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ActiveRecord: size vs count
In Rails, you can find the number of records using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different?
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Multiple DB Contexts in the Same DB and Application in EF 6 and Code First Migrations
...t uses EF 6. I am using Code First Migrations. I am using Areas in the app and would like to have different DbContexts in each area to break it up. I know EF 6 has ContextKey, but I can't find complete information on how to use it. Currently I can only use migrations one context at a time.
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How do I concatenate const/literal strings in C?
I'm working in C, and I have to concatenate a few things.
17 Answers
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PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
... will work with no trouble. So you definitely want to go with one database and multiple schemas within that database.
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Expanding tuples into arguments
Is there a way to expand a Python tuple into a function - as actual parameters?
4 Answers
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Rails migrations: self.up and self.down versus change
Looks like the new rails version has "change" versus self.up and self.down methods.
3 Answers
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Regex to replace everything except numbers and a decimal point
... is the code that I'm currently using to replace everything except numbers and a decimal point. Issue is, I can't figure out a regex that will identify everything else
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Rails I18n validation deprecation warning
I just updated to rails 4.0.2 and I'm getting this warning:
5 Answers
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What did MongoDB not being ACID compliant before v4 really mean?
I am not a database expert and have no formal computer science background, so bear with me. I want to know the kinds of real world negative things that can happen if you use an old MongoDB version prior to v4 , which were not ACID compliant. This applies to any ACID noncompliant database.
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google oauth2 redirect_uri with several parameters
...asdafwswdwefwsdg,
Retrieve the state, base64UrlDecode it, json_decode it, and you have your data.
See more about google OAuth 2 here:
http://code.google.com/apis/accounts/docs/OAuth2.html
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