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Improving your C# Skills
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Improving your C# Skills

ThisLearningPathshowsyouhowtocreatehighperformingapplicationsandsolveprogrammingchallengesusingawiderangeofC#features.You’llbeginbylearninghowtoidentifythebottlenecksinwritingprograms,highlightcommonperformancepitfalls,andapplystrategiestodetectandresolvetheseissuesearly.You'llalsostudytheimportanceofmicro-servicesarchitectureforbuildingfastapplicationsandimplementingresiliencyandsecurityin.NETCore.Then,you'llstudytheimportanceofdefiningandtestingboundaries,abstractingawaythird-partycode,andworkingwithdifferenttypesoftestdouble,suchasspies,mocks,andfakes.Inadditiontodescribingprogrammingtrade-offs,thisLearningPathwillalsohelpyoubuildausefultoolkitoftechniques,includingvaluecaching,statisticalanalysis,andgeometricalgorithms.ThisLearningPathincludescontentfromthefollowingPacktproducts:C#7and.NETCore2.0HighPerformancebyOvaisMehboobAhmedKhan.PracticalTest-DrivenDevelopmentusingC#7byJohnCallaway,ClaytonHunt.TheModernC#ChallengebyRodStephens.

Ovais Mehboob Ahmed Khan John Callaway Clayton Hunt Rod Stephens ·數學 ·12萬字

Hands-On IoT Solutions with Blockchain
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Hands-On IoT Solutions with Blockchain

Blockchainhasbeenthehottopicoflatethankstocryptocurrencies.Tomakemattersmoreinteresting,thefinancialmarketislookingforwaystoreduceoperationalcostsandgeneratenewbusinessmodels,andthisiswhereblockchainsolutionscomeintothepicture.Inadditiontothis,withInternetofThings(IoT)trendingandArduino,RaspberryPi,andotherdevicesfloodingthemarket,youcannowcreatecheapdevicesevenathome.Hands-OnIoTSolutionswithBlockchainstartswithanoverviewofIoTconceptsinthecurrentbusinessscenario.ItthenhelpsyoudevelopyourowndeviceontheIBMWatsonIoTplatformandcreateyourfirstIoTsolutionusingWatsonandIntelEdison.OnceyouarefamiliarwithIoT,youwilllearnaboutBlockchaintechnologyanditsusecases.YouwillalsoworkwiththeHyperledgerframeworkanddevelopyourownBlockchainnetwork.Asyouprogressthroughthechapters,you'llworkwithproblemstatementsandlearnhowtodesignyoursolutionarchitecturesothatyoucancreateyourownintegratedBlockchainandIoTsolution.Thenextsetofchapterswillexplainhowtoimplementend-to-endBlockchainsolutionswithIoTusingtheIBMCloudplatform.Bytheendofthisbook,youwillhavemasteredtheconvergenceofIoTandBlockchaintechnologyandexploitedthebestpracticesanddriverstodevelopabulletproofintegratedsolution.

Maximiliano Santos Enio Moura ·數學 ·3.3萬字

Data Visualization：a successful design process
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Data Visualization：a successful design process

Acomprehensiveyetquickguidetothebestapproachestodesigningdatavisualizations,withrealexamplesandillustrativediagrams.Whateverthedesiredoutcomeensuresuccessbyfollowingthisexpertdesignprocess.Thisbookisforanyonewhohasresponsibilityfor,orisinterestedintryingtofindinnovativeandeffectivewaystovisuallyanalyzeandcommunicatedata.Thereisnoskill,noknowledgeandnorole-basedpre-requisitesorexpectationsofanyonereadingthisbook.

Andy Kirk ·數學 ·5.1萬字

Ethereum Smart Contract Development
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Ethereum Smart Contract Development

IfyouwanttoknowtheinsandoutsoftheEthereumnetworkandbuildyourowndecentralizedapplications,thenthisbookiswhatyouneed!ThisbookisforanyonewhoisinterestedinblockchainandwantstobecomeanEthereumdeveloper.It’sidealforexistingEthereumdeveloperswhowanttodevelopEthereumusingsmartcontracts.Basicknowledgeofcryptographyisexpectedbutisnotmandatory.

