albums[:i]creates a new slice that contains all the existing elements up to the element to remove, andalbums[i+1:]creates a new slice that contains all the existing elements up to the element that has to be removed....is used to unpack elements of the slice i.e. expand elements of a collection (slice, array or iterable) into individual elements to a variadic parameter.
The * in gin.Context is used to denote a pointer type. A pointer in Go is a variable that holds the memory address of another value. It allows you to indirectly access and modify the value that it points to.
func myHandler(c *gin.Context) {
// Accessing the request and response using the context
request := c.Request
response := c.Writer
// Modifying the context's data
c.Set("key", "value")
// Handling the request and generating a response
c.JSON(http.StatusOK, gin.H{"message": "Hello, World!"})
}
It represents a pointer to the gin.Context object. Pointers in Go are commonly used to avoid copying large objects when passing them between functions or modifying them within a function. Thus, by using a pointer you can modify the context and its underlying data, such as setting response headers, accessing request parameters or binding JSON data.