best coding practices

Best coding practices

Programmingworkshop

NO best language out thereBestProgrammingLanguageFor.me

NO best language out thereBestProgrammingLanguageFor.me

Where to write

TextEditor

Where to write

TextEditorIDE

Java / Android -- Intellij IDEAPython -- PyCharmC / C++ -- ClionObj. C / Swift -- App CodeC# -- ReSharper / RiderPhp -- PhpStormRuby -- RubyMineJavascript -- WebStormDBA -- DataGrip

JetBrains studentprogramjetbrains.com/student

How to manage :: VCS

How to manage :: VCS

Themostimportantrule

Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live.

Remember the second law of thermodynamics? It implies that disorder in a system will always increase unless you spend energy and work to

keep it from increasing.

It is hard to write clean code

Reinventing the wheel

Software design patternsDesign patterns can speed up the development process by providing tested, proven development paradigms.

Effective software design requires considering issues that may not become visible until later in the implementation.

Reusing design patterns helps to prevent subtle issues that can cause major problems and improves code readability for coders and architects familiar with the patterns.

Creational

Creationaldesignpatternsaredesignpatternsthatdealwithobjectcreationmechanisms,tryingtocreateobjectsinamannersuitabletothesituation.Thebasicformofobjectcreationcouldresultindesignproblemsoraddedcomplexitytothedesign.Creationaldesignpatternssolvethisproblembysomehowcontrollingthisobjectcreation.

Software design patterns

Software design patterns

CreationalStructural

StructuralDesignPatternsareDesignPatternsthateasethedesignbyidentifyingasimplewaytorealizerelationshipsbetweenentities.

Software design patterns

CreationalStructuralBehavioral

Behavioraldesignpatternsaredesignpatternsthatidentifycommoncommunicationpatternsbetweenobjectsandrealizethesepatterns.Bydoingso,thesepatternsincreaseflexibilityincarryingoutthiscommunication.

Variableandmethodnaming

1. Useintention-revealingname

Variableandmethodnaming

1. Useintention-revealingname2. Usepronounceablename

Variableandmethodnaming

1. Useintention-revealingname2. Usepronounceablename3. Don'tbecute

Variableandmethodnaming

1. Useintention-revealingname2. Usepronounceablename3. Don'tbecute4. Useonewordperconcept

Variableandmethodnaming

1. Useintention-revealingname2. Usepronounceablename3. Don'tbecute4. Useonewordperconcept5. Useverbsforfunctionnamesandnounsforclassesandattributes

Variableandmethodnaming

1. Useintention-revealingname2. Usepronounceablename3. Don'tbecute4. Useonewordperconcept5. Useverbsforfunctionnamesandnounsforclassesandattributes

Functions

1. Thesmaller,thebetter(butdon’tbecrazy)

Functions

1. Thesmaller,thebetter2. Thefunctionshalldoonlyonething

Functions

1. Thesmaller,thebetter2. Thefunctionshalldoonlyonething3. Lessargumentsarebetter

Functions

1. Thesmaller,thebetter2. Thefunctionshalldoonlyonething3. Lessargumentsarebetter4. Nosideeffects

Functions

1. Thesmaller,thebetter2. Thefunctionshalldoonlyonething3. Lessargumentsarebetter4. Nosideeffects5. Avoidoutputarguments

Functions

1. Thesmaller,thebetter2. Thefunctionshalldoonlyonething3. Lessargumentsarebetter4. Nosideeffects5. Avoidoutputarguments6. Don’trepeatyourself

Commets

Commets

1. Don’tcommentbadcode,rewriteit

Commets

1. Don’tcommentbadcode,rewriteit2. Ifcodeisreadableyoudon’tneedcomments

Commets

1. Don’tcommentbadcode,rewriteit2. Ifcodeisreadableyoudon’tneedcomments3. Explainyourintentionincomments

Commets

1. Don’tcommentbadcode,rewriteit2. Ifcodeisreadableyoudon’tneedcomments3. Explainyourintentionincomments4. Warnofconsequencesincomments

Commets

1. Don’tcommentbadcode,rewriteit2. Ifcodeisreadableyoudon’tneedcomments3. Explainyourintentionincomments4. Warnofconsequencesincomments5. Emphasizeimportantpointsincomments

Commets

1. Don’tcommentbadcode,rewriteit2. Ifcodeisreadableyoudon’tneedcomments3. Explainyourintentionincomments4. Warnofconsequencesincomments5. Emphasizeimportantpointsincomments6. Noisecommentsarebad

DEMOTIME!github.com/aganezov/python-samples

NextmeetingofJetBrains GWUMarch24th,2016

LehmanAuditorium(B1270)5:00– 7:00pm

“MasteringPython”

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aganezov@gwu.edu