solidity memory vs storage

Once to interview, the interviewer suddenly asked me this question, then I only know how to write the optimization, but specifically do not know why that writing, the price immediately down OH1. What do you think of the following development habits? for (int i=0;i) { new person (); }such as: Loop once, will open up a memory space in the heap memory, and are referenced by the stack

CPP-understanding memory storage with the help of artifacts VS, cpp -- I also want to know this before. The first is not to learn the underlying layer, but to understand the concept of online search. The second is the end of the story. The example is also complicated, it may be difficult for the non-C direction, so I have never understood it. Today, I accidentally found out that I had to go through the

The Win7 system uses a period of time after the memory space is getting smaller, more and more files are stored, slowing down the system running speed. Sometimes feel the computer memory is always above 50%, think play game or watch movie compare card. In fact, we can set up virtual memory to improve the performance of the computer, reasonable optimization of vir

SQLite data files to the Linux memory file system/dev/shm/data.sqlite3, is the memory-level read and write performance of the SQL system.Use SQLite to implement memory key value storage:CREATE TABLE IF not EXISTS memory (Key VARCHAR (+) not NULL PRIMARY key,Value TEXT not NULL,Time INTEGER not NULL);INSERT into

Local variables, parameter variables are stored in the stack, and when out of scope, the allocated memory is automatically reclaimed by the system outside the scope of the action.New memory space is stored in the heap, is not managed by the scope, is not automatically reclaimed by the system, and frees up memory only when delete is used or the entire program ends

the parameter: mysql> show variables like ‘innodb_log_buffer%‘; +------------------------+----------+ | Variable_name | Value | +------------------------+----------+ | innodb_log_buffer_size | 16777216 | +------------------------+----------+ The contents of the redo log buffer are flushed to the disk redo log file in the following situations: Master thread refreshes every second Each transaction is committed when it refreshes When redo log buffer space is less tha

The form of character data storage in memory and its usage (C implementation) 1, put a word constants amount in a character variable, not actually put the character itself into the memory unit, but the corresponding ASCII code of the character into the storage unit. For example, the ASCII code for the character ' A ' i

bytes.Therefore, when the int type pointer p points to a pointer of type char, it gets not a byte, nor 8 bytes, which is 4 bytes (int type)So from memory address ff10, take four bytes, well, the above Excel chart, that is, from 0000 0001 down four lines, in the high to low sort, there are several possibilities, but to get the result 513, there is only one possibility, is the first picture, and the sort is from bottom to top (high to low), Also, Java

,4 write thread.Or you can view it directly by looking at the variable ' innodb_%threads '.Mysql5.5 innodb_version for 1.1.8Mysql5.5 InnoDB threads are similar to InnoDB plugin.Master thread in the main loop, there are two major operations: operations per second and operations every 10 seconds:The operations once per second include:1. The log buffer is flushed to disk, even though the transaction has not yet been committed (always), which explains why the big transaction commits quickly!2. Combi

For a given dictionary, the following [html] i1 ii i1 one ii i1 i1 one ii i1 ii i1 ii i1 i1 1111 ii i4 ii i1 ii i4 ii i1 1117 ii i1 ii i1 i1 q i1 1113 ii i1 ii i1 ii i1 s an1 1119 ii i1 ii i1 ii i1 j iu3 1112 ii i1 ii i1 ii i1 i1 ee er4 1115 ii i1 ii i1 ii i1 i1 uu u3 1118 ii i1 ii i1 ii i1 B a1 1116 ii i1 ii i1 ii i1 l iu4 1114 ii i1 ii i1 ii i1 s iy4 1110 ii i1 ii i1 ii i1 i1 l ing2 a seven ii i1 ii i1 q i1 here skipped when many words are used for speech recognition, dictionary used for train

change virtual memory file storage location free system disk free space2016-01-15 Problem Description: The system disk is not available enough space, by transferring the virtual memory file of the system disk to the non-system disk (such as D disk), freeing the system disk space occupied by the virtual memory