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EnterExpressionPacket
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EnterExpressionPacket

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is a WSTP packet that requests the evaluation of expr.

Details

  • expr is a Wolfram Language expression, not a string.
  • expr is evaluated by a complete pass through the Wolfram System main loop.
  • The notebook front end typically evaluates BoxData cell content by sending the kernel an expression such as EnterExpressionPacket[MakeExpression[BoxData[boxes],form]].

Examples

Basic Examples  (1)Summary of the most common use cases

Launch a subsidiary Wolfram Language kernel process:

In[1]:=1
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https://wolfram.com/xid/0bh1c2fbbo255y-ff4mb3
Out[1]=1

Read the first packet:

In[2]:=2
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https://wolfram.com/xid/0bh1c2fbbo255y-78u29f
Out[2]=2

Write an EnterExpressionPacket packet to the link without evaluating it:

In[3]:=3
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https://wolfram.com/xid/0bh1c2fbbo255y-5lqgfk

Read the resulting packets:

In[4]:=4
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https://wolfram.com/xid/0bh1c2fbbo255y-n33mf8
Out[4]=4
In[5]:=5
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https://wolfram.com/xid/0bh1c2fbbo255y-ktspa1
Out[5]=5
In[6]:=6
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https://wolfram.com/xid/0bh1c2fbbo255y-6i5vt
Out[6]=6

Close the link:

In[7]:=7
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https://wolfram.com/xid/0bh1c2fbbo255y-xdtugq
Wolfram Research (1996), EnterExpressionPacket, Wolfram Language function, https://reference.wolfram.com/language/ref/EnterExpressionPacket.html.
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Wolfram Research (1996), EnterExpressionPacket, Wolfram Language function, https://reference.wolfram.com/language/ref/EnterExpressionPacket.html.

Text

Wolfram Research (1996), EnterExpressionPacket, Wolfram Language function, https://reference.wolfram.com/language/ref/EnterExpressionPacket.html.

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Wolfram Research (1996), EnterExpressionPacket, Wolfram Language function, https://reference.wolfram.com/language/ref/EnterExpressionPacket.html.

CMS

Wolfram Language. 1996. "EnterExpressionPacket." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/EnterExpressionPacket.html.

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Wolfram Language. 1996. "EnterExpressionPacket." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/EnterExpressionPacket.html.

APA

Wolfram Language. (1996). EnterExpressionPacket. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/EnterExpressionPacket.html

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Wolfram Language. (1996). EnterExpressionPacket. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/EnterExpressionPacket.html

BibTeX

@misc{reference.wolfram_2025_enterexpressionpacket, author="Wolfram Research", title="{EnterExpressionPacket}", year="1996", howpublished="\url{https://reference.wolfram.com/language/ref/EnterExpressionPacket.html}", note=[Accessed: 26-March-2025 ]}

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@misc{reference.wolfram_2025_enterexpressionpacket, author="Wolfram Research", title="{EnterExpressionPacket}", year="1996", howpublished="\url{https://reference.wolfram.com/language/ref/EnterExpressionPacket.html}", note=[Accessed: 26-March-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_enterexpressionpacket, organization={Wolfram Research}, title={EnterExpressionPacket}, year={1996}, url={https://reference.wolfram.com/language/ref/EnterExpressionPacket.html}, note=[Accessed: 26-March-2025 ]}

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@online{reference.wolfram_2025_enterexpressionpacket, organization={Wolfram Research}, title={EnterExpressionPacket}, year={1996}, url={https://reference.wolfram.com/language/ref/EnterExpressionPacket.html}, note=[Accessed: 26-March-2025 ]}