[만들면서 배우는 리스프 프로그래밍](http://book.daum.net/detail/book.do?bookid=KOR9788979148756) 저자 [콘래드 바스키](http://book.daum.net//search/bookSearch.do?advancedSearchYN=y&author=%EC%BD%98%EB%9E%98%EB%93%9C%20%EB%B0%94%EC%8A%A4%ED%82%A4) 지음 출판사 [한빛미디어](http://book.daum.net/search/bookSearch.do?advancedSearchYN=y&publisher=%ED%95%9C%EB%B9%9B%EB%AF%B8%EB%94%94%EC%96%B4&publisherID=PU00389446) | 2011-11-27 출간 카테고리 [컴퓨터/IT](http://book.daum.net/category/book.do?categoryID=KOR33) 책소개 게임을 만들면서 개념을 학습하는 리스프 입문서1958년에 개발된... ** 에릭 스티븐 레이몬드 “해커가 되려면” LISP의 필요성을 느낀다. 한번 팀원들과 이책을 주제로 스터디해야할 것 같다.

You can do it in MySQL with the ORDER BY clause. Sort by NULL first, then the date. SELECT * FROM your_table ORDER BY (date_column IS NULL), date_column ASC Note: This assumes rows without a date are NULL.

http://forensic-proof.com/archives/3472#disqus_thread

In the time between when I read up on S3 redirects and when I published a post on what I had learned, Amazon created a second way to redirect parts of S3 websites. The first way redirects a single URL at a time. These are the redirects I already knew about, which were introduced last October. They are created by attaching a special piece of metadata to an S3 object. The second way was introduced in December, and redirects based on prefix. This is probably most useful for redirecting entire folders. You can either rewrite a folder name, preserving the rest of the URL, or redirect the entire folder to a single URL. This kind of redirect is created by uploading an XML document containing all of the redirect rules. You can create and upload the XML, without actually seeing any XML, by descending through boto’s hierarchy until you find...

https://www.digitalocean.com/community/tutorials/how-to-use-nginx-as-a-global- traffic-director-on-debian-or-ubuntu

어떤 자연수 n이 있을 때, d(n)을 n의 각 자릿수 숫자들과 n 자신을 더한 숫자라고 정의하자. 예를 들어 d(91) = 9 + 1 + 91 = 101 이 때, n을 d(n)의 제네레이터(generator)라고 한다. 위의 예에서 91은 101의 제네레이터이다. 어떤 숫자들은 하나 이상의 제네레이터를 가지고 있는데, 101의 제네레이터는 91 뿐 아니라 100도 있다. 그런데 반대로, 제네레이터가 없는 숫자들도 있으며, 이런 숫자를 인도의 수학자 Kaprekar가 셀프 넘버(self-number)라 이름 붙였다. 예를 들어 1,3,5,7,9,20,31 은 셀프 넘버 들이다. 1 이상이고 5000 보다 작은 모든 셀프 넘버들의 합을 구하라. 자바로 짠거 / 합 : 1227365 public static void main(String[] args) { calculateNumbersHasGenerator(); int sum = 0; for (int i = 0; i < 5001; i++) if (!hasGenerator(i)) sum += i; System.out.println("합 : " + sum); } private static boolean hasGenerator(int num) { return numbersHasGenerator.contains(num); } private static ArrayList < Integer > numbersHasGenerator; private static void calculateNumbersHasGenerator() { numbersHasGenerator = new ArrayList < Integer > (); for...

[윈도우즈 API 정복. 제1권](http://book.daum.net/detail/book.do?bookid=KOR9788979144215) 저자 [김상형](http://book.daum.net//search/bookSearch.do?advancedSearchYN=y&author=%EA%B9%80%EC%83%81%ED%98%95&authorID=AU00354245) 지음 출판사 [한빛미디어](http://book.daum.net/search/bookSearch.do?advancedSearchYN=y&publisher=%ED%95%9C%EB%B9%9B%EB%AF%B8%EB%94%94%EC%96%B4&publisherID=PU00389446) | 2006-06-26 출간 카테고리 [컴퓨터/IT](http://book.daum.net/category/book.do?categoryID=KOR33) 책소개 열정과 철학으로 만든 윈도우즈 프로그래밍의 바이블 - 각 장이 ... ** 언파인 엔진(이하 Enpine)을 통해 게임개발을 조금씩 하고있는데, 책의 도움이 필요했다.

