In this SO post, there are two answers that -combined together- provide a nice solution for successfully using ON CONFLICT. The example below, uses ON CONFLICT DO NOTHING;: BEGIN; CREATE TEMP TABLE tmp_table (LIKE main_table INCLUDING DEFAULTS) ON COMMIT DROP; COPY tmp_table FROM ‘full/file/name/here’; INSERT INTO main_table SELECT * FROM tmp_table ON CONFLICT DO NOTHING; … Read more
Try this: import sys import time k = 0 try: buff=”” while True: buff += sys.stdin.read(1) if buff.endswith(‘\n’): print buff[:-1] buff=”” k = k + 1 except KeyboardInterrupt: sys.stdout.flush() pass print k
Is there any faster way of doing this in Java? Yes. Scanner is fairly slow (at least according to my experience). If you don’t need to validate the input, I suggest you just wrap the stream in a BufferedInputStream and use something like String.split / Integer.parseInt. A small comparison: Reading 17 megabytes (4233600 numbers) using … Read more
It seems you are looking for something like this. The program essentially waits for user input. If up arrow key is pressed, the program prints “Arrow key pressed” and then exits. If anything else is pressed, it waits for the user to complete what he is typing and prints it, then exits. #include <termios.h> #include … Read more
Just define STDIN constant at top of your file, define(‘STDIN’,fopen(“php://stdin”,”r”));
When you take a look at Pythons implementation of multiprocessing.Process._bootstrap() you will see this: if sys.stdin is not None: try: sys.stdin.close() sys.stdin = open(os.devnull) except (OSError, ValueError): pass You can also confirm this by using: >>> import sys >>> import multiprocessing >>> def func(): … print(sys.stdin) … >>> p = multiprocessing.Process(target=func) >>> p.start() >>> <_io.TextIOWrapper … Read more
The class java.io.Console may be useful: System.console().readPassword(); This reads a sequence of chars from the console, without echoing anything. Note that it only works when you launch your java application with a real console. Otherwise, System.console() returns null.
docker compose up and user inputs on stdin That is expected behaviour. up is not interactive. It can start multiple containers, so you can’t have a single terminal that has stdin open for multiple containers. But there is option to you can do with docker-compose. Attach in different window, when you start with docker-compose up, … Read more
You can do something like this to read 10 bytes: char buffer[10]; read(STDIN_FILENO, buffer, 10); remember read() doesn’t add ‘\0′ to terminate to make it string (just gives raw buffer). To read 1 byte at a time: char ch; while(read(STDIN_FILENO, &ch, 1) > 0) { //do stuff } and don’t forget to #include <unistd.h>, STDIN_FILENO … Read more
You need to pass also \n symbol to get your command work: var spawn = require(‘child_process’).spawn, child = spawn(‘phantomjs’); child.stdin.setEncoding(‘utf-8’); child.stdout.pipe(process.stdout); child.stdin.write(“console.log(‘Hello from PhantomJS’)\n”); child.stdin.end(); /// this call seems necessary, at least with plain node.js executable