statistical process control book

After a child process is created using the fork function, the child process usually calls one exec function to execute another program. When a process calls an exec function, the Program executed by the process is completely replaced with a new program, and the new program is executed from its main function. Because ca

;}});} /** * Delete Data collection * @param collection * @param tmp * @return successfully returned data collection, failed to return-1 */function removecollection (Collec tion,tmp) { //var tmp = {username: ' Hello ', password:1}; Collection.remove (Tmp,{safe:true},function (err, Count) { if (err) {Console.log (' Delete data collection failed ' +tmp); return-1;} else {console.log (' Delete data collection succeeded ' +count); return collection;} });}5.async module solves the implementation of s

In UNIX systems,Privilege(For example, the expression of the current date and access control can be changed (for example, whether a specific file can be read or written ))Is based on the user ID and group ID. When the program needs to add privileges or access resources that are not currently allowed to access, we need to change our user ID or group ID so that the new ID has the appropriate privileges or access permissions. Similarly, when a program ne

)) {Memfactorial.cache[n]= N*memfactorial (n-1); } returnmemfactorial.cache[n];} Console.time ("B"); Memfactorial (16); Memfactorial (11); Memfactorial (10); Memfactorial (10); Memfactorial (10); Memfactorial (10); Console.timeend ("B");Since we have cached the results of the previous calculations, we will greatly improve performance when we need this result many times later (I find that performance does not improve when the results of previous calculations are not repeated, and the performance