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ci: fix long lines/links in docs.md

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Delyan Angelov 2022-06-23 20:09:20 +03:00
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@ -2278,22 +2278,23 @@ Note that the embedded struct arguments are not necessarily stored in the order
## Functions 2 ## Functions 2
### Immutable function args by default, mutable args have to be marked on call ### Immutable function args by default
In V function args are immutable by default, mutable args have to be marked on call. In V function arguments are immutable by default.
Since there are also no globals, that means that functions' return values are a function of their
arguments only, and their evaluation has no side effects (unless the function uses I/O).
Function arguments are immutable by default even when [references](#references) are passed. Since there are also no globals, that means that the return values of the functions,
are a function of their arguments only, and their evaluation has no side effects
(unless the function uses I/O).
V is not a purely functional language however. Function arguments are immutable by default, even when [references](#references) are passed.
Note that V is not a purely functional language however.
There is a compiler flag to enable global variables (`-enable-globals`), but this is There is a compiler flag to enable global variables (`-enable-globals`), but this is
intended for low-level applications like kernels and drivers. intended for low-level applications like kernels and drivers.
### Mutable arguments ### Mutable arguments
It is possible to modify function arguments by declaring them with the keyword `mut`:
It is possible to modify function arguments by using the keyword `mut`:
```v ```v
struct User { struct User {
@ -2312,7 +2313,7 @@ user.register()
println(user.is_registered) // "true" println(user.is_registered) // "true"
``` ```
In this example, the receiver (which is simply the first argument) is marked as mutable, In this example, the receiver (which is just the first argument) is explicitly marked as mutable,
so `register()` can change the user object. The same works with non-receiver arguments: so `register()` can change the user object. The same works with non-receiver arguments:
```v ```v
@ -3600,8 +3601,8 @@ println(compare(1.1, 1.2)) // -1
## Concurrency ## Concurrency
### Spawning Concurrent Tasks ### Spawning Concurrent Tasks
V's model of concurrency is going to be very similar to Go's. For now, `go foo()` runs `foo()` concurrently in V's model of concurrency is going to be very similar to Go's.
a different thread: For now, `go foo()` runs `foo()` concurrently in a different thread:
```v ```v
import math import math
@ -3617,8 +3618,8 @@ fn main() {
} }
``` ```
> In V 0.4 `go foo()` will be automatically renamed via vfmt to `spawn foo()`, and there will be a way to launch > In V 0.4 `go foo()` will be automatically renamed via vfmt to `spawn foo()`,
a coroutine (a lightweight thread managed by the runtime). and there will be a way to launch a coroutine (a lightweight thread managed by the runtime).
Sometimes it is necessary to wait until a parallel thread has finished. This can Sometimes it is necessary to wait until a parallel thread has finished. This can
be done by assigning a *handle* to the started thread and calling the `wait()` method be done by assigning a *handle* to the started thread and calling the `wait()` method