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Heroku free account limited?
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Heroku provides, for free, a 5MB database
Heroku provides, for free, 1 dyno. A dyno is an instance of your application running and responding to requests. If each instance of your application can serve each request in 100ms, then you get 600 requests/minute with the free account.
Your applica...
How to sort a list in Scala by two fields?
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217
rows.sortBy(r => (r.lastName, r.firstName))
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How to suppress scientific notation when printing float values?
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12 Answers
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Possible Loss of Fraction
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169
When you divide two int's into a floating point value the fraction portion is lost. If you cas...
Timeout command on Mac OS X?
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130
You can use
brew install coreutils
And then whenever you need timeout, use
gtimeout
..i...
Regular expression to return text between parenthesis
...r problem is really just this simple, you don't need regex:
s[s.find("(")+1:s.find(")")]
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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191
Use INSERT ... ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `times_...
Maintain the aspect ratio of a div with CSS
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1388
Just create a wrapper <div> with a percentage value for padding-bottom, like this:
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What is “thread local storage” in Python, and why do I need it?
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edited Jan 28 at 21:34
Willwsharp
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answered Se...
Swift class introspection & generics
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109
Well, for one, the Swift equivalent of [NSString class] is .self (see Metatype docs, though th...