reading env var

Cargo.toml

@@ -3,6 +3,5 @@ name = "stark_whale_alert"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
+dotenv = "0.15.0"

src/main.rs

@@ -1,3 +1,9 @@
+use dotenv::dotenv;
+
 fn main() {
-    println!("Hello, world!");
+    dotenv().ok();
+    let mailcoach_api_token = std::env::var("COINCAP_API_KEY").expect("COINCAP_API_KEY must be set.");
+
+
+    println!("Somethng {mailcoach_api_token}");
 }