unspsc classification

in the tireless practice, the time can let himself to another level (2) Think too much, do too little: want to see everything, nothing to look carefully, heard, they do not use How to get the law: (1) Deliberate practice: Split to the most fine grain size, for each of the intentional contact, so that they always stay in the not very comfortable learning state (2) The best sense of humor: learning is very dull, time tension will make people grumpy, mentality imbalance, have to have the a

is called.In the example we can just pass the required function name and age, and the printed Kwargs is an empty dict.def Student (name, age, ** Kwargs) :print('name:', name, ' Age : ' ' Other : ' , Kwargs) student (' Xiaomi ', 15)>>>name: Xiaomi age:15 other: {}Pass multiple keyword argumentsStudent (' Xiaomi ', ' city='Beijing', grade=3and other: { 'City'Beijing'grade' : 3}If there is a dict in advance, we can pass the arguments similar to the value of the variable parameter:KW = {'city''

functionGeneratetree () {$items=Array( 1 =Array(' id ' = 1, ' pid ' = + 0, ' name ' = ' Anhui '), 2 =Array(' id ' = 2, ' pid ' = + 0, ' name ' = ' Zhejiang '), 3 =Array(' id ' = 3, ' pid ' = 1, ' name ' = ' Hefei '), 4 =Array(' id ' = 4, ' pid ' = 3, ' name ' = ' Changfeng County '), 5 =Array(' id ' = 5, ' pid ' = 1, ' name ' = ' Anqing '), ); $tree=Array(); foreach($items as $item){ if(isset($items[$item[' PID ']])){ $items[$item[' PID '] [' son '] [

This article mainly introduces the PHP recursive method to implement infinite classification instance code, the need for friends can refer to the following Array: nbsp; Code as follows: $items = Array (nbsp;array (' id ' =gt; 1, ' pid ' =gt; 0, ' name ' =gt; ' Level One '), nbsp;array (' id ' =gt; 1 1, ' pid ' =gt; 0, ' name ' =gt; ' www.jb51.net level '), nbsp;array (' id ' =gt; 2, ' pid ' =gt; 1, ' name ' =gt; ' two class '), nbs P;array (' id ' =

This article describes the Python based on urllib implementation of Baidu Music classification download mp3 method. Share to everyone for your reference. The implementation methods are as follows: ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 #!/usr/bin/env python #-*-coding:utf-8-*-import urllib import re baseurl = "http://music.baidu.com" url = "Http://musi c.baidu.com/search/tag?key= Classic "html = Urllib.urlopen (URL). Read

>#div{width:100%;Height:111px;Background-image:URL ();background-position:34% 0} style>Head>Body> DivID= "Div">Div>Body> bg-position　　　　Background-size Picture size ratio ZoomBackground: Color picture tile Position SizeSummarize the question:　　1.text-indent Indent property, can only be used on block labels, row labels such as span are not availableWorkaround: Add Display:inline-block to span and change the property to the inline block label.2. Large div set Small div, if the parent

This article mainly introduces the JavaScript frame Design Framework Classification and the main functions of the relevant data, the need for friends can refer to the The current JavaScript framework can be divided into 5 categories, from internal architectures and concepts. The first is a namespace-oriented class library or framework, if you create an array with the new array (), generate an object with the new objects (), the full Java style, so w

Get all the subclass methods below the taxonomy: static function Getmenutree ($arrCat, $parent _id = 0, $level = 0, $all =true) { static $arrTree;// Use static instead of global if (! $all) $arrTree = '; if (empty ($arrCat)) return FALSE; $level + +; if ($level = = 1) $arrTree [] = $parent _id; foreach ($arrCat as $key = + $value) { if ($value [' parent_cid '] = = $parent _id) { //$value [' Level ' ] = $

following is the I want to introduce to you friends array reorganization based on the category field Copy Code code as follows: //need to reorganize the array $arrar =array (); $array []=array (' ItemID ' => 110126866896, ' CategoryID ' =>111); $array []=array (' ItemID ' => 120126866896, ' CategoryID ' =>112); $array []=array (' ItemID ' => 130126866896, ' CategoryID ' =>113); $array []=array (' ItemID ' => 140126866896, ' CategoryID ' =>114); $arr

