Seulgi Kim

The exact term of escape code defined in ISO 6429 is a control function. Escape code is commonly used to refer to the code or sequence that represents control functions. Control codes defined by ISO 6429 are divided into two categories; C0 codes and C1 codes. C0 codes correspond to non-printing characters in ASCII . These codes are familiar to developers. It includes line feed ( \n ), carriage return ( \r ), tab ( \t ), and null character ( \0 ). There are 32 codes in C1. They are represented by one-byte values between 0x80 and 0x9F . Unlike C0 codes, C1 codes are not defined in ASCII . They can only be used in terminals that support ASCII . In other words, they are available in 7-bit environments. In modern 8-bit environments, C1 codes cannot be used directly and must be expressed as escape sequences. Therefore, most modern terminals use escape sequences to represent C1 codes when needed. An escape sequence is a series of characters that begins with ESC ( 0x1B ). Sequences t...

When installing Linux on a computer, I always install a program called sl . This program displays a train when you execute sl . It is not a practical program but rather a program that gives you time to think when you make a typo with the commonly used ls command in the terminal. Showing a train on the screen helps you calm down and not make other mistakes when you are in a hurry to type. That's why I install this program. source: https://github.com/mtoyoda/sl The terminal is a program that receives and displays two streams, stdout, and stderr, from a program. These outputs are sequential outputs and typically flow from the top left to the bottom right. However, to draw new characters on an already-used screen, a special method is needed. This special method is called escape codes . Escape codes are a kind of promise defined in the terminal. Currently, these promises follow the standards defined in ISO 6429 . However, in the past, there was no unified consensus, and each term...

Type conversion is not special in Rust. It's just a function that takes ownership of the value and returns the other type. So you can name convert functions anything. However, it's a convention to use as_ , to_ , and into_ prefixed name or to use from_ prefixed constructor. From You can create any function for type conversion. However, if you want to provide generic interfaces, you'd better implement the From trait. For instance, you should implement From<X> for Y when you want the interface that converts the X type value to the Y type value. The From trait have an associated function named from . You can call this function like From::from(x) . You also can call it like Y::from(x) if the compiler cannot infer the type of the destination type. Into From have an associated function, it makes you be able to specify the destination type. It's why From has an associated function instead of a method, but on the other hands, you cannot use it as a me...

Garbage collection is a technique that automatically releases unnecessary memory. It's very famous because many programming languages adopted garbage collection after John McCarthy implemented it in Lisp. However, there are a few people who misunderstand what garbage collection does. If you think garbage collection prevents a memory leak, unfortunately, you are one of them. Garbage collection cannot prevent a memory leak. There is no way to avoid all memory leaks if you are using Turing-complete language. To understand it you should know what a memory leak is. Wikipedia describes a memory leak as the following: a type of resource leak that occurs when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released. Briefly, a memory leak is a bug that doesn't release a memory that you don't use. So it is first to find the memory which will not be used in order to detect memory leaks. Unfortunately, it i...