Needs

Needs["context`"]

loads an appropriate file if the specified context is not already in $Packages.

Needs["context`","file"]

loads file if the specified context is not already in $Packages.

Details

  • Needs["context`"] calls Get["context`"]. By convention, the file loaded in this way is the one that contains a package that defines context`.
  • Needs["file`"] typically reads in a file named .

Examples

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Basic Examples  (1)

Read in the file for the Computer Arithmetic Package if it has not already been read:

The commands defined by the package are ready for use:

Properties & Relations  (1)

Once[Get[package]] is similar to Needs[package]:

Introduced in 1988
 (1.0)