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Getting the count of unique values in a column in bash
... see a frequency count for column two (for example):
awk -F '\t' '{print $2}' * | sort | uniq -c | sort -nr
fileA.txt
z z a
a b c
w d e
fileB.txt
t r e
z d a
a g c
fileC.txt
z r a
v d c
a m c
Result:
3 d
2 r
1 z
1 m
1 g
1...
What is Java String interning?
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242
http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#intern()
Basically doing Strin...
Add a fragment to the URL without causing a redirect?
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edited May 16 '12 at 0:01
answered Nov 26 '10 at 2:04
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Generate random password string with requirements in javascript
...k?
Math.random() // Generate random number, eg: 0.123456
.toString(36) // Convert to base-36 : "0.4fzyo82mvyr"
.slice(-8);// Cut off last 8 characters : "yo82mvyr"
Documentation for the Number.prototype.toString and string.p...
How do I test if a variable is a number in Bash?
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How to secure MongoDB with username and password
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120
You need to start mongod with the --auth option after setting up the user.
From the MongoDB Si...
How to determine if binary tree is balanced?
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27 Answers
27
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How to draw border around a UILabel?
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265
You can set label's border via its underlying CALayer property:
#import <QuartzCore/Quartz...
How do you get the width and height of a multi-dimensional array?
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247
You use Array.GetLength with the index of the dimension you wish to retrieve.
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In C/C++ what's the simplest way to reverse the order of bits in a byte?
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