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``` Benchmark_ParseFloat/fiber-12 100000000 11.18 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/fiber-12 100000000 10.98 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/fiber_bytes-12 100000000 11.30 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/fiber_bytes-12 100000000 11.33 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/default-12 49387119 24.56 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/default-12 50058313 24.14 ns/op 0 B/op 0 allocs/op ```
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WalkthroughA new Changes
Sequence Diagram(s)sequenceDiagram
participant Caller
participant ParseFloat
participant math.Pow10
Caller->>ParseFloat: ParseFloat(input)
ParseFloat->>ParseFloat: Parse sign, integer, fraction, exponent
ParseFloat->>math.Pow10: Compute exponent
ParseFloat->>ParseFloat: Combine parts, check for errors
ParseFloat-->>Caller: Return (float64, success)
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Summary of Changes
Hello @ReneWerner87, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request introduces a new ParseFloat utility function to the codebase, designed for efficient parsing of floating-point numbers from string or byte slice inputs. The change includes the core implementation of this function, along with comprehensive unit tests to validate its behavior and performance benchmarks to compare its speed against the standard library's equivalent. The README.md has also been updated to reflect these new benchmark results.
Highlights
- New Utility Function: Introduced
ParseFloat, a new utility function capable of parsing decimal ASCII strings or byte slices intofloat64values. This function supports optional signs, fractional parts, and exponents, and includes robust error and overflow handling. - Comprehensive Testing: Added dedicated unit tests (
Test_ParseFloat) to ensure the correctness and robustness of the newParseFloatfunction across various valid and invalid inputs, including edge cases like empty strings, invalid characters, and large exponents. - Performance Benchmarking: Included performance benchmarks (
Benchmark_ParseFloat) to measure the efficiency of the newParseFloatimplementation. These benchmarks compare its performance when parsing from strings and byte slices against the standard library'sstrconv.ParseFloat. - Documentation Update: Updated the
README.mdfile to include the benchmark results for the newly addedParseFloatfunction, providing immediate performance insights for users.
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #134 +/- ##
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+ Coverage 96.01% 96.68% +0.66%
==========================================
Files 10 10
Lines 603 723 +120
==========================================
+ Hits 579 699 +120
Misses 16 16
Partials 8 8
Flags with carried forward coverage won't be shown. Click here to find out more. ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Code Review
This pull request introduces a new, high-performance ParseFloat function. The implementation is a great start, and the benchmarks are impressive. My review provides feedback to improve correctness and robustness by addressing several edge cases, such as handling trailing decimal points and preventing silent precision loss. I've also suggested expanding the test suite to ensure the function is reliable across a wider variety of inputs.
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Actionable comments posted: 1
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Review profile: CHILL
Plan: Pro
📒 Files selected for processing (3)
README.md(1 hunks)parse.go(1 hunks)parse_test.go(1 hunks)
🧰 Additional context used
🧠 Learnings (3)
📓 Common learnings
Learnt from: ReneWerner87
PR: gofiber/fiber#2864
File: ctx_test.go:4816-4816
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The `ParamsInt` function's behavior, including handling empty string parameters, will be addressed in future PRs as per ReneWerner87's guidance.
Learnt from: ReneWerner87
PR: gofiber/fiber#2864
File: ctx_test.go:4816-4816
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The `ParamsInt` function's behavior, including handling empty string parameters, will be addressed in future PRs as per ReneWerner87's guidance.
Learnt from: ReneWerner87
PR: gofiber/fiber#0
File: :0-0
Timestamp: 2024-12-01T10:28:36.011Z
Learning: Feature request #3224 has been created to add support for square bracket notation and comma-separated values in multipart form data in Fiber, while maintaining binary data transfer capabilities. This would bring parity with the existing form-urlencoded functionality.
README.md (7)
Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.
Learnt from: ReneWerner87
PR: gofiber/recipes#0
File: :0-0
Timestamp: 2024-11-26T20:05:15.793Z
Learning: For future contributions to the `gofiber/recipes` repository, ensure that the tasks outlined in `.github/CONTRIBUTING.md` are incorporated, including creating a new directory without a "fiber" prefix, adding a `README.md` with Docusaurus metadata, and updating the overview by running `make generate`.
Learnt from: juls0730
PR: gofiber/recipes#2710
File: tableflip/main.go:61-62
Timestamp: 2024-12-01T01:15:48.126Z
Learning: In the GoFiber `tableflip` recipe (`tableflip/main.go`), the implementation matches the upstream reference implementation. Future code suggestions should consider maintaining this alignment to ensure consistency.
Learnt from: norri
PR: gofiber/recipes#2701
File: clean-code/app/server/server.go:14-16
Timestamp: 2024-11-23T19:50:41.765Z
Learning: In the `clean-code` example at `clean-code/app/server/server.go` using the Go Fiber framework, it's acceptable to omit production-level features like context usage and graceful shutdown handling to keep the example simple.
