In this post I will be writing about some lodash difference method that can be used to find out what values in an array are not included on one or more additional arrays. So then as the name implies, it is a way to go about extracting the difference from an array, using one or more additional arrays as a way to known what to extract.
The comparisons are made in compliance with the Same Value Zero standard that is used in methods like that of the lodash eq method. This method of preforming comparisons works in a very similar way to that if the strict equals operator, and the native Object.is method but with subtle differences when it comes to handing NaN and rare cases with negative zero.
The lodash distance method can be used to find the difference between two arrays. Just give an array as the first argument, and another as the second, and what will be returned is a new array of values that are not in second array when comparing element by element.
In some cases a lodash method such as difference can help make quick work of this kind of task. It is often a nice concise way of doing so at times sure. However there are many other lodash methods that can be used as well.
There is also the lodash difference with method as well on top of the regular lodash difference method. The difference is that I can use another method to aide in making the comparisons.
If you are not all ready up to speed with the lodash filter method as well as the native Array filter equivalent, then maybe it would be a good idea to look into these methods.
So the lodash difference method is another one of those kinds of methods that make me thing that lodash is not really necessary. Do not get me wrong the library does have its redeeming qualities when it comes to the idea of having a stand alone method for doing things rather than poly filling native methods. There are many taking points about why using lodash, or something like lodash in a project is a good idea. I just can nit say that the lodash difference method is one of the most compelling methods in the collection of methods. There is really just a hand full here and there that I actually find myself using, and even then I could just use a custom tailored utility library that is in tune with the project itself.