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Stephen Wolfram
SEARCH MATHEMATICA 8 DOCUMENTATION
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.
SEE THE
DOCUMENTATION CENTER
FOR THE LATEST INFORMATION.
Mathematica
>
Assignments
>
Built-in
Mathematica
Symbol
Special Forms of Assignment
Tutorials »
|
AppendTo
Sow
AddTo
Prepend
See Also »
|
Assignments
Elements of Lists
More About »
PrependTo
PrependTo
[
s
,
elem
]
prepends
elem
to the value of
s
, and resets
s
to the result.
MORE INFORMATION
PrependTo
[
s
,
elem
]
is equivalent to
s
=
Prepend
[
s
,
elem
]
.
PrependTo
[
s
,
elem
]
does not evaluate
s
.
You can use
PrependTo
repeatedly to build up a list, though
Sow
and
Reap
will usually be more efficient.
»
PrependTo
works on
SparseArray
objects, returning ordinary lists if necessary.
»
EXAMPLES
CLOSE ALL
Basic Examples
(1)
Assign
l
to a list:
In[1]:=
Out[1]=
Include a new value at the end of the list:
In[2]:=
Out[2]=
The value assigned to
l
has changed:
In[3]:=
Out[3]=
Generalizations & Extensions
(2)
Applications
(1)
Possible Issues
(4)
SEE ALSO
AppendTo
Sow
AddTo
Prepend
TUTORIALS
Special Forms of Assignment
MORE ABOUT
Assignments
Elements of Lists
New in 1
© 2013 Wolfram Research, Inc.
EXAMPLES
Basic Examples 
Generalizations & Extensions 