avenir heavy

return of the temporary array Code: Array.prototype.removeDuplicate = function () { var n = []; for (Var i=0;i Note: The Nan value will be deleted Third Kind Idea: Create a temporary object, use the For loop to detect if this temporary object has arr[i] This property, if there is no this property indicates that Arr[i has no value that it duplicates before it. Set the Arr[i property of the temporary object to true, indicating that it has this property and adds the item to the

Test files Copy Code code as follows: [Root@bogon ~]# Cat >test Jason Jason Jason Fffff Jason Press CTR + D to save 1, Sort-u Copy Code code as follows: [Root@bogon ~]# sort-u Test Fffff Jason 2, Uniq Copy Code code as follows: [Root@bogon ~]# Uniq Test Jason Fffff Jason This shows that uniq need to be sorted before they can be heavy 3, sort, pipe and uniq

In simple terms, this technique corresponds to the following scenario Suppose there is text as follows Copy Code code as follows: Cccc Aaaa bbbb dddd bbbb Cccc Aaaa Now it needs to be processed, this is simple, sort-u can be done, but if I want to keep the original order of the text, for example, there are two aaaa, I just want to remove the second AAAA, and the first AAAA in front of BBBB, after heavy, still want to

); int hash = hash (Key.hashcode ()); int i = indexfor (hash, table.length); for (entry It is clear that the above operation 8 Basic types of data +string typeis useful, but if you want to apply a heavy approach to a complex object, the above approach is a bit less. Knowing the sequence and principle of execution, you know how to implement it. The following is the implementation of the rewrite object user, overriding the Equa

Topic Link: [POJ 1797]heavy TRANSPORTATION[SPFA] The analysis: For all paths from point 1 to N, the maximum size of the smallest capacity on the path. Ideas for solving problems: will be the shortest way of thinking change on the line. The Dis[i] Array records the smallest road capacity on the road from point 1 to I. Note Initialization of the DIS array. Personal experience: It was written because it was stuck in the initialization and tried several t

JS Array to heavy Four algorithms to achieve this goal: Array.prototype.unique1 = function () { var n = [];//A new temporary array for (var i = 0; i { //If Part I of the current array has been saved in a temporary array, skip, //or push the current item to the temporary array if (N.indexof (this[i) = = 1) n.push (this[i)); } return N; } Array.prototype.unique2 = function () { var n = {},r=[];//n is a hash table, r is a temporary

There are many ways to weight an array, in the end which is the most ideal, I do not know. So I tested the effect and performance of the next array to go heavy. Test 100,000 data, the code and the approximate time is as follows. What kind of method to use, according to the actual situation and decided. /* Method One: 1, ' 1 ' will be considered the same; All hash objects, such as: {x;1},{y:1} will be considered to be the same//10ms * * * array

At the weekend, I was invited to share the "windmill" architecture presentation at the Hacker News Shanghai Gathering and Ruby Shanghai event, thanks to the organizers and venue providers. The Windmill project began in November 2011, before it was called pragmatic.ly. From the first day we basically set the approximate framework structure, looking back today, basically the whole structure has no change, can be regarded as a very mature and suitable for the era of the scheme. In the last year o

mergephonelist using Phonenumberutils.compare () and data1.Finally, the size and onesimanrcount+1 of the mergephonelist are compared.If Mergephonelist.size () >onesimanrcount+1, it is considered not to merge, not new mergecontacts. Contactsinfo (1..1) Mergecontacts (1..N) 2. Check Heavy ok,show mergecontactactivity Show the UI according to Mergecontacts's list.The Mergecontacts mchecked property corresponds to whether the checkbox is selected.Click t

with webmaster tools to find out the weight is 2, Webmaster Tools also hint from Baidu source traffic has more than 100, this is not your website traffic must have more than 100, more accurate traffic or according to some statistics is accurate. For example, AdSense use more Baidu statistics, I have a website Baidu weight is 2, three months of time, this thought happy, but from the statistics of Baidu, one day the highest independent IP is also more than 60, from the source of Baidu traffic is

production environment, thanks to the flexibility provided by the pluggable storage engine API of MongoDB 3.0, which provides easy-to-use, high-level application development, persistence, and horizontal extensibility for MongoDB.MongoDB 3.0 also provides Enterprise Ops Manager management tools to manage large-scale mongodb architectures.MongoDB 3.0 will be open to everyone in March, we are doing some final preparatory work, if you are interested in this version you can first visit our previous

