double sin(double x) Is a function declared in the math.h header. It can be used anywhere you’d like – in main() or in any other function you write that is called within main(). However, the way you show it called in main will not do anything useful. The sin() function takes a double as an … Read more
You can use jQuery‘s post(), an AJAX shorthand method to load data from the server using a HTTP POST request. Here’s an example to Post a form using ajax and put results in a div from their site: <form action=”https://stackoverflow.com/” id=”searchForm”> <input type=”text” name=”s” placeholder=”Search…”> <input type=”submit” value=”Search”> </form> <!– the result of the search … Read more
The term keep-alive means different things in the two contexts. The net/http Transport documentation uses the term to refer to persistent connections. A keep-alive or persistent connection is a connection that can be used for more than one HTTP transaction. The Transport.IdleConnTimeout field specifies how long the transport keeps an unused connection in the pool … Read more
public function pages($slug, PagesGenerator $pagesGenerator) { $output = $pagesGenerator->getPages($slug); // here is your error: $page is not defined. $id = $page->getId(); // something like this? $id = $output[‘page’]->getId(); return $this->render(‘list.html.twig’, [ ‘output’ => $output, ‘id’ => $id]); } solved How can I get access to service variables?
Use two dicts to do the mapping, one from letters to encryption_code and the reverse to decrypt: letters=”ABCDEFGHIJKLMNOPQRSTUVWXYZ” encryption_code=”LFWOAYUISVKMNXPBDCRJTQEGHZ” enc = dict(zip(letters,encryption_code)) dec = dict(zip(encryption_code, letters)) s = “HELLO WORLD” encr = “”.join([enc.get(ch, ch) for ch in s]) decr = “”.join([dec.get(ch, ch) for ch in encr]) print(encr) print(decr) Output: IAMMP EPCMO HELLO WORLD Using your … Read more
You can use a string comprehension: numbers = [float(p.replace(‘€’,”).replace(‘M’,”)) for p in a] which gives: [110.5, 210.5, 310.5] solved Can i include multiple statements when creating a one-line for loop?
If you want to enter data per line, here is an example: class Book { int number; int year; std::string language std::string name; std::string title; public: friend std::istream& operator>>(std::istream& input, Book& b); //… }; std::istream& operator>>(std::istream& input, Book& b) { std::string text_line; std::getline(input, text_line); std::istringstream text_stream(text_line); text_stream >> b.number >> b.year >> b.language >> b.name … Read more
The error is: you declared a destructor but you didn’t define it. Add a definition for the destructor or define it as default: #ifndef CLOTHING_H_ #define CLOTHING_H_ #include <string> #include <iostream> using namespace std; class Clothing { private: int gender; int size; string name; public: Clothing(); Clothing(const Clothing &t); Clothing(int gender, int size, string name); … Read more
You can only do this if you: Control the websites in question (in which case, just serve the code on those sites), or Control/extend the browser being used. In this case, if you write a browser addon/extension, you can configure it to run when the browser goes to specific websites. What you can’t do is … Read more
You can use map const words = [“hello”, “world”, “how”, “are”, “you”] let op = words.map((value,key) => ({[key]: value})) console.log(op) solved how to turn array into array of objects
To get everything between two pattern you can use this sed command: sed -n ‘/.* id:.*/,/.* uid:.*/p’ log.txt And you’ll get — Request — some content …. — Response — …. where -n suppresses automatic printing of pattern space p prints the current pattern space 1 solved Extract part of log file
Think about this part: random.nextInt(75) + 25 You’re generating a number between 0 and 74, then adding 25. This generates a random number from 25 to 99. If it generates 74 and you add 25, it becomes 99. You need to subtract the lower bound before generating: random.nextInt(75 – 25) + 25) 2 solved Why … Read more
First I assume you have some basics that look like this #include <iostream> struct vec2 { double x; double y; }; std::ostream& operator<<(std::ostream& stream, vec2 v2) {return stream<<v2.x<<‘,'<<v2.y;} //real methods vec2 translate(vec2 in, double a) {return vec2{in.x+a, in.y+a};} //dummy placeholder implementations vec2 rotate(vec2 in, double a) {return vec2{in.x+1, in.y-1};} vec2 scale(vec2 in, double a) {return … Read more
1) Add a UILongPressGestureRecognizer to you cell – (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@”MyIdentifier”]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@”MyIdentifier”]; cell.selectionStyle = UITableViewCellSelectionStyleNone; //add longPressGestureRecognizer to your cell UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)]; //how long the press is for in seconds lpgr.minimumPressDuration = … Read more
You can get your expected out put using this code String[] B = {“2”, “14”, “5”, “12”, “10”}; String[] I = {“20”, “25”, “18”, “16”, “22”}; String[] N = {“42”, “32”, “FREE”, “31”, “39”}; String[] G = {“60”, “55”, “53”, “46”, “59”}; String[] O = {“64”, “70”, “67”, “75”, “71”}; String[][] test={B,I,N,G,O}; int n=0; System.out.println(“B … Read more