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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
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116
Usage of the $ like ${HOME} gives the value of HOME. Usage of the $ like $(echo foo) means run...
What is .sln.docstates file created by Visual Studio Productivity Power Tools?
Visual Studio Productivity Power Tools Version 10.0.20427.1, updated 10 May 2011, is creating a .sln.docstates file.
1 Answ...
MongoDB - Update objects in a document's array (nested updating)
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For question #1, let's break it into two parts. First, increment any document that has "items.item_name" equal to "my_item_two". For this you'll have to use the positional "$" operator. Something like:
db.bar.update( {user_id : 123456...
How to match any non white space character except a particular one?
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156
You can use a character class:
/[^\s\\]/
matches anything that is not a whitespace characte...
How to get first and last day of the week in JavaScript
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190
var curr = new Date; // get current date
var first = curr.getDate() - curr.getDay(); // First ...
Best way to test if a generic type is a string? (C#)
...n we will have a default instance of the type, not null. Here is attempt 1:
6 Answers
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John Carmack's Unusual Fast Inverse Square Root (Quake III)
...ulates the inverse square root of a float, 4x faster than regular (float)(1.0/sqrt(x)) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why this works so much faster than the regular implementation?
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How to set an environment variable only for the duration of the script?
On Linux (Ubuntu 11.04) in bash, is it possible to temporarily set an environment variable that will only be different from the normal variable for the duration of the script? For example, in a shell script, making an app that saves to HOME portable by temporarily setting HOME to a folder in the pre...
Convert numpy array to tuple
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161
>>> arr = numpy.array(((2,2),(2,-2)))
>>> tuple(map(tuple, arr))
((2, 2), (2...