CellProlog
is an option to Cell that gives an expression to evaluate before each ordinary evaluation of the contents of the cell.
Details
- CellProlog:>expr evaluates expr for every ordinary kernel evaluation done in the cell, as initiated for example by
![TemplateBox[{shift, return}, Key1, BaseStyle -> {Notes, FontWeight -> Plain, FontFamily -> Source Sans Pro}]](Files/CellProlog.en/1.png "TemplateBox[{shift, return}, Key1, BaseStyle -> {Notes, FontWeight -> Plain, FontFamily -> Source Sans Pro}]")
or by Evaluate in Place. - CellProlog is not evaluated for evaluations associated with Dynamic objects.
- The default setting is CellProlog->None.
- CellProlog is often set at a style or notebook level, rather than for individual cells.
Examples
Applications (2)
Rules for temporarily setting $Post:
| In[1]:= |
Rules for setting up local package contexts for a cell:
| In[1]:= |
Introduced in 2007
(6.0)