Mathematica 9 is now available
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.
SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION.
Wolfram Mathematica Documentation Center
DOCUMENTATION CENTER SEARCH
New to Mathematica? Find your learning path »
Mathematica > Core Language > Rules & Patterns > Patterns > Verbatim >
BUILT-IN MATHEMATICA SYMBOLTutorials »|See Also »|More About »

Verbatim

Verbatim[expr]
represents expr in pattern matching, requiring that expr be matched exactly as it appears, with no substitutions for blanks or other transformations.
MORE INFORMATION
  • Verbatim[x_] will match only the actual expression x_.
  • Verbatim is useful in setting up rules for transforming other transformation rules.
  • Verbatim[expr] does not maintain expr in an unevaluated form.
EXAMPLESCLOSE ALL
Basic Examples   (2)
Match any expression:
Match only the pattern x_:
Changes the pattern only when it is explicitly:
Match any expression:
In[1]:=
Click for copyable input
Out[1]=
Match only the pattern x_:
In[2]:=
Click for copyable input
Out[2]=
In[3]:=
Click for copyable input
Out[3]=
 
Changes the pattern only when it is explicitly:
In[1]:=
Click for copyable input
Out[1]=
Scope   (1)
Transform a rule into a list of rules with special cases:
This rule transforms an expression into its square:
Use Verbatim to make rules specific for number types:
The list of specific rules only transforms integers, reals, and rationals:
New in 3
Ask a question about this page  |  Suggest an improvement  |  Leave a message for the team
Format:   HTML  |  CDF