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How to get record created today by rails activerecord?

How should I write the conditional statement for when I want to get all the records which were created today? 10 Answers ...
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How do I turn a C# object into a JSON string in .NET?

I have classes like these: 14 Answers 14 ...
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Simple explanation of MapReduce?

Related to my CouchDB question. 8 Answers 8 ...
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Why are Objective-C delegates usually given the property assign instead of retain?

I'm surfing through the wonderful blog maintained by Scott Stevenson, and I'm trying to understand a fundamental Objective-C concept of assigning delegates the 'assign' property vs 'retain'. Note, the both are the same in a garbage collected environment. I'm mostly concerned with a non-GC based envi...
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Clojure differences between Ref, Var, Agent, Atom, with examples

I'm very new to Clojure, Can you guys give me explanation with real world scenarios. I mean, where to use Ref, Var, Agent, Atom. I read book, but, still couldn't understand the real world examples. ...
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What special characters must be escaped in regular expressions?

I am tired of always trying to guess, if I should escape special characters like ' ()[]{}| ' etc. when using many implementations of regexps. ...
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Resize HTML5 canvas to fit window

How can I automatically scale the HTML5 <canvas> element to fit the page? 15 Answers ...
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Real-world examples of recursion [closed]

What are real-world problems where a recursive approach is the natural solution besides depth-first search (DFS)? 55 Ans...
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How to round an image with Glide library?

So, anybody know how to display an image with rounded corners with Glide? I am loading an image with Glide, but I don't know how to pass rounded params to this library. ...
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using lodash .groupBy. how to add your own keys for grouped output?

I have this sample data returned from an API. 9 Answers 9 ...