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9 min readTo cleanly implement "waterfall" logic in Rust, you can use match statements and Result types to handle the flow of control through a series of operations. The basic idea is to chain together a series of function calls, where each function takes the output of the previous function as input.You can use Result types to propagate errors through the chain of function calls, and use match statements to handle each possible outcome.
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6 min readIn Rust, "autoref" is a term used to refer to the automatic referencing and dereferencing behavior that occurs when working with references in the language. When a method or function takes a reference as an argument, Rust will automatically coerce a value to a reference. This can simplify code and make it easier to work with references without needing to explicitly add or remove reference symbols. Autoref allows for more concise and readable code when working with references in Rust.
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3 min readIn Rust, "r#" is a special prefix that allows you to use reserved keywords as identifiers. This can be useful when you want to use a word as a variable or function name that is already reserved in the language. By adding "r#" before the keyword, you can avoid conflicts and still use the reserved word as an identifier in your code. This feature is especially handy when working with libraries or APIs that have naming conventions that clash with Rust's keywords.
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3 min readIn Rust, buffers can be manipulated using a variety of methods provided by the standard library. Buffers can be created using the Vec type, which allows for dynamic resizing and efficient manipulation of data. The slice method can be used to create a view into the buffer, allowing for manipulation of specific portions of the data. Additionally, the read and write methods can be used to read from and write to buffers, respectively, allowing for efficient data manipulation.
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5 min readTo load an irregular CSV file using Rust, you can use the csv crate to read and parse the file. First, you will need to add the csv crate to your Cargo.toml file: [dependencies] csv = "1.1" Next, you can use the following code to read and parse the CSV file: use std::error::Error; use std::fs::File; use std::io::prelude::*; use std::path::Path; use csv::ReaderBuilder; fn main() -> Result<(), Box<dyn Error>> { let path = Path::new("your_file.
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5 min readUsing smaller integer types in Rust can have several advantages. One major advantage is that smaller integer types like u8, u16, i8, and i16 take up less memory compared to larger integer types like u32 and u64. This can be particularly beneficial when working with large collections of integers or when memory constraints are a concern.
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4 min readWorking with vectors of strings in Rust is very similar to working with vectors of any other type. You can create a new vector of strings using the vec! macro or by using the Vec::new() constructor. Strings in Rust are represented as String objects, which are heap-allocated and mutable.To add a string to a vector, you can use the push method on the vector, like so: vec.push("some string".to_string()).
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5 min readTo convert a range to a slice in Rust, you can use the slice method provided by the standard library. This method takes the starting and ending index of the range as arguments and returns a slice that represents the elements within that range. For example, if you have a vector v and a range range, you can convert the range to a slice by calling v.slice(range.start, range.end). The resulting slice will include elements from range.start up to (but not including) range.end.
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5 min readIn Rust, a statically sized array can be created by specifying the type and size of the array using square brackets. For example, to create a statically sized array of integers with a size of 5, you can write: let arr: [i32; 5] = [1, 2, 3, 4, 5]; This declares an array named arr that can hold 5 integers of type i32. The values [1, 2, 3, 4, 5] are assigned to the array at declaration. The size of the array cannot be changed once it is defined.
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2 min readTo get column names in an Oracle SELECT statement, you can use the DESCRIBE command followed by the table name. This will display the column names, data types, and sizes of the columns in the table. Another way is to query the data dictionary views such as ALL_TAB_COLUMNS or USER_TAB_COLUMNS to retrieve information about the columns in a table. You can also use the SQL Developer tool to easily view the columns in a table by clicking on the table name and then selecting the Columns tab.
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5 min readTo copy a hyper::Request in Rust, you can simply clone the request using the .clone() method. This will create a deep copy of the request, including all headers, body and other properties. You can then use the cloned request for any further processing or modifications without affecting the original request.Here is an example of how to copy a hyper::Request: use hyper::Request; fn main() { // Create a new request let request = Request::builder() .uri("http://example.