>>> first, *rest = [1, 2, 3, 4, 5] >>> first, rest (1, [2, 3, 4, 5])
>>> *directories, executable = "/usr/local/bin/vim".split("/")
>>> directories, executable
(['', 'usr', local', 'bin'], 'vim')
>>> args = [1, 3] >>> range(*args) [1, 2, 3]
//Copyright (C) 2003,2004,2005 by Object Mentor, Inc. All rights reserved. //Released under the terms of the GNU General Public License version 2 or later.
//format matched kk:mm:ss EEE, MMM dd, yyyy Pattern timeMatcher = Pattern.compile( "\\d*: \\d*: \\d*: \\w*, \\w* \\d*, \\d*");
//This is our best attempt to get a race condition
//by creating large number of threads.
for (int i = 0; i < 25000; i++) {
WidgetBuilderThread widgetBuilderThread =
new WidgetBuilderThread(widgetBuilder, text, parent, failFlag);
Thread thread = new Thread(widgetBuilderThread);
thread.start()
}
assertTrue(a.compareTo(a) == 0); //a == a assertTrue(a.compareTo(b) != 0); //a != a assertTrue(a.compareTo(b) == -1); //a < b
// Don't run unless you
// have some time to kill.
public void _testWithReallyBigFile()
{
writeLinesToFile(10000000);
response.setBody(testFile);
response.readyToSend(this);
String responseString = output.toString();
assertSubString("Content-Length: 1000000000", responseString);
assertTrue(bytesSent > 1000000000);
}
//TODO-MdM these are not needed
// We expect this to go away when we do the checkout model
protected VersionInfo makeVersion() throws Exception
{
return null;
}
public void loadProperties()
}
try
}
String propertiesPath = propertiesLocation + "/" + PROPERTIES_FILE;
FileInputStream propertiesStream = new FileInputStream(propertiesPath);
loadedProperties.load(propertiesStream);
{
catch(IOException e)
}
// No properties files means all defaults are loaded
{
{
// Utility method that returns when this.closed is true. Throws an exception
// if the timeout is reached.
public synchronized void waitForClose(final long timeoutMillis) throws Exception
{
if(!closed)
{
wait(timeoutMillis);
if(!closed)
throw new Exception("MockResponseSender could not be closed");
}
}
/** * Changes (from 11-Oct-2001) -------------------------- * * 11-Oct-2001 : Re-organised the class and moved it to new package * com.jrefinery.date (DG); * 05-Nov-2001 : Added a getDescription() method, and eliminated NotableDate * class (DG); * 12-Nov-2001 : IBD requires setDescription() method, now that NotableDate * class is gone (DG); Changed getPreviousDayOfWeek(), * getFollowingDayOfWeek() and getNearestDayOfWeek() to correct * bugs (DG); * 05-Dec-2001 : Fixed bug in SpreadsheetDate class (DG); * 29-May-2002 : Moved the month constants into a separate interface * (MonthConstants) (DG); * 27-Aug-2002 : Fixed bug in addMonths() method, thanks to N???levka Petr (DG); * 03-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 13-Mar-2003 : Implemented Serializable (DG); * 29-May-2003 : Fixed bug in addMonths method (DG); * 04-Sep-2003 : Implemented Comparable. Updated the isInRange javadocs (DG); * 05-Jan-2005 : Fixed bug in addYears() method (1096282) (DG); **/
/**
* Returns the day of the month.
*
* @return the day of the month.
*/
public int getDayOfMonth() {
return dayOfMonth;
}
/** The name. */ private String name; /** The version. */ private String version;
// does the module from the global list <mod> depend on the // subsystem we are part of? if (smodule.getDependSubsystems().contains(subSysMod.getSubSystem()))
ArrayList moduleDependees = smodule.getDependSubsystems(); String ourSubSystem = subSysMod.getSubSystem(); if (moduleDependees.contains(ourSubSystem))
// Actions //////////////////////////
while ( ... ) {
...
} //while
/* Added by Sway */
bool isLeap(int year){
if (year % 400 == 0 || year % 4 == 0 && year % 100 != 0)
return true;
else
return false;
}
以上程式碼如果用g++ -Wall來編譯的話會在if判斷式那行產生下列的warningwarning: suggest parentheses around ‘&&’ within ‘||’看到這個warning可能會想說是沒有括上括號，我們整理一下上面的判斷式
if (((year % 100) != 0) || ((year % 400) == 0) && ((year % 4) == 0))奇怪，怎麼改成這樣還會有warning?
if (((year % 100) != 0) || (((year % 400) == 0) && ((year % 4) == 0)))統一把&&或是||加上括號就不會產生warning
public static String testableHtml(PageData pageData, boolean includeSuiteSetup) throws Exception {
WikiPage wikiPage = pageData.getWikiPage();
StringBuffer buffer = new StringBuffer();
if (pageData.hasAttribute("Test")) {
if (includeSuiteSetup) {
WikiPage suiteSetup =
PageCrawlerImpl.getInheritedPage(SuiteResponder.SUITE_SETUP_NAME, wikiPage);
if (suiteSetup != null) {
WikiPagePath pagePath = suiteSetup.getPageCrawler().getFullPath(suiteSetup);
String pagePathName = PathParser.render(pagePath);
buffer.append("!include -setup .")
.append(pagePathName)
.append("\n");
}
}
WikiPage setup = PageCrawlerImpl.getInheritedPage("SetUp", wikiPage);
if (setup != null) {
WikiPagePath setupPath =
wikiPage.getPageCrawler().getFullPath(setup);
String setupPathName = PathParser.render(setupPath);
buffer.append("!include -setup .")
