect</H2><P> <AHREF="swarm.objectbase.swarmobject.protocol.html">SwarmObject</A> <AHREF="swarm.defobj.creatable.protocol.html">CREATABLE</A></P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN15903"></A><H2>Methods</H2><DIVCLASS="REFSECT2"><ANAME="AEN15905"></A><H3>Phase: Using</H3><P></P><UL><LI><DIVCLASS="FUNCSYNOPSIS"><ANAME="SWARM.SIMTOOLS.NSELECT.METHOD.PU.M69"></A><P></P>+ (void)<BCLASS="FUNCPROTOTYPE">select:</B> (int)<VARCLASS="PDPARAM">n</VAR> <BCLASS="FUNCPROTOTYPE">from:</B> <VARCLASS="PDPARAM">aCollection</VAR> <BCLASS="FUNCPROTOTYPE">into:</B> <VARCLASS="PDPARAM">bCollection</VAR> <BR> The select:from:into: method selects exactly N elements from a collection without repetition into another collection. The selection algorithm is from Knuth.<P></P></DIV></LI></UL></DIV></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="swarm.simtools.infile.protocol.html">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="set.html">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="swarm.simtools.objectloader.protocol.html">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">InFile [Deprecated]</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="swarm.simtools.sgml.reference.html">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">ObjectLoader [Deprecated]</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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