This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)

Needs

Needs
loads an appropriate file if the specified context is not already in $Packages.
Needs
loads file if the specified context is not already in $Packages.
  • Needs calls Get. By convention, the file loaded in this way is the one which contains a package that defines .
  • Needs typically reads in a file named .
Read in the file for the if it has not already been read:
The commands defined by the package are ready for use:
Read in the file for the Computer Arithmetic Package if it has not already been read:
In[1]:=
Click for copyable input
The commands defined by the package are ready for use:
In[3]:=
Click for copyable input
Out[3]=
New in 1