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fix(curriculum): give useful hint for step 50 of statistics calculator if you are missing the starting value of the reduce. (#57145)

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Agung Saputra
2024-12-18 22:07:22 +07:00
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parent 648cc58d68
commit 03ec4b6fed
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6
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fcb156834128001ea945.md
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@@ -33,6 +33,12 @@ assert.match(getVariance.toString(), /sumSquaredDifferences\s*=\s*squaredDiffere
Your `reduce` callback should return the sum of `acc` and `el`.
```js
assert.match(getVariance.toString(), /sumSquaredDifferences\s*=\s*squaredDifferences\.reduce\(\s*function\s*\(\s*acc\s*,\s*el\s*\)\s*\{\s*return\s*acc\s*\+\s*el\s*;\s*\}/);
```
You are missing the starting value of the `reduce`.
```js
assert.match(getVariance.toString(), /sumSquaredDifferences\s*=\s*squaredDifferences\.reduce\(\s*function\s*\(\s*acc\s*,\s*el\s*\)\s*\{\s*return\s*acc\s*\+\s*el\s*;\s*\}\s*,\s*0\s*\)/);
```