All things that are not code

All things that are not code

!code

Eyal Keren

BASIC - first bug

PERL - first time I couldn’t read my code

JAVA - first unit test

Vim

TDDCTO & Co-founder @ Rollout.io

@ekeren (github)

Once upon a time…While working @Intel

Once upon a time...

public class MyClass

public double calculateAnswer(String question)

//real code

return answer;


static Logger log = Logger.getLogger(MyClass.class.getName());

public double calculateAnswer(String question)log.debug("in calculateAnswer");//real code

return answer;

Once upon a time...



public double calculateAnswer(String question)log.debug("in calculateAnswer");//real code

log.debug("out calculateAnswer");

return answer;

Once upon a time...



public double calculateAnswer(String question)log.debug("in calculateAnswer question=" ,question);//real code

log.debug("out calculateAnswer answer=" ,answer);

return answer;

Once upon a time...



public double calculateAnswer(String question)//real code

return answer;

Once upon a time...

new system >> old system


Less mistakes Less performance cost

Less data to process Less code


Less mistakes Less performance cost

Less data to process Less untestable code

This talk

boolean function isCode()

return true; // TODO implement

if (!code)

// TODO implement

This talk

• Once upon a time..

• !code by examples

• Why Mobile?

• !code definition

• Q&A

Agenda

Rate UsWhen a user press the restart button on a high

score, let’s trigger rate us



Definition

R&D

PMResults

Implementation

QA

Release



Definition

R&D

PMResults

Implementation

QA

Release

• Methods are decorated on demand (before/after/inside)

• You can define actions for decoration

• Call these actions based on available data

• Decoration are safe and guarded

• Gradually rollout the decoration

• Zero performance hit

Imagine an Engine…

Rate Us Demo

!code

Not all code is created equal

Are these even necessary?

Rate Us

Testing CodeReview QA

Automated

YES - because we are humans

Are these even necessary?

Rate Us

Testing CodeReview QA

Automated

Not all code is created equal

The Power of !code

Profiling

Profiling

public void transactionA()

start_trace(“business_trans_A”);

doA();

doB();

doC();

doD();

end_trace(“business_trans_A”);

Profiling

public void takesALongTimeInProduction()

start_trace(“business_no_1”);

doA();

doB();

doC();

doD();

end_trace(“business_no_1”);

public void doA()

start_trace(“diag_AB”);

//real code

public void doB()

//real code

end_trace(“diag_AB”);

public void doC()

start_trace(“diag_C”);

//real code

end_trace(“diag_C”);

public void doD()

//real code

(Sounds familiar?)

Profiling

Get results intoNR dashboard

Set diag on1% of users

Figure outyour next step

Removediag traces

LogsUse cases

Automatic logging

• View controller life cycle

• Memory warnings

• System notifications

Upload your logs when something happens

• If the flow gets here with this value

• Until you get 5 logs of this issue

Rollout

Mixpanel Surveys

Apptimize

Intercom

HelpShift

LeanPlum

Rollout

iRateMixpanel analytics

Mixpanel A/B

Launchdarkly

Parse config

ConfigoLinkedIn

Facebook

ZenDesk

Insert.io

Elasticode

Google Tag Manager

Segment

Mixpanel Surveys

Apptimize

Intercom

HelpShift

LeanPlum

Rollout


Mixpanel A/B

Launchdarkly

Parse config

ConfigoLinkedIn

Facebook

ZenDesk

Insert.io

Elasticode

Google Tag Manager

Segment

Github/Jira for !Code

Why Mobile ?

Why Mobile first ?

Why Mobile first ?

/ NSString *fragmentShaderString = [NSString stringWithContentsOfFile:fragShaderPathnameencoding:NSUTF8StringEncoding error:nil];; if ((self = [self initWithVertexShaderString:vertexShaderStringfragmentShaderString:fragmentShaderString])) return self;; // END:init // START:compile -(BOOL)compileShader:(GLuint *)shader type:(GLenum)type string:(NSString *)shaderString // CFAbsoluteTime startTime = CFAbsoluteTimeGetCurrent();; GLint status;; const GLchar *source;; source = (GLchar *)[shaderString UTF8String];; if (!source) NSLog(@"Failed to load vertex shader");; return NO;; *shader = glCreateShader(type);; glShaderSource(*shader, 1, &source, NULL);; glCompileShader(*shader);; glGetShaderiv(*shader, GL_COMPILE_STATUS, &status);; if (status != GL_TRUE) GLint logLength;; glGetShaderiv(*shader, GL_INFO_LOG_LENGTH, &logLength);; if (logLength > 0)

GLchar *log = (GLchar *)malloc(logLength);; glGetShaderInfoLog(*shader, logLength, &logLength, log);; NSLog(@"Shader compile log:\n%s", log);; free(log);; // CFAbsoluteTime linkTime = (CFAbsoluteTimeGetCurrent() - startTime);; //

NSLog(@"Compiled in %f ms", linkTime * 1000.0);; return status == GL_TRUE;; // END:compile #pragma mark - // START:addattribute - (void)addAttribute:(NSString *)attributeName if (![attributes containsObject:attributeName]) [attributes addObject:attributeName];; glBindAttribLocation(program, (GLuint)[attributes indexOfObject:attributeName], [attributeName UTF8String]);; // END:addattribute // START:indexmethods - (GLuint)attributeIndex:(NSString *)attributeName return (GLuint)[attributes indexOfObject:attributeName];; - (GLuint)uniformIndex:(NSString *)uniformName return glGetUniformLocation(program, [uniformName UTF8String]);; // END:indexmethods #pragma mark - // START:link - (BOOL)link // CFAbsoluteTime startTime = CFAbsoluteTimeGetCurrent();; GLint status;; glLinkProgram(program);; glGetProgramiv(program, GL_LINK_STATUS, &status);; if (status == GL_FALSE) return NO;; if (vertShader) glDeleteShader(vertShader);; vertShader = 0;; if (fragShader) glDeleteShader(fragShader);; fragShader = 0;; self.initialized = YES;; // CFAbsoluteTime linkTime = (CFAbsoluteTimeGetCurrent() - startTime);; //

!code

!code Smells if C do A

• C:

• Remotely configured

• opinionated

• A:

• Volatile

• Not testable

• Doesn’t change the application behavior

Look for !CodeMixpanelSurveys

Apptimize

Intercom

HelpShift

LeanPlum

Rollout


Mixpanel A/B

Launchdarkly

Parse config

ConfigoLinkedIn

Facebook

ZenDesk

Insert.io

Elasticode

Q&A

Technology

All things that are not code