Nuprl Definition : fast-mapfilter
fast-mapfilter(p;f;L) ==  reduce(λx,a. if p[x] then [f[x] / a] else a fi [];L)
Definitions occuring in Statement : 
reduce: reduce(f;k;as)
, 
cons: [a / b]
, 
nil: []
, 
ifthenelse: if b then t else f fi 
, 
so_apply: x[s]
, 
lambda: λx.A[x]
Definitions occuring in definition : 
reduce: reduce(f;k;as)
, 
lambda: λx.A[x]
, 
ifthenelse: if b then t else f fi 
, 
cons: [a / b]
, 
so_apply: x[s]
, 
nil: []
FDL editor aliases : 
fast-mapfilter
Latex:
fast-mapfilter(p;f;L)  ==    reduce(\mlambda{}x,a.  if  p[x]  then  [f[x]  /  a]  else  a  fi  ;[];L)
Date html generated:
2016_05_15-PM-03_56_44
Last ObjectModification:
2015_09_23-AM-07_45_39
Theory : general
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