大约有 48,000 项符合查询结果(耗时:0.0664秒) [XML]

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When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s

...about them lately, but I'm still unsure why I would want to implement one, and under what circumstances I would want to use one. ...
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How do I tell CPAN to install all dependencies?

... automatic first-time CPAN configuration: perl -MCPAN -e 'my $c = "CPAN::HandleConfig"; $c->load(doit => 1, autoconfig => 1); $c->edit(prerequisites_policy => "follow"); $c->edit(build_requires_install_policy => "yes"); $c->commit' Or combine it with local::lib module for ...
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iOS Tests/Specs TDD/BDD and Integration & Acceptance Testing

...he best technologies to use for behavior-driven development on the iPhone? And what are some open source example projects that demonstrate sound use of these technologies? Here are some options I've found: ...
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How to install a previous exact version of a NPM package?

I used nvm to download node v0.4.10 and installed npm to work with that version of node. 10 Answers ...
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Using ThreadPool.QueueUserWorkItem in ASP.NET in a high traffic scenario

...read at all. That goes for both free threads, created by new Thread(...), and worker threads in the ThreadPool that respond to QueueUserWorkItem requests. Yes, it's true, you can starve the ThreadPool in an ASP.NET process by queuing too many work items. It will prevent ASP.NET from processing fu...
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Android: combining text & image on a Button or ImageButton

I'm trying to have an image (as the background) on a button and add dynamically, depending on what's happening during run-time, some text above/over the image. ...
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Generate array of all letters and digits

Using ruby, is it possible to make an array of each letter in the alphabet and 0-9 easily? 7 Answers ...
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The Guava library: What are its most useful and/or hidden features? [closed]

I have had a quick scan of the Guava API and the new collection types it provides( Multimap and BiMap for example appear useful) and I am thinking of including the library in the project(s) I work on. ...
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demystify Flask app.secret_key

... a cryptographic hashing algorithm; only if you have the exact same secret and the original data can you recreate this value, letting Flask detect if anything has been altered without permission. Since the secret is never included with data Flask sends to the client, a client cannot tamper with sess...
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What is an intuitive explanation of the Expectation Maximization technique? [closed]

... here. Suppose we have some data sampled from two different groups, red and blue: Here, we can see which data point belongs to the red or blue group. This makes it easy to find the parameters that characterise each group. For example, the mean of the red group is around 3, the mean of the blue...