3 ms·

Longest and Shortest Type Name in .NET 4.0 using LINQ

• euroclydon 16y ago
  It would be pretty cool to try to instantiate each one, and then do a sizeof(instance) on it to see how large the memory footprint is.
  • daeken 16y ago
    If you only want the size of the object itself -- not the things it references -- then you don't actually need to instantiate them to know this. You can reflect on the fields of the type and calculate its memory footprint that way.
• DanielBMarkham 16y ago
  I love F#. Same code in F# (one line, of course!) let currentNetTypes = System.AppDomain.CurrentDomain.GetAssemblies() |> Seq.filter(fun x->x.FullName.Contains("Version=4.0.0.0")) |> Seq.map(fun x->x.GetExportedTypes()) |> Seq.concat |> Seq.sortBy(fun x->x.Name.Length);; To me this reads easier, but I admit to a biased opinion :)
  • MichaelGG 16y ago
    The only thing I'm not overly fond of is the repeated "fun x -> x". It'd be nice if there was a way to refer to members without an instance reference. So you could write: Seq.map ($GetExportedTypes()) |> Seq.sortBy $x.Name.Length Where $ is some special syntax to indicate "generate a function that uses its parameter as the this parameter for the instance call". I think this has been brought up but perhaps a nice syntax hasn't been found?
    • daeken 16y ago
      In Nemerle (another ML dialect for .NET), you can use _ to that end. Syntax for local functions/lambdas, all equivalent (but suited for different situations, syntactically speaking): def foo(x) { x + 5 } fun(x) { x + 5} (x) => x + 5 lambda x -> x + 5 _ + 5 I find I miss the _ syntax more than most syntactical sugar. I don't know how often I have to write things like lambda x: x.foo in Python, where _.foo would serve the same purpose.
  • daeken 16y ago
    Or in IronPython: currentNetTypes = sorted( sum( list(asm.getExportedTypes()) for asm in System.AppDomain.CurrentDomain.GetAssemblies() if 'Version=4.0.0.0' in asm.FullName), lambda a, b: cmp(len(a.Name), len(b.Name)) ) Clean, but I love how the |> operator in F# serves to flatten code like this.
  • noblethrasher 16y ago
    C# in one line (though I do love F#) var currentNetTypes = from a in System.AppDomain.CurrentDomain.GetAssemblies() from y in a.GetExportedTypes() where a.FullName.Contains("Version=4.0.0.0") orderby y.Name.Length select y; Or possibly: var currentNetTypes = from a in System.AppDomain.CurrentDomain.GetAssemblies() .Where(x => x.FullName.Contains("Version=4.0.0.0")) from y in a.GetExportedTypes() orderby y.Name.Length select y;