@DV Gen: Why I'm Using Wave Function Collapse for Procedural Terrain | Unity Devlog

Nidhal Abidi: How to Make an Operating System from Scratch

Nidhal Abidi

Linus Torvalds: The Mind Behind Linux

• Myopic

Bjarne Stroustrup: Why the Programming Language C Is Obsolete

Bjarne Stroustrup

Larry Wall: 5 Programming Languages Everyone Should Know

Larry Wall

PHP: Snippet: １行内の任意の標識文字に対する値の取得

// Label: の後に書いてある文字列を取得する
if (mb_strpos($line, “Label:”) !== false)
{
   $str = mb_substr($line, mb_strpos($line, “Label:”) + strlen(“Label:“));
}

PHP: Snippet: XML Parsing Example

// XMLを取得
$myXMLData = file_get_contents($xmlURL . $xmlURLParameter);

// XMLをパース
$xml = simplexml_load_string($myXMLData) or die (“Error: Cannot create object”);

// タイトルを取得
$title = $xml->entry->title;

// 概要を取得
$summary = $xml->entry->summary;

// 概要を行で分解
$lines = explode(PHP_EOL, $summary);

LLVM 2.0

• AST
• Abstract syntax tree
• Better warning control
• C language family frontend for LLVM
• C/ObjC parser
• Chris Lattner
• Clang
• Code generator
• Codegen
• Compiler
• Development builds
• Distcc
• Enum definitions
• Expressive diagnostics
• FORTRAN & Ada
• File scoped variables
• Function declarations
• GCC 4.0
• GCC 4.1 front-end features
• GCC front-end is difficult to work with
• GCC is slow and memory hungry
• GIMPLE
• Good diagnostics
• Header analysis
• Header preprocessing
• IDE
• IR
• Indexing
• LLVC C Family Frontend
• LLVM
• LLVM IR
• Library based architecture
• Link Time Optimization
• Macros
• OpenMP
• Optimizer 
• PIC support
• Parse
• Precompiled Headers (PCH)
• Precompiled headers
• Preprocess
• Refactoring
• Release builds
• Rename variable
• Semantic analysis
• Source analysis
• Source-Level Analysis tools
• Structure definitions
• System headers are huge
• Token
• Tree building
• Typedefs
• Unified parser for C-based languages

Program output: Physical constant

***Table of universal constants***

Speed of light: 299792458

Newtonian constant of gravitation: 6.67384e-11

Planck constant: 6.62606957e-34

Reduced planck constant: 1.054571725e-34

***Table of electromagnetic constants***

Magnetic constant: 1.256637061e-06

Electric constant: 8.854187818e-12

Characteristic impedance of vacuum: 376.730313462

Coulomb's constant: 8.987551787e+09

Elementary charge: 1.602176565e-19

Bohr magneton: 9.27400967e-24

Conductance quantum: 7.7480917407e-05

Inverse conductance quantum: 12906.4037116

Josephson constant: 4.83597870e+14

Magnetic flux quantum: 2.067833757e-15

Nuclear magneton: 5.05078353e-27

von Klitzing constant: 25812.8074232

***Table of atomic and nuclear constants***

Bohr radius: 5.2917721011e-11

Classical electron radius: 2.8179403268e-15

Electron mass: 9.10938291e-31

Fermi coupling constant: 1.166364e-05

Fine-structure constant: 7.2973525755e-03

Hartree energy: 4.35974435e-18

Proton mass: 1.672621777e-27

Quantum of circulation: 3.6369475493e-04

Rydberg constant: 10973731.593929

Thomson cross section: 6.652458735e-29

Weak mixing angle: 0.2223

Efimov factor: 22.7

***Table of physico-chemical constants***

Atomic mass constant: 1.660538921e-27

Avogadro's number: 6.02214129e+23

Boltzmann constant: 1.3806488e-23

Faraday constant: 96485.3365

First radiation constant: 3.74177152e-16

First radiation constant for spectral radiance: 1.191042869e-16

Loschmidt constant: 2.6867806e+25

Gas constant: 8.3144621

Molar planck constant: 3.9903127148e-10

Molar volume of an ideal gas at temperature at 273.15 K and pressure 100 kPa: 2.2710953e-02

Molar volume of an ideal gas at temperature at 273.15 K and pressure 101.325kPa: 2.2413968e-02

Sackur tetrode constant at temperature 1 K and pressure 100 KPa: -1.1517078

Sackur tetrode constant at temperature 1 K and pressure 101.325 KPa: -1.1648708

Second radiation constant: 1.4387770e-02

Stefan boltzmann constant: 5.670372e-08

Wien displacement law constant: 2.8977721e-03

***Table of adopted values***

Molar mass constant: 1e-03

Molar mass of carbon 12: 1.2e-02

Standard acceleration of gravity: 9.80665

Standard atmosphere: 101325

***Natural units***

Planck length: 1.616199e-35

Planck mass: 2.17651e-08

Planck time: 5.39106e-44

Planck charge: 1.875545956e-18

Planck temperature: 1.416833e+32