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70 lines
1.1 KiB
Markdown
70 lines
1.1 KiB
Markdown
---
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id: 6a0dcc730cb92a616f86f0bf
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title: "Challenge 295: Schema Validator Part 1"
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challengeType: 28
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dashedName: challenge-295
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---
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# --description--
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Given an object (JavaScript) or dictionary (Python), determine if it matches the following schema:
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```json
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{
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username: string
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}
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```
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- Extra keys are allowed
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# --hints--
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`isValidSchema({ username: "bob" })` should return `true`.
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```js
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assert.isTrue(isValidSchema({ username: "bob" }));
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```
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`isValidSchema({ username: "jen", posts: 30 })` should return `true`.
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```js
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assert.isTrue(isValidSchema({ username: "jen", posts: 30 }));
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```
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`isValidSchema({ username: "" })` should return `true`.
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```js
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assert.isTrue(isValidSchema({ username: "" }));
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```
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`isValidSchema({ username: 7 })` should return `false`.
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```js
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assert.isFalse(isValidSchema({ username: 7 }));
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```
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`isValidSchema({ posts: 25 })` should return `false`.
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```js
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assert.isFalse(isValidSchema({ posts: 25 }));
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```
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# --seed--
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## --seed-contents--
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```js
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function isValidSchema(obj) {
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return obj;
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}
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```
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# --solutions--
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```js
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function isValidSchema(obj) {
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return typeof obj.username === 'string';
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}
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```
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