5
votes
Problem with query quotes from Yahoo finance
Thank Brenda Anderson from Facebook group CS50 for providing a new code for helpers.py
2
votes
Accepted
Alternative to multiple if statements?
You can refactor your code to use only one if statement!
Think about the number of MIME types you have to check for, and the number of matching file extensions.
Since there are the same number of ...
- 3,050
2
votes
Accepted
Pset6 one check50 error
It's a common problem when abs_path and query are built one character at a time. The problem seems to be in parse. abs_path (and query) are not properly null-terminated. So server returns a 404 error ...
- 28.6k
2
votes
Accepted
(PSET6) hello.php always displays hello, hello, world regardless of input?
The "weird" results you report
For some reason, if I alter the order in which the file extensions are searched, cat.html suddenly doesn't load.
is the "unpredictable results" that happen when ...
- 28.6k
2
votes
Accepted
Finance index function does not return lookup value in index.html
Each dict in portfolio contains 3 keys as returned from the execute. There is no key current_price, so the html does not render anything for that column. If the key gets created in the for loop in ...
- 28.6k
2
votes
Problem with query quotes from Yahoo finance
Yahoo finance has killed it's API
You can read more about the topic via the Hacker News discussion linked below.
https://news.ycombinator.com/item?id=15616880
- 31
1
vote
Accepted
Why does my lookup function keep returning "None"?
Since the quote spec calls for an element named "symbol", and this if not request.form.get("stock"): is apparently working, it looks like the element is not named properly in the ...
- 28.6k
1
vote
Accepted
Pset 9 Finance index function, current stock price not displaying correctly
The problem isn't lookup. The problem is portfolio. There are exactly two keys in the portfolio dictionary, "current_price" and "holding_total". They are set to the values in each ...
- 28.6k
1
vote
CS50 Finance lookup function always returns NONE
OK, i am just dumbo, i used my API token without last character
- 11
1
vote
Scramble.c lookup function found flag
A few things. Valid indexes would probably range from 0 to size-1, and as you chose your interval boundaries as both being part of the interval, your initial interval end should include the -1, to ...
- 21k
1
vote
Accepted
PSET7 Finance Question Quote Lookup Page
One problem is here <form action="/quote.html" method="post">. There is not a quote.html in document root (it is in subdir templates), thus the 404. But do you really want the form action to be ...
- 28.6k
1
vote
scramble lookup function
dictionary contains an array of words and each of those words contain an array of letters. So dictionary.words[0].letters would represent the first word in the dictionary.
You're on the right track,...
- 18.7k
1
vote
Accepted
PSET6 Lookup - Read-Only Variable As Well As How to Approach
When you use that keyword const, you're promising your compiler that you won't change the contents of what's inside the array. That's why the compiler yells... because you're trying to change it here ...
- 2,595
1
vote
Accepted
Need help with pset6, lookup and parse function!
char* s = strrchr(path, '.');
as I understand strrchr returns a pointer to point '.', hence the string s would be something like ".css" for example, on the other hand strcmp, compares two string, to ...
- 5,179
1
vote
Accepted
Why Pset6 check cat.exe and non-existant file going wrong?
First suggest you send a request to server from browser or curl. You will discover that server seg faults. (That's what this \ expected output, not an exit code of 0 feedback from check50 indicates).
...
- 28.6k
1
vote
Accepted
pset 6 server - Load produces inconsistent results
for (char read = fgetc(file); read != EOF; read = fgetc(file)). read cannot be a char. Because of internal casting in fgetc, this can return a "false eof", and almost always does on binary (image) ...
- 28.6k
1
vote
Accepted
PSET6 check50 server1 cat.exe and non-existant file return error 505
server should return 505 in exactly one place, from the parse function http version check. That means that strcmp(HTTP_version, "HTTP/1.1") does not return 0. That means that HTTP_version is not "HTTP/...
- 28.6k
1
vote
Accepted
pset6 server.c 403 forbidden for "/", problems for lookup and indexes
Hint: This line in indexes if (access(phpcheck, F_OK)) (and the other access) is wrong.
Suggestion: Read man access. Pay special attention to the RETURN section. access returns an int. Treat it like ...
- 28.6k
1
vote
Pset6 check50 server1 parse error
I inserted your program in this parse.c to debug it:
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <cs50.h>
#define LimitRequestLine 8190
bool parse(...
1
vote
Pset6 check50 server1 parse error
Since there are only two places in server.c that return a 505, and they are both in this parse function, that's a good place to start looking.
debug50 or gdb (tips here) would be perfect tools to ...
- 28.6k
1
vote
pset6 server fails check50
First of all, WOW: your code is awesome.
I took LOOKUP on the side and I could not see any obvious errors.
I did find some behaviors on PARSE you might find useful.
This is how I debugged your ...
1
vote
pset6 server fails check50
There are some problems that are quick to see. They are most likely not all the problems in play here.
parse
The server1 failure probably stems from here strncpy(request, req_pos, (v_pos - req_pos -...
- 28.6k
1
vote
Accepted
pset6: requesting php from within html isn't working
Since those are the only two tests that fail check50, redirect your attention to how query is built in parse. Since hello.php "works fine", verify that query is properly null-terminated. A helpful ...
- 28.6k
1
vote
Accepted
Pset6 - check50 missing cat.exe and non-existant file request
strcasecmp is meant for comparing string without caring about capitalization. Comparing twice, with different capitalizations is not really useful here.
The reason why you are getting the 505 HTTP ...
- 309
1
vote
Accepted
Problem with check50 for server1
There's only one place that server returns a 505, and that is from your parse function. Your server is never even getting to lookup. This guy if (strcmp(word, "HTTP/1.1") != 0) is always evaluating to ...
- 28.6k
Only top scored, non community-wiki answers of a minimum length are eligible