file-io

问题 I was wondering if it's possible to load the code contained in a Clojure .clj source file as a list, without compiling it. If I can load a .clj file as a list, I can modify that list and pretty print it back into the same file which can then be loaded again. (Maybe this is a bad idea.) Does anyone know if this is possible? 回答1: A slightly simpler example: user=> (def a '(println (+ 1 1))) ; "'" escapes the form to prevent immediate evaluation #'user/a user=> (spit "test.code" a) ; write it to

问题 I was wondering if it's possible to load the code contained in a Clojure .clj source file as a list, without compiling it. If I can load a .clj file as a list, I can modify that list and pretty print it back into the same file which can then be loaded again. (Maybe this is a bad idea.) Does anyone know if this is possible? 回答1: A slightly simpler example: user=> (def a '(println (+ 1 1))) ; "'" escapes the form to prevent immediate evaluation #'user/a user=> (spit "test.code" a) ; write it to

问题 i have a simple input file <input type="file" name="file" id="file"> but I'm trying to validate after the post if the input file has content. I trying with $("#file").val() but, the dom of the controls is the same always. 回答1: What do you mean by: after the post , do you mean: - After clicking on a submit button but before posting or submitting? -Or you mean after it has been submitted and the content has reached the server? If it is the first case, make sure to return false to the form so it

问题 I have a block of code that needs to open and read a lot of small text files from a NAS server using UNC paths. This code is part of a module that was originally written in C++ but is now being converted to C#. The C# version is significantly slower. I determined that the call to open the file accounts for nearly all of the performance difference. Using WireShark I found that this is because the System.IO.File.Open call makes far more SMB network requests than similar C++ code. The C++ code

问题 I have a block of code that needs to open and read a lot of small text files from a NAS server using UNC paths. This code is part of a module that was originally written in C++ but is now being converted to C#. The C# version is significantly slower. I determined that the call to open the file accounts for nearly all of the performance difference. Using WireShark I found that this is because the System.IO.File.Open call makes far more SMB network requests than similar C++ code. The C++ code

问题 reader := bufio.NewReader(os.Stdin) fmt.Print("Enter text: ") text, _ := reader.ReadString('\n') fmt.Println("Hello",text) How do I check if the user has entered a null value and where do I put the code? Note - I've already tried checking the length = 0 and = " " but, they don't seem to be working. Please suggest an alternative way for doing this. Thanks! 回答1: bufio.Reader.ReadString() returns a string that also contains the delimeter , in this case the newline character \n . If the user does

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Why do I get the “Unhandled exception type IOException”? I'm trying to solve Euler #8 using the following algorithm. Problem is, whenver I modify the line I have the giant comment on, the error Unhandled Exception Type IOException appears on each line that I've marked with the comment //### . private static void euler8() { int c =0; int b; ArrayList<Integer> bar = new ArrayList<Integer>(0); File infile = new

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Why do I get the “Unhandled exception type IOException”? I'm trying to solve Euler #8 using the following algorithm. Problem is, whenver I modify the line I have the giant comment on, the error Unhandled Exception Type IOException appears on each line that I've marked with the comment //### . private static void euler8() { int c =0; int b; ArrayList<Integer> bar = new ArrayList<Integer>(0); File infile = new

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Why do I get the “Unhandled exception type IOException”? I'm trying to solve Euler #8 using the following algorithm. Problem is, whenver I modify the line I have the giant comment on, the error Unhandled Exception Type IOException appears on each line that I've marked with the comment //### . private static void euler8() { int c =0; int b; ArrayList<Integer> bar = new ArrayList<Integer>(0); File infile = new

问题 Here is the important part of some existing code that I'm trying to adapt for my own uses. The notable part is that self.archive leads to a massive file and raw_file is binary data extracted (painfully) from this giant file. with open(self.archive, "rb") as f: f.seek(offset) raw_file = start + f.read(dlen - len(start)) ... f.write(raw_file) The existing code extracts the contents of an archive-like file to disk, but I need to only read these stored files from this archive (if that makes any