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Code Golf: Collatz Conjecture
Inspired by http://xkcd.com/710/ here is a code golf for it.
70 Answers
70
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When should I use Struct vs. OpenStruct?
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180
With an OpenStruct, you can arbitrarily create attributes. A Struct, on the other hand, must ha...
How to print a percentage value in python?
...supports a percentage floating point precision type:
>>> print "{0:.0%}".format(1./3)
33%
If you don't want integer division, you can import Python3's division from __future__:
>>> from __future__ import division
>>> 1 / 3
0.3333333333333333
# The above 33% example wo...
HTML5 Email Validation
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120
In HTML5 you can do like this:
<form>
<input type="email" placeholder="Enter your emai...
SQL statement to select all rows from previous day
...rom one table. The table holds one datetime column. I am using SQL Server 2005.
11 Answers
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Objective-C - Remove last character from string
...hat method you can trim your string like this:
if ([string length] > 0) {
string = [string substringToIndex:[string length] - 1];
} else {
//no characters to delete... attempting to do so will result in a crash
}
If you want a fancy way of doing this in just one line of code you...
Empty arrays seem to equal true and false at the same time
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d_ethier
3,6042020 silver badges3030 bronze badges
answered Mar 30 '11 at 20:10
wildcardwildcard
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How to add leading zeros?
...f digits to begin with, so let's try a harder example of making powers of 10 width 8 too.
anim <- 25499:25504
x <- 10 ^ (0:5)
paste (and it's variant paste0) are often the first string manipulation functions that you come across. They aren't really designed for manipulating numbers, but ...
Hadoop “Unable to load native-hadoop library for your platform” warning
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230
I assume you're running Hadoop on 64bit CentOS. The reason you saw that warning is the native Ha...