function

问题 What should I use if I want to have something like [a->b] -> a -> [b] basically I have a list of functions, all take in a value a and returns b . I want to apply all of them to one a and get the results [b] . Which one should I use? Thanks 回答1: You don't need Traversable , just Functor : swingMap f x = fmap ($ x) f See also the swing function (this is equivalent to swing fmap ). Or, if you're using Edward Kmett's distributive library, you can have the best of both this answer (only a Functor

问题 This question already has answers here : Sorting in JavaScript: Shouldn't returning a boolean be enough for a comparison function? (2 answers) Closed 1 year ago . I'm trying to write a function that returns the length of the shortest word in a string. It only works some of the time and I can't seem to figure out why. function findShort(s) { const stringArray = s.split(" "); // Compares the length of two words, then moves to the next till complete. // Returns the words in order of length const

问题 This question already has answers here : Sorting in JavaScript: Shouldn't returning a boolean be enough for a comparison function? (2 answers) Closed 1 year ago . I'm trying to write a function that returns the length of the shortest word in a string. It only works some of the time and I can't seem to figure out why. function findShort(s) { const stringArray = s.split(" "); // Compares the length of two words, then moves to the next till complete. // Returns the words in order of length const

问题 I have a question about how to pass an argument to ggplot if I want to have a 1-x x-axis. The function is being used to specify column name in my data frame. Let's say my data frame looks like x1 x2 x3 x4 0.1 0.2 0.3 0.4 0.3 0.5 0.7 0.9 0.4 0.6 0.8 0.2 And I have a function myfunction<- function(x, y, convert = False){ if (flip) { ggplot(data = mydata, aes(x=1-get(x), y=get(y))) + geom_line() + xlab(x) + ylab(y) } else { ggplot(data = mydata, aes(x=get(x), y=get(y))) + geom_line() + xlab(x) +

问题 I have a question about how to pass an argument to ggplot if I want to have a 1-x x-axis. The function is being used to specify column name in my data frame. Let's say my data frame looks like x1 x2 x3 x4 0.1 0.2 0.3 0.4 0.3 0.5 0.7 0.9 0.4 0.6 0.8 0.2 And I have a function myfunction<- function(x, y, convert = False){ if (flip) { ggplot(data = mydata, aes(x=1-get(x), y=get(y))) + geom_line() + xlab(x) + ylab(y) } else { ggplot(data = mydata, aes(x=get(x), y=get(y))) + geom_line() + xlab(x) +

问题 I have been working on this project and can't get it to work quite the way I want. I have two sheets with unique IDs in one column. I need to make sure whenever a new ID is added in one sheet (Sheet1), it is copied to the last empty row in the other sheet (Sheet2). Making sure it ignores it if the value already exist (to avoid duplicates). The idea was to create a function and have it triggered every minute or so. Below is the example spreadsheet and the script that is almost working now. The

问题 I have been working on this project and can't get it to work quite the way I want. I have two sheets with unique IDs in one column. I need to make sure whenever a new ID is added in one sheet (Sheet1), it is copied to the last empty row in the other sheet (Sheet2). Making sure it ignores it if the value already exist (to avoid duplicates). The idea was to create a function and have it triggered every minute or so. Below is the example spreadsheet and the script that is almost working now. The

问题 When generating test data, I want a field in new rows to default to a value of gibberish generated by lorem, a Lorem Ipsum generator for Java. Calling the lorem tool in Java looks like this: String lorem = LoremIpsum.getInstance().getWords( 100 , 120 ); I tried this SQL as my table definition: String sql = """ CREATE ALIAS LOREM FOR "com.thedeanda.lorem.LoremIpsum.getInstance().getWords( 100 , 120 )"; CREATE TABLE IF NOT EXISTS thing_ ( nonsense_ text NOT NULL , row_created_ TIMESTAMP WITH

问题 When generating test data, I want a field in new rows to default to a value of gibberish generated by lorem, a Lorem Ipsum generator for Java. Calling the lorem tool in Java looks like this: String lorem = LoremIpsum.getInstance().getWords( 100 , 120 ); I tried this SQL as my table definition: String sql = """ CREATE ALIAS LOREM FOR "com.thedeanda.lorem.LoremIpsum.getInstance().getWords( 100 , 120 )"; CREATE TABLE IF NOT EXISTS thing_ ( nonsense_ text NOT NULL , row_created_ TIMESTAMP WITH

问题 I have a function to save multiple dataframes as multiple tables to single excel workbook sheet: def multiple_dfs(df_list, sheets, file_name, spaces): writer = pd.ExcelWriter(file_name,engine='xlsxwriter') row = 0 for dataframe in df_list: dataframe.to_excel(writer,sheet_name=sheets,startrow=row , startcol=0) row = row + len(dataframe.index) + spaces + 1 writer.save() If I call this function multiple times to write multiple tables to multiple sheets, I end up with just one workbook and one