Month: September 2022

[Solved] Extracting string from text [closed]

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Not the most elegant solution but this should work #include <iostream> #include <vector> #include <string> #include <sstream> using namespace std; vector<string> split(string str, char delimiter) { vector<string> internal; stringstream ss(str); string tok; while(getline(ss, tok, delimiter)) { internal.push_back(tok); } return internal; } int main(int argc, char **argv) { string str = “My name is bob.I am … Read more

[Solved] Error multiple definition when compiling using headers [closed]

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Do not mix declaration with definition/instantiation in a .h file. Your are instantiating g_font, g_window and g_renderer in isolation.h file. The correct is instantiating only once, usually, in a .cpp To solve your problem, change isolation.h to declare those variables as external linkage: //load global front extern TTF_Font* g_font; //window extern SDL_Window* g_window; //renderer extern … Read more

[Solved] Python Cannot find file although the error says it exists

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Seems like you are using windows. Windows directory separator is \ not / try this way: df=pd.read_csv(‘C:\\Users\\user\\Desktop\\Work\\a.csv’) or import os file_path = os.path.sep.join([“C:”, “Users”, “user”, “Desktop”, “Work”, “a.csv”]) df = pd.read_csv(file_path) solved Python Cannot find file although the error says it exists

[Solved] How to use fflush in c on OS/X [closed]

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Calling fflush(stdin); invokes undefined behavior. You should not use this to flush characters from the standard input buffer. Instead, you can read the characters upto the next linefeed and ignore them: int c; while ((c = getchar()) != EOF && c != ‘\n’) continue; You can also use scanf() for this, but it is tricky: … Read more

[Solved] Mysql sort BY number of filled columns [closed]

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If the empty fields have NULL value, you can use SELECT * FROM sometable ORDER BY ISNULL(price_1) + ISNULL(price_2) + ISNULL(price_3) DESC; But a more sensible solution would be: You have one table, which contains the products You have another table, which contains the product’s ID, the price and a value which indicates which website … Read more

[Solved] Extract Log file value

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I think you can do it using a positive lookahead until you encounter INFO or DEBUG or WARN. ERROR[\S\s]*?(?=\s+INFO|DEBUG|WARN) Match ERROR Match any whitespace character or any non-whitespace character zero or more times non greedy [\S\s]* A positive lookahead (?= Assert that what follows is one or more whitespaces \s+ Followed by either INFO or … Read more

[Solved] Using struct to display military time and add one second to user input (C++)

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Here are some issues I found. 1. Don’t use struct when referring to variable types. Incorrect: void getTime(struct Time *time) Correct: void getTime(Time * time) Pass by reference, not pointer:void getTime(Time& time) You need to use either . syntax to refer to members or ->:cin >> time->hours; // if passed by pointer.cin >> time.hours; // … Read more

[Solved] make 1 full container in left and half and half container in right [closed]

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Here something that can give you a start: .container { display: flex; width: 100%; justify-content: center; height: 15em; } .row { width: 50%; } .left { background: red; } .right { background: yellow; } .right div { height: 50%; display: flex; justify-content: center; align-items: center; } .right div:nth-of-type(1) { background: blue; } <div class=”container”> <div … Read more