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<DIV><FONT face=Arial size=2>Hi to everyone,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I want to search in a list like:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1>
L=[{{1,2},3},{{1,4},3},{{2,4},8}].</FONT></DIV>
<DIV><FONT face=Arial size=2>[{{1,2},3},{{1,4},3},{{2,4},8}]</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>by the first element of the tuple that is the first
element of each tuple.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Example, I can use:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>2> lists:filter(fun(X) ->
element(1,element(1,X)) == 1 end, L).<BR>[{{1,2},3},{{1,4},3}]</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>There's a better way to perform such
search?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>something like:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>3> lists:keysearch({1,_}, 1, L).<BR>** 1:
variable '_' is unbound **</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks in advance,
Carlos.-</FONT></DIV></BODY></HTML>