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Last change
on this file was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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[d24f17c] | 1 | import _curry1 from "./internal/_curry1.js";
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| 2 | import assoc from "./assoc.js";
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| 3 | import lens from "./lens.js";
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| 4 | import prop from "./prop.js";
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| 5 | /**
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| 6 | * Returns a lens whose focus is the specified property.
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| 7 | *
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| 8 | * @func
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| 9 | * @memberOf R
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| 10 | * @since v0.14.0
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| 11 | * @category Object
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| 12 | * @typedefn Lens s a = Functor f => (a -> f a) -> s -> f s
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| 13 | * @sig String -> Lens s a
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| 14 | * @param {String} k
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| 15 | * @return {Lens}
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| 16 | * @see R.view, R.set, R.over
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| 17 | * @example
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| 18 | *
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| 19 | * const xLens = R.lensProp('x');
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| 20 | *
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| 21 | * R.view(xLens, {x: 1, y: 2}); //=> 1
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| 22 | * R.set(xLens, 4, {x: 1, y: 2}); //=> {x: 4, y: 2}
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| 23 | * R.over(xLens, R.negate, {x: 1, y: 2}); //=> {x: -1, y: 2}
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| 24 | */
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| 25 |
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| 26 | var lensProp =
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| 27 | /*#__PURE__*/
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| 28 | _curry1(function lensProp(k) {
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| 29 | return lens(prop(k), assoc(k));
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| 30 | });
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| 31 |
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| 32 | export default lensProp; |
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