CODEWITHSUNDEEP
ramda.js
Kindzoku
Kindzoku

Reputation: 1420

Ramda: pass predicate equality argument last

I heve a static collection. And I want to check for any match by value each time, the value is changed.

Now I have:

var isOk = R.any(item => item.test(value), items);

What I want:

To store a function in other place and to call it like:

var isOk = checkMatch(value);

Any ideas? Thx.

UPDATE I'm looking for solution in Ramda way. Something with changind call order of R.__

Upvotes: 0

Views: 51

Answers (2)

Scott Sauyet
Scott Sauyet

Reputation: 50807

I don't know for sure that your test items are regular expressions to use on Strings, but if they are, you might try something like this:

const anyMatch = curry((regexes, val) => any(regex => test(regex, val), regexes))

const testFiles = anyMatch([/test\/(.)+\.js/i, /\.spec\.js/i])

testFiles('foo.js') //=> false
testFiles('test/foo.js') //=> true
testFiles('foo.spec.js') //=> true

And this looks clean to me, and very much in the spirit of Ramda. If you wanted to make it point-free, you could do this:

const anyMatch = useWith(flip(any), [identity, flip(test)])

But I find that much less readable. To me, point-free is a tool worth using when it improves readability, and to avoid when it doesn't.

You can see this in action on the Ramda REPL.

Upvotes: 1

AKX
AKX

Reputation: 169308

Wrap it in a closure that takes value.

var isOk = (value) => R.any(item => item.test(value), items);

var isOk_foobar = isOk('foobar');

Upvotes: 2

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