Haskell : display/get list of all user defined functions

Question

Is there a command in Haskell which displays (or get as a list of) all the user defined functions which have been loaded/defined in the GHCi? Thanks

Sullivan

Answer 1

To see bindings you've made at the ghci prompt (e.g. with let or <-), try :show bindings.

If you've loaded some modules, you can use :show modules to get the names of loaded modules and then :browse ModuleName to list everything in scope from that module.

Thyroiditis

Hi, I tried that but it did not work for me. I am using WinGHCi and I loaded the functions via the ':load' function as outlined in the post Haskell : loading ALL files in current directory path. However when I try ':show bindings' it just says 'it :: Int = 7' because I invoked 'addNumber2 3 4' last. Thanks – Sullivan

I edited in instructions for what you do if there are modules. – Thyroiditis

Hi, :browse requires knowledge of which module has been loaded. Is there a way of doing this without requiring knowledge of which modules have been loaded? (see also comment below). Thanks. – Sullivan

I don't think so, unless you can parse the output of :show modules. – Thyroiditis

Answer 2

When in ghci, use :browse or just :bro after loading the file. You may also browse unloaded modules via :browse Foo.Bar.Baz.

Chappelka

:br now resolves to :break, for browsing, you need :bro. – Carrera

:dawg should be a ghci synonym for :bro – Decimal

Hi I tried this, but in WinGHCi ':browse' does nothing! I loaded the files as outlined in the post Haskell : loading ALL files in current directory path – Sullivan

Did you try :browse ModuleName? – Thyroiditis

Ah I didnt realise that you have to specify the module name. But suppose I have scripts to load different modules. Then is there a way to see all the functions which have been loaded from the various modules, without requiring knowledge of which modules have been loaded? Thanks – Sullivan

@Sullivan In ghci, :browse with no arguments shows the bindings defined in the currently loaded module(s). Perhaps you should upgrade from hugs. =) – Chappelka