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Expert R users, what's in your .Rprofile? [closed]
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I wrote a RStudio addin that included this feature. You just copy the path, click a menu from RStudio, and the converted path will be inserted into your cursor location. This should save some keystrokes.
– dracodoc
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Opacity of div's background without affecting contained element in IE 8?
...ie. CSS3Pie adds a number of modern CSS3 features to older versions of IE, including rgba background colours.
To use CSS3Pie for backgrounds, you need to add a specific -pie-background declaration to your CSS, as well as the PIE behavior style, so your stylesheet would end up looking like this:
.m...
Improve INSERT-per-second performance of SQLite
...s an array of ActiveRecords into MySQL, SQLite or PostgreSQL databases. It includes an option to ignore existing records, overwrite them or raise an error. My rudimentary benchmarks show a 10x speed improvement compared to sequential writes -- YMMV.
I'm using it in production code where I frequentl...
How does a hash table work?
..., there's already a book there.
Various collision handling methods exist, including running the data into yet another calculation to get another spot in the table (double hashing), or simply to find a space close to the one you were given (i.e. right next to the previous book assuming the slot was ...
How do you add swap to an EC2 instance?
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According to aws.amazon.com/ebs/pricing , IO is included in all EBS volumes except Provisioned IPOS SSD (io1). You only per GB. This could have been a recent change in the pricing model - but it means that even though EBS is much slower than true Instance Storace, there ar...
Is using 'var' to declare variables optional? [duplicate]
...think your insight deserves more exposure so I edited the chosen answer to include this information.
– Bruno Bronosky
Sep 21 '12 at 7:59
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Force Java timezone as GMT/UTC
...out setting the timezone for the entire JVM is that it affects everything, including such things as logging. Just something to keep in mind if that's the desired effect.
– Hermann Hans
Apr 13 '10 at 10:16
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Missing Maven dependencies in Eclipse project
...Java Build Path of you project at the Libraries tab the Maven Dependencies included:
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Unnecessary curly braces in C++?
..."too short"? That's extremely hard to do. 90% of developers (myself likely included) have the opposite problem.
– Ben Lee
Mar 20 '12 at 18:22
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