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https://github.com/demdxx/gocast
Simple basic types cast for GO
https://github.com/demdxx/gocast
cast go golang types
Last synced: 9 days ago
JSON representation
Simple basic types cast for GO
- Host: GitHub
- URL: https://github.com/demdxx/gocast
- Owner: demdxx
- License: mit
- Created: 2014-06-14T08:03:45.000Z (about 10 years ago)
- Default Branch: master
- Last Pushed: 2024-04-18T11:49:41.000Z (2 months ago)
- Last Synced: 2024-06-18T20:26:01.248Z (9 days ago)
- Topics: cast, go, golang, types
- Language: Go
- Homepage:
- Size: 95.7 KB
- Stars: 22
- Watchers: 3
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Contributing: .github/CONTRIBUTING.md
- License: LICENSE
Lists
- awesome-github-star - gocast
README
# GoCast
[](https://godoc.org/github.com/demdxx/gocast)
[](https://github.com/demdxx/gocast/actions?workflow=Tests)
[](https://goreportcard.com/report/github.com/demdxx/gocast)
[](https://coveralls.io/github/demdxx/gocast?branch=master)
## Introduction
GoCast is a powerful Go library that allows you to easily convert between different basic types in a consistent and efficient way. Whether you need to convert strings, numbers, or other basic types, GoCast has got you covered.
## Features
- **Universal Type Casting**: GoCast provides a set of methods for universal type casting, making it easy to convert data between various types.
- **Struct Field Manipulation**: GoCast allows you to set and retrieve values of struct fields dynamically, making it a valuable tool for working with complex data structures.
- **Custom Type Support**: You can define custom types and implement your own conversion logic, giving you full control over how data is cast.
## Installation
To use GoCast in your Go project, simply import it:
```go
import "github.com/demdxx/gocast/v2"
```
## Usage Example
Here are some examples of how you can use GoCast:
```go
// Example string casting:
gocast.Str("strasstr") // "strasstr"
gocast.Str(8) // "8"
gocast.Str(8.31) // "8.31"
gocast.Str([]byte("one time")) // "one time"
gocast.Str(nil) // ""
// Example number casting:
gocast.Number[int](8) // 8
gocast.Number[int](8.31) // 8
gocast.Number[int]("8") // 8
gocast.Number[int](true) // 1
gocast.Number[int](false) // 0
var eight any = 8
gocast.Number[int](eight) // 8
gocast.Cast[int](eight) // 8
gocast.Number[int](nil) // 0
// Number converts only into numeric values (simpler and faster then Cast)
gocast.Number[float32]("2.12") // 2.12
// Cast converts any type to any other type
gocast.Cast[float64]("2.") // 2.0
val, err := gocast.TryCast[int]("123.2") // 123,
res := gocast.Map[string, any](struct{ID int64}{ID: 1}) // map[string]any{"ID": 1}
```
```go
func sumAll(vals ...any) int {
var result int = 0
for _, v := range vals {
result += gocast.Number[int](v)
}
return result
}
```
## Struct Field Manipulation
GoCast also allows you to work with struct fields dynamically:
```go
type User struct {
ID uint64
Email string
}
var user User
// Set structure values
err := gocast.SetStructFieldValue(&user, "ID", uint64(19))
err := gocast.SetStructFieldValue(&user, "Email", "[email protected]")
id, err := gocast.StructFieldValue(user, "ID")
email, err := gocast.StructFieldValue(user, "Email")
fmt.Printf("User: %d - %s", id, email)
// > User: 19 - [email protected]
```
## Custom Type Support
You can define and use custom types with GoCast:
```go
// Define custom type
type Money int64
func (m *Money) CastSet(ctx context.Context, v any) error {
switch val := v.(type) {
case Money:
*m = val
default:
*m = Money(gocast.Float64(v) * 1000000)
}
return nil
}
// Use custom type in structs
type Car struct {
ID int64
Price Money
}
var car Car
// Mapping values into struct
gocast.TryCopyStruct(&car, map[string]any{"ID":1, "Price": "12000.00"})
```
## Benchmarks
Here are some benchmark results for GoCast:
```sh
> go test -benchmem -v -race -bench=.
goos: darwin
goarch: amd64
pkg: github.com/demdxx/gocast/v2
BenchmarkApproachTest
BenchmarkApproachTest/bench1
BenchmarkApproachTest/bench1-24 348097 3064 ns/op 0 B/op 0 allocs/op
BenchmarkApproachTest/bench2
BenchmarkApproachTest/bench2-24 394160 3005 ns/op 0 B/op 0 allocs/op
BenchmarkBool
BenchmarkBool-24 20453542 58.87 ns/op 0 B/op 0 allocs/op
BenchmarkToBoolByReflect
BenchmarkToBoolByReflect-24 17354990 70.62 ns/op 0 B/op 0 allocs/op
BenchmarkToFloat
BenchmarkToFloat-24 10951923 107.0 ns/op 0 B/op 0 allocs/op
BenchmarkToInt
BenchmarkToInt-24 9870794 121.1 ns/op 0 B/op 0 allocs/op
BenchmarkToUint
BenchmarkToUint-24 9729873 121.3 ns/op 0 B/op 0 allocs/op
BenchmarkToStringByReflect
BenchmarkToStringByReflect-24 922710 1601 ns/op 5 B/op 0 allocs/op
BenchmarkToString
BenchmarkToString-24 836929 1622 ns/op 5 B/op 0 allocs/op
BenchmarkGetSetFieldValue
BenchmarkGetSetFieldValue/set
BenchmarkGetSetFieldValue/set-24 1000000 1021 ns/op 64 B/op 4 allocs/op
BenchmarkGetSetFieldValue/get
BenchmarkGetSetFieldValue/get-24 1869465 643.8 ns/op 48 B/op 3 allocs/op
BenchmarkParseTime
BenchmarkParseTime-24 374346 3130 ns/op 700 B/op 17 allocs/op
BenchmarkIsEmpty
BenchmarkIsEmpty-24 37383031 31.23 ns/op 0 B/op 0 allocs/op
PASS
ok github.com/demdxx/gocast/v2 17.982s
```
## License
GoCast is released under the MIT License. See the [LICENSE](LICENSE) file for details.