e-t-u

Rust Error Handling Cheatsheet - Result handling functions

Introduction to Rust error handling

Rust error handling is nice but obligatory. Which makes it sometimes plenty of code.

Functions return values of type Result that is "enumeration". In Rust enumeration means complex value that has alternatives and that alternative is shown with a tag.

Result is defined as Ok or Err. The definition is generic, and both alternatives have

t27

Dealing with the Linux OOM Killer at the program level

Do this in cases when you dont want to change the os-level settings, but only want to disable the OOM killer for a single process. This is useful when youre on a shared machine/server.

The OOM killer uses the process level metric called oom_score_adj to decide if/when to kill a process. This file is present in /proc/$pid/oom_score_adj. The oom_score_adj can vary from -1000 to 1000, by default it is 0.

You can add a large negative score to this file to reduce the probability of your process getting picked and terminated by OOM killer. When you set it to -1000, it can use 100% memory and still avoid getting terminated by OOM killer.

jzillmann

JMH

• http://openjdk.java.net/projects/code-tools/jmh/
• JMH Samples

Online Visualizer

• https://nilskp.github.io/jmh-charts/
• https://github.com/jzillmann/jmh-visualizer

myniva

task printTaskInputs {
        doLast {
            project.getTasks().each { task ->
                println "--------------------------------------------------------------------------------"
                println " Task '${project.name}:${task.name}'"
                println "--------------------------------------------------------------------------------"
                println ""

                println "File inputs:"
                task.inputs.files.each {

meirbon

# 1. First of all of course get Manjaro:
https://manjaro.org/get-manjaro/

# I recommend using Etcher to copy the image to your USB:
https://etcher.io/

# 2. Before installing make sure:
# - Secure boot is disabled in BIOS
# - Your SSD, HDD or NVME drive is set to AHCI instead of RAID
# - Fastboot should be on Auto or minimal, but this shouldn't matter to much

lummie

package enum_example

import (
	"bytes"
	"encoding/json"
)

// TaskState represents the state of task, moving through Created, Running then Finished or Errorred
type TaskState int

zapstar

# Move to root directory...
cd /
mkdir keys
cd keys

# Generate a self signed certificate for the CA along with a key.
mkdir -p ca/private
chmod 700 ca/private
# NOTE: I'm using -nodes, this means that once anybody gets
# their hands on this particular key, they can become this CA.

taoyuan

# npm using https for git
git config --global url."https://github.com/".insteadOf git@github.com:
git config --global url."https://".insteadOf git://

# npm using git for https
git config --global url."git@github.com:".insteadOf https://github.com/
git config --global url."git://".insteadOf https://

jamesallman

// http://docs.groovy-lang.org/latest/html/documentation/grape.html
// http://mvnrepository.com/artifact/org.codehaus.groovy.modules.http-builder/http-builder/0.7.1
groovy.grape.Grape.grab(group:'org.codehaus.groovy.modules.http-builder', module:'http-builder', version:'0.7.1')
import groovyx.net.http.HTTPBuilder

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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