大约有 47,000 项符合查询结果(耗时:0.0996秒) [XML]

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Smooth scrolling when clicking an anchor link

... Update April 2018: There's now a native way to do this: document.querySelectorAll('a[href^="#"]').forEach(anchor => { anchor.addEventListener('click', function (e) { e.preventDefault(); document.querySelector(this.getAttribute(...
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When should I use Memcache instead of Memcached?

...s named memcache and memcached . What is the difference and how do you know which one to use? Is one outdated? It seems that memcached offers more methods so I would assume that means it has had the most development - but it also seems to require external C/C++ libraries so I'm not sure if I ca...
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MongoDB mongorestore failure: locale::facet::_S_create_c_locale name not valid

...-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL= Now mongo also should do fine. share | improve this answer | follow | ...
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Want to find records with no associated records in Rails

... This is really good! Thanks! Now if the rails gods could perhaps implement it as a simple Person.where(contacts: nil) or Person.with(contact: contact) if using where encroaches too far into 'properness' - but given that contact: is already being parsed a...
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What open source C++ static analysis tools are available? [closed]

... Under development for now, but clang does C analysis and is targeted to handle C++ over time. It's part of the LLVM project. Update: While the landing page says "The analyzer is a continuous work-in-progress", it is nevertheless now documented as...
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How to chain scope queries with OR instead of AND?

...ou would do Person.where('name=? OR lastname=?', 'John', 'Smith') Right now, there isn't any other OR support by the new AR3 syntax (that is without using some 3rd party gem). share | improve thi...
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WebSocket with SSL

... So, what's the solution? I've a WS server running over http now I bought an SSL and browser no more allow me to connect with WS. I turned WS to WSS:// and now its not connecting with WebSocket – muaaz Jan 1 '16 at 6:30 ...
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ruby operator “=~” [duplicate]

... This operator matches strings against regular expressions. s = 'how now brown cow' s =~ /cow/ # => 14 s =~ /now/ # => 4 s =~ /cat/ # => nil If the String matches the expression, the operator returns the offset, and if it doesn't, it returns nil. It's slightly more complicated than...
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Check whether a variable is a string in Ruby

... Without knowing the question's intent, I'd say for most real-world programming situations, is_a? is actually the more appropriate idiom to use (and often a duck-typing check like Andrew Grimm mentions is even better). A strict class c...
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How do I update a formula with Homebrew?

... This is indeed the correct way now. The old ways will still work if use append --force. – mxcl Feb 28 '12 at 17:37 2 ...