iskm/learnxinyminutes-docs
1
0
Fork 0
mirror of https://github.com/adambard/learnxinyminutes-docs.git synced 2024-12-23 17:41:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Mention meaning of asterisk. Explain *ref_var2

Browse Source 
Issue #1398
This commit is contained in:
Pushkar Sharma 2015-10-11 09:39:39 +05:30
parent 8592f26199
commit 2b8fe51af6
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
rust.html.markdown
View File

@ -287,9 +287,9 @@ fn main() {
// While a value is mutably borrowed, it cannot be accessed at all. // While a value is mutably borrowed, it cannot be accessed at all.
let mut var2 = 4; let mut var2 = 4;
let ref_var2: &mut i32 = &mut var2; let ref_var2: &mut i32 = &mut var2;
*ref_var2 += 2; *ref_var2 += 2; // '*' is used to point to the mutably borrowed var2
println!("{}", *ref_var2); // 6 println!("{}", *ref_var2); // 6 , //var2 would not compile. //ref_var2 is of type &mut i32, so //stores a reference to an i32 not the value.
// var2 = 2; // this would not compile because `var2` is borrowed // var2 = 2; // this would not compile because `var2` is borrowed
} }
``` ```