Getting rid of n when using readlines Stack Overflow
By using readlines like this you re effectively iterating over the entire file twice while also keeping the whole thing in memory at once Not only that but using s 1 can remove the last non newline character of the file I see no benefit to using this over any other solution
Ruby Skipping the first line when reading in a file in 1 9 3 Stack , 23 function drop n will remove n lines from the beginning File readlines filename drop 1 each do line puts line end It will read the whole file into an array and remove first n lines If you are reading whole file anyway it s probably the most elegant solution When reading larger files foreach will be more efficient as it doesn t
How to remove newLines at the beginning and at the end of a Ruby string
5 Answers Sorted by 44 You can use String strip method tgoodbye r n strip goodbye Share Improve this answer Follow edited Mar 8 2015 at 19 12 random forest cat 34 2k 12 120 100 answered Aug 23 2011 at 20 41 Daniel O Hara 13 4k 3 46 69 10
Trim blank newlines from string in Ruby Stack Overflow, 3 I have a string of four blank lines which all up makes eight lines in total in the following str aaa n n nbbb n nccc ddd n I want to return this all in one line The output should be like this on a single line aaabbbcccddd I used various trim functions to get the output but still I am failing
Remove line of text from file on ruby Stack Overflow
Remove line of text from file on ruby Stack Overflow, 2 I have a txt file with a series of strings on each line I need to find for a given string move that string to another file and remove that line from the file Moving to another file is working this is the code File open file moved txt w file file puts pick random line to i to s def pick random line chosen line nil File
How To Remove The Newline Character At The End Of Each Line In A Text
How to read lines of a file in Ruby Stack Overflow
How to read lines of a file in Ruby Stack Overflow File open file r do fh header fh readline Process the header while line fh gets nil do stuff end end This allows you to process a header line or lines differently than the content lines It is because of the endlines in each lines
Python Remove Newline Character From String Datagy
The chop method removes the last character of the string typically a trailing newline character If the character before the newline is a carriage return r it will be removed also The reason for this behavior is the discrepancy between different systems conceptions of what a newline is Removing Trailing Newlines and Other Characters The Ruby Way . Maz November 19 2007 8 15pm 1 At the very least the win32 implementation of Ruby s IO readlines method keeps the newline character on each string in the array Considering that it is the newline that defines a line it would not be wholly unreasonable to omit it from the array returned I would have imagined Double quotes allow character expansion and expression interpolation ie they let you use escaped control chars like n to represent their true value in this case newline and allow the use of expression so you can weave variables and well pretty much any ruby expression you like into the text
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