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ydkjs has moved original book to a branch #20

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ydkjs has moved original book to a branch #20

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2 changes: 1 addition & 1 deletion index.bs
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Expand Up @@ -847,7 +847,7 @@ TypeError: String.prototype.substring: 'this' is null or undefined

When writing mission-critical code, one must put exception handling at the forefront in programming. As such, the question of "can *some built-in function* ever throw an exception?" may be oft-pondered.

In this example, we shall try to answer this question for two language built-in functions, <code class=idl>Boolean()</code> and <code class=idl>String()</code>. We will only look at direct calls to those functions, not the cases of `new Boolean()` and `new String()` which form boxed objects – easily one of the <a href="https://github.com/getify/You-Dont-Know-JS/blob/master/types%20%26%20grammar/ch3.md#object-wrapper-gotchas">most undesirable features in JavaScript</a> and a very much discouraged practice in pretty much all JS style guides out there [[YDKJS]].
In this example, we shall try to answer this question for two language built-in functions, <code class=idl>Boolean()</code> and <code class=idl>String()</code>. We will only look at direct calls to those functions, not the cases of `new Boolean()` and `new String()` which form boxed objects – easily one of the <a href="https://github.com/getify/You-Dont-Know-JS/blob/1st-ed/types%20%26%20grammar/ch3.md#object-wrapper-gotchas">most undesirable features in JavaScript</a> and a very much discouraged practice in pretty much all JS style guides out there [[YDKJS]].

After navigating to the section for {{ECMAScript/Boolean()}} in the spec, we see that the algorithm seems to be fairly short:

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