Sorting by Functions
This Go code showcases the use of a custom sorting package named "slices" along with a comparison package "cmp" to perform sorting on slices. It demonstrates the flexibility of custom sorting by providing a comparison function.
Let's go through the code with inline comments and explanations:
Output
Now, let's discuss the slices
package and the use of SortFunc
:
slices.SortFunc(slice interface{}, less func(i, j int) int)
This function takes a slice of any type (interface{}) and a custom comparison function
less
.The comparison function is used to determine the order of elements in the slice.
The sorting is performed in-place, modifying the original slice.
The main
function demonstrates the use of SortFunc
with both a string slice (fruits
) and a slice of custom type (people
). It shows how to provide a custom comparison function (lenCmp
for strings and an anonymous function for Person
instances) to achieve sorting based on specific criteria.
Make sure that the slices
and cmp
packages are implemented correctly and are available in the same directory or in the Go module path for this program to work. The import "slices"
and import "cmp"
statements assume that there are files named slices.go
and cmp.go
containing the respective packages in the same directory as your main program.
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