Mayukh Mukhopadhyay ·數學 ·5.3萬字

Hands-On Blockchain with Hyperledger
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Hands-On Blockchain with Hyperledger

BBlockchainandHyperledgertechnologiesarehottopicstoday.HyperledgerFabricandHyperledgerComposerareopensourceprojectsthathelporganizationscreateprivate,permissionedblockchainnetworks.Thesefindapplicationinfinance,banking,supplychain,andIoTamongseveralothersectors.ThisbookwillbeaneasyreferencetoexploreandbuildblockchainnetworksusingHyperledgertechnologies.Thebookstartsbyoutliningtheevolutionofblockchain,includinganoverviewofrelevantblockchaintechnologies.YouwilllearnhowtoconfigureHyperledgerFabricandbecomefamiliarwithitsarchitecturalcomponents.Usingthesecomponents,youwilllearntobuildprivateblockchainnetworks,alongwiththeapplicationsthatconnecttothem.Startingfromprinciplesfirst,you’lllearntodesignandlaunchanetwork,implementsmartcontractsinchaincodeandmuchmore.Bytheendofthisbook,youwillbeabletobuildanddeployyourowndecentralizedapplications,handlingthekeypainpointsencounteredintheblockchainlifecycle.

Salman Baset Luc Desrosiers Nitin Gaur Petr Novotny Anthony O’Dowd Venkatraman Ramakrishna ·數學 ·10.8萬字

Hyperledger Cookbook
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Hyperledger Cookbook

Hyperledgerisanopen-sourceprojectandcreatesprivateblockchainapplicationsforarangeofdomains.Thisbookwillbeyourdeskreferenceasyouexplorecommonandnot-so-commonchallengesfacedwhilebuildingblockchainnetworksusingHyperledgerservices.We'llworkthroughallHyperledgerplatformmodulestounderstandtheirservicesandfeaturesandbuildend-to-endblockchainapplicationsusingvariousframeworksandtoolssupportedbyHyperledger.Thisbook'sindependent,recipe-basedapproach(packedwithreal-worldexamples)willfamiliarizeyouwiththeblockchaindevelopmentcycle.Frommodelingabusinessnetworktointegratingwithvarioustools,youwillcoveritall.We'llcovercommonandnot-so-commonchallengesfacedintheblockchainlifecycle.Later,we'lldelveintohowwecaninteractwiththeHyperledgerFabricblockchain,coveringalltheprinciplesyouneedtomaster,suchaschaincode,smartcontracts,andmuchmore.We'llalsoaddressthescalabilityandsecurityissuescurrentlyfacedinblockchaindevelopment.Bytheendofthisbook,youwillbeabletoimplementeachrecipetoplan,design,andcreateafull-fledged,private,decentralizedapplicationtomeetorganizationalneeds.

Xun (Brian) Wu Chuanfeng Zhang Andrew Zhang ·數學 ·4.9萬字

Blockchain for Enterprise
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Blockchain for Enterprise

Theincreasinggrowthinblockchainuseisenormous,anditischangingthewaybusinessisdone.Manyleadingorganizationsarealreadyexploringthepotentialofblockchain.Withthisbook,youwilllearntobuildend-to-endenterprise-leveldecentralizedapplicationsandscalethemacrossyourorganizationtomeetyourcompany'sneeds.ThisbookwillhelpyouunderstandwhatDAppsareandhowtheblockchainecosystemworks,viareal-worldexamples.Thisextensiveend-to-endbookcoverseveryblockchainaspectforbusinessandfordevelopers.Youwillmasterprocessflowsandincorporatethemintoyourownenterprise.YouwilllearnhowtouseJ.P.Morgan’sQuorumtobuildblockchain-basedapplications.Youwillalsolearnhowtowriteapplicationsthatcanhelpcommunicateenterpriseblockchainsolutions.Youwilllearnhowtowritesmartcontractsthatrunwithoutcensorshipandthird-partyinterference.Onceyou'vegraspedwhatablockchainisandhavelearnedaboutQuorum,youwilljumpintobuildingreal-worldpracticalblockchainapplicationsforsectorssuchaspaymentandmoneytransfer,healthcare,cloudcomputing,supplychainmanagement,andmuchmore.