Learnt from: ReneWerner87
PR: gofiber/storage#0
File: :0-0
Timestamp: 2025-02-12T11:24:31.153Z
Learning: The storage package in gofiber/storage repository can be used independently of the Fiber web framework.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.
parse_test.go (5)
Learnt from: efectn
PR: gofiber/fiber#3162
File: hooks_test.go:228-228
Timestamp: 2024-12-13T08:14:22.851Z
Learning: In Go test files, prefer using the `require` methods from the `testify` package for assertions instead of manual comparisons and calls to `t.Fatal` or `t.Fatalf`.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-02T23:03:31.727Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests in this project use testify require.
🧬 Code Graph Analysis (1)
parse_test.go (1)
parse.go (1)
ParseFloat(128-230)
🪛 GitHub Check: lint
parse_test.go
[failure] 424-424:
float-compare: use require.InEpsilon (or InDelta) (testifylint)
[failure] 415-415:
float-compare: use require.InEpsilon (or InDelta) (testifylint)
🪛 GitHub Actions: golangci-lint
parse_test.go
[error] 415-415: golangci-lint: float-compare: use require.InEpsilon (or InDelta) (testifylint)
🪛 GitHub Check: codecov/patch
parse.go
[warning] 138-139: parse.go#L138-L139
Added lines #L138 - L139 were not covered by tests
[warning] 142-143: parse.go#L142-L143
Added lines #L142 - L143 were not covered by tests
[warning] 153-154: parse.go#L153-L154
Added lines #L153 - L154 were not covered by tests
[warning] 164-165: parse.go#L164-L165
Added lines #L164 - L165 were not covered by tests
[warning] 184-185: parse.go#L184-L185
Added lines #L184 - L185 were not covered by tests
[warning] 187-191: parse.go#L187-L191
Added lines #L187 - L191 were not covered by tests
[warning] 194-195: parse.go#L194-L195
Added lines #L194 - L195 were not covered by tests
[warning] 199-200: parse.go#L199-L200
Added lines #L199 - L200 were not covered by tests
[warning] 213-214: parse.go#L213-L214
Added lines #L213 - L214 were not covered by tests
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: Compare
🔇 Additional comments (3)
parse.go (1)
126-230: Good implementation with performance focus, but needs comprehensive test coverage.The
ParseFloatimplementation is well-structured and handles various float formats correctly. However, static analysis indicates several edge cases are not covered by tests:
- Positive sign handling (
"+123.45")- Sign-only inputs (
"+","-")- Integer overflow scenarios
- Decimal point at end (
"123.")- Exponent without digits (
"123e","123e+","123e-")- Invalid characters in exponent (
"123e1a")I recommend adding test cases for these scenarios to ensure robustness:
// Additional test cases for Test_ParseFloat {"123.", 0, false}, // decimal point at end {"+123.45", 123.45, true}, // positive sign {"+", 0, false}, // sign only {"123e", 0, false}, // exponent without digits {"123e+", 0, false}, // exponent with sign only {"123e-", 0, false}, // exponent with negative sign only {"123e1a", 0, false}, // invalid exponent {"1e-400", 0, true}, // underflow to zero {"9999999999999999999", 0, false}, // integer overflowREADME.md (1)
138-185: LGTM! Benchmark results clearly demonstrate the performance improvement.The documentation accurately captures the ~2x performance gain of the new
ParseFloatimplementation compared tostrconv.ParseFloat.parse_test.go (1)
432-462: Well-structured benchmark implementation.The benchmark effectively demonstrates the performance improvement of the new
ParseFloatimplementation compared tostrconv.ParseFloat.
``` Benchmark_ParseFloat/fiber-12 100000000 11.18 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/fiber-12 100000000 10.98 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/fiber_bytes-12 100000000 11.30 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/fiber_bytes-12 100000000 11.33 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/default-12 49387119 24.56 ns/op 0 B/op 0 allocs/op Benchmark_ParseFloat/default-12 50058313 24.14 ns/op 0 B/op 0 allocs/op ```
There was a problem hiding this comment.
