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发表于 2025-12-10 12:55
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Here is a clean, professional Rust code review with specific, actionable comments and an improved version of your function.
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✅ Code Review & Comments
1. ensure!(!text.is_empty()) is OK, but error message context could be richer
Right now your error is always ApplicationError: arameterWrong, but the caller won’t know what is wrong.
Consider adding context or using change_context for better debugging.
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2. You rebind text but don’t need to
let text = text.trim(); is fine, but using a different variable name avoids shadowing and improves readability.
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3. .trim() only trims ends, not interior whitespace
Your code keeps internal newline structure, which is good.
But be aware that empty lines inside text are removed by .filter(|item| !item.is_empty()).
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4. collect::<Vec<String>>() inside Ok() is verbose
You can let type inference handle it.
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5. Efficiency: map(trim).filter(not empty) is clean but could be combined
Rust allocates a new String for every line; unavoidable, but good.
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6. Consider returning Vec<&str> if you don't need owned strings
If the caller does not need ownership, returning borrowed &str is faster.
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⭐ Suggested Improved Version
✔ More readable
✔ Better error context
✔ No shadowing
✔ Cleaner iterator chain
use crate::ApplicationError;
use error_stack::{Report, ensure, ResultExt};
pub fn get_vec_string(text: &str) -> Result<Vec<String>, Report<ApplicationError>> {
let trimmed = text.trim();
ensure!(!trimmed.is_empty(), ApplicationError:arameterWrong)
.change_context(ApplicationError:arameterWrong)
.attach_printable("Input text cannot be empty.");
Ok(trimmed
.lines()
.map(|item| item.trim())
.filter(|item| !item.is_empty())
.map(String::from)
.collect())
}
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⭐ Optional: Zero-allocation version (if ownership not required)
pub fn get_vec_str<'a>(text: &'a str) -> Result<Vec<&'a str>, Report<ApplicationError>> {
let trimmed = text.trim();
ensure!(!trimmed.is_empty(), ApplicationError:arameterWrong);
Ok(trimmed
.lines()
.map(|item| item.trim())
.filter(|item| !item.is_empty())
.collect())
}
This avoids allocating new String objects and is more efficient.
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???? Summary of Improvements
Added richer error context for debugging.
Avoided unnecessary variable shadowing.
Improved readability and iterator clarity.
Suggested performance optimization if ownership is not needed. |
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写在妈妈的生日。 (2008-12-1) chinara 
发表于 2025-12-10 12:08
