Tag：Octal number system
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Time：2020-2-5
Recently, when using the txt file for data processing, I suddenly found out how the txt file encodes the data. Is it stored in binary? In order to know this situation, I used the hexdump tool to view the binary form of the txt file, and learned the use of the hexdump file by the […]
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Time：2019-12-28
By Jimmy Breck mckye Crazy technology house Original: http://www.breck-mckye.com/bl No reprint without permission Although I’ve been writing JavaScript code almost every day for the past seven years, I have to admit that I don’t really pay much attention to es language release statements.async/awaitandProxiesMajor features like this are one thing, but steady small-scale, incremental improvements are […]
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Time：2019-11-24
Original: https://blog.csdn.net/lipengfeihb/article/details/54415283 I. Problems fileName := “/Users/my/tests/perm_file” f, _ := os.OpenFile(fileName, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0666) // code f.Close() The above code is to open a file. If the file does not exist, a new file will be created. At the same time, the permissions are set to 0666 (- RW RW RW RW -), but the permissions […]
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Time：2019-10-25
Placeholder: %D,% I, for integer,% f-floating point,% s, string,% C, char.% P pointer,% FL long long,% e scientific count,% G decimal or scientific count. Format placeholders in C: %A,% a reads a floating-point value (p-count (hex count), C99 only) %C read in a character %D read in decimal integer %E convert numerical value to exponential […]
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Time：2019-8-12
Programming apes may not be unfamiliar with binary system, which is widely used in computing technology. Binary data is a number represented by two numbers, 0 and 1. But many people will convert binary to integer, but how to use binary to represent negative numbers? Some people would say that adding a negative number before […]
