Today I will teached you Understanding the Differences Between Closely Coupled and Loosely Coupled Code. You can write two types of code in software development: tightly connected code and loosely coupled code. Closely connected code implies that your program’s modules are interdependent, and that changes in one module necessitate changes in others.
Differences Between Closely Coupled and Loosely Coupled Code
Loosely linked code, on the other hand, allows one module to run independently of the others and can be updated without damaging dependent modules. Close coupling, on the other hand, has its benefits, so let’s look at the distinctions between tightly linked and loosely coupled code so you can make the best decision when writing your programmes.
What is Closely Coupled Code?
I saw many of the users don’t know meaning of this and there differences. I would like to post it here for the users. Basically, closely coupled code means that one part of the code is strongly dependent upon another part.
This means that any change in one part may have unforeseen/unwanted effects on another part. Now, on other hand what is loosely coupled code? e.g. when you use “global” within a function, you then closely couple that function to whatever it is that initially defines that variable. If for some reason that other part of the code is changed to rename that variable or do things you didn’t anticipate, it might break that function.
Likewise, you might not realize that the function is doing things to that variable, causing unforeseen bugs in the application. And of course it becomes difficult to re-use such a function in another context if that same variable name does not exist there and have the same meaning/usage.
What is Loosely Coupled Code?
If you’re wondering what loosely coupled code is, you’re not alone. Many people are baffled by it—and frustrated to know that loosely coupled code isn’t just another phrase for good software design. Instead, loosely coupled code describes how components in a program communicate with each other. Specifically, components are closely coupled when they have to talk too much—when they have to interact with each other more than is ideal or necessary.
This problem usually happens because of tight coupling between classes within a single project—or within individual files. In either case, closely coupled code makes it difficult for developers to reuse different pieces of software independently or test them separately. Ideally, loosely coupled code allows for separate parts of the application to not have that strong dependency on other parts.
This has a number of benefits, such as keeping bugs isolated to one area of the code (instead of having cascading effects throughout the code) and it makes it easier to re-use portions of the code.
Identifying Tight vs. Loosely Coupled Code
Like most software engineering principles, you don’t know these two terms until you run into a problem they solve. For example, code smells are basically signs that your code is probably a good candidate for some refactoring. In short, if your code smells then there’s likely a simpler way to write it. Understanding when something should be tightly coupled and when it should be loosely coupled will help inform your design decisions and help keep your code clean in general.
How can you identify tightly coupled code?
Tightly coupled code is often harder to understand because of how its functionality is tied together. We can identify tightly coupled code by taking note of where variables are used within our functions. A variable is considered used if it appears on either side of an equals sign (i.e., inside a function, or being passed into or returned from a function).
If your average function looks like a bunch of one-liners with a few variables sprinkled in between, your code may be too tightly coupled. One way to address this issue is by creating functions that perform more than one action in order to separate out different parts of your program into individual tasks. This will make understanding each task much easier, especially when debugging or troubleshooting bugs later on.
Tips for fixing tight coupling
Because coding styles are always changing, there’s no foolproof way to avoid tight coupling. However, there are a few precautions you can take to help prevent it from happening. For example, instead of making methods that rely on calls to other obje need to change their behavior in any way (as is likely in fast-moving software development), you can do scts part of your public interface, make them private or protected members of your class.
Then, if youo without causing a ripple effect throughout your application. You might also try introducing abstract classes and interfaces into your code whenever possible; these elements force some degree of decoupling between various code modules.