While T[keyof T] is short and concise, from my experience a lot of developers new to TypeScript usually have no idea what this means or why it's written like that when they first see it. I also feel ...

In a previous blog post, I looked at the subtle handling required to handle double with BigDecimal. As I discussed in that post, using the BigDecimal(double) constructor rarely does what one would ...

First of all, we should know that, when we face a bug in JavaScript, the first question we need to ask ourselves is what does the specification say should happen? and then ask does my behavior that ...

In other words, String.valueOf(String) does the null checking for you. The use of String.valueOf(Object) is particularly useful when implementing toString methods on custom classes. Because most ...