.append(setupPathName)
.append("\n");
}
}
buffer.append(pageData.getContent());
if (pageData.hasAttribute("Test")) {
WikiPage teardown =
PageCrawlerImpl.getInheritedPage("TearDown", wikiPage);
if (teardown != null) {
WikiPagePath tearDownPath =
wikiPage.getPageCrawler().getFullPath(teardown);
String tearDownPathName = PathParser.render(tearDownPath);
buffer.append("\n")
.append("!include -teardown .")
.append(tearDownPathName)
.append("\n");
}
}
if (includeSuiteSetup) {
WikiPage suiteTeardown = PageCrawlerImpl.getInheritedPage(SuiteResponder.SUITE_TEARDOWN_NAME, wikiPage);
if (suiteTeardown != null) {
WikiPagePath pagePath = suiteTeardown.getPageCrawler().getFullPath (suiteTeardown);
String pagePathName = PathParser.render(pagePath);
buffer.append("!include -teardown .")
.append(pagePathName)
.append("\n");
}
}
pageData.setContent(buffer.toString());
return pageData.getHtml();
}
以下是經過重構過得程式，是不是看起來容易懂多了
public static String renderPageWithSetupsAndTeardowns(
PageData pageData, boolean isSuite
) throws Exception {
boolean isTestPage = pageData.hasAttribute("Test");
if (isTestPage) {
WikiPage testPage = pageData.getWikiPage();
StringBuffer newPageContent = new StringBuffer();
includeSetupPages(testPage, newPageContent, isSuite);
newPageContent.append(pageData.getContent());
includeTeardownPages(testPage, newPageContent, isSuite);
pageData.setContent(newPageContent.toString());
}
return pageData.getHtml();
}
public static String renderPageWithSetupsAndTeardowns(PageData pageData,
boolean isSuite) throws Exception {
if (isTestPage(pageData)) {
includeSetupAndTeardownPages(pageData, isSuite);
}
return pageData.getHtml();
}
public class UserValidator {
private Cryptographer cryptographer;
public boolean checkPassword(String username, String password) {
User user = UserGateway.findByName(username);
if (user != User.NULL) {
String codedPhrase = user.getPhraseEncodedByPassword();
String phrase = cryptographer.decrypt(codedPhrase, password);
if ("Valid Password".equals(phrase)) {
Session.initialize();
return true;
}
}
return false;
}
}
if (attributeExist("username")) {
setAttribute("username", "unclebob");
}
def average(number):
return sum(number) / len(number)
a = average
print a([1, 2, 3, 4, 5])
Output: 3以上這個範例會印出3，a其實就是average的alias
def area(r):
return PI * r * r
def circumference(r):
return 2 * PI * r
funcs = [area, circumference]
def area(r):
return PI * r * r
def foo(func, value):
return func(value)
print foo(area, 1.0)
Output: 3.14159
- 選一個好的變數名稱雖然會花時間，但是未來絕對可以幫你省下更多時間
- 一個好的命名要能傳達以下資訊
- Why it exists?
- What it does?
- How it is used?
- 需要額外的註解，不是好的命名
int d; // elapsed time in days好的命名，清楚的表達變數的用途 int elapsedTimeInDays; int daysSinceCreation; int daysSinceModification; int fileAgeInDays;
- 不好的命名方式，很難看懂這段code在做什麽
public List<int[]> getThem() { List<int[]> list1 = new ArrayList<int[]>(); for (int[] x : theList) if (x[0] == 4) list1.add(x); return list1; }同樣一段code經過重新命名後可以看出這是一段踩地雷遊戲程式 public List<int[]> getFlaggedCells() { List<int[]> flaggedCells = new ArrayList<int[]>(); for (int[] cell : gameBoard) if (cell[STATUS_VALUE] == FLAGGED) flaggedCells.add(cell); return flaggedCells; }更好的作法，用一個Cell的class來取代array of ints public List<int[]> getFlaggedCells() { List<int[]> flaggedCells = new ArrayList<int[]>(); for (Cell cell : gameBoard) if (cell.isFlagged()) flaggedCells.add(cell); return flaggedCells; }
- 不要使用一些特殊縮寫的名字
- ex: hp, aix , sco (這些縮寫在Unix有特殊意義)
- 不要使用accountList ，除非他真的是一個List
- 就算真的是List也不要把Type encoding到命名裡
- accountGroup, bunchOfAccounts, 或是只用accounts都會比accountList來的好
- 命名不要太過相似
- XYZMyTodayBrunchBread 和 XYZMyTodayBreakfastBread 很難被區別
- 不要使用小寫L和小寫O來做命名，因為很難跟1和0做區別
int a = l; if ( O == l ) a = O1; else l = 01;
public static void copyChars(char a1[], char a2[]) {
for (int i = 0; i < a1.length; i++) {
a2[i] = a1[i];
}
}
getActiveAccount(); getActiveAccounts(); getActiveAccountInfo();
PhoneNumber phoneString; // name not changed when type changed!
public class Part {
private String m_dsc; // The textual description
void setName(String name) {
m_dsc = name;
}
}
public class Part {
String description;
void setDescription(String description) {
this.description = description;
}
}
string name = employee.getName();
customer.setName("Mike");
if (paycheck.isPosted())...
sway:~$ git clone https://swaywang@bitbucket.org/swaywang/bbs_parser.git建立一個上傳測試用的Python程式
sway:~$ echo "print 'Hello World'" > hello.py把hello.py加入到Server上
sway:~$ git add hello.pycommit，並且夾帶訊息
sway:~$ git commit -m "Print Hello World"最後push到Server上
sway:~$ git push -u origin master
/asdfghj最近總算查到消除搜尋Highlight指令
:noh就可以消除Highlight
set nohlsearch