Selection of sublist using Cases
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg800] Selection of sublist using Cases
- From: sands at rs1.npt.nuwc.navy.mil (Charlie Rosenthal)
- Date: Wed, 19 Apr 1995 00:51:36 -0400
Mathgroup,
I wonder if someone could explain why the following doesn't
seem to work, and hopefully, what might.
I have a list such as:
hullHL = {{12. , 34., 3, "POLY","aTop",{1.,2.,3.}},
{15. , 22., 2, "POLY","aBottom",{1.,2.,3.,4.}}
. . . . . .
. . . . . .
}
I would like to form from this list a sublist consisting of all
elements of the form {x_Real,y_Real,z_Integer,s1_String,"aTop",d_List}.
Cases[hullHL,{x_Real,y_Real,z_Integer,s_String,"aTop",d_List}]
returns {}. Why?
Charlie E. Rosenthal, sands at rs1.npt.nuwc.navl.mil