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How to check i<em>fem> a value exists in an array in Ruby

I have a value 'Dog' and an array ['Cat', 'Dog', 'Bird'] . 26 Answers 26 ...
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Is there a JavaScript / jQuery DOM change listener?

Essentially I want to have a script execute when the contents o<em>fem> a DIV change. Since the scripts are separate (content script in the Chrome extension & webpage script), I need a way simply observe changes in DOM state. I could set up polling but that seems sloppy. ...
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Di<em>fem><em>fem>erence between Service, Async Task & Thread?

What is the di<em>fem><em>fem>erence between Service, Async Task & Thread. I<em>fem> i am not wrong all o<em>fem> them are used to do some stu<em>fem><em>fem> in background. So, how to decide which to use and when? ...
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Understanding events and event handlers in C#

I understand the purpose o<em>fem> events, especially within the context o<em>fem> creating user inter<em>fem>aces. I think this is the prototype <em>fem>or creating an event: ...
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How do I cast a string to integer and have 0 in case o<em>fem> error in the cast with PostgreSQL?

In PostgreSQL I have a table with a varchar column. The data is supposed to be integers and I need it in integer type in a query. Some values are empty strings. The <em>fem>ollowing: ...
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Why is it wrong to use std::auto_ptr with standard containers?

Why is it wrong to use std::auto_ptr&lt;&gt; with standard containers? 6 Answers 6 ...
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How to calculate md5 hash o<em>fem> a <em>fem>ile using javascript

Is there a way to calculate the MD5 hash o<em>fem> a <em>fem>ile be<em>fem>ore the upload to the server using Javascript? 12 Answers ...
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MySQL - why not index every <em>fem>ield?

Recently I've learned the wonder o<em>fem> indexes, and per<em>fem>ormance has improved dramatically. However, with all I've learned, I can't seem to <em>fem>ind the answer to this question. ...
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How to POST raw whole JSON in the body o<em>fem> a Retro<em>fem>it request?

This question may have been asked be<em>fem>ore but no it was not de<em>fem>initively answered. How exactly does one post raw whole JSON inside the body o<em>fem> a Retro<em>fem>it request? ...
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json_decode to array

I am trying to decode a JSON string into an array but i get the <em>fem>ollowing error. 12 Answers ...