Programmer Group

1. Experimental task 1 Source code: assume cs:code, ds:data data segment x db 1, 9, 3 len1 equ $ - x y dw 1, 9, 3 len2 equ $ - y data ends code segment start: mov ax, data mov ds, ax mov si, offset x mov cx, len1 mov ah, 2 s1:mov dl, [si] or dl, 30h int 21h mov dl, ' ' int 21h inc ...

1. Structural elements 1.1 related concepts of document structure elements 1.1.1header element The header element is a structural element that represents the header. It is usually used to place the title of the whole web page or a content block in the page, but it can also contain other elements, such as title (< H1 > ~ < H6 &gt ...

1. Questions left over from last lesson: There is a description in the official document about methods: Note that arrow functions should not be used to define method functions (for example, plus:()=>this.a++) Question 1: Why can't arrow functions be used in methods? Yes, you can, but you can't use this. There's a problem this is the obj ...

1, Importance of data backup In a production environment, data security is critical Any loss of data can have serious consequences Causes of data loss Program error Human operation error Operation error disk failure Disasters (e.g. fire, earthquake) and theft 2, From a physical and logical point of view, backup can be divided into Physic ...

preface Better manage the connection with the database, avoid memory leakage and server crash due to too many connections, and reduce resource consumption. 1, Database connection pool 1. The necessity of JDBC database connection pool When developing web programs based on database, the traditional mode basically follows the followi ...

1, Foreword Yesterday, I talked about the composite API, \ # it's almost 2202. Don't you know what the composite API of vue3 is? [2] Today, let's listen to what I can do with vue3's setupBorrow a word from the official websiteThe setup option is a function that receives props and contextIn other words, its basic writing should be like thisexpor ...

1, UR robot pose representation By default, the base coordinate system and TCP of UR robot are shown in the following figure: Note that the TCP location and coordinate system here are in the default TCP configuration. The default TCP configuration is shown in the following figure: If the user wants to set the TCP position and coordinate sys ...

Custom viewgroups can be divided into three categories according to their parent classes: inherited from ViewGroup, inherited from system specific ViewGroup (such as LinearLayout) and inherited from View. The second is the simplest and the third is the most complex. Let's focus on the first case with moderate difficulty. target Follow ViewPag ...

The article concludes from: https://wangdoc.com/javascript/basic/grammar.html 1. statement and expression Statement: no return value, ending with a semicolon Expression: required return value Space: no practical significance, but not recommended Carriage return: return cannot add carriage return 2. identifier An identifier is a legal name us ...

Explain and summarize the protection mechanism encountered in the pwn process. Stack Canaries Put a well written: PWN Canary learning - sarace - blog Park (cnblogs.com) brief introduction stack canaries are canaries from underground coal mines. They can detect gas leakage faster than miners and have the function of early warning. When this con ...