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Use AutoLisp to remove an AutoCAD-specific entity within a specified layer

How do I get a layer name for straight and multi-line lines in CAD graphics files with AutoLisp? Use (CDR (Assoc 8 (Entget (Entsel))) to get the layer name of the line and other entities. The program you want is to point to a line, get the layer name of the line, and then change the line width of all the lines in that layer to a value. What I want now is the step of "point to line, get the layer name". (Setq Lyname (CDR (Assoc 8 (Entget (Entsel))))

Important AUTOLISP BASIC Grammatical structure

Rule 1: The parentheses form the expression, the left and right brackets "(" and ")" must be paired, relative, and the internal string double quotes "" "and" "" should also be paired.Rule 2: Expression format: (function name operator operator)* Operation functions include function functions and custom functions.* Operators (Independent variables) include: integers (integer), such as 8,-17,500,,9999; Real (real), such as 8.5,-17.456; Strings (string), such as: "AutoCAD", "123";

Chapter 1 program process control box AutoLISP file (1) program Process Control

The process of The AUTOLISP program is controlled by flow control functions. 1. Branch Structure (1) (cond (test expression 1 Result Expression 1) [(test expression 2 Result Expression 2)]...) [Example] 1 (setq n( cond(( Note: This function is similar to the switch statement in C language. The last test expression "t (or t)" is equivalent to "default" and refers to other cases. This test expression is also missing. Different from the C language switch

CSS3 base -10 CSS list (list item labels, list item images, list item locations, List properties)

One, CSS list styleList item Flag List-style-type-The List-style-type property is used to control the style of list item labels in the list-unordered list: Dots that appear next to each list

C-language realization of the linked list of the two-way list (12) to determine whether the list is empty and to get the length of the list __c language

C language to realize the linked list of the two-way list (12) to determine whether the list is empty and get the length of the linked list In the last article, we give two functions of setting node data and acquiring node data, this article will give a function to determine whether the linked

Doubly linked list, List of A and B difference set, linked list polynomial add, static linked list

doubly linked list #include set A is represented by a single-linked list of LA, and set B is represented by a single-stranded-list lb, and the design algorithm asks for a and B two sets of differences, i.e. a Analysis A-B is an element that belongs to a and is not part of a, for each element of set a, x, is searched in set B, and if there is an elemen

Given a list of linked lists, each node of the list contains three attributes: 1, node value, 2, reference to the next node, 3, a reference to any node in the list, or not to any node. Copy the linked list

Idea: The difficulty of this algorithm is difficult to have a reference to a random node in the list, you can not determine which node the reference points to, but we can use the choice of reference to solve the problem. Using the original linked list as a reference, head is a node of the original list, and the next of this node is the one that is down, but now w

Find the sub-list from the list and the sub-list from the list

Find the sub-list from the list and the sub-list from the list The usage of the member function is very strange. An element is used to search in the list. If it is found, the elements found and all elements are converted into a new list

List<user> list=new list<user> () When a list is loaded with a class, it is easy to make mistakes, the value of the attention

DateTime Time ;// defines a UserInfo class A list collection of types that puts the Results of the query into the list set , and the list inside is a collection; listUserInfo> list = wylm. executequeryuser> ("select * from User where User id= ' {0} ' " , ID). ToList (); if (

Php--each and List usage list for each safe each list as value I JS traverse List collection EAC

~ sunny 7~ Day */ ? Usage of 2.listLet's see what the API says.Like Array (), this is not a real function, but a language structure. List () assigns a set of variables in one-step operation.Take a look at an example: list($a,$b)=array(10,20);echo$a,'~',$b,'';//返回10~20?> Yes, you can assign values to a set of variables.Let's look at another example:

Combine two large-to-small ordered lists into a single linked list, the new linked list is a small to large ordered list

Implement a function that merges two large-to-small ordered linked lists into a list, and the new list is a small-to-large ordered list. Can be divided into two ideas:1. Merge the two linked lists into a list, and the combined list is sorted from large to small2. Reverse the

Python list Extend () method-used to append multiple values from another sequence at the end of the list (extending the original list with a new list)

DescribeThe Extend () function is used to append multiple values from another sequence at the end of the list (the original list is expanded with a new list).GrammarExtend () method syntax:List.extend (seq)  Parameters SEQ--List of elements. return valueThe method does not return a value, but adds a new

Linked List {singly Linked list--doubly Linked list--Circular Linked list}

Linked Listunidirectional linked list singly linked list/*********************************************************code Writer:eofcode File:single_linked_list.cCode Date: 2015.01.15e-mail: [Emailprotected]code Description:here is a implementation for singly linked list. If there is something wrong with my code please touch Meby e-mail, thank you.***************

Some operations of the C # list (whether the two list elements want to be the same, whether the list is contained in another list)

First, the fake has two ListList1.all (list2.contains) List1.count = = List2.countSecond, how to determine whether the list in C # is complete with another listBOOL Iscontainsall (list listb) { return listb.all (b = Lista.any (A = a.equal (b)));If the list contains standard data types, it is easier to change a.equal (b) to a==b.Some operations of the C #

HTML a tag img tag ul list, OL list, DL list label, table Table label, lable

A tag is actually used to make a jump.The role of a tag: page jump, anchor (page is a bookmark-like thing, in the URL to show #)Traget = "_blank" This property means that after clicking on the new window opens the connection, if no change is meant to be opened directly on this page.href=# Plus Tag numberIMG TagsIf clicking on the image requires a hyper-connected jump function, the implementation is as follows:Property:SrcTitleAltStyleUL Label: A point is shown in front of the

Delete the reciprocal k nodes in a single linked list and a double linked list __ single linked list

The complete code for implementation is as follows: Delete the reciprocal k node in a single linked list and double linked list public class deletelist{//single linked list node definition public static class node{int value; Node Next; public Node (int data) {this.value=data; }///delete the reciprocal K node in the single linked

Bootstrap implementing a go-to-point list, inline list, horizontal definition list

Inline list: By adding the class name ". List-inline" To implement the inline list, the simple point is to change the vertical list to a horizontal list , and remove the Bullets (numbering)to maintain the horizontal display .Go to the li

Invert linked list-Enter a list of all the elements of the linked list after the list is inverted.

1 /*2 struct ListNode {3 int val;4 struct ListNode *next;5 listnode (int x):6 val (x), Next (NULL) {7 }8 };*/9 classSolution {Ten Public: Onelistnode* Reverselist (listnode*phead) { Alistnode* res=NULL; -listnode* pre=NULL; - if(Phead==null)returnRes; the while(phead!=NULL) { -Pre=phead->Next; -phead->next=Res; -res=Phead; +Phead=Pre; - } + returnRes; A at } -};Invert linked list-Enter a

Java-linked list source code principle analysis, and build a queue through the consumer list, java-linked list

Java-linked list source code principle analysis, and build a queue through the consumer list, java-linked list Here we will introduce the simplest linked list listing; Let's take a look at the add () method: public boolean add(E e) { linkLast(e); return true; } void linkLast(E e) { final Node Th

Python Learning -35.python list comprehensions (List explanation | list generation)

In some cases, we need to do something about the list, such as multiplying each element in the list by 2, which is generally the traversal of each element multiplied by 2. Then it will be two lines to write it down. And this will modify the original list, if you want to not modify the original list, there are more than

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