Golang

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Workplace Setup

Webstuff

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

DB

Multiple Values: