basic

.gitignore

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+/target
+Cargo.lock

Cargo.toml

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+[package]
+name = "tuples"
+version = "0.1.0"
+authors = ["BatchOperator", "2A5F <[email protected]>"]
+edition = "2018"
+license = "MIT"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+[features]
+default = ["std", "tuple_combin", "tuple_iter", "tuple_map", "re-exports"]
+re-exports = []
+std = []
+tuple_iter = []
+tuple_map = []
+tuple_combin = []
+
+[build-dependencies]
+syn = "1.0"
+quote = "1.0"
+proc-macro2 = "1.0"

build.rs

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+use std::env;
+
+mod code_gen;
+use code_gen::*;
+
+fn main() {
+    let out_dir = env::var_os("OUT_DIR").unwrap();
+
+    code_gen(out_dir);
+
+    println!("cargo:rerun-if-changed=build.rs");
+}