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How to upgrade PowerShell version from 2.0 to 3.0
...m using is Windows 7, and the PowerShell version that is installed here is 2.0. Is it possible for me to upgrade it to version 3.0 or 4.0?
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How to replace four spaces with a tab in Sublime Text 2?
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Bottom right hand corner on the status bar, click Spaces: N (or Tab Width: N, where N is an inte...
Abusing the algebra of algebraic data types - why does this work?
...oint strikingly. You mentioned in a comment that for a tree type T = 1 + T^2 you can derive the identity T^6 = 1, which is clearly wrong. However, T^7 = T does hold, and a bijection between trees and seven-tuples of trees can be constructed directly, cf. Andreas Blass's "Seven Trees in One".
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How to install MySQLdb (Python data access library to MySQL) on Mac OS X?
...t one of the most pernicious problems is that OS X comes installed with a 32 bit version of Python, but most average joes (myself included) probably jump to install the 64 bit version of MySQL. Bad move... remove the 64 bit version if you have installed it (instructions on this fiddly task are avai...
What is the best way to determine the number of days in a month with JavaScript?
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201
function daysInMonth (month, year) { // Use 1 for January, 2 for February, etc.
return ...
How can I repeat a character in Bash?
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32 Answers
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ExecJS::RuntimeError on Windows trying to follow rubytutorial
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242
My friend was attempting a Rails tutorial on Win 8 RTM a few months ago and ran into this erro...
Compare two Byte Arrays? (Java)
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In your example, you have:
if (new BigInteger("1111000011110001", 2).toByteArray() == array)
When dealing with objects, == in java compares reference values. You're checking to see if the reference to the array returned by toByteArray() is the same as the reference held in array, which of...
Finding sum of elements in Swift array
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let sum = multiples.reduce(0, +)
print("Sum of Array is : ", sum)
Swift 2:
let multiples = [...]
sum = multiples.reduce(0, combine: +)
Some more info:
This uses Array's reduce method (documentation here), which allows you to "reduce a collection of elements down to a single value by recursi...