filemaker basics

Data Structure BASICS (1): Data Structure Basics Simple implementation of Swap // C language (by-pointer): template // C ++ special method (by-reference): template Summary: Although we have implemented swap by ourselves, we recommend that you use the std: swap () function that has been implemented by C ++ STL. It is stored in the namespace std, use the following Bubble-Sort) Algorithm idea: Scan data

Data Structure BASICS (12) and data structure basics 12 Features of two-way linked list operation: (1) "query" is the same as a single-chain table; (2) When "insert" and "delete", you must modify the pointer in both directions. However, for a two-way cyclic linked list, inserting at the end of the table is very fast. It only takes O (1) time, because there is a pointer to the front, therefore, the two-way c

Data Structure BASICS (6): Data Structure Basics Stack is a linear table that only allows insert or delete operations at one end. It features: first-in-first-out (FILO)/Second-in-first-out (LIFO ); Stack VS. Queue The stack and queue are both dynamic sets, but in the stack, you can remove the recently inserted one: the stack implements a kind of "last-in, first-out) similarly, in the queue, the elements th

Data Structure BASICS (7): Data Structure Basics Queue A queue is also a linear table with limited operations. It can be inserted only at one end of the table and deleted at the other end of the table. it is characterized by "first-in-first-out (FIFO)", which is also known as the first-out linear table, simple queue: Cyclic queue There is an inherent deficiency in the ordered queue, that is, the space uti

Data Structure BASICS (4): Data Structure Basics Fast sorting is the most popular and the fastest Sorting Algorithm (C ++ STL's sort function is to implement fast sorting); quick sorting) it is an improvement for Bubble sorting. Proposed by C. A. R. Hoare in 1962. Its basic idea is: Split the data to be sorted into two independent parts by one sort, and all the data in one part is smaller than all the data

MongoDB BASICS (9) sharding and mongodb Basics Sharding stores data on multiple servers. Mongodb uses sharding to support deployment of very large datasets and high throughput operations. The capabilities of a single server are limited in various aspects, such as CPU, IO, RAM, and storage space. To solve the expansion problem, the database provides two methods: vertical expansion and sharding. Vertical Sc

Lua basics [5] I/O file operations, lua Basics -- [Lua file operation-related I/O] ---- You can specify to open a file in a specific directory. If the file does not exist, -- lua will help us create this file under the directory you specified, provided that the directory exists -- [we should also master the file writing mode; the following write mode is described: "r" Mode: Read mode (In this mode, only con

Java syntax BASICS (Summary), java syntax basics Summary 1. Keywords: words with special meanings given by a language. Reserved Words: Actually, words that have not been given a special meaning but will be used in the future. 2. identifier: it is actually a custom term in the program. For example, class name, variable name, and function name. Contains 0-9, a-z, $, and ,_; Note: 1), cannot begin with a numbe

Linux basics [Article 9] and linux basics Article 9 Architecture of adding three disks to the server Note: 1. linux caches the physical memory that is not used by the system. Therefore, 859 is not the actual memory of the system. 2. The real available system memory is 921. 3. buffers is the write buffer, and sync writes the buffer data to the disk. 4. the cache is the buffer for reading data. 5. The hard

Linux BASICS (1), Linux BASICS ( 1. Five methods available for installing linux 1. CD2. Hard Disk3. NFS Image4. FTP5. HTTP There are two scenarios for hard disk installation: A. It is installed on Win System B. The installation is started from other Linux This section describes how to install Windows in most people. The second method has not been called. 1. Install the system --- RedHat 9.0, (similar to tho

TCP/IP BASICS (I), tcpip Basics 1. Architecture and main protocols of TCP/IP protocol family The TCP/IP protocol family is a layer-4 protocol system. Data link layer: implements network drivers for Nic interfaces to process data transmission on physical media (such as Ethernet and Token network. The two common protocols on the data link layer are ARP (Address Resolve Protocol) and RARP (Revers Address Reso

Oracle BASICS (1), Oracle BASICS ( Oracle Database System is a group of software products with distributed databases as the core provided by Oracle in the United States. It is currently the most popular Client/Server) or one of the databases in the B/S architecture. For example, Oracle database is the most widely used database management system in the world. As a common database, it has complete data manage

[Java Basics] common knowledge accumulation (1), java basics Accumulation 1. Difference Between = and equals: difference between null and "" 2. 15 top-level Java multi-thread Interview Questions and answers (1) Use of join in a thread In many cases, the main thread generates and starts a subthread. If a large number of time-consuming operations are required in the subthread, the main thread usually ends bef

Powerful JQuery (1)-basics, jquery-Basics JQuery is an excellent Javascript framework and a lightweight js library. Using jQuery will greatly improve the efficiency of writing javascript code and make the written code more elegant and robust. After learning jquery, We are equivalent to the shoulders of giants. I will introduce jquery in three blogs. This blog will introduce jquery's basic syntax, intelligen

Linux BASICS (6) and linux Basics I. Samba Service The Samba service is mainly used to share files with Windows users on Linux servers. Perform the following five steps to configure the server: 1. Prepare the environment 1) disable the firewall systemctl stop firewalld 2) temporarily disable selinux sentenforce 0 Or disable selinux permanently in the configuration file. Vim/etc/sysconfig/selinux = disabled

Java syntax basics 1: java syntax Basics Basic Java code format All program code in Java must exist in a class. class is defined using the class keyword. Some modifiers can be provided before the class. The format is as follows: Modifier class Name { Program code } Note: 1. Java is strictCase Sensitive. 2. A continuous string in a Java program cannot be written in two separate rows. Java program comments T

PLSQL programming basics, control statements, exception details, plsql programming Basics Basic PL/SQL programmingI,PL/SQL Overview1.PL/SQL Introduction PL/SQL (Procedural Language) is a programming Language that combines with Structured Query Language (SQL). It is an extension of SQL. It supports multiple data types, such as large objects and Collection types. It can use control structures such as conditio

HTML/CSS basics and htmlcss Basics HTML: HyperText Markup Language (HyperText Markup Language). Unlike the programming Language, HyperText Markup Language only recommends the browser to display webpage content in any way or structure. It is the basic architecture of a webpage. CSS: Cascading Style Sheet is a stacked Style sheet (Style sheet for short). It is a webpage page layout Style standard. It makes up

IOS development UI basics-Button Basics 1. Simple Description Generally, when you click a control, all the buttons will be responded accordingly. Buttons provide many functions, including displaying text and images, and adjusting the positions of internal images and texts at any time. 2. Three buttons Normal) Default) Corresponding enumerated constant: UIControlStateNormal Highlighted) When the button is p

Linux basics-linux software management basics: YUM, linuxyumYUM software management YUM (yellowdog Updater, modified) is an RPM front-end program designed to automatically resolve RPM dependency issues. Its features are as follows:Automatically resolves DependenciesYou can group the RPM and install the RPM based on the group.Introduces the concept of warehouse and supports multiple warehouses.Easy Configura