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Peace2"]}) use "$unset" to delete the key, no key to delete or error Db.users.update ( { "name": "Refactor" }, { "$unse T ": {" book ": 1} } ) use" $set "to modify the inline document Db.blog.insert ( {" title ":" Refactor's blog ", " Content ":" 　　　　Refactor ' s blog test ', ' author ': { ' name ': ' Refactor ', ' ' email ': ' [emailprotected] ' } } ) Db.blog.update ({"Author.name": "Refactor"},{"$set": {"Author.name": "Refactor2"}})Db.blog.findOne ({"title": "Refactor ' s Blog"})Add,

No, summarize the personal commonly used makefile template for later use.1. Compiling the dynamic library[Plain]View PlainCopy ############################################################# # Makefile for Shared library. # Compile the dynamic link library ############################################################# #set Your own environment option CC = g++ Cc_flag =-d_nomng-d_fileline #set Your Inc and Lib

This article illustrates the method of Python's implementation of hill sorting algorithm. Share to everyone for your reference. Specifically as follows: ? 1 2 3 4 5 6 7 8 9 10 11 12 13-14 def shellsort (items): Inc = Len (items)/2 while Inc:for I-xrange (len (items)): j = I temp = items[i] while J >= Inc and Items[j-inc] > Temp:items[j] = items[

(int m=0;m Console.Write ("{0}", Iarrary[m]);Console.WriteLine ();} }}Insert SortUsing System;Namespace Insertionsorter{public class Insertionsorter{public void Sort (int [] list){for (int i=1;i {int t=list[i];int j=i;while ((j>0) (list[j-1]>t)){list[j]=list[j-1];--j;}list[j]=t;}}}public class MainClass{public static void Main (){Int[] Iarrary=new int[]{1,13,3,6,10,55,98,2,87,12,34,75,33,47};Insertionsorter ii=new Insertionsorter ();Ii. Sort (iarrary);for (int m=0;m Console.Write ("{0

polymorphism, to help it achieve a bit. Using System; Namespace Shellsorter { public class Shellsorter { public void Sort (int [] list) { INT Inc; For (inc=1;incfor (; inc>0;inc/=3) { for (int i=inc+1;i{ int t=list[i-1]; int j=i; while ((J>

1. Pass value parameter (not pointer parameter): #include　 int　inc(int　x); int　main(void) { 　　int　num　=　1; 　　printf("%d\n",inc(num));　/*　2　*/ 　　printf("%d\n",num);　　　/*　1;　num　并没有改变,用作函数参数时只是复制过去　*/ 　　getchar(); 　　return　0; } int　inc(int　x)　{ 　　x++; 　　return　x; } 2. Address: Parameters are pointers, parameters are addresses #include　 int　

Reproduced1). Update ()CommandDb.collection.update (criteria, objnew, Upsert, Multi)Criteria:update query conditions, similar to those in the SQL update queryObjnew:update objects and some updated operators (such as $, $inc ... ) can also be understood as the SQL update query within the set after theUpsert: This parameter means that if there is no record of update, insert Objnew,true is inserted, default is False, not inserted.Multi:mongodb default is

name:liufang relational database in the where in the judgment condition, and post is relative to the SET statement after the execution content.The simplest thing to update is to use a new document instead of a matching document, which is suitable for a time when the pattern structure has changed significantly. As in the following document:{　　"name":"tyq",　　"age":22,　　“date”:newDate()}Modified to:{　　"name":"tyq", “age”:22, “friends”:”liufang”}Such as:modifierLet's talk about MongoDB's powe

PHP full source code for user authentication and Management -- Begin auth. inc -- $ Id = "xxxCOM "; If (! Isset ($ PHP_AUTH_USER )){ Header ("WWW-Authenticate: Basic realm =" $ id ""); Header ("HTTP/1.0 401 Unauthorized "); Require ('error. inc '); Exit; } $ Name = $ PHP_AUTH_USER; $ Pass = $ PHP_AUTH_PW; Require ("connect. inc "); $ Query = "select * from auth

Build a simple interaction website (2) 5.5 Counter. let's add a counter on the homepage. This example has been mentioned many times, but it is helpful to demonstrate how to read and write files and create your own functions. Counter. inc contains the following code: lt ;? * | A simple counter * functionget_hitcount ($ counter_file) {* build a website with simple interaction (2) 5.5 counters Let's add a counter to the homepage. This example has been

With Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies 5. phpMyAdmin Installation Step 1: extract phpmyadmin-3.3.3-all-languages.zip to/apache2/htdocs/, create a phpmyadmin folder, and put the compressed file in it to complete installation. Step 2: configure the config in the top-level directory of phpMyAdmin. inc. php. config does not exist by default. inc. PHP file, we