From what I have understood:

Currying - functions returning functions

string.capitalize(1)('character')('at the end')

Method chaining - methods returning objects

string.lowercase.capitalize.uppercase

Is this understanding correct?

If so, are there cases one of them is better than the other?

Cause it seems to me that method chaining is better and more readable. You also have autopletion showing what methods you can use if you hit "dot" and it will show all the arguments you can pass.

From what I have understood:

Currying - functions returning functions

string.capitalize(1)('character')('at the end')

Method chaining - methods returning objects

string.lowercase.capitalize.uppercase

Is this understanding correct?

If so, are there cases one of them is better than the other?

Cause it seems to me that method chaining is better and more readable. You also have autopletion showing what methods you can use if you hit "dot" and it will show all the arguments you can pass.

• javascript
• currying
• method-chaining

Share Improve this question Follow edited Apr 25, 2022 at 15:33 Wicket 38.8k99 gold badges8080 silver badges195195 bronze badges asked Nov 8, 2010 at 3:08 ajsieajsie 79.9k110110 gold badges284284 silver badges387387 bronze badges 1

• 1 JavaScript does not support currying natively (it can be emulated with closures, but.. also, the example posted does not really look like a sensible curry :-) and thus just chaining (which is not orthogonal to currying) is normally used. A big "reason" to curry is to be able to use partially applied functions -- once again, doable just with closures. – user166390 Commented Nov 8, 2010 at 3:13

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1 Answer 1

Sorted by: Reset to default 9

A better equivalent of currying would be the Builder design pattern.

Ergo, you would do something like:

myObject.setIndexRangeToEffect(1,1).setTextTransformation(UPPERCASE).execute();

At any point before calling execute, you essentially have a "curried" action object.