how to start freelancing programming

PrivateCountdownlatch Downlatch; * $ PublicBoss (Countdownlatch downlatch) {Panax Notoginseng This. Downlatch =Downlatch; - } the + Public voidrun () { ASYSTEM.OUT.PRINTLN ("The Boss is waiting for all the workers to finish the job ..."); the Try { + This. downlatch.await (); -}Catch(interruptedexception e) { $ } $SYSTEM.OUT.PRINTLN ("The workers have finished their work, the boss began to check!") "); - }

1 #Debug shows that the guess input (heads, tails) and toss content (0,1) are inconsistent and need to be modified and toss Compared. 2 Importrandom,logging3Logging.basicconfig (level=logging. DEBUG, format='% (asctime) s-% (levelname) s-% (message) s')4Logging.debug ('Start of Program')5Guess ="'6n="' #Add a function n7 whileGuess not inch('Heads','Tails'):8 Print('Guess the coin toss! Enter heads or Tails:'

. You can also omit the in list, at which point the positional parameters are used.#!/bin/bashps3= "Favorite pet?" Select Var in Dogs Cats birdsdo case $var in Dogs) echo Dogs is my favorite pet break ;; Cats) Echo Cats is my favorite pet ;; Birds) Echo Birds is my favorite pet ;; *) echo none of my favorite pet ;; Esac BreakdoneCommon string matches:Shift CommandGenerally used for function or script parameter processing, especiall

Windows Network Programming-Winsock (1) Header file library of WinSock Winsock has two major versions: Winsock 1 and WinSock 2, both of which can run on all Windows platforms except Windows CE (Winsock ce only supports Winsock 1. When developing window network programs, Set Winsock2. H is included in the application, and the corresponding Connection Library is ws2_32.lib. The Code is as follows: # Include # Pragma comment (Lib, "ws2_32.lib ")

Android concurrent programming: (1) Basic knowledge-start and end of the 1.2 program, android1.2 All content in this section is original. If you need to reprint it, please indicate the source. Http://blog.csdn.net/manoel/article/details/38471825 Android is a multi-user, multi-task system. Multiple apps can be executed at the same time. switching between multiple programs does not have a significant delay.

BSD socket Quick Start manualDirectory Introduction Analogy (what is socket ?) Install your new phone number (how to listen ?) Dialing (how to call socket) Conversation (how to talk through sockets) Suspend (end) World Language (the language of communication is very important) The future is under your control (next step ?) IntroductionWhen you enter the mysterious world of UNIX, you will immediatel

Mind Mapping "Annotations"1. Control flow Statements　　1.1 Article statement [execute code block according to condition]1.1.1 If statement1.1.2 Else Statement1.1.3 ElseIf Statements[DEMO] (When conditions are large, note the order of the conditions)　　　　　　　　1.2 Loop statements1.2.1 While loop statement1.2.2 For Loop statement1.2.3 Break statement1.2.4 Continue statements[DEMO] (while and for loops can be used equivalently)　　　　2. Importing the module method　　[DEMO]3. Function parsing[DEMO]Python

Install the Python web. py framework and start programming from hello world, pythonweb. py Recently there was a small web project that wanted to use python as a favorite, but I felt chilling when I thought that I had been familiar with django before. Why? The configuration of Django is too complex and small projects are not suitable for the MVC development mode, so I turn to the web. py is a small web frame

Sword refers to the Java Implementation of offer programming questions-interview question 5 prints the linked list from start to end and offer from end to endTopic Description * sword refers to offer interview question 5: print the linked list from the end to the endEnter the head node of a linked list and print the value of each node from the end to the end. Solution 1: print the nodes in the traversal tab

1#!/usr/bin/env python3.52#Coding:utf-83#5.6.14#List of items for fun games5#given a dictionary that contains the item name and quantity, and prints out the quantity corresponding to the item6 7 Dict_stuff = {'Rope': 1,'Torch': 6,'Gold coin': 42,'Dagger': 1,'Arrow': 12} 8Print("5.6.1 Reference Answers") 9Print('='* 80) 10Print("Given dictionary:", Dict_stuff)11Print("Operation Result:") 12defDisplayinventory (Inventory):13Print("Inventory:") Item_total =015 forKvinchInventory.items ():16Print(

method, because the column length of the list is not equal, the outer loop of the number of newline should be the length of the child List. the forRowinchRange (0,len (grid[0)): * forColinchRange (0,len (grid)): $ #print (". join (grid[col][row]), End=")Panax Notoginseng Print(grid[col][row],end="') - Print() the + #the second method of implementation, a forRowinchZip (*grid): the forColinchRow: + #print (". join (col), End=") - Print(col,end="') $ Print()

import Pyautogui, time print (" press ctrl-c to Quit. " ) try : while True:time.sleep ( 10 1 , 0, Duration=0.25) time.sleep ( 10-1, 0, Duration=0.25 Except keyboardinterrupt: print ( Span style= "COLOR: #800000" > " \ndone. ) Python Programming Quick Start 18th Chapter Practical Project Reference Answer (18.4.1)

The code is as follows:The title means that a list of lists is displayed in a well-organized table by a function, with the right alignment of each columnTabledata = [[' Apples ', ' oranges ', ' cherries ', ' banana '], [' Alice ', ' Bob ', ' Carol ', ' David '], [' Dogs ', ' cats ', ' Moose ', ' goose ']‘‘‘Apples Alice DogsOranges Bob CatsCherries Carol MooseBanana David Goose‘‘‘#输出每一列右对齐 I don't think it should be the last line of string,#但是书上的不是啊, it bothered me

1 #! Python32 ImportOpenpyxl,os,glob3Os.chdir ('c:\\users\\administrator\\python35-32')4List=glob.glob ('*.txt')5 Print(list)6WB =OPENPYXL. Workbook ()7Sheet =Wb.get_active_sheet ()8columnnum=09 forFlienameinchlist:TenFile_object = open (str (fliename),'RB') Onealllines=File_object.readlines () Alinenum=0 -Columnnum + = 1 - forLineinchAlllines: theLineNum + = 1 -Sheet.cell (Row=linenum, column=columnnum). value= Line -Wb.save ('txttoexcel.xlsx')Python Pr