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golang_topics

Golang Topics

A

B

C

D

adding lines during, 218-219

definition and overview of, 213

delve, using for, 221-224

fmt package, using for, 219, 222

GNU Debugger, using for, 224-225

of HTTP requests, 266-268

logging role in, 214, 216

test role in, 226

tool, selecting, 225

of web servers, 246

DecodeFile function, 301

default case, 61-62

default value, 91-93, 100

defer (defined), 53

defer statement, 66-69, 297

delve, 221-226

dependencies, 178-180, 183, 340

Developer Tools, 142-143

dictionary (term), 78, 80

directory, listing, 290, 295-296

disasters, handling, 129

disk, reading from, 140, 142, 154

distributed programming, 1

Docker, 334-336, 339-340

documentation, 195-198

dot notation

data accessing with, 84, 90, 101

sphere, working with, 104

values, assigning with, 85-87

dynamically typed languages, 13-14, 26

E

echo function, 222-223, 225

elapsed real time (term), 317

elements, forming collection of, 21

else if statement, 57-58, 60-61, 68

else statement, 55-57

encoding/json package, 285, 287

encoding standards, 122

English-language special characters, 116, 122-123

environment, 8, 329-331, 340

Errorf method, 133

error log, 213

errors

checking, 137

creating, 132-133

formatting, 133-134

handling, 15, 129-131, 137-138

logging, 214-215

returning from function, 134-135

type, understanding, 132

and usability, 135-136

writing, 242

errors package, 132-133

exit codes and meanings, 228

exiting, preventing process from, 163

F

fatal error, 215

file

as block, 35, 40

configuration, managing with, 299-300

copying, 296-298, 303

creating, 290, 292-294

deleting, 298-299

downloading, 336-338

existence, checking on, 303

importance of, 289-290

managing in directory, 227

name, 295-296

reading, 130-131, 140, 290-291

reformatting, 187

writing logs to, 216-217

writing to, 290, 294-295

file permissions, 213, 292-294, 295-296, 303

FindAllString function, 313

flag package, 232-235, 239

FlagSets, 237

floats, 20-21

flow control, 161-163

fmt package, 133, 219-222, 225-226

for loop, 167-169, 171

for statement, 62-66

4-bit integers, 18-19, 26

404s, 248-249

framework libraries, 257

FreeBSD, 4

French, Renee, 10

func keyword, 42

function

arguments and types, modifying for, 51

creating and calling, 43-44

definition and overview of, 41-42

errors, returning from, 134-135

method compared to, 101, 105, 113

passing as argument, 52

passing as value, 49-50

results, returning, 42-45

functional tests, 200

function arguments, 164

function signature, 41, 46-47

G

gdb, 224-225

GET requests, 255-258, 261-262, 266, 272

git command, 235

Github account, 8

Github API, 273, 285

GMT, 326

GNU Debugger, 224-225

GOARCH environment variable, 331

go build, 9-11, 229-230

go clean, 9

Go (Golang) description and overview, 1, 3-4

godoc, 192-197

GoDoc site, 197

go env command, 329-330, 340

gofmt

conventions, 197

golint compared to, 190-191

overview of, 186-187

plugins running on, 188

remembering to use, 196

go get command, 177-179, 183, 338-339

Go Gopher, 10-11

go install, 242

go keyword, 151-152

golint, 190-192, 196

“Goodbye Cruel World” value, 223, 225

Google, 3-4

Google Chrome Developer Tools, 260

GOPATH variable, 6-8

Go projects, directory structure for, 6-7

Goroutines

advantages of, 139, 153-154

Channels compared to, 171

communications between, 155-156

communication with, 159, 168

concurrent operations, handling with, 145, 161

defining, 152

execution, pausing, 327

flow control alternatives to, 163

HTTP requests, aid in making, 271

latency, managing with, 147-152

managing, 156-157

go run, 9-11

go set, 242

go test command, 201

got want pattern, 203-204

graphical user interfaces (GUI), 227

greeting, returning, 202-204

Greeting function, 204-206

Griesemer, Robert, 3

guessing game, 218-219

H

Half function, 135

HandleFunc method, 244, 247

Handler, 248-249

handler functions, 247-249

hash (term), 78, 80

header, setting, 249-250

“Hello World” file, 240-241

HelloWorld function, 244, 252

“Hello World” program, 8-9, 173

“Hello World” value, 223

“Hello World” web server, 243-249

help text, 234-239

html package, 315

HTTP (Hypertext Transfer Protocol)

