jiapengyu
29 lines
776 B
JavaScript
29 lines
776 B
JavaScript
import _curry1 from './internal/_curry1';
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import assoc from './assoc';
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import lens from './lens';
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import prop from './prop';
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/**
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* Returns a lens whose focus is the specified property.
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*
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* @func
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* @memberOf R
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* @since v0.14.0
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* @category Object
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* @typedefn Lens s a = Functor f => (a -> f a) -> s -> f s
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* @sig String -> Lens s a
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* @param {String} k
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* @return {Lens}
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* @see R.view, R.set, R.over
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* @example
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*
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* var xLens = R.lensProp('x');
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*
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* R.view(xLens, {x: 1, y: 2}); //=> 1
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* R.set(xLens, 4, {x: 1, y: 2}); //=> {x: 4, y: 2}
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* R.over(xLens, R.negate, {x: 1, y: 2}); //=> {x: -1, y: 2}
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*/
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var lensProp = /*#__PURE__*/_curry1(function lensProp(k) {
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return lens(prop(k), assoc(k));
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});
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export default lensProp; |