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Excerpt

Create a new function based on an existing function but with some parameters pre-defined.

 

Syntax

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// create new function based on existing one with one or more pre-defined arguments
var fNewnewFn = fExistingexistingFn.uCurry(cArgscurry(args...);
 
// use the new function, optionally specifying additional arguments
fNew(args
var result = newFn(extraArgs...);

Parameters / Functions

fExistingcArgsargs
Parameter / FunctionTypeMandatoryDescriptionUtil.js versionAPI Version
existingFnFunction(tick)The original function1.0.5
args...One or more arguments(tick)

One or more arguments that will be passed in to

fExisting

existingFn when you access it via

fNew
0.5

newFn

If you don't specify any arguments, .curry() will just return existingFn as there's no point in creating a curried function.

1.0
extraArgs...Additional arguments(question)Optionally (based on requirements of fExisting) pass in remaining arguments when calling fNew newFn1.0.5

Return value

<fNew>
ValueTypeDescriptionUtil.js versionAPI Version
<newFn>FunctionA new function which will automatically set the cArgs arguments for fExisting and then append any additional arguments passed in to fNew.1.0.5
<fExisting><existingFn>FunctionIf you do not specify cArgs then the existing function will be returned.1.0.5
<result>VariantThe result of running newFn()1.0

Example

Code Block
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titleBasic example - pre-defining "not" and "a" params of a "booler" functionPredefining first param to a number...
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function add(a, b) {
  return a + b;
}
 
var Add5To = add.curry(5); // parameter "a" is pre-defined with value 5
 
Add5To(10); // 15 (parameter "a" already set to 5, "b" set to 10)
A better example is shown in the Object.uAddProperty() example using a curried allianceExistsBetween() function.
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Availability
Status
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Requires:

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Availability

This feature requires:

Util.js v0.5 and above.
Contents

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Function Manipulation

Topics:

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See

also

Also

Related articles:

  • Function.uCompose() – create a new function by merging two existing functions
  • Curry – I based my uCurry function on code samples from this blog (which includes more detailed information on how Curry works).

    pages: