Learning content Es6

catalogue 1, Incomplete deconstruction 2, Deconstruction assignment of object 3, Operator review and extension 1, Incomplete deconstruction 1. If the variable name is less than the value on the right side of the equal sign and there is no other special treatment, the extra value will be ignored 2. There are more variable names than the v ...

Posted by Sakesaru on Thu, 10 Mar 2022 17:14:30 +0100

Follow the compilation principle and the main process to realize "printing 1 + 1 results"

Demo prototype project that follows the compilation principle and main process to print 1 + 1 Results Project introduction Printing 1 + 1 results is so complicated that it is not a dazzling skill, but only for simple display: 1. Lexical analyzer; 2. Parser; 3. Script compiler; 4. There are four processes for compiling executors, because the ...

Posted by Big_Ad on Thu, 10 Mar 2022 20:14:59 +0100

Several sorting methods of arrays

Quick sort Quick sorting embodies the idea of divide and conquer. Determine the final position of a number each time, place it in the correct position, and then quickly sort the arrays at both ends in the same way through recursion. It should be noted that when using quick sort, the decision number needs to be taken randomly, which is called ...

Posted by ferronrsmith on Thu, 10 Mar 2022 17:33:18 +0100

ffmpeg multi-threaded simple player-carding of main functions

Mainly the next few functions First is the basic definition of the main function VideoState *is; is = av_mallocz(sizeof(VideoState)); if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) { fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError()); exit(1); } is->pictq_mutex = SDL_CreateMutex(); is-&gt ...

Posted by reece_1989 on Thu, 10 Mar 2022 19:27:05 +0100

Deadlock and deadlock detection

1, What is a deadlock For example, if thread a occupies resource 1, thread b occupies resource 2, thread b needs resource 1 and thread a needs resource 2, a deadlock will occur In the deadlock solution, log and gdb debugging can be used when the number of threads is small log and gdb cannot be used to solve the problem of too many thre ...

Posted by pentinat on Thu, 10 Mar 2022 17:25:19 +0100

PG Database Source-SysCache Partial Matching Mechanism

The catcache code is located at src/backend/utils/cache/catcache.c, which contains links and operations to initialize SysCache structures and pointer relationships between data structures. Finding tuples in CatCache There are two ways to find tuples in a CatCache: exactly matching the SearchCatCache and partially matching the SearchCatcac ...

Posted by hanhao on Thu, 10 Mar 2022 19:05:13 +0100