Fallacies of Doom - Devoxx BE 17

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx Fallacies of Doom Lessons learned from
porting Doom 3 to Java

@blackbeard0x14e #Devoxx Boring intro: history • id Software: Unusual company
creating ‘innovative’ games(Keen, Wolf3D, Doom, Quake) • Self taught era, efficient coding style(s) • Nerd rage anecdote • Djoom3? • Why the boring awesome intro?

@blackbeard0x14e #Devoxx

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx wishlist

@blackbeard0x14e #Devoxx Immutability; const vs final [1] ftp://ftp.idsoftware.com/idstuff/doom3/source/CodeStyleConventions.doc

@blackbeard0x14e #Devoxx Immutability; const vs final • final for variables
sucks • final for functions sucks less • final for classes rocks

@blackbeard0x14e #Devoxx Unsigned primitives Runtime or compile-time error??

@blackbeard0x14e #Devoxx Unsigned primitives Microbenchmark alert:

@blackbeard0x14e #Devoxx Operator overloading c.J1.oMultiply(c.body1.acceleration).oPlus(c.J2.oMultiply(c.body2.acceleration)).oPlus( (c.c1.oPlus(c.c2)).oMultiply(invStep)); c.J1.__(c.body1.acceleration).__(c.J2.__(c.body2.acceleration)).__((c.c1.__(c.c2)).__(i nvStep));//thanks sjmaple c->J1
* c->body1->acceleration + c->J2 * c->body2->acceleration + invStep * (c->c1 + c->c2); [2] https://www.cs.virginia.edu/~evans/cs655/readings/steele.pdf

@blackbeard0x14e #Devoxx Operator overloading idMat3 a, b, c, z; z
= a + b * c; z = a.oPlus(b).oMultiply(c); z = b.oMultiply(c).oPlus(a);//technically correct z = a.oPlus(b.oMultiply(c));//compiler correct

@blackbeard0x14e #Devoxx sizeof( )

@blackbeard0x14e #Devoxx Destructor • Deconstructors • Finalize(deprecated?) • Autocloseable

@blackbeard0x14e #Devoxx Enum

@blackbeard0x14e #Devoxx Grandfather inheritance • Super.super.function • Why are equals/hashcode
inherited?

@blackbeard0x14e #Devoxx Pointers

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx (thank God we don’t have this…)-list

@blackbeard0x14e #Devoxx Death by Macros [3] https://blogs.msdn.microsoft.com/oldnewthing/20050106-00/?p=36783 [4] https://youtu.be/4cCeUfzH-No?t=23m

@blackbeard0x14e #Devoxx Hungarian Camels

@blackbeard0x14e #Devoxx Hungarian Camels [5]https://www.joelonsoftware.com/2005/05/11/making-wrong-code-look-wrong/ [6] https://steve-yegge.blogspot.nl/2006/03/execution-in-kingdom-of-nouns.html

@blackbeard0x14e #Devoxx Hungarian Camels

@blackbeard0x14e #Devoxx Unholy union

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx nice to have -list

@blackbeard0x14e #Devoxx Default arguments

@blackbeard0x14e #Devoxx Inlining

@blackbeard0x14e #Devoxx string::insert, string::swap

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx weird(wish)-list

@blackbeard0x14e #Devoxx The memory watcher

@blackbeard0x14e #Devoxx Pop goes the callstack

@blackbeard0x14e #Devoxx 5.1.2. Widening Primitive Conversion

@blackbeard0x14e #Devoxx Floating point operator precedence

@blackbeard0x14e #Devoxx Conditional breakpoints •Sloooow(interpretive) Microbenchmark alert:

@blackbeard0x14e #Devoxx A backwards compatible story?

@blackbeard0x14e #Devoxx A backwards compatible story? •Why is backwards compatibility
the default mode of operation? •Why not make it optional with compile/runtime warnings/errors?

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx Questions?

@blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx https://github.com/blackbeard334/djoom3 @blackbeard0x14e

Fallacies of Doom - Devoxx BE 17

Fallacies of Doom - Devoxx BE 17

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