Narayan Prusty ·數學 ·4.9萬字

Hands-On Cryptography with Python
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Hands-On Cryptography with Python

Hands-OnCryptographywithPythonisforsecurityprofessionalswhowanttolearntoencryptandevaluatedata,andcomparedifferentencryptionmethods.

Samuel Bowne ·數學 ·1.6萬字

Hands-On Blockchain for Python Developers
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Hands-On Blockchain for Python Developers

Blockchainisseenasthemaintechnologicalsolutionthatworksasapublicledgerforallcryptocurrencytransactions.Thisbookservesasapracticalguidetodevelopingafull-fledgeddecentralizedapplicationwithPythontointeractwiththevariousbuildingblocksofblockchainapplications.Hands-OnBlockchainforPythonDevelopersstartsbydemonstratinghowblockchaintechnologyandcryptocurrencyhashingworks.Youwillunderstandthefundamentalsandbenefitsofsmartcontractssuchascensorshipresistanceandtransactionaccuracy.Asyousteadilyprogress,you'llgoontobuildsmartcontractsusingVyper,whichhasasimilarsyntaxtoPython.Thisexperiencewillfurtherhelpyouunraveltheotherbenefitsofsmartcontracts,includingreliablestorageandbackup,andefficiency.You'llalsouseweb3.pytointeractwithsmartcontractsandleveragethepowerofboththeweb3.pyandPopulusframeworktobuilddecentralizedapplicationsthatoffersecurityandseamlessintegrationwithcryptocurrencies.Asyouexplorelaterchapters,you'lllearnhowtocreateyourowntokenontopofEthereumandbuildacryptocurrencywalletgraphicaluserinterface(GUI)thatcanhandleEthereumandEthereumRequestforComments(ERC-20)tokensusingthePySide2library.Thiswillenableuserstoseamlesslystore,send,andreceivedigitalmoney.Towardtheend,you'llimplementInterPlanetaryFileSystem(IPFS)technologyinyourdecentralizedapplicationtoprovideapeer-to-peerfilesystemthatcanstoreandexposemedia.Bytheendofthisbook,you'llbewell-versedinblockchainprogrammingandbeabletobuildend-to-enddecentralizedapplicationsonarangeofdomainsusingPython.

Arjuna Sky Kok ·數學 ·8.8萬字

Security Tokens and Stablecoins Quick Start Guide
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Security Tokens and Stablecoins Quick Start Guide

Thefailureofinitialcoinofferings(ICOs)isnoaccident,asmostICOsdonotlinktoarealassetandarenotregulated.RealizingtheshortcomingsofICOs,theblockchaincommunityandpotentialinvestorsembracedsecuritytokenofferings(STOs)andstablecoinsenthusiastically.Inthisbook,westartwithanoverviewoftheblockchaintechnologyalongwithitsbasicconcepts.WeintroducetheconceptbehindSTO,andcoverthebasicrequirementsforlaunchingaSTOandtherelevantregulationsgoverningitsissuance.WediscussU.S.securitieslawsdevelopmentinlaunchingsecuritydigitaltokensusingblockchaintechnologyandshowsomerealusecases.WealsoexploretheprocessofSTOlaunchesandlegalconsiderations.WeintroducepopularsecuritytokensinthecurrentblockchainspaceandtalkabouthowtodevelopasecuritytokenDApp,includingsmartcontractdevelopmentforERC1404tokens.Later,you'lllearntobuildfrontendsidefunctionalitiestointeractwithsmartcontracts.Finally,wediscussstablecointechnicaldesignfunctionalitiesforissuingandoperatingSTOtokensbyinteractingwithEthereumsmartcontracts.Bytheendofthisbook,youwillhavelearnedmoreaboutSTOsandgainedadetailedknowledgeofbuildingrelevantapplications—allwiththehelpofpracticalexamples.

