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What is the !! (not not) operator in JavaScript?
I saw some code that seems to use an operator I don't recognize, in the form of two exclamation points, like so: !! . Can someone please tell me what this operator does?
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Programmatically creating Markdown tables in R with KnitR
I am just starting to learn about KnitR and the use of Markdown in generating R documents and reports. This looks to be perfect for a lot of the day to day reporting that I have to do with my job. However, one thing that I'm not seeing is an easy way to print data frames and tables using Markdown fo...
How to use Git properly with Xcode?
...y extra work.
Lastly, here is my complete .gitignore file, showing what I do have it set to ignore as there are a few things you don't want - in my case really just emacs remnants and the whole build directory:
# xcode noise
build/*
*.pbxuser
*.mode1v3
*~
# old skool
.svn
# osx noise
.DS_Store
p...
Equivalent of *Nix 'which' command in PowerShell?
How do I ask PowerShell where something is?
14 Answers
14
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Measure execution time for a Java method [duplicate]
How do I calculate the time taken for the execution of a method in Java?
8 Answers
8
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What do all of Scala's symbolic operators mean?
...st be a method, or part of one. But, often, you'll see some symbol and the documentation for the class will not have that method. When this happens, either you are looking at a composition of one or more methods with something else, or the method has been imported into scope, or is available through...
IIS7 Overrides customErrors when setting Response.StatusCode?
... existingResponse property is Auto:
Auto tells custom error module to do the right thing. Actual error text seen by clients will be affected depending on value of fTrySkipCustomErrors returned in IHttpResponse::GetStatus call. When fTrySkipCustomErrors is set to true, custom error module will l...
What is “overhead”?
...earing the word "overhead" a lot when it comes to programs and sorts. What does this mean exactly?
12 Answers
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Using Laravel Homestead: 'no input file specified'
..."You have arrived" screen when I run "php artisan serve" but when I try to do the same thing via Vagrant, I get "no input file specified". My Homestead.yaml file looks like this:
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Sort points in clockwise order?
Given an array of x,y points, how do I sort the points of this array in clockwise order (around their overall average center point)? My goal is to pass the points to a line-creation function to end up with something looking rather "solid", as convex as possible with no lines intersecting.
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