Ignoring the fact that elements are copied in range loops
Range is the form of for loop that iterates over a slice or map. We may forget or be unaware of how a range loop assigns values, leading to common mistakes. First, let’s remind ourselves how to use a range loop; then we’ll look at how values are assigned. Concepts A range loop allows iterating…
Konika SitoulaNever using named result paramater
In Go return or result parameters can have a named parameter. Having a named parameter eliminates the necessity of having a variable name along with a return parameter as the user can only use a return keyboard to return the result. When a result parameter is named, it’s initialized to its zero value when the…
Using a filename as a function input
While creating a new function that reads the file, passing the filename as an argument is not considered best practice and might have negative effects such as making it difficult to write test cases for a variety of criteria. Suppose we want to implement a function to count the number of empty lines in a…
Ignoring how defer arguments are evaluated
In order to understand how arguments are processed using the defer keyword, let’s consider a specific example. Suppose we have a function that needs to execute two other functions, called foo and bar. Additionally, this function needs to handle some status information related to its execution. We can use the defer keyword to ensure that…
Using defer inside a loop
The defer keyword allows a function call to be postponed until the surrounding function has completed execution. This can be useful for reducing redundancy in code, such as when a resource needs to be closed after use. However, it’s important to be mindful of using defer within a loop, as it can have unintended consequences…
Thinking concurrency is always faster
Many developers mistakenly believe that a concurrent solution will always be faster than a sequential one, but this is not always the case. The performance of a solution depends on various factors, such as the efficiency of the concurrency structure, the parts that can be processed in parallel, and the level of contention among the…
Stripe Payment with Golang
In this blog post, I will discussed on the topic of stripe payment integration with Golang. Before that i will give brief introduction about this and move head to simple implementation. It is a famous payment gateway that helps in financial transaction between merchants and customers. It accepts 133+ countries currency. It is a powerful…
Not properly checking if a slice is empty
In the previous blog post we discussed about distinction between nil and empty slices. We have to clear about some notation, what is the idiomatic way to check if a slice contains elements? Not having clear answer can lead to subtle bugs. Let’s talk about the example, we call a getAmounts() function which returns a slice…
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