38 lines
1.4 KiB
Plaintext
38 lines
1.4 KiB
Plaintext
Scalar types:
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- A scalar type represents a single value.
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- Integers:
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- unsigned: (u8, u16, u32, u64, u128, usize)
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- signed: (i8, i16, i32, i64, i128, isize)
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- defaults to u32
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- usize/isize change automatically depending on CPU architecture
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- Floating point:
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- f32, f64
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- defaults to f64
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- Booleans:
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- true/false
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- Char:
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- Defined with '' as opposed to "" (which are used for strings)
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- Can store unicode characters
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Compound types:
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- Compound types can group multiple values into one type.
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Rust has two primitive compound types: tuples and arrays.
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- Tuple:
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- A tuple is a general way of grouping together a number of values with a variety of types into
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one compound type. Tuples have a fixed length: once declared, they cannot grow or shrink in size.
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- We create a tuple by writing a comma-separated list of values inside parentheses.
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Each position in the tuple has a type, and the types of the different values in the tuple don’t
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have to be the same.
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okay i cant be bothered typing more: https://doc.rust-lang.org/stable/book/ch03-02-data-types.html
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- Arrays:
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- defined with square brackets []
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- all elements must be of the same type
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- fixed length
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- Arrays are defined like so:
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- let a: [i32; 5] = [1, 2, 3, 4, 5];
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- the first square brackets contain the type and the length
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- Array elements are fetched by using the index of the object a[0] = 1, a[1] = 2, etc
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