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How big is too big for a PostgreSQL table?
I'm working on the design for a RoR project for my company, and our development team has already run into a bit of a debate about the design, specifically the database.
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What does an Asterisk (*) do in a CSS selector?
I found this CSS code and I ran it to see what it does and it outlined EVERY element on the page,
5 Answers
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How can I add a boolean value to a NSDictionary?
Well, for integers I would use NSNumber . But YES and NO aren't objects, I guess. A.f.a.i.k. I can only add objects to an NSDictionary , right?
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What is the “reactor” in Maven?
I've been reading about Maven reactor and am confused by its terminology usage. I've read that a multi-module is a reactor, that you can manipulate the maven reactor and that the reactor is a plugin. What exactly is the reactor?
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What events does an fire when it's value is changed?
...<input type="number" /> element fires when its up / down arrows are clicked:
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How do I combine two data frames?
I'm using Pandas data frames. I have a initial data frame, say D . I extract two data frames from it like this:
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Why is Cache-Control attribute sent in request header (client to server)?
After reading about the Cache-Control field of the HTTP header,
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scopes with lambda and arguments in Rails 4 style?
...ng how the following is done in Rails 4 or if I just use the Rails 3 approach for using a lambda that can pass an argument the same way with 4 as I do with 3.
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How do I use the includes method in lodash to check if an object is in the collection?
lodash lets me check for membership of basic data types with includes :
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How to get the parents of a Python class?
How can I get the parent class(es) of a Python class?
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