大约有 3,270 项符合查询结果(耗时:0.0258秒) [XML]

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What's the right way to pass form element state to sibling/parent elements?

...n your situation. If the app is a simple Markdown converter, C1 being the raw input and C2 being the HTML output, it's OK to let C1 trigger a setState in P, but some might argue this is not the recommended way to do it. However, if the app is a todo list, C1 being the input for creating a new todo...
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HEAD and ORIG_HEAD in Git

...013: reintroduced with commit 9ba89f4 ) Instead of typing four capital letters "HEAD", you can say "@" now, e.g. "git log @". See commit cdfd948 Typing 'HEAD' is tedious, especially when we can use '@' instead. The reason for choosing '@' is that it follows naturally from the ref@op...
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Why are joins bad when considering scalability?

...atabase used well. There are a number of scalability-friendly ways to take raw joins and make them much faster: Join on a surrogate key (autonumer/identity column) rather than a natural key. This means smaller (and therefore faster) comparisons during the join operation Indexes Materialized/indexed...
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Embedding unmanaged dll into a managed C# dll

...needs to have a file for the DLL to load it - it cannot load an image from raw memory), and wherever it's trying to do that the process does not have permission. Something like Process Monitor from SysInternals might give you a clue if the pronblem is that creating the DLL file is failing... Updat...
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Basic example of using .ajax() with JSONP?

... simple examples of JSONP usage, these are not production ready scripts. RAW JavaScript demonstration (simple Twitter feed using JSONP): <html> <head> </head> <body> <div id = 'twitterFeed'></div> <script> function myCa...
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Start thread with member function

...of class (it's not visible for programmer), so when passing this method as raw function you will always encounter a problem during compilation and declaration mismatch. – zoska Oct 10 '13 at 11:56 ...
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What do hjust and vjust do when making a plot using ggplot?

...useful to have the alignment relative to the axis.) DF <- data.frame(x=LETTERS[1:3],y=1:3) p <- ggplot(DF, aes(x,y)) + geom_point() + ylab("Very long label for y") + theme(axis.title.y=element_text(angle=0)) p1 <- p + theme(axis.title.x=element_text(hjust=0)) + xlab("X-axis at h...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

...cape sequence and universal-character-name in a character literal or a non-raw string literal, is converted to the corresponding member of the execution character set; [SNIP] Adjacent string literal tokens are concatenated. White-space characters separating tokens are no longer significant. Each pre...
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How much does it cost to develop an iPhone application? [closed]

...ause you are paying a team of people a healthy hourly wage and any type of raw prototyping, development, and coding takes time. Apps can exceed 60-100k pretty easily. Southwest Airlines making an app with a full ecommerce platform that allows you to buy tickets over your phone is an example. All of ...
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How to decide when to use Node.js?

...nuclear reactors.) Added to that, many of the packages in NPM are a little raw, and still under rapid development. Some libraries for older frameworks have undergone a decade of testing and bugfixing, and are very stable by now. Npmjs.org has no mechanism to rate packages, which has lead to a proli...