@programminginc - страница 2557

Anonymous

I want to write a program to compute area of triangle using pointer

So write it

Obama

So write it

Help me, I don't know how to write it, I need assistance

MilkBeforeCereal

For humans only

smol pp moment

MilkBeforeCereal

tf is calculating a polynomial lol

Anonymous

Help me, I don't know how to write it, I need assistance

Your statement is similar to "Help me, i don't know how to pay taxes, I need assistance" It's not an attitude you should live with You can ask a specific question here but asking to "assist" you or writing program for you is forbidden

J

wow, what kind of stupid elitist horse shit is that?

Boryan

Hello👋 I want a tiny consultation. I've got a table of float values with column titles from csv file and used to store its as follows: vector <string>hat (due to column order in file) hash<string, vector<float>> dat and make all itarative process through hat. So I want to know, maybe my way is not an efficient(or even bad) and how other people store those structers in programms.

J

what is your way? how are you processing the file? how are you creating and populating the vectors and hashes?

Alex

Hello👋 I want a tiny consultation. I've got a table of float values with column titles from csv file and used to store its as follows: vector <string>hat (due to column order in file) hash<string, vector<float>> dat and make all itarative process through hat. So I want to know, maybe my way is not an efficient(or even bad) and how other people store those structers in programms.

struct order_t { string column_name; unsigned int order_id; } you can use map<order_t, vector<float» instead of two containers

Pavel

Hello👋 I want a tiny consultation. I've got a table of float values with column titles from csv file and used to store its as follows: vector <string>hat (due to column order in file) hash<string, vector<float>> dat and make all itarative process through hat. So I want to know, maybe my way is not an efficient(or even bad) and how other people store those structers in programms.

It all depends on how you work with you data. If you need to iterate through the values of one hat often, then it looks fine. Also if you think that your solution is slow, you can try to make a test with a lot of data and run it under profiler to see what takes the time

Boryan

what is your way? how are you processing the file? how are you creating and populating the vectors and hashes?

I split each line until atEnd(), convert each line element to double and put it in dat dat[hat[I]] << ((ok)? splittedLine[j].toDouble() : nan(), j = 0, hat.size()

J

what did you expect to happen?

Alex

create another identifier more than 31 chars, with common first 31 chars

J

no. read again.

J

the 31 char limit applies to internal identifiers

J

also, forget that limit. that's some shit straight out of 1982

Boryan

struct order_t { string column_name; unsigned int order_id; } you can use map<order_t, vector<float» instead of two containers

Thank you👍

J

I split each line until atEnd(), convert each line element to double and put it in dat dat[hat[I]] << ((ok)? splittedLine[j].toDouble() : nan(), j = 0, hat.size()

okay, so, you've just hand-rolled a pseudo-parser. that's not how you would do it if you're intending to work with actual csv documents. depending on your goal, it may be sufficient though.

J

take a look at this, as an example: https://github.com/d99kris/rapidcsv

J

warning flags enabled? pre-historic standard compliance flags turned on?

J

is your compiler from the 80s?

J

that's the standards mandated minimum significant character count. no compiler in practice actually works at those limits, except maybe "your grand-dad's borland™"

J

hmm... i see it's an IDE app for phones, but i dont see what it calls for the compiler (i dont think androiden comes with pre-installed compilers, which would be super hilarious)

J

maybe it's some fork of clang/llvm that they redistribute. you'd need to find that out first. but defo try the flags first. you're effectively testing the compiler for standard compliance at that point tho

J

if you're feeling extra adventurous - you can maybe grab feature tests from another compiler (gcc, clang) and try building them with that cppdroid compiler. see if it understands all the features.

Garvine

Who has an idea of how you can generate one random number between 1 and 500 using a function then that number should be passed to another function to check if it is prime or not.

J

Who has an idea of how you can generate one random number between 1 and 500 using a function then that number should be passed to another function to check if it is prime or not.

like this, srand(my_turbo_seed) while (true) { int r = rand() % 500 + 1; if (is_my_number_prime(r) == true) break; else /* churn */; }

Garvine

I had thought about the rand function too Thanks 👍😊

Dark

This be a stupid question but I have been looking on google for an answer for 4 hours and got nothing. My problem: I have a CreateWindowW() And I need to change the size of the Window. But I can’t for the life of me

J

are you talking about the Windows API function?

J

https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-createwindoww void CreateWindowW( lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam );