title: lodash convert object value(string) to number
body: <p>I have a very simple object like below. I am trying to use <code>lodash</code> as I am using it in other parts of my application. I am trying to find a way to convert the value of a specific key to a number.</p>
  
  <p>In the example below, something like:</p>
  
  <pre><code>_.mapValues(obj.RuleDetailID, _.method('parseInt'))
  </code></pre>
  
  <hr>
  
  <p><strong>Object:</strong></p>
  
  <pre><code>var obj = [{
    "RuleDetailID": "11624",
    "AttributeValue": "172",
    "Value": "Account Manager",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": "11626",
    "AttributeValue": "686",
    "Value": "Agent",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": "11625",
    "AttributeValue": "180",
    "Value": "Analyst",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": "11629",
    "AttributeValue": "807",
    "Value": "Individual Contributor",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": "11627",
    "AttributeValue": "690",
    "Value": "Senior Agent",
    "IsValueRetired": "0"
  }];
  </code></pre>
  
  <p><strong>Expected Output:</strong></p>
  
  <pre><code>var obj = [{
    "RuleDetailID": 11624,
    "AttributeValue": "172",
    "Value": "Account Manager",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": 11626,
    "AttributeValue": "686",
    "Value": "Agent",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": 11625,
    "AttributeValue": "180",
    "Value": "Analyst",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": 11629,
    "AttributeValue": "807",
    "Value": "Individual Contributor",
    "IsValueRetired": "0"
  }, {
    "RuleDetailID": 11627,
    "AttributeValue": "690",
    "Value": "Senior Agent",
    "IsValueRetired": "0"
  }];
  </code></pre>
  
  <p>Is there a chain of methods I can whip together with <code>lodash</code> to achieve this?</p>