| Original Message (ID '78201') By Bill Simpson: |
| If list={first,second...} then Map[f,list] will create {f[first],f[second]...} for all the items in list.
So
In[1]:= data={{x,y},{c,v}};
Map[First,data]
Out[2]= {x,c}
Study
http://reference.wolfram.com/mathematica/ref/Map.html
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