finished bytewiser tutorials

bytewiser/04_line_splitter.js

@@ -0,0 +1,16 @@
+var fs = require('fs');
+var path = process.argv[2];
+var startIndex = 0;
+fs.readFile(path, function (err, data) {
+  if (err) {
+    throw err;
+  }
+  for (var i = 0, len = data.length; i < len; i += 1) {
+    if (data[i] === 0x0a) { // 0x0a = '\n'
+      var bufferLength = i - startIndex;
+      console.log(data.slice(startIndex, i));
+      startIndex = i + 1;
+    }
+  }
+  console.log(data.slice(startIndex))
+})

bytewiser/05_concat.js

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+var buffers = [];
+process.stdin.on("data", function (chunk) {
+  buffers.push(chunk);
+});
+process.stdin.on("end", function () {
+  var buffer = Buffer.concat(buffers);
+  console.log(buffer);
+})

bytewiser/06_typed_arrays.js

@@ -0,0 +1,5 @@
+process.stdin.on("data", function (data) {
+  var a = new Uint8Array(data);
+  var j = JSON.stringify(a);
+  console.log(j);
+});

bytewiser/07_array_buffers.js

@@ -0,0 +1,4 @@
+var char = process.argv[2];
+var array32 = new Uint32Array([char]);
+var array16 = new Uint16Array(array32.buffer);
+console.log(JSON.stringify(array16));