tdelabro

What is Rust's standard library?

One of the Rust programming language promises is "zero-cost abstraction". Therefore the language itself is pretty conservative about what it incorporates. Types that are basics in other languages, such as string, or features, such as async, cannot be part of the language itself because they are costly abstractions. The user may not need them at all, or he may prefer other alternative implementations. To make those types and functions available nonetheless, they are available as part of the Rust standard library, known as std. Part of this library, known as the prelude is imported by default in each .rs file so you don't have to repeat yourself too much.

Why would you want a no_std version of your crate?

Most of the time having this standard library available is not a problem because you run your code on a pretty standard environment: your own computer or a Linux server somewhere in the cloud. However, somet

gdsotirov

# Check whether an input variable is a positive integer in Terraform
# Tested with version 0.13
variable "release" {
	type = number
	description = "Release number"
	default = 0
	validation {
		condition = tonumber(var.release) == floor(var.release)
		error_message = "Release should be an integer!"
	}

sahilsk

Kafka Cheat Sheet

Display Topic Information

$ kafka-topics.sh --describe --zookeeper localhost:2181 --topic beacon
Topic:beacon	PartitionCount:6	ReplicationFactor:1	Configs:
	Topic: beacon	Partition: 0	Leader: 1	Replicas: 1	Isr: 1
	Topic: beacon	Partition: 1	Leader: 1	Replicas: 1	Isr: 1

tshirtman

[app]

# (str) Title of your application
title = Kpritz

# (str) Package name
package.name = Kpritz

# (str) Package domain (needed for android/ios packaging)
package.domain = fr.tshirtman.kpritz

earthgecko

#!/bin/bash
# bash generate random alphanumeric string
#

# bash generate random 32 character alphanumeric string (upper and lowercase) and 
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1

jexchan

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "your_email@youremail.com"