Go PKG Study and practice-Buildin

This is a creation in Article, where the information may have evolved or changed. The BUILTIN package contains various types of Go languages: <pre><code>unint8, UInt16, UInt32, Uint64int8, Int16, Int32, Int64float32, Float64, complex64, complex128string, int, uintptr, byte, runeconst iota = 0, niltype error interface {}</code></ Pre> and common built-in functions: ' Func append (slice []type, Elems ... Type) []typefunc copy (DST, src []type) intfunc Delete (M map[type]type1, key Type)//array, pointer, slice, string, channel Func len (v type) IntFunc cap (v type) int//slice, map, chanfunc make (t type, size ... Integertype) Typefunc New (Type) *typefunc complex (R, I floattype) Complextypefunc Real (c ComplexType) Floattypefunc Imag ( C ComplexType) Floattypefunc Close (c chan<-Type) func panic (v interface{}) func recover () interface{}func print (args: . Type) func println (args ... Type) The following is a simple program that uses built-in functions: ~~~package MainFunc Main () {//Make a slice, copy, Lens: = Make ([]string, 0) s = append (S, "Apple ") s = append (S," Orange "," Peach ") println (" Len of S: ", Len (s)) for I, V: = range S {println (i, v)}s2: = Make ([]string, 5) N: = Copy (s2, s) println ("Len of S2:", Len (S2)) println ("Copied len:", N) for I, V: = Range S2 {println (i, v)}//make a channel, close a CHANNELC: = Make (Chan string, 2) C <-"Dolphin" C <-"Shark" println (<-c) println (<-c) c <-"Seal" println (<-c) Close (c) If _, OK: = <-c; OK {println ("channel is Open")} else {println ("channel is closed")}}~~~217 click  ∙  1 likes