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Go - go install
摘要：zzh@ZZHPC:/zdata/Github/greenlight$ go install honnef.co/go/tools/cmd/staticcheck no required module provides package honnef.co/go/tools/cmd/staticche
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Sed - Extract help usage from comments
摘要：Makefile: ## help: print this help message help: @echo 'Usage:' @sed -n 's/^##//p' ${MAKEFILE_LIST} | column -t -s ':' | sed -e 's/^/ /' confirm: @ech
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Let'sGoFurther - Chapter 19: Building, Versioning and Quality Control
摘要： makemigrationname=createexampletablerun:gorun./cmd/apipsql:psql{GREENLIGHT_DB_DSN} migration: @echo 'Creating migration files for ${name
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Let'sGoFurther - Chapter 18: Metrics
摘要：In routes.go: router.Handler(http.MethodGet, "/debug/vars", expvar.Handler()) func main() { expvar.NewString("version").Set(version) ... func main() {
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Let'sGoFurther - Chapter 17: Cross Origin Requests
摘要：package main import ( "log" "net/http" ) const html = ` <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> </head> <body> <h1>Simple CORS<
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Let'sGoFurther - Chapter 16: Permission-based Authorization
摘要：In errors.go: func (app *application) authenticationRequiredResponse(w http.ResponseWriter, r *http.Request) { message := "you must be authenticated t
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Let'sGoFurther - Chapter 15: Authentication
摘要：const ( ScopeActivation = "activation" ScopeAuthentication = "authentication" ) // Token holds the data for a token. type Token struct { Plaintext str
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Let'sGoFurther - Chapter 14: User Activation
摘要：zzh@ZZHPC:/zdata/Github/greenlight$ migrate create -seq -ext .sql -dir ./migrations create_token_table /zdata/Github/greenlight/migrations/000005_crea
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Viper - Watch and reload configuration from config files
摘要：How to change the cnfiguration for rate limiting in flight? How to change the configuration of pgxpool without restarting the application? How to dyna
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Go - Get current directory of a source file
摘要：package main import ( "fmt" "os" ) func main() { fmt.Println(os.Executable()) fmt.Println(os.Getwd()) } zzh@ZZHPC:~/zd/Github/ztest$ go run main.go /t
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Let'sGoFurther - Chapter 13: Sending Emails
摘要：zzh@ZZHPC:~ curl−w′\nTime:BODY" localhost:4000/v1/users { "user": { "id": 6, "created_at": "2024-11-21T18:33:14+08:00", "nam
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Let'sGoFurther - Chapter 12: User Model Setup and Registration
摘要：zzh@ZZHPC:/zdata/Github/greenlight$ migrate create -seq -ext=.sql -dir=./migrations create_user_table /zdata/Github/greenlight/migrations/000004_creat
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Let'sGoFurther - Chapter 11: Graceful Shutdown
摘要：zzh@ZZHPC:/zdata/Github/greenlight$ go run ./cmd/api time=2024-11-18T19:49:43.864+08:00 level=INFO msg="database connection pool established" time=202
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Let'sGoFurther - Chapter 10: Rate Limiting
摘要：zzh@ZZHPC:/zdata/Github/greenlight$ go get golang.org/x/time/rate@latest go: downloading golang.org/x/time v0.8.0 go: added golang.org/x/time v0.8.0 f
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Let'sGoFurther - Chapter 9: Filtering, Sorting, and Pagination
摘要：zzh@ZZHPC:~$ curl "localhost:4000/v1/movies?title=godfather&genres=crime,drama&page=1&page_size=5&sort=year" {Title:godfather Genres:[crime drama] Pag
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Let'sGoFurther - Chapter 8: Advanced CRUD Operations
摘要：var ( ErrRecordNotFound = errors.New("record not found") ErrEditConflict = errors.New("edit conflict") ) // Update updates a specific record in the mo
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Let'sGoFurther - Chapter 7: CRUD Operations
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Let'sGoFurther - Chapter 6: SQL Migrations
摘要：Installing the migrate tool To manage SQL migrations in this project we’re going to use the migrate command-line tool (which itself is written in Go).
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Let'sGoFurther - Chapter 5: Database Setup and Configuration
摘要：zzh@ZZHPC:/zdata/Github/greenlight dockerpullpostgreszzh@ZZHPC:/zdata/Github/greenlight docker run --name postgres17 -p 5432:5432 -e POSTGRES_USE
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Go - Create a struct with another struct's fields
摘要：package main import ( "fmt" ) type A struct { field1 string } type B struct { field1 string } func main() { a := A{ field1: "aaa", } b := B(a) fmt.Pri
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Let'sGoFurther - Chapter 4: Parsing JSON Requests
摘要：func (app *application) exampleHandler(w http.ResponseWriter, r *http.Request) { var input struct { Foo string `json:"foo"` } // Use io.ReadAll() to r
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Go - JSON Decoding Nuances
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Go - JSON Encoding Nuances
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Let'sGoFurther - Chapter 3: Sending JSON responses
摘要：func (app *application) writeJSON(w http.ResponseWriter, status int, data envelope, headers http.Header) error { js, err := json.MarshalIndent(data, "
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Let'sGoFurther - Choosing a router
摘要：We’re going to use the popular third-party package httprouter as the router for our application, instead of using http.ServeMux from the standard-libr
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Let'sGoFurther - API versioning
摘要：API versioning APIs which support real-world businesses and users often need to change their functionality and endpoints over time — sometimes in a ba
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VSCode - settings.json
摘要：{ "workbench.startupEditor": "none", "[go]": { "editor.insertSpaces": true, "editor.formatOnSave": false }, "editor.fontSize": 16, "terminal.integrate
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Let'sGoFurther - Endpoints and Actions of the Greenlight Project
摘要：Method URL Pattern Action GET /v1/healthcheck Show application health and version informationGET /v1/movies Show the details of all moviesPOST /v1/mov
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Let'sGoFurther - Directory Structure of the Greenlight Project
摘要： mkdir−pbincmd/apiinternalmigrationsremote touch Makefile $ touch cmd/api/main.go At this point your project directory should look exactly li
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PyTorchStepByStep - Chapter 9: Sequence-to-Sequence
摘要：points, directions = generate_sequences(n=256, seed=13) And then let’s visualize the first five squares: class Encoder(nn.Module): def __init__(self,
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LaTex - Disable equation auto numbering
摘要：$$ \Large \begin{align} W_{xr} & = {−0.0930,0.0497,0.4670,−0.5319, \\ W_{xz} & = \beg
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