tryhaskell | Try Haskell at tryhaskell | Functional Programming library
kandi X-RAY | tryhaskell Summary
kandi X-RAY | tryhaskell Summary
Try Haskell
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Handle command results
- executed when user entered text is finished
- Display prompt text to prompt .
- Rotate the history text .
- Delete a word
- Update the user list
- Handle command .
- Display result in progress
- Create a new prompt box .
- Find previous word .
tryhaskell Key Features
tryhaskell Examples and Code Snippets
Community Discussions
Trending Discussions on tryhaskell
QUESTION
When I use GHCi commands (i.e. any command starting with ":"
for example :set +t
) on https://tryhaskell.org/ I get an error:
:1:1: parse error on input ‘:’
According to the documentation of GHCi this should work, but I cannot find much information about it.
I've tried a few other online "repls" as well.
...ANSWER
Answered 2021-Oct-13 at 16:24That repl probably doesn't try to provide all of GHCI's functionality. It probably wants to be stateless, so it just evaluates expressions one at a time. No variable definitions, no interacting with GHCI any other way, e.g. through :t
. If you install GHCI yourself, you will have a functioning repl. Or, if you want an online repl, https://replit.com/languages/haskell seems to work fine for me.
QUESTION
I just installed Stack GHCI and Visual Studio Code in my Windows. And I was trying to build and run the first simple Haskell putStrln programme, but with a big compile fail.
In VS Code terminal, I entered:
PS C:\Users\rmili\Documents> stack new TryHaskell
And a new folder "TryHaskell" was created, with the automatically created files "Lib.hs" and "Main.hs"
I tried to build and run the hs files. But I encountered the following errors:
- In a new terminal, after I entered
PS C:\Users\rmili\Documents\TryHaskell> stack build
, this will result in the following error:
ANSWER
Answered 2020-Sep-14 at 09:15Welcome to Haskell!
Unfortunately, it seems Haskell on Windows has various "permission denied" bugs. (https://gitlab.haskell.org/ghc/ghc/-/issues/2924). I have no direct workaround to suggest, other than make sure all software is up-to-date, try different configurations, and try and build using ghc
directly without stack
.
Other things to try include making sure you are running as Administrator, and disabling your antivirus.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install tryhaskell
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page