append

问题 Suppose that I have arrays A and B in Go. What is the fastest way to append all the values of B to A ? 回答1: Arrays in Go are secondary, slices are the way to go. Go provides a built-in append() function to append slices: a := []int{1, 2, 3} b := []int{4, 5} a = append(a, b...) fmt.Println(a) Output: [1 2 3 4 5] Try it on the Go Playground. Notes: Arrays in Go are fixed sizes: once an array is created, you cannot increase its size so you can't append elements to it. If you would have to, you

问题 Suppose that I have arrays A and B in Go. What is the fastest way to append all the values of B to A ? 回答1: Arrays in Go are secondary, slices are the way to go. Go provides a built-in append() function to append slices: a := []int{1, 2, 3} b := []int{4, 5} a = append(a, b...) fmt.Println(a) Output: [1 2 3 4 5] Try it on the Go Playground. Notes: Arrays in Go are fixed sizes: once an array is created, you cannot increase its size so you can't append elements to it. If you would have to, you

问题 I'm creating a series of comments, with replies to the comments below them. I use this code to append the new reply underneath the comment. $(document).on('click', '.sub-reply1-send', function() { var reply = $('textarea[name=comment-reply]').val(); $('.sub-reply1, .sub-reply1-textarea, .sub-reply1-send').slideUp(250).remove(); $('.answer').append("<div class='comment-sub-reply' style='display:none'>" + reply + "</div>"); $('.comment-sub-reply').slideDown(250); subreply_visible = false; });

问题 I'm creating a series of comments, with replies to the comments below them. I use this code to append the new reply underneath the comment. $(document).on('click', '.sub-reply1-send', function() { var reply = $('textarea[name=comment-reply]').val(); $('.sub-reply1, .sub-reply1-textarea, .sub-reply1-send').slideUp(250).remove(); $('.answer').append("<div class='comment-sub-reply' style='display:none'>" + reply + "</div>"); $('.comment-sub-reply').slideDown(250); subreply_visible = false; });

问题 The capacity parameter in making a slice in Go does not make much sense to me. For example, aSlice := make([]int, 2, 2) //a new slice with length and cap both set to 2 aSlice = append(aSlice, 1, 2, 3, 4, 5) //append integers 1 through 5 fmt.Println("aSlice is: ", aSlice) //output [0, 0, 1, 2, 3, 4, 5] If the slice allows inserting more elements than the capacity allows, why do we need to set it in the make() function? 回答1: The builtin append() function uses the specified slice to append

问题 I am using TinyScheme (actually Script-Fu in GIMP), and cannot find a good way to open a file and append a line of text to it. I am trying to log some info to the file for debugging, and transcript-on doesn't seem to be implemented... Right now I am scraping along by reading the entire file (one character at a time!), concatenating that into a string, concatenating my text to the end of that, then writing it all out to the file again. There must be a better way! 回答1: It's going to be

问题 We were assigned to create a simple compiler as a homework that will take set of instructions (containing variables, conditions, jumps, etc.) and evaluate them. That's already done, but I thought I'd make my program little bit more… “shiny”, and add the ability to load instructions from a text file, just for the sake of user comfort; however, it seems that the JTextArea 's append () method doesn't seem to really like me, as it does exactly nothing. Here's the relevant code: BufferedReader

问题 We were assigned to create a simple compiler as a homework that will take set of instructions (containing variables, conditions, jumps, etc.) and evaluate them. That's already done, but I thought I'd make my program little bit more… “shiny”, and add the ability to load instructions from a text file, just for the sake of user comfort; however, it seems that the JTextArea 's append () method doesn't seem to really like me, as it does exactly nothing. Here's the relevant code: BufferedReader

问题 I'm trying to open a binary file for writing without erasing the content. But I do not want to write to eof. I want to write to a specific position in file. Here is a litte example: ofstream out("test.txt", ios::binary | ios::app); for(int i = 0; i < 100; i++) out.put('_'); out.write("Hallo", 5); out.close(); ofstream out2("test.txt", ios::binary | ios::app); out2.seekp(10); out2.write("Welt", 4); out2.close(); If using app, seek doesn't work. If not using app opening file erases data. Does

问题 I'm trying to open a binary file for writing without erasing the content. But I do not want to write to eof. I want to write to a specific position in file. Here is a litte example: ofstream out("test.txt", ios::binary | ios::app); for(int i = 0; i < 100; i++) out.put('_'); out.write("Hallo", 5); out.close(); ofstream out2("test.txt", ios::binary | ios::app); out2.seekp(10); out2.write("Welt", 4); out2.close(); If using app, seek doesn't work. If not using app opening file erases data. Does