Implement iterator related methods such as zip, enumerate, nth, map, collect ... #5571
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lib: std
Standard library
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esdrubal
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Feb 8, 2024
## Description
This implements an Iterator trait in std-lib, and adds iter() to Vec.
This also adds parsing and desugaring of for loops.
```
for pattern in iterator {
code_block
}
```
is desugared into:
```
let mut iterable = iterator;
while true {
let value_opt = iterable.next();
if value_opt.is_none() {
break;
}
let value = value_opt.unwrap();
code_block
}
```
This also adds for loops documentation to the control flow docs.
We still have to fix this issues:
- #5567
- #5568
- #5570
- #5571
Closes #145
## Checklist
- [x] I have linked to any relevant issues.
- [x] I have commented my code, particularly in hard-to-understand
areas.
- [x] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [x] I have requested a review from the relevant team or maintainers.
sdankel
pushed a commit
that referenced
this issue
Feb 8, 2024
## Description
This implements an Iterator trait in std-lib, and adds iter() to Vec.
This also adds parsing and desugaring of for loops.
```
for pattern in iterator {
code_block
}
```
is desugared into:
```
let mut iterable = iterator;
while true {
let value_opt = iterable.next();
if value_opt.is_none() {
break;
}
let value = value_opt.unwrap();
code_block
}
```
This also adds for loops documentation to the control flow docs.
We still have to fix this issues:
- #5567
- #5568
- #5570
- #5571
Closes #145
## Checklist
- [x] I have linked to any relevant issues.
- [x] I have commented my code, particularly in hard-to-understand
areas.
- [x] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [x] I have requested a review from the relevant team or maintainers.
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Implement the following iterator methods:
Methods requiring closures:
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