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Getting Pieces of Lists
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Elements of Lists
List Manipulation
Parts of Expressions
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First
First
[
expr
]
gives the first element in
expr
.
MORE INFORMATION
First
[
expr
]
is equivalent to
expr
[[1]]
.
EXAMPLES
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Basic Examples
(3)
Extract the first element of a list:
In[1]:=
Out[1]=
Extract the first row of a matrix:
In[1]:=
Out[1]=
The head need not be
List
:
In[1]:=
Out[1]=
Generalizations & Extensions
(1)
Properties & Relations
(1)
Possible Issues
(2)
SEE ALSO
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TUTORIALS
Getting Pieces of Lists
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Elements of Lists
List Manipulation
Parts of Expressions
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© 2008 Wolfram Research, Inc.
EXAMPLES
Basic Examples 
Generalizations & Extensions 