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Biggest GWT Pitfalls? [closed]

I'm at the beginning/middle of a project that we chose to implement using GWT. Has anyone encountered any major pitfalls in using GWT (and GWT-EXT) that were unable to be overcome? How about from a performance perspective? ...
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Add Keypair to existing EC2 instance

... access to an account with 2 instances running that I cannot shut down (in production). I would however like to gain SSH access to these instances, is it possible to create a new Keypair and apply it to the instances so I can SSH in? Obtaining the exisiting pem file for the keypair the instances wer...
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Where should I put tags in HTML markup?

When embedding JavaScript in an HTML document, where is the proper place to put the <script> tags and included JavaScript? I seem to recall that you are not supposed to place these in the <head> section, but placing at the beginning of the <body> section is bad, too, since th...
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Why should hash functions use a prime number modulus?

...ught a data structures book off the bargain table for $1.25. In it, the explanation for a hashing function said that it should ultimately mod by a prime number because of "the nature of math". ...
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How to get the Full file path from URI

I'd like to get the full file path, from a URI. The URI isn't a Image, but it's a music file, but if i do it like the MediaStore Solution, it won't work if the app user selects eg Astro as browser, instead of Music Player. How do I solve this? ...
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Git submodule head 'reference is not a tree' error

I have a project with a submodule that is pointing to an invalid commit: the submodule commit remained local and when I try to fetch it from another repo I get: ...
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Can we define implicit conversions of enums in c#?

Is it possible to define an implicit conversion of enums in c#? 12 Answers 12 ...
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How to get existing fragments when using FragmentPagerAdapter

I have problem making my fragments communicating with each other through the Activity , which is using the FragmentPagerAdapter , as a helper class that implements the management of tabs and all details of connecting a ViewPager with associated TabHost . I have implemented FragmentPagerAdapter...
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How can I know which parts in the code are never used?

I have legacy C++ code that I'm supposed to remove unused code from. The problem is that the code base is large. 18 Answers...
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Which way is best for creating an object in JavaScript? Is `var` necessary before an object property

So far I saw three ways for creating an object in JavaScript. Which way is best for creating an object and why? 8 Answers ...