ISSOtm

This document is now at https://gbdev.io/guides/tools.html, please go there instead. It's kept here to avoid breaking links and to preserve history.

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evadot

#!/bin/sh

if [ $# -ne 2 ]; then
    echo "Usage: make_dtb.sh arch dtsfile"
    exit 1
fi

case $1 in
    arm)
        dtsfile=$2

ErikAugust

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef _MSC_VER
#include <intrin.h> /* for rdtscp and clflush */
#pragma optimize("gt",on)
#else
#include <x86intrin.h> /* for rdtscp and clflush */
#endif

djspiewak

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea

mbinna

Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

chrisdone

{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE LambdaCase #-}

-- | Print out the values of all names bound by statments,
-- either x <- y, or let x = y in a do-expression.
--
-- * Enable {-# LANGUAGE TemplateHaskell #-} in your module.
-- * Import Debug.Do
-- * Prefix bindings with _ to ignore them e.g. _foo.
--

corny

package devd

import "strings"

const (
	NotifyEvent = iota
	DeviceAttached
	DeviceDetached
	Unknown
)

aturley

Pony Considerations

If you're thinking of checking out the Pony programming language, here's a list of things that I think are important to know. This list is based on a Tweet that I wrote.

Editor/IDE support

There are Pony packages for several popular editors.

• Emacs
• Sublime

Gankra

Background

methods like push on Vec don't provide anyway for the caller to handle OOM. (I will be using push as substitute for "all allocating APIs" for simplicity here)

• Today we always abort.
• Moving to unwinding is problematic
• unsafe code may be exception unsafe on the basis of current strategy

seeebiii

public class Constants {

    /**
     * Contains the path to your Lambda function code.
     */
    public static final String LAMBDA_TASK_ROOT = System.getenv("LAMBDA_TASK_ROOT");

    /**
     * The environment variable is set to one of the following options, depending on the runtime of the Lambda function:
     * AWS_Lambda_nodejs, AWS_Lambda_nodejs4.3, AWS_Lambda_nodejs6.10