I recently came across with this awesome IDE, Juno for Julia. I have setup the IDE properly and it is successfully connecting to Julia. However, I'm facing with a small problem: How am I supposed to get data from STDIN in Juno using say, readline(STDIN)?
Appreciated!
Lighttable / Juno doesn't supply an input console. But the Julia REPL (command line version) does. I find it best to have both open. In asyncronous mode you can put trow-away code, shell commands (";") and command help ("?") in REPL and keep-code in Juno, and they share variables. You just can't run async in this case, since you want Juno to stop and wait.
On Windows default setting, you need to Evaluation -> Kill Julia
and then Ctrl+Space -> Julia: Connect to a running session. Leave out just '#async' when you want to wait for input.
If there is a better way already, I'd like to know too. Source: http://discuss.junolab.org/t/how-to-read-user-input-for-julia/110
Related
I am using Julia 1.8.4 in Jupyter, however, I get the following error message when I start it up.
[code_prettify] Sorry, can't use kernel language julia.
Configurations are currently only defined for the following languages: python, r, javascript
See readme for more details.
If I click "Ok", I am able to run the code in the cells but Jupyter does not highlight Julia code. It continues highlighting Python code and syntax. Is there a way I can fix this?
Or could someone refer me to the documentation?
Like the error message indicates, code_prettify only has configurations inbuilt for Python, Javascript, and R. From the docs:
Example implementations are provided for prettifiers for ipython, ir and ijavascript kernels which should work out of the box ...
Other languages may be added as defaults in the future
Support for Julia is yet to be added, hence the error message.
That said, code_prettify is only needed if you want to reformat your code (semi-)automatically. Syntax highlighting should work regardless, without any extension, and based on my testing, it does. Loading a notebook with a Julia kernel, the error message appears in the console, but the code is syntax-highlighted as usual.
So, if the syntax highlighting problem persists across notebook restarts, the issue must be with some other part of your notebook setup.
I've had trouble using Julia in Windows Terminal for the last few releases because the ANSI escapes refuse to render properly unless I enable Legacy Console Mode which helps in CMD prompts, but not in Windows Terminal.
When launched in Terminal, it looks like this:
When launched with --color=no, it looks like this:
Which is marginally more useful, but both the inputs and outputs are muddled by the ANSI escapes, which makes the REPL effectively useless.
My workaround has been to enable the "Legacy Console" and use an alias to launch julia in a separate CMD-based window when I need REPL functionality, but this is disruptive.
I have tried various combinations of (multiple releases of) Windows Terminal (stable and dev), Powershell (stable and dev), and Legacy Console mode. There must be a configuration issue on my machine that I just can't nail down because no one else seems to have this issue.
What am I missing?
Can you file this over at https://github.com/microsoft/terminal/issues?
By all accounts, this should work. Seeing the literal escapes in the buffer like that makes me think that Julia isn't enabling ENABLE_VIRTUAL_TERMINAL_PROCESSING, which they would need for escape sequences to work. Though, if you're on a version of julia from 2021, I would presume that they're aware of that and would be setting that mode by now. (That flag was added in like, 2016)
Hopefully we can help diagnose more over at the Terminal repo ☺️
Start to learn Julia recently. And do not want to use console ever.
How can I install a new package from IDE, with no use of console commands? I'm using Juno, but I'm opened to change IDE if Juno does not support such a feature. Than the question is - what IDE does?
You can evaluate commands from a script. Just type Pkg.add into a script and Ctrl+Enter on it. But I don't think avoiding the console entirely is a good way to program though!
Write a script
Pkg.add("Distributions")
and run it.
Using atom-editor 1.13 with the love-ide package installed to run LOVE2d 10.2 games (windows 7)
Apparently if you create a conf.lua file in the same folder as your main.lua file you can add some configuations to main.lua. So, I've got these lines of code in my conf.lua to show console.
function love.conf(t)
t.console = true
end
But when I go back to my main.lua and type print("ballz"), all I see is a blank LOVE2d game screen with no extra console window. Not really sure if this is because I'm using atom editor or not. Everything seems to be PATH'ed correctly.
On a side note, whenever I run atom using the love-ide package it always tries to install some "dependecy files" like the hyperclick-love package, and the auto-complete-love package. These fail to install because I don't have git installed.. honestly I really don't know what git is, but neither it, hyperclick, or auto-complete seemed like requirements to run my game, so in the spirit of not installing unnecessary things onto my computer I never installed these things... annoying as it is to see this notification always pop up when I start atom. Anyone know if this is contributing to the issue, or know a way to remove these notifications or auto-download-attempts? My LOVE2d code still seems to run without these packages.
Have you set up the terminal emulator in your configuration?
(Windows only) Try using the lovec.exe executable instead of the normal love.exe. The first one attaches to the console that executed the game, the second one ignores it.
Lua has a buffered output, try adding io.stdout:setvbuf('no') to the top of main.lua
In another question:
Juno IDE for Julia, how to interact?
One of the answers stated:
You can't enter commands into the console in Juno--that's for displaying output. Commands can be submitted from within the editor by setting your cursor in the line to submit and pressing Ctrl+Enter or Shift+Enter. The value will then be displayed in a small popup next to the line and the output will be printed to the console if you have the console visible.
Note that the inability to use the console as you desire is by design. See here for information about the console from the Juno docs.
I am encountering an issue that might make this design decision a bit impractical at times.
First, let me say that I am new to Julia and Juno (not to coding, just trying to learn Julia now), so there might be a way to fix this and I do not know about it.
I am using the package RCall, that allows to include R code into Julia, so I am trying to install some R packages. One of the packages is asking me a "y/n:" question and I cannot answer it because I cannot access the console, and sending code from the editor to the console using command+Enter is blocked (because the console line is executing).
To reproduce this issue (note that R 3.2.0 or above needs to be installed, and I had to restart Juno after installing RCall for it to work):
Pkg.add("RCall")
Pkg.build("RCall")
restart Juno
using RCall
reval("install.packages(\"rgdal\")")
A pop-up will appear asking to select a mirror, just choose 0 and OK. Then the package is asking me if I want to install some dependencies "y/n:" and the whole execution is blocked.
I guess that this can be fixed just by using Julia from the command line (and forgetting about Juno), but I like to use IDEs.
Do you have any ideas about how to circumvent this issue? or another IDE for Julia?