Actionable comments posted: 0
♻️ Duplicate comments (2)
parse_test.go (2)
420-424: Fix inconsistent float comparison for zero values.The special handling for zero values using
require.Equalis unnecessary and causes linter failures.require.InEpsilonworks correctly for zero values and should be used consistently for all float comparisons.Apply this diff to fix the issue:
- if ok { - if tt.val == 0 { - require.Equal(t, tt.val, v) - } else { - require.InEpsilon(t, tt.val, v, 1e-9) - } - } + if ok { + require.InEpsilon(t, tt.val, v, 1e-9) + }
429-433: Fix inconsistent float comparison for zero values in byte slice tests.Same issue as the string tests - use
require.InEpsilonconsistently for all float comparisons.Apply this diff to fix the issue:
- if ok { - if tt.val == 0 { - require.Equal(t, tt.val, bts) - } else { - require.InEpsilon(t, tt.val, bts, 1e-9) - } - } + if ok { + require.InEpsilon(t, tt.val, bts, 1e-9) + }
🧹 Nitpick comments (1)
parse_test.go (1)
406-415: Good coverage of edge cases, but consider adding more comprehensive test cases.The test cases cover important edge cases like trailing decimals (
"1."), leading decimals (".5"), and various invalid inputs. However, based on the ParseFloat implementation, consider adding a few more edge cases to improve robustness:Consider adding these additional test cases:
{"1e309", 0, false}, {"", 0, false}, {"abc", 0, false}, + {"+123.45", 123.45, true}, + {"+", 0, false}, + {"-", 0, false}, + {"123e", 0, false}, + {"123e+", 0, false}, + {"123e-", 0, false}, + {"123e1a", 0, false}, + {"1e-400", 0, true},
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (2)
parse.go(1 hunks)parse_test.go(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- parse.go
🧰 Additional context used
🧠 Learnings (2)
📓 Common learnings
Learnt from: ReneWerner87
PR: gofiber/fiber#2864
File: ctx_test.go:4816-4816
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The `ParamsInt` function's behavior, including handling empty string parameters, will be addressed in future PRs as per ReneWerner87's guidance.
Learnt from: ReneWerner87
PR: gofiber/fiber#2864
File: ctx_test.go:4816-4816
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The `ParamsInt` function's behavior, including handling empty string parameters, will be addressed in future PRs as per ReneWerner87's guidance.
Learnt from: ReneWerner87
PR: gofiber/fiber#0
File: :0-0
Timestamp: 2024-12-01T10:28:36.011Z
Learning: Feature request #3224 has been created to add support for square bracket notation and comma-separated values in multipart form data in Fiber, while maintaining binary data transfer capabilities. This would bring parity with the existing form-urlencoded functionality.
parse_test.go (10)
Learnt from: efectn
PR: gofiber/fiber#3162
File: hooks_test.go:228-228
Timestamp: 2024-12-13T08:14:22.851Z
Learning: In Go test files, prefer using the `require` methods from the `testify` package for assertions instead of manual comparisons and calls to `t.Fatal` or `t.Fatalf`.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-02T23:03:31.727Z
Learning: Unit tests in this project use testify require.
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/store.go:164-167
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests in this project use testify require.
Learnt from: luk3skyw4lker
PR: gofiber/storage#1342
File: clickhouse/clickhouse.go:106-107
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The `IsZero` function for `time.Time` structs in the ClickHouse storage driver was returning false even for zero value `time.Time` structs. As a result, a different verification logic was implemented to avoid bugs.
Learnt from: luk3skyw4lker
PR: gofiber/storage#1342
File: clickhouse/clickhouse.go:106-107
Timestamp: 2024-07-01T15:49:51.308Z
Learning: The `IsZero` function for `time.Time` structs in the ClickHouse storage driver was returning false even for zero value `time.Time` structs. As a result, a different verification logic was implemented to avoid bugs.
Learnt from: gaby
PR: gofiber/fiber#3170
File: ctx_test.go:1721-1724
Timestamp: 2024-10-16T12:12:30.506Z
Learning: In the Go unit tests in `ctx_test.go`, it is acceptable to use invalid CIDR notation such as `"0.0.0.1/31junk"` for testing purposes.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: sixcolors
PR: gofiber/fiber#2922
File: middleware/cors/utils.go:63-71
Timestamp: 2024-07-26T21:00:12.902Z
Learning: The project uses the testify/assert package for assertions in unit tests.
Learnt from: norri
PR: gofiber/recipes#2701
File: clean-code/app/datasources/database/db_mock.go:13-19
Timestamp: 2024-11-23T19:50:06.387Z
Learning: In test code within `clean-code/app/datasources/database/db_mock.go`, adding safety checks like context validation, safe type assertions, and extra documentation is not necessary.
Learnt from: juls0730
PR: gofiber/recipes#2710
File: tableflip/main.go:61-62
Timestamp: 2024-12-01T01:15:48.126Z
Learning: In the GoFiber `tableflip` recipe (`tableflip/main.go`), the implementation matches the upstream reference implementation. Future code suggestions should consider maintaining this alignment to ensure consistency.
🧬 Code Graph Analysis (1)
parse_test.go (1)
parse.go (1)
ParseFloat(128-227)
🪛 GitHub Check: lint
parse_test.go
[failure] 430-430:
float-compare: use require.InEpsilon (or InDelta) (testifylint)
[failure] 421-421:
float-compare: use require.InEpsilon (or InDelta) (testifylint)
🪛 GitHub Actions: golangci-lint
parse_test.go
[error] 421-421: golangci-lint: float-compare: use require.InEpsilon (or InDelta) (testifylint)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (9)
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- GitHub Check: Build (1.23.x, macos-13)
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🔇 Additional comments (1)
parse_test.go (1)
438-468: LGTM - Benchmark implementation follows established patterns.The benchmark implementation correctly follows the same pattern as other parsing benchmarks in the file, testing both string and byte slice variants against the standard library implementation.
Summary by CodeRabbit
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