C# lambda - curry usecases

Question

I read This article and i found it interesting.

To sum it up for those who don\'t want to read the entire post. The author implements a higher order function named Curry

Answer 1

here's another example of how you might use a Curry function. Depending on some condition (e.g. day of week) you could decide what archive policy to apply before updating a file.

    void ArchiveAndUpdate(string[] files)
    {
        Func archiveCurry1 = (file) =>
            Archive1(file, "archiveDir", 30, 20000000, new[] { ".tmp", ".log" });

        Func archiveCurry2 = (file) =>
            Archive2("netoworkServer", "admin", "nimda", new FileInfo(file));

        Func archvieCurry3 = (file) => true;

        // backup locally before updating
        UpdateFiles(files, archiveCurry1);

        // OR backup to network before updating
        UpdateFiles(files, archiveCurry2);

        // OR do nothing before updating
        UpdateFiles(files, archvieCurry3);
    }

    void UpdateFiles(string[] files, Func archiveCurry)
    {
        foreach (var file in files)
        {
            if (archiveCurry(file))
            {
                // update file //
            }
        }
    }

    bool Archive1(string fileName, string archiveDir, 
        int maxAgeInDays, long maxSize, string[] excludedTypes)
    {
        // backup to local disk
        return true;
    }

    bool Archive2(string sereverName, string username, 
        string password, FileInfo fileToArchvie)
    {
        // backup to network
        return true;
    }