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Select row with most recent date per user
...able ("lms_attendance") of users' check-in and out times that looks like this:
11 Answers
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Using Rails 3.1, where do you put your “page specific” JavaScript code?
...nderstanding, all of your JavaScript gets merged into 1 file. Rails does this by default when it adds //= require_tree . to the bottom of your application.js manifest file.
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How efficient can Meteor be while sharing a huge collection among many clients?
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The short answer is that only new data gets sent down the wire. Here's
how it works.
There are three important parts of the Meteor server that manage
subscriptions: the publish function, which defines the logic for what
data the subscriptio...
How does interfaces with construct signatures work?
...king out how defining constructors in interfaces work. I might be totally misunderstanding something. But I have searched for answers for a good while and I can not find anything related to this.
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Validate that a string is a positive integer
...ould like the simplest fail-safe test to check that a string in JavaScript is a positive integer.
13 Answers
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Difference between local and global indexes in DynamoDB
...curious about these two secondary indexes and differences between them. It is hard to imagine how this looks like. And I think, this will help more people than just me.
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How to disable text selection highlighting
... , etc. which are located on the top of the Stack Overflow page) or tabs, is there a CSS standard way to disable the highlighting effect if the user accidentally selects the text?
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Curly braces in string in PHP
What is the meaning of { } (curly braces) in string literals in PHP?
5 Answers
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Ruby on Rails: how to render a string as HTML?
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UPDATE
For security reason, it is recommended to use sanitize instead of html_safe. Link
What's happening is that, as a security measure, Rails is escaping your string for you because it might have malicious code embedded in it. But if you tell Rails th...
sql primary key and index
...n create another doesn't indicate that the PK index doesn't also already exist.
The additional index does no good, but the only harm (very small) is the additional file size and row-creation overhead.
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