Second -- User-Defined Functions
If you want to define your own function, you can use the "defun" function. The format of the defun function is: (defun A1 (A2) (A3 )). Where:
A1 is the identifier of the function you want to define. It is usually a function name represented by a string;
A2 is the list of parameters (one or more parameters) of the function to be defined. brackets are required;
A3 is the expression used to calculate the defined function, that is, the function body. Parenth
Let macro of Common LISP is defined as follows: (Defmacro our-left (binds Body) '(lambda, (mapcar #' (lambda (x) (if (consp X) (Car X )) binds), @ body), @ (mapcar # '(lambda (x) (if (consp X) (cadr x) Nil )) binds); (Our-left (x 1) (Y 2) (+ x y) after expansion, it becomes => (lambda (x y) (+ x y) 1 2) here we can easily see that let is actually a Lambda syntactic sugar :) The let macro of scheme is defined as follows: (Defien-syntax let
Emacs Debugging ConsiderationsEmacs Debugging has a pit, first El file will be compiled to ELC file, causing me to modify the source code is not effective, I also set a breakpoint, interrupt in the ELC file only to find the problem. Error debuggingError I think is the easiest to debug, because this kind of obvious error is easy to trace, the following are several ideas:-–debug-init Startup Parameters-Debug-on-error Slow ReflectionExecute the code First and press C-g when Emacs doesn't respond.(
Find square rootSuccessive averaging DUE to HERON of ALEXANDRIA* * to FIND a approximation to SQRT (X) * *
Makr A GUESS G
IMPROVE the GUESS by averaging G and x/g
KEEP improving the GUESS untile IT is good enough
Use 1 as an INITIAL GUESSAlgorithmic thinking(define (try guess x)(if (good-enough? guess x) guess (try (improve guess x) x)))(define (sqrt x) (try 1 x))Reference CodeNote: This code comes from 48974029(define (square x) (* x x)) //定义求平方 (define (average x y)
工欲善其事 its prerequisite, this article began to record the use of Lisp environment problems.
Operating environment I have two recommended ways:
1, Lispbox
2. Sublime text + SBCL
The first way to do this is to download a compressed package. The. bat file in the pressurized operation will open
The second way to configure the sublime text of the compilation system needs to be configured
1, first to download SBCL and installation, installati
The development of modern science and technology can be described by the rapid development of new technologies. With a blink of an eye, an application that can change the world may be invented. Of course, a company that is far ahead of the world may be instantly surpassed. In the age of change, time is the most important thing, that is, efficiency.
This is especially true for the AI industry. Our products, clothing, shelter, and transportation all
Go crazy! "AI age": Boston power left Santa Claus and reindeer unemployed !, Ai Boston
-Welcome to the AI technology expert community>
-Recruit a part-time AI instructor with a daily salary of 5-10 k>
Santa Claus becomes a beautiful girl and reindeer becomes a robot dog-this is a video to celebrate the "Happy Chr
recently, QQ has introduced a new play, yes, that's centimeter. Ai is a new game of Microsoft and Tencent, CM people ai play in the expression of the mood to leave a card, need players to unlock one by one, many players want to unlock like expression, but do not know cm ai like how to unlock, then, CM people ai like ho
ideas and other things in a program. In AI, this technique
It is widely used. Heuristic functions are used to process searches. They are used to measure the number of nodes in a search tree.
How far is the mark node. A heuristic predicate is used to compare two nodes in a search tree.
A good one is to make progress towards the goal. According to my opinion, heuristic predicates are more useful.
Genetic Programming
Genetic Programming is a technique
Review of the history of AI into China, review of the history of AI
In 1955, American scholar John McCarthy (1927-2011) first proposed the term "AI", meaning: artificial intelligence is The science and engineering of making intelligent machin ". At that time, Chinese people were not clear about what the "intelligent machine" proposed by Mr. card.com meant. The
With the advent of major Internet giants, AI technology has experienced a comprehensive recovery after several cold winter, standing in the storm of the times, ushered in an outbreak period, and has become the trend of the times! Artificial intelligence enterprises are making great strides, but they also face many problems for job seekers studying artificial intelligence.
Two years ago, algorithm professionals in the industry were still scarce. How
First in the CorelDRAW to try, really wrong, hint information as shown:
Then immediately into PS, place the file, get a blank image, as shown in the picture:
I was wondering if the AI file was corrupted, or other reasons, through QQ to understand, exclude file damage, then estimate is the version of the problem, immediately with illustrator CS5 open the AI file, open Normal, and th
second game-- topic: C + + Development engineer (AI direction) career prospects July 26 (Thursday) 20:00~21:00> Teacher: Liu Yuandong (Chengdu Multi-Travel technology)Technology Director of Chengdu Multi-Travel Technology Co., Ltd., full stack research and development engineer, independent software, game developers, proficient in computer high-performance network communications, gaming and industrial graphics design.> Course Essentials1. C + + develop
Use AI to quickly make personalized fonts (poster font design)
1, open AI (i installed is AI CS6), a new document, file size is not called, because AI generated vector map, copied to PS generated smart object/shape layer, can enlarge/shrink, not distortion, remember in the advanced options to choose the corresponding
Microsoft's AI, AI
Recently, Microsoft xiaoice's self-owned examiner recruited his interns, showing the limelight. When a message is sent, more than 10 million applicants will be offered within several hours. What does this mean?
In the past, hurblent started the opportunity of machine reasoning.
System, advocating mathematical mechanization; Exploring "intelligence" in soft big data and launching
Transferred from: http://blog.csdn.net/zhangxiao13627093203/article/details/47658673The previous article talked about the simpler form of the tracking algorithm, which looks fake because AI-controlled objects track targets too precisely. A more natural way of tracking can be done so that the tracer's direction vector is aligned with the direction vectors defined from the center of the tracking target to the center of the tracker. :The basic idea of th
Man-Machine ai wuziqi-Java Implementation of wuziqi AI Algorithm
Man-Machine ai wuziqi
Download: chess. jar (run directly)
Source code: https://github.com/xcr1234/chess
In fact, the most important thing in a machine game is scoring. The score is the weight. If you place a piece to a place with a higher score, I will have a higher probability of winning.
1. Qualitative AI and non-qualitative AI
Qualitative behavior or its performance is specific and predictable without uncertainty.Non-qualitative behaviors have some degree of uncertainty and are somewhat unpredictable. For example, a non-player role can learn combat tactics suitable for the player. This learning ability can use neural networks, Bayesian technology, or genetics.Algorithm.
2. Several mainst
Human-machine AI GobangDownload: Chess.jar (can be run directly)Source: https://github.com/xcr1234/chessIn fact, the most important machine game is scoring, score is the weight, the pieces down to the points of the place, I win the probability of greater.In the course of playing chess, most of the points are very small, or close, so there is no need to rate each point, just a few points in the vicinity of us (offensive) or near the enemy (defensive) t
ai how Ai how to use slicing tool to crop graphics?
1, the first step must be to open the AI software
2. If you want to cut the material on the interface to a picture in PNG format with no background, so the first step is to hide the rest of the material, including the background, as shown below, take the red box as an example, if you want to cut out
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