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: Ebin stores compiled binary files (with the extension beam) Include stores the files referenced in the program SRC stores source code files 2. Right-click SRC and select new module to create an Erlang file (the extension is ERL) Enter "HW" in Module name ". Note: The name must be in lowercase English or underline. Click Finish 3. Compile the print function Enter the following code Printhelloworld ()->IO: Format ("Hello world! "). OK. Wr
In Erlang, gen_tcp is used to write TCP programs, and GEN_UDP is used to write UDP programs. A simple example of a TCP server echo:Start_echo_server (){ok,listen}= Gen_tcp:listen (1234,[binary,{packet,4},{reuseaddr,true},{active,true}]),{ok,socket}=get_tcp:accept (Listen),Gen_tcp:close (Listen),Loop (Socket).Loop (Socket),Receive{Tcp,socket,bin}Io:format ("serverreceived binary = ~p~n", [Bin])Str= binary_to
Erlang gen_tcp is used to write a TCP program, GEN_UDP to write a UDP program. A simple example of a TCP server echo : Copy Code code as follows: Start_echo_server ()-> {ok,listen}= Gen_tcp:listen (1234,[binary,{packet,4},{reuseaddr,true},{active,true}]), {ok,socket}=get_tcp:accept (Listen), Gen_tcp:close (Listen), Loop (Socket). Loop (Socket)-> Receive {Tcp,socket,bin}-> Io:format ("se
SD (). 4) covariance (covariance), also divided into the total covariance and sample covariance, the difference is the same as above. The function in the R language is cov (). Note that when there is an empty element (NA) in the vector, such as a row in a sparse matrix, cov (x, Y, use= ' complete ') is required. The variance can also be seen as a special case of covariance, i.e. VAR (x) =cov (x,x). Here only to list the calculation formula, look at s
Calculation attribute usage in vue and vue instance method example, vue instance This article describes how to use vue computing attributes and how to use vue instances: Calculation attribute Expressions in templates are very convenient, but they are only used for simple operations. The template is used to describe the view structure. Adding too many logic in the
World of Warcraft calculation formulas officially announced (taking warrior and Sunday as an example) I. Attack intensity (Attack Power, AbbreviationAP) Warrior/Paladin(Warrior/Server guard ):AP =Role level* 3 +Power* 2-20(For example, you50Level, strength is100Your attack intensityAPYes50Multiplication3Add100Multiplication2Minus20, And finally equal330Is it
This tutorial mainly uses the Photoshop detailed example to parse the calculation command principle, through the channel uses the computation command to calculate the exact selection, applies the image command to adjust the color. Different from hue/saturation, color balance color adjustment mode. Blending mode is the soul of the Computing command, using the calculatio
This article mainly introduces the shape calculation matrix method in Python, and involves implementation skills related to Python mathematical operations. if you need it, refer to the following article to introduce the shape calculation matrix method in Python, implementation skills related to Python mathematical operations. For more information, see This document describes how to calculate the shape ma
Python OpenCV histogram calculation and display method example, pythonopencv This article introduces how to use OpenCV Python to calculate histograms, and briefly introduces how to use NumPy and Matplotlib to calculate and draw histograms. The background knowledge and usage of the histogram are omitted. Here we will introduce the method directly. Calculate and display the Histogram Like in C ++, The OpenCV
SD ().4) Covariance (covariance),Also divided into the total covariance and sample covariance, the difference is ibid. The function in the R language is cov (). Note that when there is an empty element (NA) in the vector, such as a row in a sparse matrix, cov (x, Y, use= ' complete ') is required. The variance can also be seen as a special case of covariance, i.e. VAR (x) =cov (x,x).Here only to list the calculation formula, look at some dizziness, s
) {unsignedintCrc32_data =0xFFFFFFFF; for(unsignedinti =0; I! = Len; ++i) {unsignedintt = (crc32_data ^ buf[i]) 0xFF; Crc32_data= ((Crc32_data >>8) 0xFFFFFF) ^Crc32_table[t]; } return~Crc32_data;}intMain () {unsignedChari[8] = {0x00,0x00,0x00,0x00,0x06,0x0d,0xd2,0xe3}; Init_crc32_table (); printf ("BUFFER i ' s crc32:0x%x\n", GetCRC32 (i,8)); printf ("CRC32 table:\n"); for(intI=0;i the; i++) {printf ("0x%8x\t", Crc32_table[i]); if((i+1)%8==0) printf ("\ n"); }}Manual
Java-based loan amount calculation function example: java loan amount This example describes the loan amount calculation function implemented by Java. We will share this with you for your reference. The details are as follows: Problem and code: /** Copyright (c) 2015, Southwest University, School of information and des
Example of how PHP implements time comparison and time difference calculation. This article describes how to implement time comparison and Time Difference Calculation in PHP. We will share this with you for your reference. The details are as follows: Example 1: Running result: Zero1 time: 12: 18: 39zero2 time: 21: 07:
Today look at learning%d,%s,%f and other usages. %d is a placeholder integer, and%s is a placeholder, and%f is a floating-point number. The following example of study is said to enter the name, age, job, salary. And give a calculation of how long it will take to retire at the age of 65. The focus is on using placeholders for print (msg). Additional spare is attached to the back.#__author__: "Gabriel Jason"#
everyone to understand, I used a simpler statement, see the code: After running the above code, you can figure out that the ID of the check code is 9. You can try the top 17 of your ID card. If you understand the above example, you can merge some of the statements of this code, remove unnecessary variables, and optimize for the following code: The above is a small series to introduce you to the PHP ID code calc
Recently did the project encountered the issue of equal principal and equal principal and interest, if you do not understand the two ways to look at this point or skip the code directly, this code can also be used for the development of mortgage calculator project. Matching principal and Interest Calculation formula: (loan principal x month rate X (1+ month rate) ^ repayment months)÷((1+ month interest rate) ^ repayment months -1) Equal principal
(mcommentui.remove (0));} Initcommentview ();} else {//The next page has the remaining space, that is, the page is the penultimate page Mcommentrecord.push (record_temp); currentpage = CurrentPage + 1;comment_ Content.removeallviews (); while (!mcommentui.isempty ()) {Mcommentcache.push (mcommentui.remove (0));} Showlastpage ();} Comment_pageup.setfocusstatus (True);}}}5. Save State on next page click to use as recovery. (save with stack, stack out stack)Package Com.helios.module.commentdata;im
Example of structure size calculation//default alignment number is 4#include Example of "C language" structure size calculation
This article mainly introduces the method of shape computing matrix in Python, which involves the implementation of Python mathematical operations, and the need for a friend can refer to the following This example describes the method of shape calculation matrix in Python. Share to everyone for your reference, as follows: When you see the machine learning algorithm, you notice the shape
, see the code: After running the above code, you can figure out that the verification code for the ID card is 9. You can try the top 17 of your ID card. If you understand the above example, you can combine some of the statements in this code, remove unnecessary variables, and optimize the following code: The above is a small set to introduce the PHP ID check code calculation me
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