text-files

I love how in python I can do something like: points = [] for line in open("data.txt"): a,b,c = map(float, line.split(',')) points += [(a,b,c)] Basically it's reading a list of lines where each one represents a point in 3D space, the point is represented as three numbers separated by commas How can this be done in C++ without too much headache? Performance is not very important, this parsing only happens one time, so simplicity is more important. P.S. I know it sounds like a newbie question, but believe me I've written a lexer in D (pretty much like C++) which involves reading some text char

I am looking for a text editor that will be able to load a 4+ Gigabyte file into it. Textpad doesn't work. I own a copy of it and have been to its support site, it just doesn't do it. Maybe I need new hardware, but that's a different question. The editor needs to be free OR, if its going to cost me, then no more than $30. For Windows. VonC glogg could also be considered, for a different usage: Caveat (reported by Simon Tewsi in the comments , Feb. 2013) One caveat - has two search functions, Main Search and Quick Find . The lower one, which I assume is Quick Find , is at least an order of

I have a huge text file, size > 4GB and I want to replace some text in it programmatically. I know the line number at which I have to replace the text but the problem is that I do not want to copy all the text (along with my replaced line) to a second file. I have to do this within the source file. Is there a way to do this in C#? The text which has to be replaced is exactly the same size as the source text (if this helps). Since the file is so large you may want to take a look at the .NET 4.0 support for memory mapped files . Basically you'll need to move the file/stream pointer to the

I have 3 txt files s1.txt, s2.txt, s3.txt .Each have the same format and number of data.I want to combine only the second column of each of the 3 files into one file. Before I combine the data, I sorted it according to the 1st column: UnSorted file: s1.txt s2.txt s3.txt 1 23 2 33 3 22 4 32 4 32 2 11 5 22 1 10 5 28 2 55 8 11 7 11 Sorted file: s1.txt s2.txt s3.txt 1 23 1 10 2 11 2 55 2 33 3 22 4 32 4 32 5 28 5 22 8 11 7 11 Here is the code I have so far: BaseFile ='s' n=3 fid=fopen('RT.txt','w'); for i=1:n %Open each file consecutively d(i)=fopen([BaseFile num2str(i)'.txt']); %read data from

I have an openFileButton that, when clicked, will open a file that looks like this: RefDeg Part# Xcntr Ycntr Rot PkgStyle U6 IC-00279G 33.411 191.494 0 QFP32 U1 IC-00272G 38.011 200.644 90 BGA177 U5 IC-00273G 46.311 179.494 0 QFP40 R54 EXCLUDES 36.411 173.694 0 0402_2 R71 EXCLUDES 38.236 186.994 0 0402_2 R39 EXCLUDES 38.861 188.544 90 0402_2 C23 CAP-00130G 37.911 178.854 90 0402_3 C88 CAP-00010G 52.036 179.019 0 0603_4 C89 CAP-00010G 43.561 173.744 90 0603_3 X1 XTL-00013G 49.211 204.819 0 Crystal X2 XTL-00012G 53.061 183.469 0 Crystal D1 LED-00011G 58.611 181.394 0 LED U10 IC-00198G 56.661 205