;Mysql>Mysql> SELECT * FROM temp ORDER BY C1 desc limit 10;+------+------+------+| C1 | C2 | C3 |+------+------+------+| 4 | 5 | 6 || 4 | 5 | 6 || 4 | 5 | 6 || 4 | 5 | 6 || 4 | 5 | 6 || 4 | 5 | 6 || 4 | 5 | 6 || 4 | 5 | 6 || 1 | 2 | 3 || 1 | 2 | 3 |+------+------+------+Rows in Set (0.00 sec)Mysql> Ctrl-c--exit!Aborted11 Delete Table Tempmysql> drop Table temp;Query OK, 0 rows affected (1.59 sec)mysql> drop table A;Query OK, 0 rows affected (0.55 sec)mysql> drop table B;Query OK, 0 rows affected

(whether or not) columnUPDATEnewtableSETIspass= Case whenWrittenexam>= - andLabexam>= - Then 1 ELSE 0 END--SELECT * FROM newtable--can be used for debugging /*--------------Show the final pass of the exam----------------*/SELECTName=Stuname, School Number=Stuno, written results= Case whenWrittenexam is NULL Then 'Lack of test' ELSE Convert(varchar(5), Writtenexam)END, machine test results= Case whenLabexam is NULL Then 'Lack of test'

Label:There are terabytes of tables with table data as follows: Id Name Age Time 1 Tom 20 2012-12-12 2 John doe 22 2013-01-12 3 Harry 22 2014-04-23 4 Tom 20 2014-04-22 5 Tom 20 2011-12-12 6 John doe 22 2015-01-12 Issue 1: Get Data name, age and remove duplica

# # # #在日志组中每个日志文件的大小, innodb_log_files_in_group=3 ### #在日志组中文件的总量, usually 2-3 is enough innodb_max_dirty_pages_pct=90 ### #在InnoDB缓冲池中最大允许的脏页面的比例. innodb_lock_wait_timeout=120### #在被回滚前, How long a InnoDB transaction should wait for a lock to be approved. [mysqldump] Quick max_allowed_packet=16m [MySQL] no-auto-rehash [myisamchk] Key_buffer_size =512m sort_buffer_size=512m read_buffer=8m Write_buffer=8M [ Mysqlhotcopy] interactive-timeout [Mysqld_safe] open-files-limit=8192 ### #每个程序允许打开文件的数量T

Label:1, Query deduplication dataSELECT *, COUNT (distinct name) from the table group by name2. Avoid duplication of dataIf the uniqueness of a record is distinguished by a primary key primary or a unique index, it is possible to avoid duplicate insert records:Insert ignore into table_name (EMAIL,PHONE,USER_ID) VALUES (' [email protected] ', ' 99999 ', ' 9999 '), so when there are repeatedThe record will be ignored, after execution returns the number 0, there is another application is to copy th

Select A.id,a.ssmz, (select count (SSMZ) from Shop_tourist_key b where b.ssmz=a.ssmz) as CountFrom Shop_tourist_key a WHERE a.ssmz are not null GROUP by A.SSMZ LIMIT 0, 3;Select A.id,a.ssmz, (select count (SSMZ) from Shop_tourist_key b where b.ssmz=a.ssmz) as CountFrom Shop_tourist_key a where ISNULL (A.SSMZ) =false GROUP by A.ssmz ORDER by Count DESCLIMIT 0, 3;Select A.id,a.ssmz, (select count (SSMZ) from Shop_tourist_key b where b.ssmz=a.ssmz) as Count,COUNT (distinct A.SSMZ) from Shop_tourist

Tags: name to go heavy2015-12-14When you make a TextBox drop-down box, you need to display the kind of messages stored in the database. But because the same message is constantly in the insert, so caused by the name of a bad fetch message.For example a scheme has B and c two messages, and both messages are always inserted, but the insertion time is not the same, then there are two ways:One: Only the names of the B and C messages are taken out. You can use the select DISTINCT name from tableTwo:

, it's available when deserialized. Return GetType (). ToString () + ", 1123," + Text; }////////////////////private void Menuitem2_click (object sender, System.EventArgs e) {////////////////////MessageBox.Show ("This was to demostrate the menu item has been SUCCESSFU Lly merged into the main form. Form text= "+ Text"); }////////////////////private void Menuitemchecktest_click (object sender, System.EventArgs e) {////////////////////}////////////////////protected overr

// After studying the half-host model, I finally figured out that // writing this test code can demonstrate the effect of class CConvert {public: CConvert () {m_nValue = 10;} // reload () operator int operator (); // overload int forced type