Druid可以做什么？1)可以监控数据库访问性能，Druid内置提供了一个功能强大的StatFilter插件，能够详细统计SQL的执行性能，这对于线上分析数据库访问性能有帮助。
2)替换DBCP和C3P0。
Druid提供了一个高效、功能强大、可扩展性好的数据库连接池。
3)数据库密码加密。
直接把数据库密码写在配置文件中，这是不好的行为，容易导致安全问题。
DruidDruiver和DruidDataSource都支持PasswordCallback。
4)SQL执行日志，Druid提供了不同的LogFilter，能够支持Common-Logging、Log4j和JdkLog，你可以按需要选择相应的LogFilter，监控你应用的数据库访问情况。

BlockchainconceptsandtheHyperledgertechnologiesarehottopics.Hyperledgerisanopensourceprojecttocreateprivateblockchainapplicationsfordifferentdomainsincludingfinance,banking,supplychain,IoTandmuchmore.ThisbookwillbeaneasyreferencetoexploreandbuildblockchainnetworksusingHyperledgerservices.ThisbookwillstartwithexplainingtheblockchainevolutionandthenproceedtoanoverviewoftechnologieslikeEthereum,R3Corda,Coco,andHyperledger.WewilllearnhowtosetupandlaunchHyperledgerFabricinBluemix.WewilllookintothearchitectureandthecomponentsofHyperledgerFabricwhichareusedtobuildprivateblockchainapplications.LaterwewilldelveintohowwecaninteractwithHyperledgerFabricblockchaintobuildprivatenetworksfromscratchcoveringalltherequiredprinciplessuchaschaincode,smartcontracts,cryptocurrenciesandmuchmoreontheHyperledgernetwork.Bytheendofthisbook,youwillbeabletobuildanddeployyourowndecentralizedapplicationsusingHyperledgeraddressingkeypainpointsencounteredinblockchainlifecycle.

ASP微信操作资料稀少，特上传此ASP获取微信用户信息的源代码供大家参考，已测试无错误。
1、必须是已谁的公众号2、要在公众号中将公众号设置-＞功能设置中的JS接口安全域名设置成要接收返回数据的网址3、将公众号信息填写到login.asp和callback.asp中的相关位置，里面有备注。
4、将压缩包中的3个文件和一个文件更上传至服务器根目录。
5、在微信中访问：你的域名/login.asp

[此书为滑模控制国外经典教材，《SlidingModeControl:Theoryandapplication》，作者CEdwards,SSpurgeon]Intheformationofanycontrolproblemtherewillbediscrepanciesbetweentheactualplantandthemathematicalmodelforcontrollerdesign.Slidingmodecontroltheoryseekstoproducecontrollerstooversomesuchmismatches.Thistextprovidesthereaderwithagroundinginslidingmodecontrolandisappropriateforthegraduatewithabasicknowledgeofclassicalcontroltheoryandsomeknowledgeofstate-spacemethods.Fromthisbasis,moreadvancedtheoreticalresultsaredeveloped.Twoindustrialcasestudies,whichpresenttheresultsofslidingmodecontrollerimplementations,areusedtoillustratethesuccessfulpracticalapplicationtheory.

Peoplelovepong.Theydo.Butwhy?Really.What'stolove?Thereisn'tmuchtothegame:apairofpaddlesmovetwobluntwhitelinesoneithersideofablackscreen,ablockyexcuseforaballbouncesbetweenthem,andifyoumisstheball,youropponentscoresapoint.Thefirstplayertoscorefifteenpointswins.Bigdeal.Yetdespiteitsalmostprimitivesimplicity,Pongcreatesmeaningfulplay.

在index.html的body中加入如下代码，jwplayer.js放在html文件夹下：插入[removed][removed][removed]jwplayer('my-video').setup({#其它的参数上网查询file:'jay.flv',#注意播放需要使用flashplayer，电脑版本chrome与fallback:'false',#edge都可不用flash，但firefox需要,安卓4.1上width:512,#已经不使用flash了，iOS也不用，故使用手机浏览器播放不height:383,#了。
screencolor:'#ff0'});[removed]

Ansiblehasalargecollectionofinbuiltmodulestomanagevariouscloudresources.Thebookbeginswiththeconceptsneededtosafeguardyourcredentialsandexplainhowyouinteractwithcloudproviderstomanageresources.Eachchapterbeginswithanintroductionandprerequisitestousetherightmodulestomanageagivencloudprovider.LearnaboutAmazonWebServices,GoogleCloud,MicrosoftAzure,andotherproviders.Eachchaptershowsyouhowtocreatebasiccomputingresources,whichyoucanthenusetodeployanapplication.Finally,youwillbeabletodeployasampleapplicationtodemonstratevarioususagepatternsandutilitiesofresources.

