range

I'm using a content-editable iframe to create a syntax-highlighter in javascript and one of the most important things is to be able to indent code properly. The following code works just as it should in Firefox: // Create one indent character var range = window.getSelection().getRangeAt(0); var newTextNode = document.createTextNode(Language.tabChar); range.insertNode(newTextNode); range.setStartAfter(newTextNode); It creates a tab char and moves the cursor to the right side of the character. In Chrome and Safari a character is inserted but the cursor won't move to the right of it. I inspected

I have a data frame that I want to remove duplicates that are consecutive (in base). I know rle may be helpful here but can't think of how to use it. The example output will help to illuminate what I'm asking for. Generate sample data: set.seed(12) samps <- sample(1:5, 20, T) dat <- data.frame(v1=LETTERS[samps], v2=month.abb[samps]) dat[10, 2] <- "Mar" Sample data: v1 v2 1 A Jan 2 E May 3 E May 4 B Feb 5 A Jan 6 A Jan 7 A Jan 8 D Apr 9 A Jan 10 A Mar 11 B Feb 12 E May 13 B Feb 14 B Feb 15 B Feb 16 C Mar 17 C Mar 18 C Mar 19 D Apr 20 A Jan Desired outcome: v1 v2 1 A Jan 3 E May 4 B Feb 7 A Jan

I want to do the following: std::vector<int> a = {1,2,3}, b = {4,5,6}, c = {7,8,9}; for(auto&& i : join(a,b,c)) { i += 1 std::cout << i; // -> 2345678910 } I tried using boost::range::join , this works fine: auto r = boost::join(a,b); for(auto&& i : boost::join(r,c)) { i += 1; std::cout << i; // -> 2345678910 } Chaining joins, reading operations work: for(auto&& i : boost::join(boost::join(a,b),c)) std::cout << i; // -> 123456789 However , writing doesn't work: for(auto&& i : boost::join(boost::join(a,b),c)) { i += 1; // Fails :( std::cout << i; } My variadic join has the same problem, i.e.

I am a LINQ newbie trying to use it to acheive the following: I have a list of ints:- List<int> intList = new List<int>(new int[]{1,2,3,3,2,1}); Now, I want to compare the sum of the first three elements [index range 0-2] with the last three [index range 3-5] using LINQ. I tried the LINQ Select and Take extension methods as well as the SelectMany method, but I cannot figure out how to say something like (from p in intList where p in Take contiguous elements of intList from index x to x+n select p).sum() I looked at the Contains extension method too, but that doesn't see to get me what I want.

I am working in a domain in which ranges are conventionally described inclusively. I have human-readable descriptions such as from A to B , which represent ranges that include both end points - e.g. from 2 to 4 means 2, 3, 4 . What is the best way to work with these ranges in Python code? The following code works to generate inclusive ranges of integers, but I also need to perform inclusive slice operations: def inclusive_range(start, stop, step): return range(start, (stop + 1) if step >= 0 else (stop - 1), step) The only complete solution I see is to explicitly use + 1 (or - 1 ) every time I

NO SETS! I can't use Sets because: The ranges will be too long. They will take up too much memory The creation of the sets themselves will take too long. Using only the endpoints of the of the ranges, is there an optimal way to subtract two lists of ranges? Example: r1 = (1, 1000), (1100, 1200) r2 = (30, 50), (60, 200), (1150, 1300) r1 - r2 = (1, 29), (51, 59), (201, 1000), (1100, 1149) Other info: r2 does not have to overlap r1 r1 and r2 will not have pairs that overlap other pairs. For instance, r1 will not have both (0,30) and (10, 25) Thanks. The interval package may provide all that you