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Why is the JVM stack-based and the Dalvik VM register-based?
I'm curious, why did Sun decide to make the JVM stack-based and Google decide to make the DalvikVM register-based?
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What is the “right” way to iterate through an array in Ruby?
PHP, for all its warts, is pretty good on this count. There's no difference between an array and a hash (maybe I'm naive, but this seems obviously right to me), and to iterate through either you just do
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How can I create a unique constraint on my column (SQL Server 2008 R2)?
I have SQL Server 2008 R2 and I want to set a unique column.
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What is the HTML tabindex attribute?
What is the tabindex attribute used for in HTML?
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Print JSON parsed object?
I've got a javascript object which has been JSON parsed using JSON.parse I now want to print the object so I can debug it (something is going wrong with the function). When I do the following...
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How to make a promise from setTimeout
This is not a realworld problem, I'm just trying to understand how promises are created.
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Mongoose (mongodb) batch insert?
Does Mongoose v3.6+ support batch inserts now? I've searched for a few minutes but anything matching this query is a couple of years old and the answer was an unequivocal no.
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Checking length of dictionary object [duplicate]
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What's wrong with foreign keys?
I remember hearing Joel Spolsky mention in podcast 014 that he'd barely ever used a foreign key (if I remember correctly). However, to me they seem pretty vital to avoid duplication and subsequent data integrity problems throughout your database.
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Optimistic vs. Pessimistic locking
I understand the differences between optimistic and pessimistic locking. Now could someone explain to me when I would use either one in general?
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