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The Definitive Guide to Ruby Heap Dumps, Part I

In my last post, we looked at how you can dig into memory “leaks” on Heroku. These techniques all work well if you can reproduce the memory bloat locally. When you can’t, we can take a “heap dump” off of a running production server and analyze it for more information. In this two-post series, we’ll look at the basics of ...

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jQuery Popup Window example 

The aim of this example is to show you how to use popup windows with jQuery. jQuery provides a good plugin that can be used for this purpose. A Popup window has a title and some content that may be a simple message or any HTML code (e.g. a login form etc.) The jQuery dialog() method is used to show ...

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Learning: FOMO, need to relevant or drive to grow?

Managing what you should learn next as a software developer is a constant struggle. You feel like you suck at knowing what to learn next with all the new technologies and skills you could potentially work on. In fact, with each new skill you’re gambling with your time. What you’re learning can easily end up being a considerable waste of ...

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Bootstrap Form Example

The aim of this example is to explain and use Bootstrap forms. Just as an introduction, a web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text ...

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AngularJS MVC Tutorial – Part 1 – Project Setup

EDITORIAL NOTE: In this post, we feature a comprehensive AngularJS MVC Tutorial. Model View Controller or MVC as it is popularly called, is a software design pattern for developing web applications. 1. Introduction When I was asked to write a tutorial on MVC using Angular.js, I was not sure how to attack the subject because Angular.js is really popular and ...

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Fun With jQuery: Create A Puzzle

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. Learning a new technology outside of the context of paid work can be challenging after writing code for business applications all day, so I ...

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Python: Parsing a JSON HTTP chunking stream

I’ve been playing around with meetup.com’s API again and this time wanted to consume the chunked HTTP RSVP stream and filter RSVPs for events I’m interested in. I use Python for most of my hacking these days and if HTTP requests are required the requests library is my first port of call. I started out with the following script import ...

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jQuery forEach example

This example explains how to use iteration in jQuery. jQuery provides a powerful function for looping over elements. The jQuery each() function helps to iterate over an array, object properties and all HTML elements. This function has many overloaded signatures that take different arguments, all overloaded signatures take anonymous callback function to deal with current item. Let’s look at some ...

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Building Cross Model Search with Ember, Rails, Elasticsearch

With its accurate algorithms and autocomplete UI, Google has set the bar extremely high for web apps implementing custom search features. When a user searches your website, they don’t expect their query to only get results for one type of entity. For example, if you had a grocery store web app and someone searched for “banana,” the query results could ...

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