just language preview

1. Build and test recipes

recipe dependencies, variables, and default parameters

horizon-dark

# variables
target := env_var_or_default("TARGET", "release")

build target=target:
	cargo build --{{target}}

# run tests after building
test: build
	cargo test

# a function call as an inline parameter default
serve port=env_var_or_default("PORT", "8080"):
	python3 -m http.server {{port}}

atom-one-dark

# variables
target := env_var_or_default("TARGET", "release")

build target=target:
	cargo build --{{target}}

# run tests after building
test: build
	cargo test

# a function call as an inline parameter default
serve port=env_var_or_default("PORT", "8080"):
	python3 -m http.server {{port}}

github-dark

# variables
target := env_var_or_default("TARGET", "release")

build target=target:
	cargo build --{{target}}

# run tests after building
test: build
	cargo test

# a function call as an inline parameter default
serve port=env_var_or_default("PORT", "8080"):
	python3 -m http.server {{port}}

dracula

# variables
target := env_var_or_default("TARGET", "release")

build target=target:
	cargo build --{{target}}

# run tests after building
test: build
	cargo test

# a function call as an inline parameter default
serve port=env_var_or_default("PORT", "8080"):
	python3 -m http.server {{port}}

nord

# variables
target := env_var_or_default("TARGET", "release")

build target=target:
	cargo build --{{target}}

# run tests after building
test: build
	cargo test

# a function call as an inline parameter default
serve port=env_var_or_default("PORT", "8080"):
	python3 -m http.server {{port}}

github

# variables
target := env_var_or_default("TARGET", "release")

build target=target:
	cargo build --{{target}}

# run tests after building
test: build
	cargo test

# a function call as an inline parameter default
serve port=env_var_or_default("PORT", "8080"):
	python3 -m http.server {{port}}

2. Interpolation and attributes

string interpolation, attributes, and shebang recipes

horizon-dark

[private]
[confirm]
deploy env="staging":
	echo "deploying to {{env}}"

[no-cd]
python-script:
	#!/usr/bin/env python3
	print("hello from just")

atom-one-dark

[private]
[confirm]
deploy env="staging":
	echo "deploying to {{env}}"

[no-cd]
python-script:
	#!/usr/bin/env python3
	print("hello from just")

github-dark

[private]
[confirm]
deploy env="staging":
	echo "deploying to {{env}}"

[no-cd]
python-script:
	#!/usr/bin/env python3
	print("hello from just")

dracula

[private]
[confirm]
deploy env="staging":
	echo "deploying to {{env}}"

[no-cd]
python-script:
	#!/usr/bin/env python3
	print("hello from just")

nord

[private]
[confirm]
deploy env="staging":
	echo "deploying to {{env}}"

[no-cd]
python-script:
	#!/usr/bin/env python3
	print("hello from just")

github

[private]
[confirm]
deploy env="staging":
	echo "deploying to {{env}}"

[no-cd]
python-script:
	#!/usr/bin/env python3
	print("hello from just")

3. Modules, imports, and aliases

export, set, import, mod, and alias keywords

horizon-dark

export DATABASE_URL := "postgres://localhost/dev"

set shell := ["bash", "-cu"]

import "shared.just"
mod docker

alias b := build

build:
	cargo build

atom-one-dark

export DATABASE_URL := "postgres://localhost/dev"

set shell := ["bash", "-cu"]

import "shared.just"
mod docker

alias b := build

build:
	cargo build

github-dark

export DATABASE_URL := "postgres://localhost/dev"

set shell := ["bash", "-cu"]

import "shared.just"
mod docker

alias b := build

build:
	cargo build

dracula

export DATABASE_URL := "postgres://localhost/dev"

set shell := ["bash", "-cu"]

import "shared.just"
mod docker

alias b := build

build:
	cargo build

nord

export DATABASE_URL := "postgres://localhost/dev"

set shell := ["bash", "-cu"]

import "shared.just"
mod docker

alias b := build

build:
	cargo build

github

export DATABASE_URL := "postgres://localhost/dev"

set shell := ["bash", "-cu"]

import "shared.just"
mod docker

alias b := build

build:
	cargo build