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How to run a single test from a rails test suite?

How can I run a single test from a rails test suite? 12 Answers 12 ...
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Using emit vs calling a signal as if it's a regular function in Qt

Let's say I have this signal: 3 Answers 3 ...
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How can I expand and collapse a using javascript?

I have created a list on my site. This list is created by a foreach loop that builds with information from my database. Each item is a container with different sections, so this is not a list like 1, 2, 3... etc. I am listing repeating sections with information. In each section, there is a subse...
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Simple way to encode a string according to a password?

Does Python have a built-in, simple way of encoding/decoding strings using a password? 19 Answers ...
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SQLite Concurrent Access

Does SQLite3 safely handle concurrent access by multiple processes reading/writing from the same DB? Are there any platform exceptions to that? ...
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How to use a link to call JavaScript?

How to use a link to call JavaScript code? 9 Answers 9 ...
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What is an invariant?

The word seems to get used in a number of contexts. The best I can figure is that they mean a variable that can't change. Isn't that what constants/finals (darn you Java!) are for? ...
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Why use Ruby instead of Smalltalk? [closed]

Ruby is becoming popular , largely from the influence Ruby on Rails, but it feels like it is currently struggling through its adolescence. There are a lot of similarities between Ruby and Smalltalk -- maglev is a testament to that. Despite having a more unusual syntax, Smalltalk has all (if not m...
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What is the optimal length for user password salt? [closed]

Any salt at all will obviously help when salting and hashing a user's password. Are there any best practices for how long the salt should be? I'll be storing the salt in my user table, so I would like the best tradeoff between storage size and security. Is a random 10 character salt enough? Or ...
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Adding a UILabel to a UIToolbar

I'm trying to add a label to my toolbar. Button works great, however when I add the label object, it crashes. Any ideas? 8 ...