character

问题 I got this question using read.table() with or without header=T , trying to extract a vector of doubles from the resulting data.frame with as.double(as.character()) (see ?factor ). But that's just how I realized that I don't understand R's logic. So you won't see e.g. read.table in the code below, only the necessary parts. Could you tell me what's the difference between the following options? With header=T equivalent: (a <- data.frame(array(c(0.5,0.5,0.5,0.5), c(1,4)))) as.character(a) # [1]

问题 I have this JSON file in this format; [{ "item-id" : "0", "item-name" : "Dwarf remains", "item-examine" : "The body of a Dwarf savaged by Goblins.", "shop-value" : "0.0", "low-alch" : "0.0", "high-alch" : "0.0", "stab-bonus" : "0", "slash-bonus" : "0", "crush-bonus" : "0", "magic-bonus" : "0", "ranged-bonus" : "0", "stab-defence" : "0", "slash-defence" : "0", "crush-defence" : "0", "magic-defence" : "0", "ranged-defence" : "0", "strength-bonus" : "0", "prayer-bonus" : "0", }, { "item-id" : "1

问题 I need to check if a word starts with a vowel or a consonant, something like that: let word = "ciao" if wordStartsWithVowel { print("Word starts with Vowel!") } How can I do that? 回答1: extension Character { var isVowel: Bool { return "aeiouAEIOU".contains { String($0).compare(String(self).folding(options: .diacriticInsensitive, locale: nil), options: .caseInsensitive) == .orderedSame } } } extension StringProtocol { var startsWithVowel: Bool { return first?.isVowel == true } } let word =

问题 I'm trying to create multiple dummy variables, based on one column called 'Tags' within my df (14 rows, 2 columns, Score and Tags. My problem is that in each cell there can be any number of chr values (up to about 30 values). When I ask for: str(df$Tags) R returns: chr [1:14] "\"biologische gerechten\", \"certificaat van uitmuntendheid tripadvisor 2016\", \"gebruik streekproducten\", \"lactose intolera"| __truncated__ ... And when I ask for: df$Tags[1] R returns: [1] "\"biologische gerechten\

问题 I'm working with a 2D list of numbers similar to the example below I and am trying to reorder the columns: D C B A 1 3 2 0 1 3 2 0 1 3 2 0 The first row of the list is reserved for letters to reference each column. How can I sort this list so that these columns are placed in alphabetical order to achieve the following: D C B A A B C D 1 3 2 0 0 2 3 1 1 3 2 0 0 2 3 1 1 3 2 0 0 2 3 1 I've found examples that make use of lambdas for sorting, but have not found any similar examples that sort

问题 So I'm trying to use a vector to recapitulate this command, which works well on my data grid.arrange(Sig1.plot,Sig2.plot,Sig3.plot,Sig4.plot). The vector is > Plots.restricted [1] "Sig1.plot,Sig2.plot,Sig3.plot,Sig4.plot" > class(Plots.restricted) [1] "character" However, doing grid.arrange(as.name(Plots.restricted),ncol=1) returns the following error Error in arrangeGrob(..., as.table = as.table, clip = clip, main = main, : input must be grobs! Alternatively, I tried Plots.reference<- paste

问题 I am working on Twitter. I got data from Twitter with Stream API and the result of app is JSON file. I wrote tweets data in a text file and now I see Unicode characters instead of Turkish characters. I don't want to do find/replace in Notepad++ by hand. Is there any automatic option to replace characters by opening txt file, reading all data in file and changing Unicode characters with Turkish characters by Python? Here are Unicode characters and Turkish characters which I want to replace. ğ

问题 It used to be so simple. Or so I thought. nbsp is an entity   is, therefore, an entity reference (a reference to an entity)   is a character reference (a reference to a numerical character value) But these days, I read so many documents, even official ones, where those words are all mangled together; you have character entities, named character references, numerical entities, reference entities, and so on. So what is it really? How are these things really called? Who can I trust to have it

问题 I need to get the EBCDIC value of a character in C. I don't know how. Do I have to get the ASCII value first then get the EBCDIC value from there? Thanks anyone 回答1: If you're on a system that uses EBCDIC as the character encoding, you already have it: char xyzzy = 'A'; // xyzzy is now 0xc1 If your environment is an ASCII one and you simply want the EBCDIC code point, you can just use a lookup table built from both tables, like: A lookup tables for a system using 8-bit ASCII characters to

问题 I am trying to accept input from the user in the form of a character. I have that working but I need to check and make sure it is one of 6 characters (H, h, S, s, L, l). I have a while loop but as soon as add more than one character statement to it, the loop gives the error for every value that should be correct. Here is the function: private static char getHighLow(Scanner keyboard) { System.out.println("High, Low, or Sevens (H/L/S): "); String choiceString = keyboard.next(); char choice =