doc: small char improvements
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@ -77,7 +77,7 @@ mod prim_bool { }
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/// # Representation
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///
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/// `char` is always four bytes in size. This is a different representation than
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/// a given character would have as part of a [`String`], for example:
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/// a given character would have as part of a [`String`]. For example:
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///
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/// ```
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/// let v = vec!['h', 'e', 'l', 'l', 'o'];
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@ -116,8 +116,8 @@ mod prim_bool { }
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/// ^~
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/// ```
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///
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/// Another implication of the 4-byte fixed size of a `char`, is that
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/// per-`char`acter processing can end up using a lot more memory:
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/// Another implication of the 4-byte fixed size of a `char` is that
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/// per-`char` processing can end up using a lot more memory:
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///
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/// ```
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/// let s = String::from("love: ❤️");
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