programing pearls

. join (OS. path. abspath (pathname ),'.. /') OS. environ ['django _ SETTINGS_MODULE '] = 'setting' # CLEAR user cache def help_clear_cache (self): print "Usage: clear_cache [sns_id] "print" -- clear the user's cache "@ not_exit def do_clear_cache (self, sns_id): from scripts. update_cache import clear_member_all_cache (sns_id) # Upgrade def help_user_level_up (self): print "Usage: user_level_up [sns_id] [level] "print" -- level up the user to the level "@ not_exit def do_user_level_up (self, pa

CC always becomes very depressed at the end of this month, he had checked his credits card yesterday, without any SURPRI SE, there is only 99.9 yuan left. He is too distressed and thinking on how to tide over the last days. Being inspired by the entrepreneurial spirit of "HDU Cakeman", he wants to sell some little things Of course, this is not a easy task. As Christmas is around the corner, Boys be busy in choosing Christmas presents to send to their girlfriends. It is believed this chain brace

CC always becomes very depressed at the end of this month, he had checked his credits card yesterday, without any surprise, There is only 99.9 yuan left. He is too distressed and thinking on how to tide over the last days. Being inspired by the entrepreneurial spirit of "HDU Cakeman", he wants to sell some little things Of course, this is not a easy task.As Christmas is around the corner, Boys be busy in choosing Christmas presents to send to their girlfriends. It is believed this chain bracelet

Suggested Learning Paths:First of all, learn the editor, vim, Emacs and so on.Then learn to make file files, just know a little bit, so you can prepare the program.Then look at "C programming language" kr, so that, basically can do general programming, by the way to find the data structure of the book to see.If you want to learn unix/LINUXProgramming, "Advanced programing in Unix Envirement" absolutely classic textbook, deepen the Foundation, Learning

This is a post posted on Google blog by Joshua BLOCH (author of valid Java. Before talking about this post, I have to repeat Joshua Bloch's suggestion: if you have not readProgramming pearls(The Chinese version is called programming Pearl.) read this book now. If you read it once, read it again now. Or back to Joshua's article. Jon Bentley, the author of programming pearls, gave a lecture on CMU. He asked t

Function prototype: extern char * strcat (char * dest, char * src)Parameter description: dest is a pointer to a destination string, that is, the connected string (in the front). src is a pointer to the source string (in the back ). Database Name: # include Function:Add the string indicated by src to the end of dest to connect the string. The connection process overwrites '/0' at the end of dest '. Return description:The memory areas specified by src and dest cannot overlap, and dest must have

programming paradigms, and Scala combines the two paradigms very well. OK, here we go:The functional programming paradigm is a different programming paradigm, and if we return to the meaning of the word "programming paradigm", we need to explain:"Programming Paradigm": "Paradigm" is scientifically described as a concept that is clearly described or a way of thinking in scientific practice. The main "programming paradigms" are: "imperative programming paradigm (imperative

Function prototype:extern char *strcat (char *dest,char *src)Parameter description: Dest is a pointer to a destination string, which is the concatenated string (in front), and SRC is a pointer to a source string (after). Library name : #include function Function:The string src is added to the end of the dest to implement a string connection, which covers the '/0 ' at the end of the dest. Return Description:The memory regions referred to in SRC and dest can not overlap, and dest must have enou

HDU 3746 Cyclic nackñ (KMP zookeeper» · ½ ú£.Problem DescriptionCC always becomes very depressed at the end of this month, he has checked his credit card yesterday, without any surprise, there are only 99.9 yuan left. he is too distressed and thinking about how to tide over the last days. being got red by the entrepreneurial spirit of "HDU CakeMan", he wants to have some little things to make money. of course, this is not an easy task.As Christmas is around the corner, Boys are busy in choosing

Jonathan Hardwick:Http://www.cs.cmu.edu/~jch/java/tools.html Skill of d.2.4 Performance evaluationBecause the system clock is used in the evaluation, do not run any other processes or applications at that time, so as not to affect the test results.If you modify your program and try to improve its performance (at least on the development platform), you should test the execution time of the code separately before and after the modification.Try to test each time in a completely consistent environm

