From 22675cd8dc75d8b8d4b0f818f5b093efbc364802 Mon Sep 17 00:00:00 2001 From: Jasper Ras Date: Fri, 8 Aug 2025 22:44:15 +0200 Subject: vault backup: 2025-08-08 22:44:15 --- To put data on the heap use a Box.md | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 To put data on the heap use a Box.md (limited to 'To put data on the heap use a Box.md') diff --git a/To put data on the heap use a Box.md b/To put data on the heap use a Box.md new file mode 100644 index 0000000..442adca --- /dev/null +++ b/To put data on the heap use a Box.md @@ -0,0 +1,15 @@ +[[Rust]] +[[Variables lives on the stack]] +[[When heap data is deallocated]] +[[Ownership]] + +--- + +The heap is where data can live indefinitely and we can create pointers to it on the stack using a Box. + +```rust +let a = Box::new([0; 1_000_000]); +let b = a; +``` + +Creates an array with 1 million entries on the heap and two variables on the stack that are a *pointer* to that heap data. \ No newline at end of file -- cgit v1.2.3