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Get last n lines of a file, similar to tail
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def tail( f, lines=20 ):
total_lines_wanted = lines
BLOCK_SIZE = 1024
f.seek(0, 2)
block_end_byte = f.tell()
lines_to_go = total_lines_wanted
block_number = -1
blocks = [] # blocks of size BLOCK_SIZE, in reverse order starting
# from the end of the file
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How to find where gem files are installed
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10 Answers
10
Active
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Stacking DIVs on top of each other?
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10
If you mean by literally putting one on the top of the other, one on the top (Same X, Y positio...
Case-insensitive search in Rails model
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answered Feb 8 '10 at 9:35
alex.zherdevalex.zherdev
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How do I get the difference between two Dates in JavaScript?
...cript perfectly supports date difference out of the box
var msMinute = 60*1000,
msDay = 60*60*24*1000,
a = new Date(2012, 2, 12, 23, 59, 59),
b = new Date("2013 march 12");
console.log(Math.floor((b - a) / msDay) + ' full days between');
console.log(Math.floor(((b - a) % msDay) / msM...
Why use Ruby's attr_accessor, attr_reader and attr_writer?
...attributes, such as: attr_accessor :a, :b
– Andrew_1510
Jan 22 '14 at 6:55
2
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`date` command on OS X doesn't have ISO 8601 `-I` option?
... amit_gamit_g
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7
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When is std::weak_ptr useful?
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– The Vivandiere
Sep 19 '16 at 21:10
4
Another example, which I've used a few times at least, i...
Why do I get “Pickle - EOFError: Ran out of input” reading an empty file?
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edited Sep 10 '17 at 10:15
Ioannis Filippidis
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Node.js Web Application examples/tutorials [closed]
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answered Dec 2 '10 at 4:31
JeanNiBeeJeanNiBee
1,03988 silver badges66 bronze badges
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