...code. Other threads must wait till the current owner relinquishes the lock by exiting the block of code. Also it is recommended that you lock on a private member object of your class. Monitors lock(obj) is implemented internally using a Monitor. You should prefer lock(obj) because it prevents y...

...ommon concurrency problem I've seen, is not realizing that a field written by one thread is not guaranteed to be seen by a different thread. A common application of this: class MyThread extends Thread { private boolean stop = false; public void run() { while(!stop) { doSomeWork(); ...

...gs as warnings! j() # 1 # 2 # 3 # Warning messages: # 1: NAs introduced by coercion # 2: NAs introduced by coercion # 3: NAs introduced by coercion # warn = 2 -- warnings as errors options(warn=2) j() # 1 # Error: (converted from warning) NAs introduced by coercion ...

...ns in Zq field, where q is a prime such that n <= q < 2n - it exists by Bertrand's postulate. The proof doesn't need to be changed, since the formulas still hold, and factorization of polynomials is still unique. You also need an algorithm for factorization over finite fields, for example the ...

...s, as it also means the argument after the -- cannot be a branch name, and by implication the argument before -- cannot be a file path. – Gem Taylor Sep 18 '19 at 10:16 add a ...

...-output network that has no bias: The output of the network is computed by multiplying the input (x) by the weight (w0) and passing the result through some kind of activation function (e.g. a sigmoid function.) Here is the function that this network computes, for various values of w0: Changin...

...rtas instead of --exec ensures that the process will be correctly detected by its pid and won't erroneously start multiple instances of the daemon if start is called multiple times. Otherwise, start-stop-daemon will look for a /bin/bash process and ignore the actual child process running the daemon....

...aying "Hey, when I call this method, it could have virtually been replaced by a derived implementation, so I don't really know in advance what method implementation I'm actually calling at runtime. So virtual signifies is a placeholder for a method. This implies that methods that are not marked as ...

...ith it. For instance, when concatenating files with cat, a file terminated by newline will have a different effect than one without: $ more a.txt foo $ more b.txt bar$ more c.txt baz $ cat {a,b,c}.txt foo barbaz And, as the previous example also demonstrates, when displaying the file on the comman...

... The following reads a file passed as an argument line by line: while IFS= read -r line; do echo "Text read from file: $line" done < my_filename.txt This is the standard form for reading lines from a file in a loop. Explanation: IFS= (or IFS='') prevents leading/trail...