complexity of, 271

definition and overview of, 259-261

JSON received over, 285-286

scraping, 311-312, 315

HTTP clients, 267, 271-272

HTTP header, 250

http package, 257

HTTP requests, 259-261, 264-268, 271

HTTP servers

creating, 243-245, 249-250, 253-254

data and requests sent to, 255-258

response to clients, 251

HTTPS server, 258

I

identifiers, uppercase versus lowercase letters starting, 183

idiomatic Go

defined, 185

error handling and, 130-131

golint aid in learning, 191

interface naming, 198

idiomatic variable, 33

if statement, 53-55, 69, 219

import statement, 174, 176

incorrect type, passing, 16-17

index, accessing array element with, 81

init statement, 63-64

inner blocks, 34

inputs and outputs, 228-229

installing Go, 4-8

integers, 15-16, 18-20, 45-46

integration tests, 200

interfaces, 109-113, 189, 198

international characters, 122-123, 127

interpreted string literals, 115, 116-117, 127

ioutil package, 290-298, 303

J

Java (programming language), 10, 138, 152, 192-193

javadoc, 192-193

JavaScript (programming language), 4, 13, 15, 286-287

JSON

advantages of, 286

APIs, 275

data posted as, 264

data types, 283-285

decoding, 281-282, 286

description and overview of, 273-274

encoding, 286

fields, mapping, 287

files, 299-300

HTTP, received over, 285-286

HTTP server sending, 249-250, 259

requesting data as, 267-268

string, 263

TOML compared to, 301, 303

using with Go, 275-281

K

key names, 278

L

languages, non-English, 126, 204-206

languages, programming, 9, 13, 89, 155-156

See also specific language, e.g.: Python (programming language)

latency, 147-152

lexical (defined), 33-34

lexical scoping, 33-34

LICENSE file, 182

Linux, 4-5, 7-8, 340

list command, 225

ListenAndServe method, 244, 258

ListenAndServeTLS method, 258

logging, 213-217, 226

logical operators, 59-60

log package, 215-216, 226

looking for a needle in a haystack, 305-306

looping, 62-63

lowercase, 124, 174, 183, 188, 278

M

macOS, 4, 5, 7-8

main package, 174

make builtin function, 80

Makefile, 196-197

malicious web server, 338

maps, 78-80

Marshal function, 275-276

MatchString function, 306

mathematical operations, 13, 21

math package, 189-190

memory, 25, 39, 155-156

memory address, 35-38

messages and messaging

advantages of, 156

to Channels, 157-160, 171

between Goroutines, 170

response to, 167

methods, 101-103, 105-109, 113-114

method sets, 103-105

monotonic clock (concept), 317

multiplayer games, 142

multiple defer statements, 67-69

multiple values, function returning, 44-45, 51

multiple variables, 220

MustCompile function, 316

MySQL database, 112-113

N

named return values, 46-48

names, key, 278

names beginning with uppercase letter, 100

naming conventions, 188-190

nesting structs, 89-91, 99

.NET, 178

net/http package, 243-244, 261-262, 264

network, 141, 154

network latency, 147-150, 152

network programming, 1, 51

Network Time Protocol (NTP), 318-319, 326-327

NewAlarm function, 92

NewDecoder function, 285

NewFlagSet, 236, 242

new keyword, 87-88

NewRequest method, 272

Nginx, 152, 213-214

Node.js, 3, 152, 178, 186

non-blocking code, 147

NotFound method, 249

numbers, determining if odd or even, 42

numeric notation, 292-293

numeric types, 18-19, 21, 25

O

object-oriented language, 112

omitempty struct tag, 287

OpenFile function, 297

Open function, 297

Open Source blogging engine, 214

Open Source Licenses, 182

Open Source projects, 186, 197

operating system, 227, 329

operators, 68

OR logical operator, 69

os package, 230, 234, 303

outer blocks, 34

P

package level block, 40

package managers, 178, 339

packages, 173-182

panic, using, 136-138

parallelism, 141-142

Pascal Case, 189

pausing process, 320, 327

permissions, 213, 292-296, 303

Pi constant, 174

Pike, Rob, 3, 4, 10, 122, 138, 142, 154

Plan 9 operating system, 3

platform, 331-332

pointer, 35-38, 96-100, 105-109

pointer reference, 106-109, 113

polymorphism (defined), 113-114

POSIX compliance, 239

postData variable, 263

POST requests, 255-258, 262-264, 272

post statement, 63-64

PowerOn method, 109-111

Printf function, 220

private values, 95

process, running indefinitely, 162-163

programming languages, 9, 13, 89, 155-156

See also specific language, e.g.: Python (programming language)