[] = $row [' name '];}return $adata;} /*** For display classification* @param array $data = array (' ID ' => primary key, ' root ' => name) two Select a*/function Display_tree ($data) {$id = $data [' id ']? Intval ($data [' ID ']): ';$root = $data [' Root '];if (! $id ! $root) return; $sql = $id? "Select LfT, RGT from the Where id = ' {$id} ';": "Select LfT, RGT from tree where name = ' {$root} ';"; $result = mysql_query ($sql); $row = Mysq

Thinking Analysis: Effect: When the page is loaded, using AJAX asynchronous back to the request data, loading a class of goods, when the choice of a class of goods loaded two-class goods, the choice of two-class goods loaded three-class goods. Realize: 1, when the data load PID 0 of merchandise, and dynamically create option to append items to the first level menu, and set value 2, when the choice of the first level of goods loaded pid= the current ID of the merchandise, and create option to

shell)A common omission is to forget to write the Export command in the config file, but only write xxx=abc, which is a local variable rather than an environment variable (that is, a variable that is used only in the current script). At this point, if it is written in. Profile, then the login is invalidated, so the shell is not the echo of this variable. Of course, if you are in this shell, source. Profile, again. If it is written in the. BASHRC, it can still be echo in the shell (because it wi

language is not a dynamic language" and "the language is the type of security" is completely no connection between!For example: Python is a dynamic language and is a strongly typed definition language (type-safe language); VBScript is a dynamic language and is a weak type definition language (type unsafe language); Java is a static language and is a strongly typed definition language (type-safe language).Content reference:http://www.cnblogs.com/alex3714/articles/5465198.htmlIf there is infringe

Data properties Storage model Update model Access model Digital Scalar/Atomic Type Immutable types Direct access String Scalar/Atomic Type Immutable types Order List Container Variable type Order Meta-group Container Immutable types Order Dictionary Container Variable type Mapping The update model can be immutable, depending on t

Code:Effect:Introduced:A very long article, if there is a suitable small title, you can quickly to the content of the general understanding. In HTML, the tags used to denote headings are: HTML Learning (iii) Classification learning

Machine Learning Algorithm Evaluation criteria: accuracy, speed, robustness (less noise impact), scale, and explanatory.1. Decision Trees Decision Tree: The decision tree is a tree structure similar to a flowchart where each internal node represents a test on an attribute, each branch represents an attribute output, and each leaf node represents the distribution of a class (label) or class. The topmost layer of the tree is the root node.2, Information entropy: the greater the uncertainty of one

1 What is completenessIf the algorithm has more than one branch, make sure that each branch is gone. This time if you do not tidy up their own confused, programming is prone to errors. To tidy up clearly.2 What's going to happen to the completeness of the problemWhen the trend of the algorithm is affected by the value of 2, 3 and more variables, it will appear to be divided into several branches to consider, resulting in complete problems.For example, 3 variables can be true and false, then ther

function getSonLists($upid=0,$space=‘‘){ $icon = array( ‘ │‘, ‘ ├─‘, ‘ └─‘ ); //格式化的字符 $category_type = $this->category_type; $map[‘up_id‘] = array(‘eq‘,$upid); // $map[‘id‘] = array(‘neq‘,1); $lists = M(‘Category‘)->where($map)->field(‘id,catname,up_id,status,sort,model_id,path,type‘)->order(‘sort asc,id asc‘)->select(); $n = count($lists); $cat_all = array(); if($n){ $m=1; for($i=0;$ithinkphp Simple and Infinite classification implementation

Header ("content-type:text/html; Charset=utf-8 ");/**** @category Contry_category to achieve an infinite level classification, similar to the division of categories, commonly used in column navigation**//**+-------------------------------------------------------------------------------+| ID Name Category ID || 1 China 0 || 2 Beijing 1 || 3 Shanghai 1 || 4 USA 0 |* 5 New York 4 ** 6 Washington 4 ** 7 California, 4 *+------------------------------------

blank, line break, comment. 9. use link instead of @import way to import the style;JavaScript Section1. Use as few global variables as possible;2. Use the event broker to bind events, such as binding events on the body to proxy;3. Avoid frequent manipulation of DOM nodes;4. Do not use eval;5. Reduce object lookups, such as a.b.c.d , which is very expensive to find, define it in variables as much as possible;6. Delete the duplicate JS;Server section1. Try to merge CSS,JS files, or write them dir