One of the things I understand but dont really like about the range(), which is available in utility libraries such as lodash and YourJS, is that it produces an array of numbers ranging from the starting number to the ending number but not including the ending number. Let’s say for Read more…
A few days ago I was working on manipulating data that I found in Wikipedia. The data was in a table where the colspans and rowspans were making it difficult to simply programmatically pull data. Then I started looking into code to turn HTML table to JSON but for some Read more…
Recently I was working on something that required inserting key-value pairs into an array after a specific key in PHP. As I was looking through stackoverflow answers I realized that there was no awesome answer that really jumped out at me. Therefore I decided to take a few minutes to Read more…
Two years ago I wrote a post about how to pass arguments by name in JavaScript. Recently I have started to ramp a new project call YourJS and found a need to be able to read the names of the parameters of the given function. The following getParamNames() function takes Read more…
If you execute the following code, what do you think will be the result? Will an assert error occur? The answer is yes! The reason why is because list1 = list1 + list2 is actually different from list1 += list2 in Python. Let’s see what happened when I ran the Read more…
One of the many cool things about Python is that you can often use builtin functions to either get a value from a dictionary (or an object with getattr) or default to a specified value. Unfortunately lists do not provide such a function. The simplest use case would be to Read more…
For a while many developers, including myself, suggested that Array.prototype.slice() be used to turn any array-like object into an array. Recently, I was alerted to a scenario in which this does not work as expected. Let’s take the following code for example: In most browsers, the above code would take Read more…
Last year I wrote about having heredoc like strings available in JavaScript. Today I figured i’d briefly bring the topic back, providing a solution for returning an array of all comments found in a function: Why is this useful? As you may know, writing multiline strings in JavaScript isn’t always Read more…
Most of us know the simple way to get the keys from an object in JavaScript (~61 bytes after minified): But how many of us knew that array assignment within the for-in loop would work? (~58 bytes after minified) To be honest I cant take the credit for this because Read more…
When analyzing data in Excel at times it is necessary to pull data from another data source based on more than one column. In this case you can use the MATCH function in an array formula. Just so you understand the general idea of an array, it is a collection Read more…