program speed, factors affecting, 140-141, 151-152

public values, 95

Python (programming language), 3-4, 13, 178

Q

Quickfix menu, 191

R

range clause, 64-66

raw command-line arguments, 229-230

raw string literals, 117-118, 235

Readfile function, 130-131, 291

README file, 182

real time (term), 317

receiver function, 160

recursive functions, 48-49, 51

reflect package, 22-23, 26

regex package, 306

regular expressions

case sensitivity in, 315

data, parsing with, 311-315

data, transforming with, 309-311

definition and overview of, 305-307

end of line, character signifying, 316

strings package compared to, 315

syntax, 307-308, 315

validation, using for, 308-309

Remove function, 298

request, setting on custom header, 271

requests, types of, 253-254, 256

requests and responses, examining, 245-247

response, status code of, 271

response speed, factors affecting, 269

responseTime function, 148

ResponseWriter, 258

return values, 134, 138

Reverse function, 176

Robot interface, 109-112

robots.txt file, 214

routing, 247, 257

Ruby (programming language), 4, 178

rune literals, 116-118

runtime errors, 213

S

sayHello function, 14-15

Schaaf, Herman, 127

scope (defined), 33

security issues, 183, 255, 337, 338, 340

select statement, 164-171

sequential tasks, 139-142

server security issues, 255-258

SGOPATH, 177, 183

short functions, 51

shorthand variables, 29-30

short variable, 32, 40

short variable assignment, 88-90

signed integers, 19-20

single result, function returning, 42-44

64-bit floats, 21

64-bit integer, 20

sleeping, 319-320, 327

slice

adding elements to, 74-76, 81

of bytes, 291

copying elements from, 77

defined, 73, 78

deleting elements from, 76, 80

length limit, 80

methods associated to, 114

numbers variables containing, 45

testing, use in, 206

using, criteria for, 80-81

working with, 73-74

slowFunc function, 144-146, 158

slowFunc method, 158-159

software, sharing, 339-340

sort comand, 227-228

source code, 39

space, trimming, 125-126

special characters, 116, 122-123, 127

Specification, 199

spheres, 103-104

Sqrt function, 189-190

square root, 190

Standard Error, 242

Standard Input (defined), 229

Standard Output (defined), 229

statically typed languages, 14, 26

strconv package, 23-24

string literals, 115-118, 127

strings

array elements, assignment to, 72

concatenating, 118-121, 126-127, 207-209

converting to and from, 21, 23, 120, 174

creating, 121, 127, 291

definition and overview of, 15, 21, 122-123, 126

format, representing time in, 322-323

lowercase, changing, 124, 174

number types distinguishing from, 25

parsing, 322-323

as programming building block, 115

searching for, 306-307

variable initializing with type of, 27-28

working with, 123-126

written to file, 294

strings package, 125, 174-175, 195, 315

stringutil package, 176, 179

strongly typed languages, 13-14, 26

struct

checking type of, 94-95

comparing, 93-95

copying, 96-99, 100

creating, 99, 206, 276, 286

data encoded to and from, 287

data type in, 100

decoding to JSON, 281-282

default value, creating for, 91-93

definition and overview of, 83-85

empty, encoding to JSON, 280-281

empty fields, omitting, 280-281, 287

encoding as JSON, 276-278

equivalence, testing for, 94

exporting, 100

initializing, 84-89

nesting, 89-91, 99

tags, 278-280, 287

time, 323-325

values, printing, 220-221

subcommands, 235-239

Sub method, 324

subslice, 80

substring, searching for, 124-125

switch statements, 60-62, 68, 164

systems programming, 1

T

tab, representation of table of binary operators table of bitwise operators table of comparison operators table of escape sequences table of keywords table of predeclared names table of Printf verbs table of UTF-8 encodings table, Sizeof table-driven testing table tests tag, struct field tagless switch statement tags, build targets TCP socket tax code techniques, in-place slice tempconv example tempconv example package temperature conversion example tempflag example template, | in template action,

Range

Return to X, Kotlin glossary, Programming glossary, Kotlin, range Function, Functions-Methods, Standard Libraries

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Functions and Methods: Bash Functions, C Function, C++ Functions, C# Functions, , Clojure Functions, COBOL Functions, Fortran Functions, Golang Functions, Haskell Functions, Java Methods, JavaScript Functions, Kotlin Methods, Oracle PL/SQL Functions, Python Functions, PowerShell Functions, Scala Functions, Swift Functions, T/SQL Functions. (navbar_functions)


Cloud Monk is Retired (for now). Buddha with you. © 2005 - 2024 Losang Jinpa or Fair Use. Disclaimers

SYI LU SENG E MU CHYWE YE. NAN. WEI LA YE. WEI LA YE. SA WA HE.



