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Fifth chapter shell functions and Arrays

5.1 FunctionsFormat:Func () {command}Example 1:#!/bin/bashfunc () {echo "This is a function."} Func# Bash Test.shthis is a function.The shell function is simple, with the function name followed by a double parenthesis and the double curly brace.

JavaScript array detail (JS array depth parsing)

The Array object is a composite type used to store multiple values in a single variable, each of which can be of different value types.Ways to create an array object:New Array (); New Array (size); New Array (element0, Element1, ..., ELEMENTN);1.

Python Learning Notes

Tag: The value at the beginning of the specified ASSM format for statement date Var1.Python of built-in data structures(1) ListCreate: Created with a pair of curly braces, the element can be any type, for example: list={"Xiaozhang", 1001}, or it can

Map Principle and Its Implementation in MFC

I. Basic knowledge of Map Map, also known as Dictionary, is a form set of elements consisting of key and value. Generally, for map, the given key can be used to quickly retrieve the corresponding elements from the unit set. Therefore, when you need

Dynamic Array vector and list

Document directory Disadvantages of static Array Dynamic Array Usage of Vector in C ++ STL List usage in C # Disadvantages of static Array Array is a very large data structure. the first thing that comes to mind when you store a group of

Nginx source code analysis-linked list structure ngx_list_t

This blog (http://blog.csdn.net/livelylittlefish) posted the author (a wave) related research, learning content of the Notes, welcome to the majority of friends correct! Content 1. Linked List Structure 1.2 logical structure of ngx_list_t 2.1

Read and Write XML files in C #

Read:// Open a file (assuming that web. config is in the root directory)String filename = server. mappath ("/") + @ "webapplication1/Web. config ";Xmldocument xmldoc = new xmldocument ();Xmldoc. Load (filename ); // Obtain the list of top-level

Summary of reading and writing all XML nodes

Read: // Open a file (assuming that web. config is in the root directory) String filename = server. mappath ("/") + @ "webapplication1 \ WEB. config "; Xmldocument xmldoc = new xmldocument (); Xmldoc. Load (filename); // obtain the list of

Basic queue operation implementation

Queue) A queue is a typeFirst in first out (FIFO)Linear table. It only allows element insertion at one end of the table (team end/rear), while element deletion at the other end (team head/Front. The insert operation is called "join" or "enter", and

Removes duplicate values from the list.

 Method 1: Loop element deletion list order not maintained // Delete the repeated element public static void removeduplicate (list) {for (INT I = 0; I I; j --) {If (list. get (j ). equals (list. get (I) {list. remove (j) ;}} system. out. println

Cmap introduction and simple instances in VC ++!

I recently used a dictionary in MFC, so I won't check the information on the Internet. Summary:1. What is cmap?Map, also known as Dictionary, is an element list composed of a key and its corresponding element value. Element form set. Cmap is a

List set to remove duplicate data

[Conversion] Java list set to remove duplicate data 1. Loop all elements in the list and delete duplicates public static List removeDuplicate(List list) { for ( int i = 0 ; i i; j -- ) { if

Two ways to delete repeated elements in arraylist

1. Method 1: Java code /** List order not maintained **/ Public Static VoidRemoveduplicate (arraylist arllist) { Hashset H =NewHashset (arllist ); Arllist. Clear (); Arllist. addall (h ); } 2. Method 2: Java code /** List order

XML reading (1)

Hashtable for storage: Hashtable ht = new hashtable (); String orgcodepath = server. mappath (configurationsettings. deleetpath ["orgcodepath"]);// String orgcodepath = server. mappath ("http://www.cnblogs.com/template/home/orgCode.xml

Remove duplicate values from List

Remove duplicate values from the List (three solutions)Public static void main (string [] ARGs ){String [] AR = {"DD", "C", "DD", "FF", "B", "E", "E "};Arraylist list = new arraylist ();For (INT I = 0; I List. Add (AR [I]);}System. Out. println

Cmap Principle and Its Implementation in MFC (the map template does not have the function of sequential traversal)

It will use cmap, And the other basics will be easy to understand.The ing table class (cmap) is a template class in the MFC collection class, also known as "Dictionary". It is like a table with only two columns, one column is a keyword, And the

Example: Inherited apps:

Defines an array class that requires a constructor method, adds data, outputs a member method of data, and uses an array to implement dynamic memory allocation.On this basis, the following subclasses are defined:1) Sorting classes, implementing

Basic usage of Redis in PHP

Use AutoLoad to load the relevant library, this is the key torequire$file; Spl_autoload_register (function ($class) {$file = __dir__. ' /lib/predis/'. $class. PHP '; if (file_exists ($file)) {require $file; return true;}); /Configure the connected

How to add elements to the header and tail of the PHP array

The array_push () function regards the array as a stack and pushes the passed variables to the end of the array. the length of the array will increase as the number of incoming variables increases, returns the total number of new units in the array.

The next generation packet filtering framework after iptables is Nftables

The night has been deep, ready to tell the story about NetFilter, writing a little loose, because no draft, a bit with the consciousness of the flow, one go do not know is to boast or self-deprecating, right when a child wrote diary, childhood like

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