I encountered a new problem which is I want to get &quot; 1 &quot; from a triple &quot;(0,2,[1,2,3])&quot;, which means I want to get the first value of the third item in one triple and itself is a list, but when I use the List.hd (third(0,2,[1,2,3])), it will give me the entire list which is [1,2,3]<br>
the definition of the third is &quot;let third(x,y,z)=z&quot;, so is there a way I can get out &quot;1&quot; from &quot;(0,2,[1,2,3])&quot;? if possible, would you please give me some advices?<br>&nbsp;<br>thank you very much<br clear="all">
<br>-- <br>Su Zhang<br>