Translate Chapter of Typed Arrays

08-coding-interview-prep/data-structures.json

@@ -8,34 +8,34 @@
       "id": "587d8253367417b2b2512c6a",
       "title": "Typed Arrays",
       "description": [
-        "Arrays are JavaScript objects that can hold a lot of different elements.",
+        "数组是一种能存储各种数据类型的JavaScript对象。",
         "<code>var complexArr = [1, 5, \"2\", \"Word\", {\"name\": \"James\"}];</code>",
-        "Basically what happens in the background is that your browser will automatically give the right amount of memory space for that array. It will also change as needed if you add or remove data.",
-        "However, in the world of high performance and different element types, sometimes you need to be more specific on how much memory is given to an array.",
-        "<dfn>Typed arrays</dfn> are the answer to this problem. You are now able to say how much memory you want to give an array. Below is a basic overview of the different types of arrays available and the size in bytes for each element in that array.",
-        "<table class='table table-striped'><tr><th>Type</th><th>Each element size in bytes</th></tr><tr><td><code>Int8Array</code></td><td>1</td></tr><tr><td><code>Uint8Array</code></td><td>1</td></tr><tr><td><code>Uint8ClampedArray</code></td><td>1</td></tr><tr><td><code>Int16Array</code></td><td>2</td></tr><tr><td><code>Uint16Array</code></td><td>2</td></tr><tr><td><code>Int32Array</code></td><td>4</td></tr><tr><td><code>Uint32Array</code></td><td>4</td></tr><tr><td><code>Float32Array</code></td><td>4</td></tr><tr><td><code>Float64Array</code></td><td>8</td></tr></table>",
-        "There are two ways in creating these kind of arrays. One way is to create it directly. Below is how to create a 3 length <code>Int16Array</code>.",
+        "通常浏览器会自动的为数组分配合适的内存空间,同时内存大小也会随着你增删元素而发生变化。",
+        "然而，在一些对高性能有要求以及有不同数据类型的情况下，有时需要更精确地给一个数组分配内存空间。",
+        "<dfn>Typed arrays</dfn> 就是解决这类问题的一种方案。 我们可以精确地给一个数组分配内存空间。如下列表说明了这种数组能够存放的数据类型以及不同数据类型所占据的字节数。",
+        "<table class='table table-striped'><tr><th>类型</th><th>所占字节数</th></tr><tr><td><code>Int8Array</code></td><td>1</td></tr><tr><td><code>Uint8Array</code></td><td>1</td></tr><tr><td><code>Uint8ClampedArray</code></td><td>1</td></tr><tr><td><code>Int16Array</code></td><td>2</td></tr><tr><td><code>Uint16Array</code></td><td>2</td></tr><tr><td><code>Int32Array</code></td><td>4</td></tr><tr><td><code>Uint32Array</code></td><td>4</td></tr><tr><td><code>Float32Array</code></td><td>4</td></tr><tr><td><code>Float64Array</code></td><td>8</td></tr></table>",
+        "有两种方式可以创这类数组。其中一种是直接创建，如下代码创建了一个长度为3的 <code>Int16Array</code>.",
         "<blockquote>var i8 = new Int16Array(3);<br>console.log(i8);<br>// Returns [0, 0, 0]</blockquote>",
-        "You can also create a <dfn>buffer</dfn> to assign how much data (in bytes) you want the array to take up.",
-        "<strong>Note</strong><br>To create typed arrays using buffers, you need to assign the number of bytes to be a multiple of the bytes listed above.",
+        "我们也可以通过创建 <dfn>buffer</dfn> 的方式来决定一个数组要容纳多少元素。",
+        "<strong>提示</strong><br>我们可以通过分配对应长度字节数来创建一个和上方代码中一样的类型数组。",
         "<blockquote>// Create same Int16Array array differently<br>var byteSize = 6; // Needs to be multiple of 2<br>var buffer = new ArrayBuffer(byteSize);<br>var i8View = new Int16Array(buffer);<br>buffer.byteLength; // Returns 6<br>i8View.byteLength; // Returns 6<br>console.log(i8View); // Returns [0, 0, 0]</blockquote>",
-        "<dfn>Buffers</dfn> are general purpose objects that just carry data. You cannot access them normally. To access them, you need to first create a <dfn>view</dfn>.",
+        "<dfn>Buffers</dfn> 是一类存储数据的特定类型对象。我们需要通过创建视图来访问这类对象，不能直接访问。",
         "<blockquote>i8View[0] = 42;<br>console.log(i8View); // Returns [42, 0, 0]</blockquote>",
-        "<strong>Note</strong><br>Typed arrays do not have some of the methods traditional arrays have such as <code>.pop()</code> or <code>.push()</code>. Typed arrays also fail <code>Array.isArray()</code> that checks if something is an array. Although simpler, this can be an advantage for less-sophisticated JavaScript engines to implement them.",
+        "<strong>提示</strong><br>Typed Arrays并没有像 <code>.pop()</code> 或 <code>.push()</code>这些一般数组拥有的方法。 使用 <code>Array.isArray()</code> 方法对Typed Arrays做判断返回的是fail，而非true。因为更加简洁，所以更便于简化JavaScript引擎去实现这类数组。",
         "<hr>",
-        "First create a <code>buffer</code> that is 64-bytes. Then create a <code>Int32Array</code> typed array with a view of it called <code>i32View</code>."
+        "先创建一个64个字节的 <code>buffer</code> ， 再创建一个类型是 <code>Int32Array</code> 名称叫做 <code>i32View</code>的视图。"
       ],
       "tests": [
         {
-          "text": "Your <code>buffer</code> should be 64 bytes large.",
+          "text": " <code>buffer</code> 应该有64个字节的长度。",
           "testString": "assert(buffer.byteLength === 64, 'Your <code>buffer</code> should be 64 bytes large.');"
         },
         {
-          "text": "Your <code>i32View</code> view of your buffer should be 64 bytes large.",
+          "text": " <code>i32View</code> 视图应该有64个字节的长度。",
           "testString": "assert(i32View.byteLength === 64, 'Your <code>i32View</code> view of your buffer should be 64 bytes large.');"
         },
         {
-          "text": "Your <code>i32View</code> view of your buffer should be 16 elements long.",
+          "text": " <code>i32View</code> 视图应该能容纳16个元素。",
           "testString": "assert(i32View.length === 16, 'Your <code>i32View</code> view of your buffer should be 16 elements long.');"
         }
       ],