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How is Racket different from Scheme?
... descendant of Scheme. How is Racket different than R6RS? What did it add, or take away, or is just different?
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What are all the different ways to create an object in Java?
Had a conversation with a coworker the other day about this.
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Why does Bootstrap set the line-height property to 1.428571429?
...nt to make sure you have ample white space between your rows. This allows for ascenders and descenders without intruding on other rows. Also having ample white space allows your eyes to develop a visual rhythm while reading.
Also keeping the line-height unitless makes it more versatile. For more in...
How do I unlock a SQLite database?
How do I unlock the database so this will work?
35 Answers
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Designing function f(f(n)) == -n
...In other languages the largest positive integer will overflow, so it will work for all integers except that one.
To make it work for real numbers you need to replace the n in (-1)n with { ceiling(n) if n>0; floor(n) if n<0 }.
In C# (works for any double, except in overflow situations):
st...
What's the difference between dist-packages and site-packages?
...hat's the difference between packages installed in the dist-packages directory and the site-packages directory?
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How to upgrade PowerShell version from 2.0 to 3.0
... 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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UITableView : viewForHeaderInSection: not called during reloadData:
I've set up the tableview with correct delegate and datasource linkages.. the reloadData method calls the datasource and the delegate methods except for viewForHeaderInSection: .
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How to find a parent with a known class in jQuery?
...method returns the innermost parent of your element that matches the selector.
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Fast and Lean PDF Viewer for iPhone / iPad / iOS - tips and hints?
...yer when zooming is 1. Those tiles will be released automatically when memory warnings are issued.
Whenever the user start zooming, I acquire the CGPDFPage and render it using the appropriate CTM. The code in - (void)drawLayer: (CALayer*)layer inContext: (CGContextRef) context is like :
CGAffin...