GettogripswithmodernsoftwaredemandsbylearningtheeffectiveusesofRust'spowerfulmemorysafety.KeyFeaturesLearnandimprovethesequentialperformancecharacteristicsofyoursoftwareUnderstandtheuseofoperatingsystemprocessesinahigh-scaleconcurrentsystemLearnofthevariouscoordinationmethodsavailableintheStandardlibraryBookDescriptionMostprogramminglanguagescanreallycomplicatethings,especiallywithregardtounsafememoryaccess.Theburdenonyou,theprogrammer,liesacrosstwodomains:understandingthemodernmachineandyourlanguage'spain-points.Thisbookwillteachyoutohowtomanageprogramperformanceonmodernmachinesandbuildfast,memory-safe,andconcurrentsoftwareinRust.ItstartswiththefundamentalsofRustanddiscussesmachinearchitectureconcepts.YouwillbetakenthroughwaystomeasureandimprovetheperformanceofRustcodesystematicallyandhowtowritecollectionswithconfidence.YouwilllearnabouttheSyncandSendtraitsappliedtothreads,andcoordinatethreadexecutionwithlocks,atomicprimitives,data-parallelism,andmore.ThebookwillshowyouhowtoefficientlyembedRustinC++codeandexplorethefunctionalitiesofvariouscratesformultithreadedapplications.Itexploresimplementationsindepth.Youwillknowhowamutexworksandbuildseveralyourself.Youwillmasterradicallydifferentapproachesthatexistintheecosystemforstructuringandmanaginghigh-scalesystems.Bytheendofthebook,youwillfeelcomfortablewithdesigningsafe,consistent,parallel,andhigh-performanceapplicationsinRust.WhatyouwilllearnProbeyourprogramsforperformanceandaccuracyissuesCreateyourownthreadingandmulti-processingenvironmentinRustUsecoarselocksfromRust’sStandardlibrarySolvecommonsynchronizationproblemsoravoidsynchronizationusingatomicprogrammingBuildlock-free/wait-freestructuresinRustandunderstandtheirimplementat

ProductDetailsPaperback:384pagesPublisher:Addison-WesleyProfessional;1edition(May19,2006)Language:EnglishISBN-10:0321349601ISBN-13:978-0321349606--------------------------------------------"IwasfortunateindeedtohaveworkedwithafantasticteamonthedesignandimplementationoftheconcurrencyfeaturesaddedtotheJavaplatforminJava5.0andJava6.Nowthissameteamprovidesthebestexplanationyetofthesenewfeatures,andofconcurrencyingeneral.Concurrencyisnolongerasubjectforadvancedusersonly.EveryJavadevelopershouldreadthisbook."--MartinBuchholzJDKConcurrencyCzar,SunMicrosystems"Forthepast30years,computerperformancehasbeendrivenbyMoore'sLaw;fromnowon,itwillbedrivenbyAmdahl'sLaw.Writingcodethateffectivelyexploitsmultipleprocessorscanbeverychallenging.JavaConcurrencyinPracticeprovidesyouwiththeconceptsandtechniquesneededtowritesafeandscalableJavaprogramsfortoday's--andtomorrow's--systems."--DoronRajwanResearchScientist,IntelCorp"Thisisthebookyouneedifyou'rewriting--ordesigning,ordebugging,ormaintaining,orcontemplating--multithreadedJavaprograms.Ifyou'veeverhadtosynchronizeamethodandyouweren'tsurewhy,youoweittoyourselfandyouruserstoreadthisbook,covertocover."--TedNewardAuthorofEffectiveEnterpriseJava"Brianaddressesthefundamentalissuesandcomplexitiesofconcurrencywithuncommonclarity.Thisbookisamust-readforanyonewhousesthreadsandcaresaboutperformance."--KirkPepperdineCTO,JavaPerformanceTuning.com"Thisbookcoversaverydeepandsubtletopicinaveryclearandconciseway,makingittheperfectJavaConcurrencyreferencemanual.Eachpageisfilledwiththeproblems(andsolutions!)thatprogrammersstrugglewitheveryday.EffectivelyexploitingconcurrencyisbecomingmoreandmoreimportantnowthatMoore'sLawisdeliveringmorecore

PyQt5TutorialDocumentationRelease1.0AndrewSteeleMarch01,20161Introduction32HelloWorld53Window74BoxLayout95GridLayout116Label137PushButton158RadioButton179CheckBox1910ToolTip2311WhatsThis2512LineEdit2713ButtonGroup2913.1Constructor................................................2913.2Methods.................................................2913.3Signals..................................................3013.4Example.................................................3014GroupBox3315SizeGrip3516Splitter3717Frame3918Slider4119ScrollBar4320ScrollArea45....................

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。