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41 lines
905 B
41 lines
905 B
/*
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* A String object has a special [[GetOwnProperty]] implementation which special
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* cases array indexes in the range [0, strlen-1], and gives them the attributes:
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*
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* - [[Enumerable]]: true
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* - [[Writable]]: false
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* - [[Configurable]]: false
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*
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*/
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/*===
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0 string
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1 string
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2 string
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===*/
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var a = "foo"; /* no need to create explicit object, ToObject coercion suffices */
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var i;
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try {
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for (i in a) {
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/* since keys are enumerable, all indices should appear here */
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print(i, typeof i);
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}
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} catch (e) {
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print(e.name);
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}
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/* FIXME: check property descriptors */
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/*===
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o
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z
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3
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===*/
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a = new String("foo");
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a[2] = 'z'; /* virtual property is not Writable, ignored */
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print(a[2]);
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a[3] = 'z'; /* virtual property does not exist, so does NOT prevent a write */
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print(a[3]);
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print(a.length); /* length is not affected because strings don't have a magic 'length' */
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