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Insert code into the page context using a content script

I'm learning how to create Chrome extensions. I just started developing one to catch YouTube events. I want to use it with YouTube flash player (later I will try to make it compatible with HTML5). ...
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Convert base class to derived class [duplicate]

... public string StrProp { get; set; } } In global.asax or application startup: AutoMapper.Mapper.CreateMap<A, B>(); Usage: var b = AutoMapper.Mapper.Map<B>(a); It's easily configurable via a fluent API. ...
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How to set time delay in javascript

... calls you can use the method below: function sleep(milliseconds) { var start = new Date().getTime(); for (var i = 0; i < 1e7; i++) { if ((new Date().getTime() - start) > milliseconds){ break; } } } ...
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Flask vs webapp2 for Google App Engine

I'm starting new Google App Engine application and currently considering two frameworks: Flask and webapp2 . I'm rather satisfied with built-in webapp framework that I've used for my previous App Engine application, so I think webapp2 will be even better and I won't have any problems with it. ...
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What are the uses for Cross Join?

...t's possible it was a table of events and he needed to change it separate "start event" and "end event" entries). He realized that if he had a table with just two rows, he could do a cross join, selecting just the columns in the first table, and get exactly had he needed. So he created a simple tab...
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What is Lazy Loading?

...ht use lazy loading, consider an application that takes a LOOOOONG time to start. This application is probably doing a lot of eager loading... loading things from disk, and doing calculations and whatnot long before it is ever needed. Compare this to lazy loading, the application would start much ...
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How do you unit test a Celery task?

...g.py exists in one's package. See docs.celeryproject.org/en/latest/getting-started/…. – Kamil Sindi Mar 18 '16 at 16:35 1 ...
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Regular Expression for alphanumeric and underscores

...ns, and probably a lot of other languages as well. Breaking it down: ^ : start of string [ : beginning of character group a-z : any lowercase letter A-Z : any uppercase letter 0-9 : any digit _ : underscore ] : end of character group * : zero or more of the given characters $ : end of string If ...
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What Computer Science concepts should I know? [closed]

... You can start with a Wikipedia article I linked to - it's both quite simple and mathematically correct. – sharptooth Apr 14 '09 at 12:56 ...
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OwinStartup not firing

I had the OwinStartup configuration code working perfectly and then it stopped working. Unfortunately I'm not sure exactly what I did to get it to stop working and am having a really hard time figuring it out. ...