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Wolfram Language & System Documentation Center
Curry
  • See Also
    • Construct
    • Composition
    • Function
    • Slot
    • Identity
    • Apply
    • Map
    • See Also
      • Construct
      • Composition
      • Function
      • Slot
      • Identity
      • Apply
      • Map

Curry[f,n]

represents an operator form of the function f of n arguments so that Curry[f,n][x1]…[xn] is equivalent to f[x1,…,xn].

Curry[f]

represents an operator form of the function f of two arguments so that Curry[f][y][x] is equivalent to f[x,y].

Curry[f,{i1,…,in}]

represents an operator form of the function f of n arguments so that Curry[f,{i1,…,in}][x1]…[xn] is equivalent to f[xi1,…,xin].

Curry[f,k{i1,…,in}]

represents a k-arguments operator form of the function f of n arguments so that Curry[f,k{i1,…,in}][x1]…[xk] is equivalent to f[xi1,…,xin], with k≥Max[{i1,…,in}].

Details
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Applications  
Properties & Relations  
See Also
History
Cite this Page
OBSOLETE SYMBOL
  • See Also
    • Construct
    • Composition
    • Function
    • Slot
    • Identity
    • Apply
    • Map
    • See Also
      • Construct
      • Composition
      • Function
      • Slot
      • Identity
      • Apply
      • Map

Curry

Curry is being phased out in favor of CurryApplied and OperatorApplied, which were introduced experimentally in Version 12.1.

Curry[f,n]

represents an operator form of the function f of n arguments so that Curry[f,n][x1]…[xn] is equivalent to f[x1,…,xn].

Curry[f]

represents an operator form of the function f of two arguments so that Curry[f][y][x] is equivalent to f[x,y].

Curry[f,{i1,…,in}]

represents an operator form of the function f of n arguments so that Curry[f,{i1,…,in}][x1]…[xn] is equivalent to f[xi1,…,xin].

Curry[f,k{i1,…,in}]

represents a k-arguments operator form of the function f of n arguments so that Curry[f,k{i1,…,in}][x1]…[xk] is equivalent to f[xi1,…,xin], with k≥Max[{i1,…,in}].

Details

  • Curry[f] is equivalent to Curry[f,{2,1}].
  • Curry[f,n] is equivalent to Curry[f,{1,2,…,n}].
  • Curry[f,{i1,…,in}] is equivalent to Curry[f,Max[{i1,…,in}]->{i1,…,in}].
  • Curry[f,{i1,…,in,opts}][x1]…[xk] is equivalent to f[xi1,…,xin,opts] for a sequence opts of options.
  • The ip^(th) curried argument of Curry[f,{i1,…,in}] will be the p^(th) argument of f.
  • Curry[f,arity][x1,…][y1,…]…[z1,…] is equivalent to Curry[f,arity][x1,…,y1,…,z1,…], so that the structure of brackets is not relevant, only the number of arguments.

Examples

open all close all

Basic Examples  (3)

Curry the second argument of a function of two arguments:

Curry a function of three arguments, keeping their order:

This is a curried form of Integrate that curries two integration variables:

Apply it to a function of variables and :

That is equivalent to:

Scope  (6)

Curry the second argument of a function:

Apply the operator:

Curry a function of 3 arguments, keeping their order:

Curry a function of 3 arguments, applying a permutation before they are passed to the function:

These are curried operators taking 4 arguments, but only 2 of them are passed to the function f:

Use arguments of the curried operator with any bracketing structure:

Curry Level with default option values:

Pass options to Level:

Applications  (5)

Curry Composition of 3 functions:

Feed the 3 functions sequentially:

Apply the composition to an expression:

Specify how many arguments are functions to be composed:

Use Curry to construct the opposite order of a given ordering function:

Build an array of subscripted variables:

Build the K and S combinators using Curry:

The combinations SKK and SKS are equivalent to the identity:

Build the B and C combinators using S and K:

Properties & Relations  (6)

Curry[f] is equivalent to Curry[f,{2,1}]:

For a function of zero arguments, Curry[f,0] returns f[]:

If additional arguments are provided, the empty pair of brackets is still inserted:

Curry Curry itself:

Compare to Construct:

For positive n, Curry[Construct,n][f] is equivalent to Curry[f,n-1]:

The relation also holds for n=1:

Compose two Curry operators with a permutation and its inverse:

The result is equivalent to using Curry without reordering the arguments:

Take two permutation lists of the same length:

Compose the corresponding Curry operators:

Alternatively, use Curry with their permutation product, in the same order:

See Also

Construct  Composition  Function  Slot  Identity  Apply  Map

Function Repository: ApplyLevel  Uncurry  FlipFunction

History

Introduced in 2018 (11.3)

Wolfram Research (2018), Curry, Wolfram Language function, https://reference.wolfram.com/language/ref/Curry.html.

Text

Wolfram Research (2018), Curry, Wolfram Language function, https://reference.wolfram.com/language/ref/Curry.html.

CMS

Wolfram Language. 2018. "Curry." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Curry.html.

APA

Wolfram Language. (2018). Curry. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Curry.html

BibTeX

@misc{reference.wolfram_2025_curry, author="Wolfram Research", title="{Curry}", year="2018", howpublished="\url{https://reference.wolfram.com/language/ref/Curry.html}", note=[Accessed: 01-December-2025]}

BibLaTeX

@online{reference.wolfram_2025_curry, organization={Wolfram Research}, title={Curry}, year={2018}, url={https://reference.wolfram.com/language/ref/Curry.html}, note=[Accessed: 01-December-2025]}

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