Weimin Sun Xun (Brian) Wu Angela Kwok ·數學 ·5.6萬字

Blockchain Developer's Guide
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Blockchain Developer's Guide

Blockchainapplicationsprovideasingle-sharedledgertoeliminatetrustissuesinvolvingmultiplestakeholders.ItisthemaintechnicalinnovationofBitcoin,whereitservesasthepublicledgerforBitcointransactions.BlockchainDeveloper'sGuidetakesyouthroughtheelectrifyingworldofblockchaintechnology.Itbeginswiththebasicdesignofablockchainandelaboratesconcepts,suchasInitialCoinOfferings(ICOs),tokens,smartcontracts,andotherrelatedterminologies.YouwillthenexplorethecomponentsofEthereum,suchasEthertokens,transactions,andsmartcontractsthatyouneedtobuildsimpleDApps.BlockchainDeveloper'sGuidealsoexplainswhyyoumustspecificallyuseSolidityforEthereum-basedprojectsandletsyouexploredifferentblockchainswitheasy-to-followexamples.Youwilllearnawiderangeofconcepts-beginningwithcryptographyincryptocurrenciesandincludingethersecurity,mining,andsmartcontracts.YouwilllearnhowtousewebsocketsandvariousAPIservicesforEthereum.BytheendofthisLearningPath,youwillbeabletobuildefficientdecentralizedapplications.ThisLearningPathincludescontentfromthefollowingPacktproducts:BlockchainQuickReferencebyBrennHill,SamanyuChopra,PaulValencourt.BuildingBlockchainProjectsbyNarayanPrusty.

Brenn Hill Samanyu Chopra Paul Valencourt Narayan Prusty ·數學 ·12.5萬字

Foundations of Blockchain
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Foundations of Blockchain

Blockchaintechnologyisacombinationofthreepopularconcepts:cryptography,peer-to-peernetworking,andgametheory.Thisbookisforanyonewhowantstodiveintoblockchainfromfirstprinciplesandlearnhowdecentralizedapplicationsandcryptocurrenciesreallywork.Thisbookbeginswithanoverviewofblockchaintechnology,includingkeydefinitions,itspurposesandcharacteristics,soyoucanassessthefullpotentialofblockchain.Allessentialaspectsofcryptographyarethenpresented,asthebackboneofblockchain.Forreaderswhowanttostudytheunderlyingalgorithmsofblockchain,you’llseePythonimplementationsthroughout.You’llthenlearnhowblockchainarchitecturecancreatedecentralizedapplications.You’llseehowblockchainachievesdecentralizationthroughpeer-to-peernetworking,andhowasimpleblockchaincanbebuiltinaP2Pnetwork.You’lllearnhowtheseelementscanimplementacryptocurrencysuchasBitcoin,andthewiderapplicationsofblockchainworkthroughsmartcontracts.Blockchainoptimizationtechniques,andblockchainsecuritystrategiesarethenpresented.Tocompletethisfoundation,weconsiderblockchainapplicationsinthefinancialandnon-financialsectors,andalsoanalyzethefutureofblockchain.Astudyofblockchainusecasesincludessupplychains,paymentsystems,crowdfunding,andDAOs,whichroundsoutyourfoundationinblockchaintechnology.

Koshik Raj ·數學 ·9.2萬字

Blockchain for Business 2019
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Blockchain for Business 2019

BlockchainforBusiness2019isacomprehensiveguidethatenablesyoutobringinvariousblockchainfunctionalitiestoextendyourexistingbusinessmodelsandmakecorrectfully-informeddecisions.Youwilllearnhowdecentralizedapplicationsaretransformingnumerousbusinesssectorsthatareexpectedtoplayahugeroleinthefuture.Youwillseehowlargecorporationsarealreadyimplementingblockchaintechnologynow.Youwillthenlearnaboutthevariousblockchainservices,suchasBitcoin,Ethereum,Hyperledger,andotherstounderstandtheirusecasesinavarietyofbusinessdomains.Youwilldevelopasolidfundamentalunderstandingofblockchainarchitecture.Movingahead,youwillgettogripswiththeinnerworkingsofblockchain,withdetailedexplanationsofmining,decentralizedconsensus,cryptography,smartcontracts,andmanyotherimportantconcepts.Youwilldelveintoarealisticviewofthecurrentstateofblockchaintechnology,alongwithitsissues,limitations,andpotentialsolutionsthatcantakeittothenextlevel.Bytheendofthisbook,youwillallbewellversedinthelatestinnovationsanddevelopmentsintheemergingblockchainspace.

