bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Rollup merge of #34094 - abenga:doc_changes_variable_bindings, r=steveklabnik

Browse source 
Minor changes to variable bindings chapter

* In "*... name as another binding, that's currently in scope, will ...*", *"
  that's currently in scope"* is not a parenthetical element, and the commas
  can be omitted.

* Other minor changes.
This commit is contained in:
Steve Klabnik 2016-06-07 10:43:57 -04:00
commit 31ddf966f5
1 changed files with 7 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

13
src/doc/book/variable-bindings.md
View file

@ -37,8 +37,8 @@ of our minds as we go forward.
Rust is a statically typed language, which means that we specify our types up Rust is a statically typed language, which means that we specify our types up
front, and they’re checked at compile time. So why does our first example front, and they’re checked at compile time. So why does our first example
compile? Well, Rust has this thing called ‘type inference’. If it can figure compile? Well, Rust has this thing called ‘type inference’. If it can figure
out what the type of something is, Rust doesn’t require you to actually type it out what the type of something is, Rust doesn’t require you to explicitly type
out. it out.
We can add the type if we want to, though. Types come after a colon (`:`): We can add the type if we want to, though. Types come after a colon (`:`):
@ -159,8 +159,9 @@ error: aborting due to previous error
Could not compile `hello_world`. Could not compile `hello_world`.
``` ```
Rust will not let us use a value that has not been initialized. Next, let’s Rust will not let us use a value that has not been initialized.
talk about this stuff we've added to `println!`.
Let take a minute to talk about this stuff we've added to `println!`.
If you include two curly braces (`{}`, some call them moustaches...) in your If you include two curly braces (`{}`, some call them moustaches...) in your
string to print, Rust will interpret this as a request to interpolate some sort string to print, Rust will interpret this as a request to interpolate some sort
@ -222,8 +223,8 @@ To learn more, run the command again with --verbose.
``` ```
Additionally, variable bindings can be shadowed. This means that a later Additionally, variable bindings can be shadowed. This means that a later
variable binding with the same name as another binding, that's currently in variable binding with the same name as another binding that is currently in
scope, will override the previous binding. scope will override the previous binding.
```rust ```rust
let x: i32 = 8; let x: i32 = 8;