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- How to generate random datetime in Golang?
- How to generate random date and time in Golang? The simplest way is to use time.Now() and the rand function to randomly add or subtract seconds from the current time. For finer control, you can use the time.Parse and strconv functions to generate random dates and times by passing a custom format string.
- Golang 302 2024-06-05 14:12:07
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- How to extract useful information from error stack?
- The error stack is a record generated when an error is encountered during program execution, including the error type, location, and possible causes. When extracting useful information, first determine the error type (such as TypeError); secondly, find the error location, represented by "File" and line number; finally, view the error message to obtain more detailed information, such as undefined variables. Through practical cases, we can learn how to extract useful information from the error stack, including error type, error location, and error information.
- Golang 773 2024-06-05 14:09:57
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- How to use SQL injection protection in Golang?
- How to protect against SQL injection: Use parameterized queries: use user input as parameters of the query instead of including it in the query string. Using the SQLX package: Use the SQLX library to parameterize queries with named queries and placeholders. Validate input: Validate the validity of user input before using it in SQL queries.
- Golang 784 2024-06-05 14:04:27
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- Golang technology learning roadmap detailed: Beginner's guide
- The roadmap for learning Go language includes five stages: Basics: basic syntax, data types, package management Concurrency: goroutine, channel, concurrency model Error handling: error handling mechanism, error recovery Network and I/O: network programming, HTTP, WebSocket Advanced Topics: Interfaces, Reflection, Generics, Testing and Benchmarking
- Golang 1011 2024-06-05 13:58:57
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- Example of using golang framework extension to solve business pain points
- Summary: Using framework extensions in Golang can solve various business pain points. For example: Use gRPC to improve microservice communication efficiency: Import the necessary libraries to connect to the gRPC server and create a gRPC client to send RPC requests and print responses. Other useful Golang framework extensions: Echo (Web framework) Gin (High-performance Web framework) GORM (ORM) Celery (distributed task queue) Ent (feature-rich ORM)
- Golang 1032 2024-06-05 13:56:56
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- How to copy or move files using Golang?
- In Golang, you can use the os package to copy or move files: Copy files: Use io.Copy to copy the contents of the source file to the target file. Moving files: Use os.Rename to rename the source file to the target file, essentially moving the file.
- Golang 717 2024-06-05 13:46:56
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- Golang application sharing in the medical and health industry
- Go's applications in the healthcare field include: medical image processing (efficient processing using concurrency), medical device monitoring (low latency and reliability), drug discovery (parallelism and numerical computing).
- Golang 970 2024-06-05 13:37:58
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- Golang's application scenarios and practices in the financial industry
- Go language is widely used in the financial industry, and its advantages include high performance, concurrency, and fault tolerance. Application scenarios include high-frequency trading, risk management, distributed systems, API development and data processing. Practical cases include high-frequency trading platforms, risk management systems, clearing systems, market data APIs and big data analysis.
- Golang 532 2024-06-05 13:32:57
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- How to handle HTTP responses using Golang?
- Steps to use the net/http package to process HTTP responses in Golang: Parse the response: Use the http.Response type to obtain the response information. Get status code: Use the StatusCode field to get the response status code. Get headers: Use the Header field to get the response headers, which is a map[string][]string. Read the response body: Read the response body using the Body field, which is io.Reader. Practical example: Use JSONAPI to retrieve the response, parse the JSON and print the title of the post.
- Golang 637 2024-06-05 13:30:03
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- How to implement asynchronous file upload using Golang?
- How to implement asynchronous file upload with Go? Use http.MultipartFile to handle file uploads, which supports concurrent uploads. Create a goroutine to upload files asynchronously without blocking the main thread. Use io.Copy to write the file contents to a new file. Print a log message after successful upload.
- Golang 418 2024-06-05 13:20:57
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- Cloud native implementation of golang framework development process
- In the cloud native era, the Go framework development process can be cloud native. The process steps are as follows: Prepare the Go development environment, including the compiler, Go framework and Kubernetes cluster. Use gomodinit to create a Go project. Choose and install the Go framework that meets your needs. Use the framework to write RESTful API interfaces. Use dockerbuild to build a Docker image. Use kubectl to deploy the Docker image to the Kubernetes cluster.
- Golang 963 2024-06-05 13:19:57
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- Execution order and purpose of Golang function defer
- The defer function is used in the Go language to delay function calls until they are executed before the function returns, and is called in last-in-first-out (LIFO) order. Its uses include releasing resources, logging, and recovering from exceptions. The later deferred function will be called before the first deferred function.
- Golang 540 2024-06-05 13:10:57
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- The trade-offs of concurrency and parallel programming in Go
- The trade-offs between concurrency and parallel programming in Go: Concurrency: Good for low-latency responses, but cannot fully utilize multiple cores and may lead to data races. Parallel: Make full use of multiple cores, but the overhead is high and shared state synchronization needs to be done.
- Golang 322 2024-06-05 13:06:58
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- How to evaluate the performance of golang framework?
- A guide to evaluating the performance of Go frameworks: Compare the performance of frameworks using benchmarking tools. Adjust benchmark parameters (e.g. number of iterations, parallelism, memory allocation reporting) as needed. Comparing runtimes, shorter runtimes indicate better performance. Measures memory allocation, lower allocations indicate more efficient use of memory. Test the framework in real-life scenarios (such as HTTP server comparison).
- Golang 333 2024-06-05 13:04:57
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- How to compare values of custom types in Golang?
- In Golang, values of custom types can be compared by directly using the == operator for types with the same underlying representation. For more complex types, use the reflect.DeepEqual function to recursively compare the entire contents of two values.
- Golang 732 2024-06-05 13:04:00