Thoughts, stories, and ideas.
by Syed Aslam in Node · 3 min read
When using open-source NPM packages in your project, odds are you will run into a dependency that is missing a feature. This dependency doesn't do quite do what you want or has a bug that needs to be worked around for your use-case. What do you do in these situations, if your tea ...
by Syed Aslam in Ruby · 1 min read
With the uniq method you can remove duplicate elements from an array. However, calling uniq removes the duplicate elements and returns a new array with unique elemnts. It won't change the original array. You can use uniq! to remove duplicates in place. Another way is to only app ...
by Syed Aslam in Rails · 2 min read
You can set a background image purely through CSS thanks to the background-size property in CSS3. Using the html element is better than body as it's always at least the height of the browser window. You set a fixed and centered background on it, then adjust it's size using backgr ...
by Syed Aslam in Data Structures · 5 min read
Linked List was developed in 1955 by Allen Newell, Cliff Shaw, and Herbert A. Simon at RAND Corporation. The Linked List is a dynamically-allocated data structure, meaning it grows dynamically in memory on its own very time-efficiently (as opposed to an Array List, for which we n ...
by Syed Aslam in Ruby · 10 min read
It all starts with the IO class. The IO class is the basis for all input and output in Ruby either by itself or via its descendant classes, particularly File. To a large extent, IO's API consists of wrappers around system library calls, with some enhancements and modifications. A ...
in Active Record · 1 min read
There are multiple ways to retrive a random row from a table: This is fast and requires no custom SQL. All this does is count number of rows in a table and select one row at some offset while still having the table ordered by primary key. It uses offset (limit), not ID number, s ...