golang

Links

- <https://golang.org/>
- <https://tour.golang.org/welcome/1>
- <https://godoc.org/>
- <https://golang.org/pkg/>
- <https://golang.org/doc/#articles>
- <https://github.com/avelino/awesome-go>

Workplace Setup

- <https://golang.org/doc/code.html>

Webstuff

- <http://nicolasmerouze.com/share-values-between-middlewares-context-golang/>
- <https://github.com/astaxie/build-web-application-with-golang/blob/master/en/preface.md>

• FMT

  • https://golang.org/pkg/fmt/

    General:

    %v the value in a default format when printing structs, the plus flag (%+v) adds field names %#v a Go-syntax representation of the value %T a Go-syntax representation of the type of the value %% a literal percent sign; consumes no value Boolean:

    %t the word true or false Integer:

    %b base 2 %c the character represented by the corresponding Unicode code point %d base 10 %o base 8 %q a single-quoted character literal safely escaped with Go syntax. %x base 16, with lower-case letters for a-f %X base 16, with upper-case letters for A-F %U Unicode format: U+1234; same as “U+%04X” Floating-point and complex constituents:

    %b decimalless scientific notation with exponent a power of two, in the manner of strconv.FormatFloat with the ‘b’ format, e.g. -123456p-78 %e scientific notation, e.g. -1234.456e+78 %E scientific notation, e.g. -1234.456E+78 %f decimal point but no exponent, e.g. 123.456 %F synonym for %f %g %e for large exponents, %f otherwise %G %E for large exponents, %F otherwise String and slice of bytes:

    %s the uninterpreted bytes of the string or slice %q a double-quoted string safely escaped with Go syntax %x base 16, lower-case, two characters per byte %X base 16, upper-case, two characters per byte Pointer:

    %p base 16 notation, with leading 0x

• Libraries

  • Die Bibliothek compilieren: go build pfad/ohne/$GOPATH/$projectname/

    Danach muss die Bibliothek installiert werden: go install pfad/wie/oben

    Sie kann auch getestet werden: https://golang.org/doc/code.html#Testing

• Generate 2 dimensional Array at Runtime

  • http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime#Go

Gin Framework

- <https://godoc.org/github.com/gin-gonic/gin>
- <https://github.com/gin-gonic/gin>

DB

- <https://golang.org/pkg/database/sql/>
- <https://github.com/lib/pq>
- <https://godoc.org/github.com/lib/pq>
  
  Multiple Values:
- <https://stackoverflow.com/questions/17845619/how-to-call-the-scan-variadic-function-in-golang-using-reflection>
- <http://jordanorelli.com/post/32665860244/how-to-use-interfaces-in-go>