init access array values challenge

rs41 · rs41 · commit 8eabe22c56d6 · 2015-02-18T23:30:18.000+04:00
diff --git a/menu.json b/menu.json
@@ -12,6 +12,7 @@
   "ARRAYS",
   "ARRAY FILTERING",
   "LOOPING THROUGH ARRAYS",
+  "ACCESSING ARRAY VALUES",
   "OBJECTS",
   "OBJECT PROPERTIES",
   "FUNCTIONS",
diff --git a/problems/accessing-array-values/index.js b/problems/accessing-array-values/index.js
@@ -0,0 +1,44 @@
+var path = require('path');
+var getFile = require('../../get-file');
+var compare = require('../../compare-solution');
+
+var problemName = __dirname.split(path.sep);
+problemName = problemName[problemName.length-1];
+
+exports.problem  = getFile(path.join(__dirname, 'problem.md'));
+exports.solution = getFile(path.join(__dirname, 'solution.md'));
+
+var solutionPath        = path.resolve(__dirname, "../../solutions", problemName, "index.js");
+var troubleshootingPath = path.resolve(__dirname, "../../troubleshooting.md");
+
+exports.verify = function (args, cb) {
+
+  var attemptPath = path.resolve(process.cwd(), args[0]);
+  compare(solutionPath, attemptPath, function(match, obj) {
+
+    if(match) {
+      return cb(true);
+    }
+
+    if(!obj) {
+      // An error occured, we've already printed an error
+      return;
+    }
+
+    var message = getFile(troubleshootingPath);
+
+    message = message.replace(/%solution%/g, obj.solution);
+    message = message.replace(/%attempt%/g, obj.attempt);
+    message = message.replace(/%diff%/g, obj.diff);
+    message = message.replace(/%filename%/g, args[0]);
+
+    exports.fail = message;
+
+    cb(false);
+
+  });
+};
+
+exports.run = function (args) {
+  require(path.resolve(process.cwd(), args[0]));
+};
diff --git a/problems/accessing-array-values/problem.md b/problems/accessing-array-values/problem.md
@@ -0,0 +1,51 @@
+---
+
+# ACCESSING ARRAY VALUES
+
+Array elements can be accessed through index number.
+
+Index number starts from zero to array's property length minus one.
+
+Here is an example:
+
+
+```js
+	var pets = ['cat', 'dog', 'rat'];
+
+	console.log(pets[0]);
+```
+
+The above code will print the first element of `pets` array - string `cat`.
+
+Array elements must be accessed through only using bracket notation.
+
+Dot notation is invalid.
+
+Valid notation:
+
+```js
+	console.log(pets[0]);
+```
+
+Invalid notation:
+```
+	console.log(pets.1);
+```
+
+## The challenge:
+
+Create a file named `accessing-array-values.js`.
+
+In that file, define array `food` :
+```js 
+var food = ['apple', 'pizza', 'pear'];
+```
+
+
+Use `console.log()` to print the `second value of array to the terminal.
+
+Check to see if your program is correct by running this command:
+
+`javascripting verify accessing-array-values.js`
+
+---
diff --git a/problems/accessing-array-values/solution.md b/problems/accessing-array-values/solution.md
@@ -0,0 +1,11 @@
+---
+
+# SECOND ELEMENT OF ARRAY PRINTED!
+
+Good job accessing that element of array.
+
+In the next challenge we will work on an example of looping through arrays.
+
+Run `javascripting` in the console to choose the next challenge.
+
+---
diff --git a/problems/array-filtering/solution.md b/problems/array-filtering/solution.md
@@ -4,7 +4,7 @@
 
 Good job filtering that array.
 
-In the next challenge we will work on an example of looping through arrays.
+In the next challenge we will work on an example of accessing array values.
 
 Run `javascripting` in the console to choose the next challenge.
 
diff --git a/readme.md b/readme.md
@@ -61,7 +61,6 @@ Include the name `javascripting` and the name of the challenge you're working on
 
 Add these challenges:
 
-- "ACCESSING ARRAY VALUES"
 - "OBJECT KEYS"
 - "FUNCTION RETURN VALUES"
 - "THIS"
diff --git a/solutions/accessing-array-values/index.js b/solutions/accessing-array-values/index.js
@@ -0,0 +1,3 @@
+var food = ['apple', 'pizza', 'pear'];
+
+console.log(food[1]);

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+var food = ['apple', 'pizza', 'pear'];`
	`2`	`+`
	`3`	`+console.log(food[1]);`