BUILT-IN MATHEMATICA SYMBOL

BeginPackage

makes

and

the only active contexts.

BeginPackage

calls Needs on the

.

MORE INFORMATION

BeginPackage is typically used at the beginning of a Mathematica package.

BeginPackage resets the values of both $Context and $ContextPath.

The interpretation of symbol names depends on context. BeginPackage thus affects the parsing of input expressions.

EXAMPLES

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Basic Examples (1)

Commands to define a simple package:

The context for symbol creation has been changed to

:

The context path for symbol lookup includes

:

Here are the commands defining the function in the package:

Restore the context, but leave

on the context path for symbol lookup:

Since EndPackage leaves

on the context path, the function defined is visible:

Get the square of 12:

Commands to define a simple package:

In[1]:=

The context for symbol creation has been changed to

:

In[2]:=

Out[2]=

The context path for symbol lookup includes

:

In[3]:=

Out[3]=

Here are the commands defining the function in the package:

In[4]:=

In[5]:=

Restore the context, but leave

on the context path for symbol lookup:

In[6]:=

Since EndPackage leaves

on the context path, the function defined is visible:

In[7]:=

Get the square of 12:

In[8]:=

Out[8]=

Scope (1)

Use BeginPackage and EndPackage to start and end a package in a file:

The package can be loaded with Get:

Once loaded, the definitions work: