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Patterns

Guides

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  • MainGuide

Tech Notes

  • Match & Replace

Symbols

  • MatchBindings
  • MatchParts
  • MultiwayReplace
  • NameValuePattern
  • PatternMatch
Wolfram`Patterns`
MatchBindings
​
MatchBindings[match]
return pattern symbol bindings for a given match.
​
Examples  
(1)
Basic Examples  
(1)
In[1]:=
MatchBindings

PatternMatch
[{a,b,c},{x___,y___}]//Normal
Out[1]=
{{HoldPattern[x]a,HoldPattern[y]Sequence[b,c]},{HoldPattern[x]Sequence[a,b],HoldPattern[y]c},{HoldPattern[x]Sequence[a,b,c],HoldPattern[y]Sequence[]},{HoldPattern[x]Sequence[],HoldPattern[y]Sequence[a,b,c]}}
In[2]:=
MatchBindings

PatternMatch
[{a,b,c},{OrderlessPatternSequence[x___]}]//Normal
Out[2]=
{{HoldPattern[x]Sequence[a,b,c]},{HoldPattern[x]Sequence[a,c,b]},{HoldPattern[x]Sequence[b,a,c]},{HoldPattern[x]Sequence[b,c,a]},{HoldPattern[x]Sequence[c,a,b]},{HoldPattern[x]Sequence[c,b,a]}}
In[3]:=
MatchBindings

PatternMatch
[{a,b},{x:a|b,y:a|b}]//Normal
Out[3]=
{{HoldPattern[x]a,HoldPattern[y]b}}
In[4]:=
MatchBindings

PatternMatch
[{a,b},{x_.,y_}]//Normal
Out[4]=
{{HoldPattern[x]a,HoldPattern[y]b}}
In[5]:=
MatchBindings

PatternMatch
[{a},{x_,y_.}]//Normal
Out[5]=
{{HoldPattern[x]a,HoldPattern[y]Sequence[]}}
In[6]:=
MatchBindings

PatternMatch
[{a,b},{x_.,y_:2}]//Normal
Out[6]=
{{HoldPattern[x]a,HoldPattern[y]b}}
In[7]:=
MatchBindings

PatternMatch
[{a},{x_.,y_:2}]//Normal
Out[7]=
{{HoldPattern[x]a,HoldPattern[y]2},{HoldPattern[x]a,HoldPattern[y]Sequence[]},{HoldPattern[x]Sequence[],HoldPattern[y]a}}
In[8]:=
MatchBindings

PatternMatch
[{a,b},{Longest[Optional[x__]],y_:2}]//Normal
Out[8]=
{{HoldPattern[x]Sequence[a,b],HoldPattern[y]2},{HoldPattern[x]Sequence[a,b],HoldPattern[y]Sequence[]},{HoldPattern[x]a,HoldPattern[y]b}}
RelatedGuides
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Guide (internal)
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MainGuide
""

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