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<greghendershott>
rudybot: later tell ZombieChicken Although I don't know what's going on the answer might be in the appendix G.2 about Microsoft Windows and section 22.5 Coding Systems
<rudybot>
greghendershott: I asked `MemoServ' to forward the message to ZombieChicken.
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<sandersantema>
Hi there, this might be a bit of a longshot but I'm learning racket and I'd like to have syntax highlighting of racket code inside of AnkiSRS, currently embedding pasterack pastes seem like a good option but I'd like to use it locally. Has anybody got any experience using pasterack locally or Anki to learn (the basics) of racket in general?
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<euhmeuh>
Isn't Anki a flashcard program for learning natural languages? If it works for you, it's fine, but I cannot see myself suggesting new learners to use flashcards and grinding in order to learn a programming language. It just doesn't work to learn programming by heart. It's a craft that requires experimentation, trial and errors, not just memorization. I'm not inherently against this, you're free to do whatever you please with your learning met
<euhmeuh>
Anyway to answer your question, I think you could take screenshots of pasterack and put them in Anki. Thaht would be the easiest method
<euhmeuh>
Or maybe just take screenshots of a running DrRacket
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<euhmeuh>
And I say that having used Anki for learning Japanese Kanji. Even for that, it doesn't work that good. Your brain learns to recognize the symbol by itself, or in the words you provide as examples, but when you get in the wild and try to read new words, you discover your brain is unable to recognize the exact same kanji you know already, because it's inside a word you don't know, or used in a context you don't know. The whole concept of "learn
<euhmeuh>
But I won't start a debate here, so I'll just shut up now :P
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<erkin>
What's the recommended way to add a right click menu to a window?
<erkin>
Extending window and overriding on-event to check for right click and spawning a popup-menu?
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<urbanslug>
Why contracts and not types?
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<dzoe>
You can use typed racker, if you will...
<dzoe>
*racket
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<jcowan>
Contracts are more flexible.
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<ZombieChicken>
I have a text file (Alice in Wonderland from Project Gutenberg) that is UTF-8 with CRLF line endings. I've a function that reads the file in line-by-line and stores it in a gvector, then another that takes said gvector and writes the contents back to the disk. When testing it, I noticed a few things I'd like some help in understanding
<ZombieChicken>
1) The original file didn't include a BOM at the start of the file, but the attempted duplicate had one
<ZombieChicken>
2) The line endings where all changed from CRLF to LF. I'm on a Linux system
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<lexi-lambda>
ZombieChicken: A few things. First, Racket automatically converts between CRLF and LF depending on system type if you open files in text mode. If you want to preserve of the original file as possible and don’t want any automatic conversions, you need to open the files in binary mode.
<ZombieChicken>
I was afraid that was the case
<ZombieChicken>
Does it change line-endings on load or on write?
<ZombieChicken>
s/on load/on read-in)
<lexi-lambda>
Both.
<ZombieChicken>
so I'd have to read in using binary, and write out using the same. Nice.
<lexi-lambda>
Just open the file in binary mode. If you’re treating it like binary data, which you are, text mode isn’t appropriate.
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<ZombieChicken>
which is, imo, a little counterintuitive
<lexi-lambda>
Maybe, but the whole point of text mode is that you want the runtime system to do some interpretation of the bytes on disk as text.
<lexi-lambda>
Normally, that’s what you want. But if you want to do a byte-for-byte copy, you shouldn’t be using text mode, and in fact, you probably shouldn’t even be reading the file in “lines”.
<ZombieChicken>
so replacing (read-line ...) with (read-bytes-line ...) should do it?
<lexi-lambda>
Well, no. You need to open both the input and output files in binary mode, so you need to pass 'binary to open-input-file and output-output-file, or any of the procedures that wrap it.
<ZombieChicken>
hmm
<lexi-lambda>
But that will get you part of the way. The other problem is that read-line and read-bytes-line strip the newline character(s), and the newline procedure just writes LF.
<ZombieChicken>
yeah
<lexi-lambda>
This makes sense: by default, read-line interprets either LF or CRLF as a “line ending,” so the procedures are fundamentally lossy.
<ZombieChicken>
looks like I'm oging to need (read-byte ...) and hope I can guess the line ending correctly
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<lexi-lambda>
You could keep using read-line, but pass 'linefeed as the second argument.
<ZombieChicken>
then figure out how I'd rather store things. Given I'm planning on doing modification via gvector-delete and gvector-insert, I don't think the immutability of list would be a problem
<lexi-lambda>
That way, it will only ever split on LF characters, and any CRs will still be in the read input.
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<ZombieChicken>
lexi-lambda: Doesn't Mac use CR as a line ending and thus that would break on those systems?