subscript

问题 I have a string resource file, which I want to pull strings from and I want one of the strings to have some superscript in it. From http://developer.android.com/guide/topics/resources/string-resource.html it looks like the supported tags include <b> , <i> , and <u> . I'm curious if it should work for other related tags, such as <sup> ... if so then my problem is solved. Testing the above should be easy enough, I'm just looking for a deeper understanding, to see if everything is processed

问题 It turns out that within a Dictionary extension, the subscript is quite useless since it says Ambiguous reference to member 'subscript' . It seems I'll either have to do what Swift does in its subscript(Key) or call a function. Any ideas? For example, public extension Dictionary { public func bool(_ key: String) -> Bool? { return self[key] as? Bool } } won't work, since the subscript is said to be ambiguous. ADDED My misunderstanding came from the fact that I assumed that Key is an

问题 I am parcing data from an XML file which has subscript and superscript characters in them which i got from the character map. Like so: <value column="Back" null="false">H₂</value> but when i display it on a textview in android it gives me this 'Hâ,,' how can i fix this and display it properly in my app? 回答1: I found out how In the XML file the code should be like this : <value column="Back" null="false">H₂</value> So that the parced string value is "H₂" then in the java

问题 I have been looking online for the UTF8 character table. And all I could find for subscripts were numbers 1 to 9 and some of latin letters. I need to find S and B as subscripts for UTF8 Thanks for the help. here is the link for a UTF8 character table: http://tlt.its.psu.edu/suggestions/international/bylanguage/mathchart.html 回答1: UNICODE doesn't have representation of all latin letters in subscripts and superscripts: just a few of those. You'll have to use markup to do that. For example, if

问题 was it possible to add operator func to Swift class subscript method var x = ["dkfkd", "dkff"] x[2] ??= "mmmm" // equal to x[2] = x[2] ?? "mmmm" 回答1: This isn’t related to the subscript operator, but more a question of how to define a ??= operator. Which you can do, but it might not work quite the way you expect. Here’s a possible implementation: // first define the ??= operator infix operator ??= { } // then some pretty standard logic for an assignment // version of ?? func ??=<T>(inout lhs:

问题 Admittedly I am new to R but I have looked around quite a bit and I can't seem to solve this. For superscript this works lovely mtext(expression(paste( italic("h") ^ italic("2"))), side=2, line = 2, cex=cexm) but when I try to get a subscript using the same approach mtext(expression(paste(italic("I") [] italic("a"))),side=2, line=2,cex=cexm) or mtext(expression(paste(italic("I"), italic(["a"]))),side=2, line=2,cex=cexm) plus several other variations on this theme R keeps telling me that there

问题 Apologies for long post! I'm new to R and have been working hard to improve my command of the language. I stumbled across this interesting project on modelling football results: http://www1.maths.leeds.ac.uk/~voss/projects/2010-sports/JamesGardner.pdf I keep running into problems when I run the code to Simulate a Full Season (first mentioned page 36, appendix page 59): Games <- function(parameters) { teams <- rownames(parameters) P <- parameters$teams home <- parameters$home n <- length(teams

问题 Quoting from the C11 standard : Array subsripting (§ 6.5.2.1) The definition of the subscript operator [] is that E1[E2] is identical to (*((E1)+(E2))) . I would like to know why are the brackets around E1 necessary (they were missing in the C89 standard), ie in which expression can (*(E1+(E2))) be different from (*((E1)+(E2))) ? 回答1: According to http://www.open-std.org/jtc1/sc22/wg14/www/docs/n841.htm, it is inserted just for clarity. The two expressions are the syntatically equivalent.

问题 Note: I changed the example from when I first posted. My first example was too simplified to capture the real problem. I have two data frames which are sorted differently in one column. I want to match one column and then merge in the value from the second column. The second column needs to stay in the same order. So I have this: state<-c("IA","IA","IA","IL","IL","IL") value1<-c(1,2,3,4,5,6) s1<-data.frame(state,value1) state<-c("IL","IL","IL","IA","IA","IA") value2<-c(3,4,5,6,7,8) s2<-data

问题 I'm aware that R markdown can produce superscripts: text^superscript But is it possible to produce proper subscripts? Or is the only way to do so to cheat and use LaTeX math mode: $\sf{text_{subscript}}$ The intended final output is HTML. 回答1: Since you mention Pandoc in your comments, maybe it's not cheating to depend on Pandoc's extensions for subscript and superscript . From here, we can create a minimal example Rmd file: Testing Subscript and Superscript ==================================