fix: ✏️ typos and compiler warnings
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82c2fb8883
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528969944d
17 changed files with 578 additions and 632 deletions
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@ -1,42 +1,38 @@
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fn main()
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{
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println!("Hello, world!");
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//mutable because we will clean it later.
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let mut s = String::from("Yellow Duck");
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//it's not &String, it's literal reference thanks to slice
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let firts = firts_world(&s[..]);
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println!("{}", firts);
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s.clear();
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//s.clear function has mutable reference to truncate
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//and if we print "first" after this
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//we have to have mutable and immutable references
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//at the same time
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//it's forbidden as we've learned before
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//println!("{}", firts);
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fn main() {
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println!("Hello, world!");
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let a = [0,1,2,3,4,5];
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let b = &a[2..4];
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println!("{}-{}", b[0], b[1]);
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}
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fn firts_world(s: &str) -> &str
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{
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//it converts string to byte array
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let bytes = s.as_bytes();
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//iter is iteration we will learn later, even i don't know well
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//enumerate returns index and reference in order as a tuple
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for(i, &item) in bytes.iter().enumerate()
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{
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//We're trying to catch "space" to sepeterate our string
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//Book says also we will learn pattern matching later
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if item == b' '
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{
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//when we find "space", we return first slice
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return &s[0..i];
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}
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}
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//If we can not find any space, we return whole string as a literal
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&s[..]
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//mutable because we will clean it later.
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let mut s = String::from("Yellow Duck");
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//it's not &String, it's literal reference thanks to slice
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let first = first_world(&s[..]);
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println!("{}", first);
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s.clear();
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//s.clear function has mutable reference to truncate
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//and if we print "first" after this
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//we have to have mutable and immutable references
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//at the same time
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//it's forbidden as we've learned before
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//println!("{}", first);
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let a = [0, 1, 2, 3, 4, 5];
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let b = &a[2..4];
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println!("{}-{}", b[0], b[1]);
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}
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fn first_world(s: &str) -> &str {
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//it converts string to byte array
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let bytes = s.as_bytes();
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//iter is iteration we will learn later, even i don't know well
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//enumerate returns index and reference in order as a tuple
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for (i, &item) in bytes.iter().enumerate() {
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//We're trying to catch "space" to separate our string
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//Book says also we will learn pattern matching later
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if item == b' ' {
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//when we find "space", we return first slice
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return &s[0..i];
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}
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}
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//If we can not find any space, we return whole string as a literal
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&s[..]
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}
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