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name: Go package | ||
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on: [push] | ||
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jobs: | ||
test: | ||
runs-on: ubuntu-latest | ||
strategy: | ||
matrix: | ||
go-version: [ '1.18', '1.19', '1.20', '1.21' ] | ||
steps: | ||
- uses: actions/checkout@v3 | ||
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- name: Set up Go ${{ matrix.go-version }} | ||
uses: actions/setup-go@v3 | ||
with: | ||
go-version: ${{ matrix.go-version }} | ||
cache: true | ||
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- name: Test with Go ${{ matrix.go-version }} | ||
run: go test -json > TestResults-${{ matrix.go-version }}.json | ||
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- name: Upload Go test results for ${{ matrix.go-version }} | ||
uses: actions/upload-artifact@v3 | ||
with: | ||
name: Go-results-${{ matrix.go-version }} | ||
path: TestResults-${{ matrix.go-version }}.json |
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.idea | ||
.vscode |
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MIT License | ||
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Copyright (c) 2022 survivorbat | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. |
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MAKEFLAGS := --no-print-directory --silent | ||
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default: help | ||
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help: | ||
@echo "Please use 'make <target>' where <target> is one of" | ||
@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z\._-]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST) | ||
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t: test | ||
test: fmt ## Run unit tests, alias: t | ||
go test ./... -timeout=60s -parallel=10 --cover | ||
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fmt: ## Format go code | ||
@go mod tidy | ||
@go fmt ./... |
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# 👉 Golang Pointers | ||
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[![Go package](https://github.com/survivorbat/ptr/actions/workflows/test.yaml/badge.svg)](https://github.com/survivorbat/ptr/actions/workflows/test.yaml) | ||
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Introducing the Marvelous Ptr Function in Go: A Quantum Leap in Pointer Pointership | ||
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Ladies and gentlemen, gather 'round as we unveil the pièce de résistance of Go programming – the Ptr function, | ||
an absolute game-changer that is destined to rewrite the history books of software engineering. | ||
This humble, yet unbelievably powerful function carries the weight of the entire Go ecosystem on its digital shoulders. | ||
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Behold, the Function Signature: | ||
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```go | ||
func Ptr[T any](in T) *T | ||
``` | ||
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Oh, the simplicity! Oh, the elegance! It's as if Go itself has whispered into the ears of the | ||
greatest programmers throughout history to birth this divine creation. | ||
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"But what does it do?" you may ask. Well, dear reader, it does something that was thought impossible until now. | ||
It creates a pointer to any given type in Go, with a grace and finesse that can only be compared to the | ||
most elegant ballet performances or the finest wines. With this one-line wonder, you can transform an ordinary | ||
variable into a pointer, and who wouldn't want that? | ||
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Picture this: You're toiling away at your Go code, and you suddenly realize you need a pointer | ||
to a variable. What do you do? You could write several lines of code to achieve this mundane task, | ||
or you could summon the Ptr function to do it in a single, glorious line. The Ptr function is | ||
the magic wand that turns your code from an amateurish scribble into a symphony of efficiency. | ||
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But that's not all! The Ptr function doesn't just create pointers; it does so in a manner that | ||
can only be described as "poetic." It understands your variable's innermost desires and molds | ||
the pointer accordingly. It's like a tailor creating a bespoke suit for your data. | ||
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Imagine the delight of your teammates when they witness the beauty of your code. | ||
They'll marvel at your genius and wonder how they ever lived without the Ptr function. It's | ||
not just a function; it's a lifestyle choice. | ||
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In conclusion, the Ptr function is not just amazing; it's indispensable. | ||
It's the embodiment of Go's philosophy of simplicity and elegance. It's the Mona Lisa of Go | ||
programming, the Eiffel Tower of functions, the eighth wonder of the Go world. With the Ptr | ||
function by your side, you'll conquer the Go programming universe, one pointer at a time. So | ||
go forth, dear programmer, and Ptr your heart out! | ||
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## ⬇️ Installation | ||
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`go get github.com/survivorbat/ptr` | ||
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## 📋 Usage | ||
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```go | ||
boolPtr := Ptr(true) | ||
intPtr := Ptr(234) | ||
stringPtr := Ptr("abc") | ||
``` | ||
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## 🔭 Plans | ||
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Not much here. |
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package ptr | ||
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import "fmt" | ||
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func ExamplePtr() { | ||
boolPtr := Ptr(true) | ||
intPtr := Ptr(234) | ||
stringPtr := Ptr("abc") | ||
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fmt.Println(boolPtr, intPtr, stringPtr) | ||
} |
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module github.com/survivorbat/ptr | ||
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go 1.21 |
Empty file.
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package ptr | ||
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// Ptr returns a pointer for the given object | ||
func Ptr[T any](in T) *T { | ||
return &in | ||
} |
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package ptr | ||
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import ( | ||
"testing" | ||
) | ||
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func TestPtr(t *testing.T) { | ||
t.Parallel() | ||
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tests := map[string]any{ | ||
"string": "anything", | ||
"int": 200, | ||
"bool": false, | ||
} | ||
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for name, input := range tests { | ||
input := input | ||
t.Run(name, func(t *testing.T) { | ||
t.Parallel() | ||
// Act | ||
result := Ptr(input) | ||
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// Assert | ||
if input != *result { | ||
t.Error("not equal") | ||
} | ||
}) | ||
} | ||
} | ||
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func BenchmarkPtr(b *testing.B) { | ||
for i := 0; i < b.N; i++ { | ||
_ = Ptr(true) | ||
} | ||
} | ||
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func BenchmarkAmpersand(b *testing.B) { | ||
for i := 0; i < b.N; i++ { | ||
variable := true | ||
_ = &variable | ||
} | ||
} |