Peter Lipovyanov ·數學 ·6萬字

美妙的數學（插圖珍藏版）
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美妙的數學（插圖珍藏版）

本書以數學實例揭示數學潛在的規律，同時探索用美學原理指導數學創造和發現的途徑。內容包括：數，科學的語言；形，數的伴侶；數與形，相得益彰；曲線，大自然的寫真；抽象，數學的靈魂；無窮，艱難的旅程。

吳振奎 ·數學 ·14字

奇妙的數學：激發大腦潛能的經典名題（升級版）
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奇妙的數學：激發大腦潛能的經典名題（升級版）

在人類的歷史長河中，數學家們總結發現過許多奇妙的數學問題，它們如夜空中的繁星，閃爍著熠熠星輝，體現了客觀世界的規律之美、人類的智慧之美以及自然界的和諧之美。直到今天，這些經典的數學問題仍然受到大家的喜愛。閱讀并思考這些問題，是啟迪數學思維、培養興趣愛好、拓寬知識視野的好方法。本書精選了32個專題，每個專題都以故事的形式分享了數學問題背后的歷史故事及人物軼事，設置了同類的例題進行詳細講解，還精選了8道習題供讀者練習提升?？靵砗凸沤裰型獾臄祵W家、物理學家等歷史上的超強大腦們，做一次穿越時空的親密接觸吧！本書適合作為小學中高年級學生和初中生的數學課外讀物，也可供數學愛好者閱讀。

江安海編 ·數學 ·9.4萬字

錢敏數學文選
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錢敏數學文選

本書收錄了《馬爾可夫半群的不變測度與遍歷性》《非自治系統的不變圈（解流形）分支》《MinimalCoupledDiffusionProcess》《GeneralizedWeylTransformation》等文章。

北京大學數學科學學院編 ·數學 ·0字

簡明實用速算法：高位分段累加算術（第2版）
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簡明實用速算法：高位分段累加算術（第2版）

本書以高位分段累加計算的方法，全面系統地介紹了實數加、減、乘、除、乘方、開方運算在普遍情況下的簡化計算法則，實現了數的運算在通常情況下即能順利通過心算速算來完成的目的。全書共分九章：第一章至第八章介紹了高位分段累加算術的思想方法，及其在實數加、減、乘、除、乘方、開方運算中的一般心算速算應用；第九章介紹了特殊條件下的心算速算方法，并運用高位分段累加算術解讀了古印度吠陀數學乘法五式和除數是九的除法速算方法。第二版增加了直寫答案式簡化計算方法，更有利于大眾應用。介紹方式由淺入深、通俗易懂。并詳細講解了方法的論證過程，有益于讀者理解和掌握應用，利于普及。掌握了本算法不僅能迅速提高學生的心算能力和計算速度，更有利于提高學生的邏輯思維能力、激發學生的學習興趣。本方法若能廣泛應用于中小學教學中，即能明顯提高學生的解題速度和學習效果；若能廣泛應用于財會、商業、科研活動中，更能提高人們的工作效率和社會效益。本書可作為中小學校、財會、商貿及師范院校的教輔參考用書，也適用于青少年及從事財會、商業、科研等活動的成人自學。為了方便我國小學各年級讀者學習，在2018年美國版《高位分段累加算術》（HIGHORDERPIECEWISEARITHMETICS）的基礎上增設了減法運算中的退位速算法和“附錄三：速算基礎習題（小學一至六年級分階段基礎練習題）”供小學讀者速算訓練用。

端木寧 ·數學 ·1.6萬字

QQ閱讀手機版

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