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LINQ Partition List into Lists of 8 members [duplicate]

醉酒当歌 提交于 2019-11-26 13:29:44
This question already has an answer here: Split List into Sublists with LINQ 27 answers How would one take a List (using LINQ) and break it into a List of Lists partitioning the original list on every 8th entry? I imagine something like this would involve Skip and/or Take, but I'm still pretty new to LINQ. Edit: Using C# / .Net 3.5 Edit2: This question is phrased differently than the other "duplicate" question. Although the problems are similar, the answers in this question are superior: Both the "accepted" answer is very solid (with the yield statement) as well as Jon Skeet's suggestion to

Skip first couple of lines while reading lines in Python file

不打扰是莪最后的温柔 提交于 2019-11-26 12:20:57
问题 I want to skip the first 17 lines while reading a text file. Let\'s say the file looks like: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 good stuff I just want the good stuff. What I\'m doing is a lot more complicated, but this is the part I\'m having trouble with. 回答1: Use a slice, like below: with open('yourfile.txt') as f: lines_after_17 = f.readlines()[17:] If the file is too big to load in memory: with open('yourfile.txt') as f: for _ in range(17): next(f) for line in f: # do stuff 回答2: Use

read.csv, header on first line, skip second line [duplicate]

你说的曾经没有我的故事 提交于 2019-11-26 06:36:48
问题 This question already has an answer here: How can I read the header but also skip lines - read.table()? 5 answers I have a CSV file with two header rows, the first row I want to be the header, but the second row I want to discard. If I do the following command: data <- read.csv(\"HK Stocks bbg.csv\", header = T, stringsAsFactors = FALSE) The first row becomes the header and the second row of the file becomes the first row of my data frame: Xaaaaaaaaa X X.1 Xbbbbbbbbbb X.2 X.3 1 Date PX_LAST