[정보처리기사 필기(2015)(8절)](http://book.daum.net/detail/book.do?bookid=KOR9788966187898) 저자 [D](http://book.daum.net//search/bookSearch.do?advancedSearchYN=y&author=D) 지음 출판사 [길벗](http://book.daum.net/search/bookSearch.do?advancedSearchYN=y&publisher=%EA%B8%B8%EB%B2%97&publisherID=PU00388556) | 2014-08-29 출간 카테고리 [컴퓨터/IT](http://book.daum.net/category/book.do?categoryID=KOR33) 책소개 이 책의 특징 ― 수험생의 마음으로 만든 책* 스마트한 시나공 ... 글쓴이 평점 정보처리기사, 그냥 읽음. 개념짚기로는 나쁘지않음. 그래도 뭐든 얕보지 말아야지 . . 근데 난 국제자격증이 필요하다규~~ TT

C 프로그래밍 저자 [윤성우](http://book.daum.net//search/bookSearch.do?advancedSearchYN=y&author=%EC%9C%A4%EC%84%B1%EC%9A%B0&authorID=AU00355674) 지음 출판사 [오렌지미디어](http://book.daum.net/search/bookSearch.do?advancedSearchYN=y&publisher=%EC%98%A4%EB%A0%8C%EC%A7%80%EB%AF%B8%EB%94%94%EC%96%B4&publisherID=PU00367047) | 2010-11-01 출간 카테고리 [컴퓨터/IT](http://book.daum.net/category/book.do?categoryID=KOR33) 책소개 『윤성우의 열혈 C 프로그래밍』 출판사 서평Chapter 03-... 글쓴이 평점 큰누나 대학교 4학년때, 나 중3때 이 책을 자기 안 본다고 나줌. 히히히잉? 프로그래밍 그게 뭐징하던때 지금은 책 상태 난리도아님, 5년이 넘었으니 그럴만도 하지

Checking system load If the demands being placed on a running program cause it to request excessive resources from your server this can lead to poor performance and system instability. ** ** Uptime First let’s check the load on your server using the uptime command. 1 2 $ uptime 15:16:45 up 41 days, 2:35, 2 users, load average: 0.01, 3.01, 2.70 cs The example shows the output from uptime. When the command was run at 15:16:45 the server had been up for 41 days 2 hours and 35 minutes, there were two users logged on and the load averages were 0.01, 3.01 and 2.70. The load average represents the work being done by the system. The three numbers show the load averages for the last minute, 5 minutes and 15 minutes, respectively. A load average of 1 reflects the full workload of a single processor on the system. A load...

Problem Today on a lecture about strings Gerald learned a new definition of string equivalency. Two strings a and b of equal length are called equivalent in one of the two cases: 1. They are equal. 2. If we split string a into two halves of the same size a1 and a2, and string b into two halves of the same size b1 and b2, then one of the following is correct: - a1 is equivalent to b1, and a2 is equivalent to b2 - a1 is equivalent to b2, and a2 is equivalent to b1 As a home task, the teacher gave two strings to his students and asked to determine if they are equivalent. Gerald has already completed this home task, Now it’s your turn! INPUT The first two lines of the input contain two strings given by the teacher. Each of them has the length from 1...

행위패턴 : Template Method 패턴 메소드에서 알고리즘의 뼈대를 정의하는 패턴. C++의 Template 하고는 상관 없음. 코드에서의 중복을 피하기 위함 공통적인 작업흐름은 추상클래스쪽에 한번 정의하고, 나머지 다양한 구현들을 각각의 서브 클래스들에게 담당 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 /** An abstract class that is common to several games in which players play against the others, but only one is playing at a given time. */ abstract class Game { /* Hook methods. Concrete implementation may differ in each subclass*/ protected...

[Talklish Bible 뉴욕스토리 세트](http://book.daum.net/detail/book.do?bookid=BOK00014449354IN) 저자 [이근철](http://book.daum.net//search/bookSearch.do?advancedSearchYN=y&author=%EC%9D%B4%EA%B7%BC%EC%B2%A0) 지음 출판사 [드리머스에듀케이션](http://book.daum.net/search/bookSearch.do?advancedSearchYN=y&publisher=%EB%93%9C%EB%A6%AC%EB%A8%B8%EC%8A%A4%EC%97%90%EB%93%80%EC%BC%80%EC%9D%B4%EC%85%98&publisherID=PU00615146) | 2011-07-01 출간 카테고리 [외국어](http://book.daum.net/category/book.do?categoryID=KOR27) 책소개 ※ 토크리시 온라인 이용권제작사㈜드리머스에듀케이션이용조건 / ... 글쓴이 평점 영어 스터디 관련책중에서는 제일 무난한것같았음. 나쁘지않음.

Nginx Tuning For Best Performance -- For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx. Generally, properly configured nginx can handle up to 400,000 to 500,000 requests per second (clustered), most what i saw is 50,000 to 80,000 (non-clustered) requests per second and 30% CPU load, course, this was 2xIntel Xeon with HT enabled, but it can work without problem on slower machines. You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers. First, you will need to install nginx, my way to install nginx is compiling it from source, but for now we will use `apt-get` ```bash apt-get install nginx ``` Backup your original configs and you can start reconfigure your configs. You...

성능관련해서, 설정 찾다가 괜찮은 포스팅 발견. https://www.digitalocean.com/community/tutorials/how-to-optimize-nginx- configuration