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Comment Data set is not reliable anyways... (Score 1) 62

Much of the data in there is not the highest quality, precisely because it is user generated. There are often 5 to 10+ entries for the same thing. Sometimes it means a difference of 5-10 calories, but other entries miss key nutrition values entirely. Worse, some of them are flat out wrong, often deliberately so. Finding the "right" entry for your item AND trusting that the values are correct is a bit of a chore even with the barcode scanner.

At first when I read this story, I figured the cost was to assist in data cleanup and better curation ultimately providing a premium experience worth paying for. Sadly that doesn't look to be the case here...

Comment How to fix Uber (Score 1) 122

Optimize the software on the driver's side so that they have a lot more control about where and when they work. Instead of being a taxi company fueled by tech, think micro-transactions.

.

If I am planning to drive to the store late in the day, let me as a driver input that trip ahead of time with an acceptable window of departure. The system will attempt to match me up to riders who also want to go that way at about the same time. Driver makes less (they were going there anyways), rider may wait a little longer or need to plan ahead better, less cars on the road, rider pays less, everyone wins.

With so many drivers and so many trips, the tipping point for this to work out seems so trivial to reach... Make it about ride SHARING and it will work out :)

Comment Re:Death rates are WAAAY overblown. Hold it anyway (Score 1) 12

I know you're an AC, but lest some reader thinks your reply is insightful:

* "immuno-compromised" includes people taking immuno-supressants, such as those with Crohn's, Ankylosing Spondylitis, etc.
* some people attending may have a newborn or elderly at home, and they could take a new infection back home with them

Comment Re:Don't refresh - Rethink! Become a Nazi TODAY! (Score 1) 140

I find it increasingly hard to understand what value people get from trolling on slashdot, now. I mean, the value proposition has always been questionable, but now that /. is well past its heyday, the comment sections are a ghost town. There's not really anyone around to give trolls the attention they crave.

Comment Re:So... (Score 1) 306

One of my mantras is '!@#$ing Microsoft'

Recently had a teammate show me a simple rewrite of one (Microsoft SQL) line: orig: a is not null or b is not null, new: not (a is null and b is null). Logically equivalent. From two hours to twenty seconds?!?

Hold up. You are claiming that an application of De Morgan's Law on that simple SQL query sped up your run-time by 360x?

I don't have much experience with SQL, so take this as just a request for info with merely a tinge of scepticism (rather than full-on scepticism.) But:

(assuming 'a' and 'b' both represent SQL queries)

* Your 'orig' looks like it would often get away with just 1 query (i.e, if 'a' proves to be not-null, then no point querying 'b')
* Your 'new' looks like it would always perform 2 queries

Which leads me to the following observations:

* 'orig' actually looks to be more performant that 'new'
* Even if you just accidentally swapped your telling of 'orig' and 'new' in your comment here, still at best you are looking at a 2x speed up, not the 360x speedup you are claiming.

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