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Taryn East
72 followers -
ruby-on-rails developer. Geek
ruby-on-rails developer. Geek

72 followers
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Magnesium is our heavy-hitter fuel.
Here we describe the numbers that will get you to Mars and back on one tank of fuel.

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Neumann Space Fuel of the week: Vanadium

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Rails Active Record .median
Rails neatly provides an .average method to easily find the average value of a column on your db, but it doesn't provide one for finding the median. Thankfully it's really easily to implement If you just want to add it to one class, put this into the model:...

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Link: Flaws In Scrum And Agile
In The flaws in Scrum and Agile Giles Bowkett explains why Panda Strike feels that Agile is basically a past-technology. Good in it's day, with some useful lessons we can keep, but largely not relevant to the way that distributed teams work these days. It's...

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ActiveAdmin simple_table
ActiveAdmin by default will build you a table (using table_for) for a collection of objects. But sometimes you just want to throw up a quick table of random values - eg on a dashboard you want a table where the left=column is a description and the right col...

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Generate a subset of pseudo-random permutations in non mega-huge time
One of the neat things about sending packages via sendle is that you don't have to print out a label or even know the address of your recipient (this is done so the recipient can keep their address private if they want). Instead, we give the sender a pair o...

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Link: Fundamental Guidelines Of E-Commerce Checkout Design
"Here is the harsh reality of e-commerce websites: according to recent e-commerce studies, at least 59.8% of potential customers abandon their shopping cart (MarketingSherpa puts it at 59.8%, SeeWhy at 83% and MarketLive at 62.14%). The main question is why...

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Tips: Advisory locks in postgres
Advisory locks in postgres "PostgreSQL provides various lock modes to control concurrent access to data in tables. Advisory locks provide a convenient way to obtain a lock from PostgreSQL that is completely application enforced, and will not block writes to...

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Link: Asshole culture at Uber
Uber, darlings of the startup world, have displayed particularly poor taste and utter thoughtlessness towards 50% of the population with a promotion that they have quietly removed (without comment) since it was recently denounced. The article: The horrific ...

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Bochet: making black mead from caramelised honey
A caramelised-honey mead from Le Menagier de Paris (1393) TRANSLATION: to make six sesters of bochet, take six pints of good sweet honey and put it in a cauldron on the fire. And let it boil and stir as as long as it continues to rise up, and you see that i...
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