golang-studygroup-1

golang-study-1

##Notes, linkdump, for golang-studygroup-1 on 9-August-2016 

https://play.golang.org/p/dJLQZz-hVY - byte fun
iota - what is it? 
Golang truthiness numbers? 

https://golang.org/pkg/log/#New

Constants

const (
        // Bits or'ed together to control what's printed.
        // There is no control over the order they appear (the order listed
        // here) or the format they present (as described in the comments).
        // The prefix is followed by a colon only when Llongfile or Lshortfile
        // is specified.
        // For example, flags Ldate | Ltime (or LstdFlags) produce,
        //	2009/01/23 01:23:23 message
        // while flags Ldate | Ltime | Lmicroseconds | Llongfile produce,
        //	2009/01/23 01:23:23.123123 /a/b/c/d.go:23: message
        Ldate         = 1 << iota     // the date in the local time zone: 2009/01/23
        Ltime                         // the time in the local time zone: 01:23:23
        Lmicroseconds                 // microsecond resolution: 01:23:23.123123.  assumes Ltime.
        Llongfile                     // full file name and line number: /a/b/c/d.go:23
        Lshortfile                    // final file name element and line number: d.go:23. overrides Llongfile
        LUTC                          // if Ldate or Ltime is set, use UTC rather than the local time zone
        LstdFlags     = Ldate | Ltime // initial values for the standard logger
)
 int as a bool in golang? 
 allocate the flag's value in a single byte. 
 Use case: write your own lib that exposes flags and use less memory
 check the reference
 quicker hop to the memory than a bool 
 
 Great Question: does it ever make sense to use flags in non-binary data? 
 
 
 The concept of Mechanical Sympathy 
 
 Bitwise Operations? 
 
 
https://changelog.com/gotime-6/

Concurrency, Event-Driven programming

Buffered Channels and Unbuffered Channels - what are they? How and when to use them? slack channel? 

"device drivers, low-level graphics, communications protocol packet assembly, and decoding."

https://github.com/golang/net/blob/master/context/context.go#L133

https://blog.golang.org/context

https://vimeo.com/115309491


distributed tracing golang

https://github.com/go-kit/kit


lunk provides a set of tools for structured logging in the style of Google's Dapper
https://github.com/codahale/lunk


https://github.com/womenwhogonyc/chat  - starter things to build
Learing Redigo, Revel (web framework in Go), boltdb, to make a chat server 

APIs in golang?  How to structure your code?  Best practices (Ben Johnson's slide) 
Chapters 10 and 11 for goinaction book? can we ask Bill for them?

##TOSTUDY and Discuss for Thursday 11 August 2016

Chapter 4 - slices, arrays 

SEE YOU THURSDAY :D :D