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davidbarral/curry-test.js

Last active February 12, 2018 10:56
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Curry: TDD partial application
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curry-test.js
const expect = x => ({
toBe: y => {
if (x !== y) {
throw new Error(`expected ${x} to be ${y}`);
}
}
});
const sum4 = curry((a, b, c, d) => a + b + c + d);
expect(sum4()(1, 2, 3, 4)).toBe(10);
expect(sum4(1)(2, 3, 4)).toBe(10);
expect(sum4(1, 2)(3, 4)).toBe(10);
expect(sum4(1, 2, 3)(4)).toBe(10);
expect(sum4(1, 2, 3, 4)).toBe(10);
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