Cloud Monk is Retired (for now). Buddha with you. © 2005 - 2024 Losang Jinpa or Fair Use. Disclaimers

SYI LU SENG E MU CHYWE YE. NAN. WEI LA YE. WEI LA YE. SA WA HE.


template API template, dot . in template.Funcs method template.HTML type template.Must function template.New function template.Parse method temporary directory temporary file Terraform test assertion test, black-box test, brittle test, character test coverage test dependency, cyclic Test-Driven Development (TDD) test, echo test failure message test files, placement of Test function test, integration test of word example test package, external test, string test, white-box _test.go file testing testing a command testing package testing, randomized testing, table-driven testing.B type testing.T type (*testing.T).Errorf method (*testing.T).Fatal method tests, running tests, writing tests, writing effective text editor text/scanner package text string text/tabwriter package text/template package third-party dependencies third-party Go plugins third-party packages third-party tools Thompson, Ken Thompson, Ken, Preface thread thread-local storage three-D surface figure thumbnail example thumbnail example package thumbnail sequence diagram ticker, using time time package time.After function time.AfterFunc function time.Duration type time.Minute constant time.Now function time.Parse function time.Second constant time.Since function time.Sleep method time.Tick function time.Time type time.Time.Format method timeout timers time structs time zone differences 32-bit floats 32-bit integer title example title function titles, writing to terminal token-based decoder API token-based XML decoding ToLower function TOML files tool, go tool, go doc tool, godoc, Preface tool, gofmt tool, goimports tool, golint topological sort algorithm topoSort example ToUpper method trace example trace, stack tree, binary treesort example triangle true boolean constant tuple assignment tuple assignment types checking converting between type ←chan T, receive-only channel type chan← T, send-only channel number of overview of type switch, case in type switch, default case in type, abstract type, aggregate type, array type assertion type assertion, interface type assertion, ok value from type, bool type, bufio.Scanner type, byte type, bytes.Buffer type, Celsius type, chan type, channel type, complex type, composite, Preface type composition, Preface type, concrete type declaration type, displaying methods of a type, empty interface type, error built-in type, Fahrenheit type, function type, http.HandlerFunc type, http.Request type, http.ResponseWriter type, int type, interface{} type, interface type, interface{} type, interface dynamic type, json.Decoder type, json.Encoder type keyword type, map type, method receiver type mismatch type, named type, net.Conn type, net.Listener type, numeric type, *os.File type, os.FileInfo type, os.LinkError type, os.PathError type, recursive type, reference type, reflect.StructTag type, reflect.Type type, reflect.Value type, rune type, slice type, sort.IntSlice type, strings.Reader type, strings.Replacer type, struct type, struct{} type switch statement type, sync.Mutex type, sync.Once type, sync.RWMutex type, sync.WaitGroup type, syscall.Errno type, template.HTML type, testing.B type, testing.T type, time.Duration type, time.Time type, uint type, uintptr type, underlying type, unidirectional channel type, unnamed struct type, unsafe.Pointer type, url.URL types, untyped constant working with

U

UDP socket Unicode encoding scheme Unit Tests uint type uintptr type unary operator - unary operator + unbuffered channel undefined behavior underlying array underlying type Unicode code point Unicode escape unicode package unicode.IsDigit function unicode.IsLetter function unicode.IsLower function unicode.IsSpace function unicode.IsUpper function Unicode replacement character unicode/utf8 package Unicode standard unidirectional channel type union, discriminated universe block Unix domain socket UNIX operating system The Unix Programming Environment (Thompson) unmarshaling JSON unnamed struct type unnamed variable unreachable statement unsafe package unsafe.AlignOf function unsafe.Offsetof function unsafe.Pointer conversion unsigned integer (defined) unsigned integer unsafe.Pointer type unsafe.Pointer zero value unsafe.Sizeof function uppercase untyped constant types unused parameter URL URL escape url.QueryEscape function url.URL type urlvalues example usability, errors and User Story UTF-8 UTF-8 encoding scheme UTF-8 encodings, table of utf8.DecodeRuneInString function utf8.RuneCountInString function utf8.UTFMax value

V

W

X

Z

External sites

Wikipedia

Snippet from Wikipedia: Go (programming language)

Go is a statically typed, compiled high-level programming language designed at Google by Robert Griesemer, Rob Pike, and Ken Thompson. It is syntactically similar to C, but also has memory safety, garbage collection, structural typing, and CSP-style concurrency. It is often referred to as Golang because of its former domain name, golang.org, but its proper name is Go.

There are two major implementations:

  • Google's self-hosting "gc" compiler toolchain, targeting multiple operating systems and WebAssembly.
  • gofrontend, a frontend to other compilers, with the libgo library. With GCC the combination is gccgo; with LLVM the combination is gollvm.

A third-party source-to-source compiler, GopherJS, compiles Go to JavaScript for front-end web development.

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golang_topics.txt · Last modified: 2020/11/20 01:09 by 127.0.0.1