| // Code generated - DO NOT EDIT. | |
| // This file is a generated binding and any manual changes will be lost. | |
| package token | |
| import ( | |
| "math/big" | |
| "strings" | |
| ethereum "github.com/ethereum/go-ethereum" |
| package main | |
| import ( | |
| "fmt" | |
| "github.com/ethereum/go-ethereum/accounts" | |
| "github.com/ethereum/go-ethereum/common/hexutil" | |
| "github.com/ethereum/go-ethereum/crypto" | |
| ) |
| [ | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "name", | |
| "outputs": [ | |
| { | |
| "name": "", | |
| "type": "string" | |
| } |
Sometimes a python script will simply hang forever with no indication of where things went wrong. Perhaps it's polling a service that will never return a value that allows the program to move forward. Here's a way to see where the program is currently stuck.
Install gdb.
# Redhat, CentOS, etc
The following commands will start a container with Kafka and Zookeeper running on mapped ports 2181 (Zookeeper) and 9092 (Kafka).
docker pull spotify/kafka
docker run -d -p 2181:2181 -p 9092:9092 --env ADVERTISED_HOST=kafka --env ADVERTISED_PORT=9092 --name kafka spotify/kafka
ADVERTISTED_HOST was set to kafka, which will allow other containers to be able to run Producers and Consumers.
2015-01-29 Unofficial Relay FAQ
Compilation of questions and answers about Relay from React.js Conf.
Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.
Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).
(by @andrestaltz)
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.
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
