Unanswered Questions
3,173 questions with no upvoted or accepted answers
4
votes
1
answer
235
views
Functions returning a value?
I'm trying to implement multi-dimensional arrays in Scratch, for an implementation of maze generation.
To simplify, I'd like to implement a couple of custom blocks which return a value, e.g. ...
CommunityBot
- 1
3
votes
1
answer
2k
views
pset 4 : filter - Could not open .bmp file
I have a trivial question.
Starting the pset with freshly downloaded and unchanged code and trying to pass a file with ./filter -g yard.bmp out.bmp yields : Could not open yard.bmp.
I wrote a simple ...
CommunityBot
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3
votes
0
answers
1k
views
How to call the usd function in the jinja template of quoted.html?
I want to display the cost of the share in Quote tab using the "usd" function defined in helpers.py.
I've tried adding app.jinja_env.globals.update(usd=usd)in application.py and then calling the ...
3
votes
1
answer
64
views
Google Earth frame is displayed in front of javascript alerts
When I click start engine in the right rail of the application, an alert is displayed behind the Google Earth frame of the Harvard Yard.
I cannot click on any items that are displayed on this alert, ...
CommunityBot
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2
votes
1
answer
48
views
What is the usage of creating DICTIONARY_H in pset5?
I cann't understand when to use the preprocessor directives as (ifndef, define ,etc.)? In dictionary.h, what is the importance of writing those statements? and regarding the reason that was mentioned ...
CommunityBot
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2
votes
0
answers
56
views
Students only passing 4/6 the last two showing concatnation error but works locally somebody help
[33mTraceback (most recent call last):[0m
[33mFile "roster.py", line 34, in
main()[0m
[33mFile "roster.py", line 27, in main
print(row[0] + " " + row[1]+" "+ ...
- 33
2
votes
0
answers
611
views
CS50 - PSET2 - Substitution Segmentation fault
I keep getting 'Segmentation fault' every time I run the code(mentioned below). The code is compiling just fine. It's asking for input and is returning required message when the command line argument ...
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2
votes
2
answers
2k
views
Unable to pip install submit50
Following CS50 Game development.
Trying to submit my assignment, i have python 3.8 installed.
while pip installing, I received following error message:
("submit50 does not support Windows directly. ...
CommunityBot
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2
votes
0
answers
284
views
View README.md in CS50 IDE?
I've created my README.md file for my final project. I'd like to check how it looks before submitting. How can I "preview" markup files in the CS50 IDE?
- 185
2
votes
0
answers
491
views
OSError: [Errno 99] Cannot assign requested address in pset7 2019
I am trying to send email via my server to the persons who have done their registration. Their information is getting stored in database( csv file) but when I click on submit button, nothing loads and ...
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2
votes
1
answer
282
views
CS50 2019 PSET8 updating API from 2017 API
I have a lot of work from finance 2017, but it seems to use a different API than what I used last year. How do I update my code to use this new API? Or can I just use the one from last year? (I don't ...
CommunityBot
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2
votes
2
answers
569
views
Compiler Can't locate CS50 library locally
I'm trying to work on my C psets on my local machine in vscode. I've installed the cs50 library locally but am having trouble compiling. OS is osx 10.14.3
The error I'm receiving when compiling with ...
CommunityBot
- 1
2
votes
1
answer
100
views
Problem with running docker toolbox on windows
Please I need help. I've been searching all over the net and topics on how to run IDE offline on my windows 10, I've downloaded it but when I run it following the several instructions, I keep getting ...
CommunityBot
- 1
2
votes
1
answer
87
views
Why do cs50/2018/x/speller, cs50/2018/x/mashup show looks good but give 4 / 5 for style?
I have run update50 and I'm still not seeing any style errors but I'm still getting 95% and 4/5 for style?
CommunityBot
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2
votes
0
answers
463
views
I don't understand the meta tag "shrink-to-fit=no"
I read so much about this tag, but I'm a little confuse still. This is one of the post and here is another when I read about the subject.
What I understand is that the pages were written first with ...
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