io

问题 I am trying to upload huge files to S3 using BufferedInputStream and providing it with a Buffer size of 5MB but the performance of the application is hindered because of the network speed/amount the available data to read is limited like mentioned in this answer link (limited to 1MB). This makes me upload 1MB as part size at a time to s3 using UploadPartRequest which increases my time to upload. So, is there any other better and fast way to upload to S3 using FileInputStream as a source. Is

问题 I have a UIViewController that implements some WKNavigationDelegate functions, and I want to unit test the logic in these functions. Here's an example: func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { guard let url = navigationAction.request.url else { decisionHandler(.cancel) return } if url.absoluteString != "https://my-approved-url" { decisionHandler(.cancel) return } decisionHandler(

问题 I have a UIViewController that implements some WKNavigationDelegate functions, and I want to unit test the logic in these functions. Here's an example: func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { guard let url = navigationAction.request.url else { decisionHandler(.cancel) return } if url.absoluteString != "https://my-approved-url" { decisionHandler(.cancel) return } decisionHandler(

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 6 years ago . Improve this question I'm sort of confused. Let's say I have a game that consists of some tiles and players. All these objects need to be saved so I can later start the game and restore the state. I already do this with simple files like an XML file or plain text files, where I

问题 I am working on a sorting project and I've come to the point where a main bottleneck is reading in the data. It takes my program about 20 seconds to sort 100,000,000 integers read in from stdin using cin and std::ios::sync_with_stdio(false); but it turns out that 10 of those seconds is reading in the data to sort. We do know how many integers we will be reading in (the count is at the top of the file we need to sort). How can I make this faster? I know it's possible because a student in a

问题 I am working on a sorting project and I've come to the point where a main bottleneck is reading in the data. It takes my program about 20 seconds to sort 100,000,000 integers read in from stdin using cin and std::ios::sync_with_stdio(false); but it turns out that 10 of those seconds is reading in the data to sort. We do know how many integers we will be reading in (the count is at the top of the file we need to sort). How can I make this faster? I know it's possible because a student in a

问题 This question already has answers here : What are the rules of automatic stdout buffer flushing in C? (5 answers) Closed 2 months ago . Does the printf() function in C need a \n at the end in order to work ? I tried printing out a simple statement without a newline at the end and it didn't work. Thanks. 回答1: The likely reason is a line buffered stdout , (this is implementation defined so I can't be 100% sure). In these implementations the content written to the buffer won't immediately be

问题 This question already has answers here : What are the rules of automatic stdout buffer flushing in C? (5 answers) Closed 2 months ago . Does the printf() function in C need a \n at the end in order to work ? I tried printing out a simple statement without a newline at the end and it didn't work. Thanks. 回答1: The likely reason is a line buffered stdout , (this is implementation defined so I can't be 100% sure). In these implementations the content written to the buffer won't immediately be

问题 This question already has answers here : What are the rules of automatic stdout buffer flushing in C? (5 answers) Closed 2 months ago . Does the printf() function in C need a \n at the end in order to work ? I tried printing out a simple statement without a newline at the end and it didn't work. Thanks. 回答1: The likely reason is a line buffered stdout , (this is implementation defined so I can't be 100% sure). In these implementations the content written to the buffer won't immediately be

问题 I've been learning assembly language recently, and I already know how to use the in/out command. But I have some questions: where did the port addresses come from, like 0x70. How do I know how many ports my computer has and the addresses of them. I've checked the Intel developer's manual, but I can't find the answer. Thank you for your attention 回答1: There's a maximum of 65536 IO ports, and most aren't used. The IO ports that are used on a modern PC can be split into 2 categories: PCI devices