First, what is JSON? JSON is a lightweight format for data interchange Second, Python's thinking of working with JSON In fact, it is easy to understand the data into JSON format data and bar JSON format data parsing out Third, the specific method of Python processing JSON 1, Json.dumps () The function can convert the simple data type (INT\FLOAT\STRING\TUPLE\LIST\DICT\UNICODE) to JSON format, the sample code is as follows: Import Jsonsrc_data = {"Name": "Tacey", "age": +, "sex": "Male", "interst

only to learn the network programming, but also some common skills of system programming is very familiar with, if continue network programming, suggest to see "tcp/ IP in the third volume of Internet interconnection, there are a lot of application protocol Telnet, FTP and other protocols programming.If you want to write device drivers, first of all, your system programming interface such as files, IPC, etc. must be familiar, and then learn "LDD" 2.For the evaluation of several classic textbook

by 0 or more whitespace, a producer, and a newline character. The C language compiler will automatically connect these strings together. Therefore, the following expression: "One" "Two" "three" is actually equivalent to "onetwothree". Therefore, the initialization statement of the preceding cross-line can also be done in the following form:Char letters[] = {"ABCDEFGHIJKLMNOPQRSTUVWXYZ"An example is given under "abcdefghijklmnopqrstuvwxyz", and the following three printf statements actually acce

, as follows:Char letters[] = {"Abcdefghijklmnopqrstuvwxyz\Abcdefghijklmnopqrstuvwxyz "}; You can avoid adding more spaces to the entire string by entering a string from the beginning of the continuation line. To sum up, the above statement defines a character array letters,and initialize it to the following initial value: "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ"The C language also has a method of splitting a string, which is to write multiple adjacent strings. These strings are se

familiar with, and then learn "LDD" 2. For the evaluation of several classic textbooks: "The C programing Language" Kr Classic C language Programming teaching materials, the author is the inventor of C language, teaching materials in simple and simple. Although a little old, but a necessary manual, and now sometimes I often turn over. The space is relatively small, but every time you look at it, there is a harvest. In addition, it can be replaced b

Which of the following methods can Pearl be obtained? The methods for obtaining pearls are as follows: 1. Buy a jewelry box at the mall of "hot blood Three Kingdoms" to offer pearls at an organic rate. 2. There is a certain probability of pearl acquisition through the field collection. The harvest from the field is related to the following factors: the level of the field. The higher the level of

/* The title cannot be too long. Poj_2533_longest ordered subsequence poj_1260_pearls hdu_1025_constructing roads in jgshining's King hdu_1074_doing homework */ Poj_2533_longest ordered subsequence Http://poj.org/problem? Id = 2533 Lis does not explain = #include Poj_1260_pearls Http://poj.org/problem? Id = 1260 There are n kinds of pearls, the higher the price, the better the quality, each payment (quantity + 10) * unit price when purchasing; Origi

similar to the Sky color style. Click OK, and make sure that the gradient is rendered from a light to dark gradient from the bottom to the top. Next, apply the noise filter (Filter > Noise > Add Noise), set the number to 4%, and select the average distribution, which makes the entire background look clean. Figure 02 Step Two: This opens the model material in Photoshop. This step is mainly to pull the map operation. In Photoshop, there are many ways to pull

) psychologically, when another person is by your side and works closely with you to do the same thing, you may be embarrassed to make it easy and confused. (4) At the enterprise management level, pairing can communicate more effectively, learn from each other and pass on experience, and better handle the flow of personnel. Because one person's knowledge has been shared by others. 2,Disadvantages: First of all, the efficient pair programing can be don

several classic textbooks:The C program design textbook K R is the inventor of C language. Although it is a bit old, I often flip through a necessary manual. The length is relatively small, but every time you read it, you will get it again. It can also be replaced by Tan haoqiang's C language programming.Advanced programing in UNIX envirement W. Richard Steven S: it's also a very classic book (nonsense, but it's not a classic of the Steven s book !)