大约有 46,000 项符合查询结果(耗时:0.0703秒) [XML]

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What does the 'standalone' directive mean in XML?

... to tell the parser to ignore these rules. Whether or not your parser actually does this is another question, but a standards-compliant validating parser (like a browser) should. Note that if you do not specify a DTD, then the standalone declaration "has no meaning," so there's no reason to use it...
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How to configure postgresql for the first time?

I have just installed postgresql and I specified password x during installation. When I try to do createdb and specify any password I get the message: ...
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Git diff says subproject is dirty

I have just run a git diff, and I am getting the following output for all of my approx 10 submodules 9 Answers ...
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How to work offline with TFS

...no need for 'Go offline' extensions. I read something about a new feature called local workspace for the similar purpose. Alternatively I had good success with Git-TF. All the goodness of git and when you are ready, you can push it to TFS. ...
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Pros and cons of AppSettings vs applicationSettings (.NET app.config / Web.config)

... you cannot safely assume your number that you wanted to configure there really is a number - someone could put a string into that setting..... you just access it as ConfigurationManager["(key)"] and then it's up to you to know what you're dealing with. Also, over time, the <appSettings> can...
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.NET - Dictionary locking vs. ConcurrentDictionary

... a can from a pyramid-can while a clerk is currently building the pyramid, all hell would break loose. Or, what if two customers reaches for the same item at the same time, who wins? Will there be a fight? This is a non-threadsafe-collection. There's plenty of ways to avoid problems, but they all re...
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Why do we need tuples in Python (or any immutable data type)?

... immutable objects can allow substantial optimization; this is presumably why strings are also immutable in Java, developed quite separately but about the same time as Python, and just about everything is immutable in truly-functional languages. in...
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Replace transparency in PNG images with white background

...ings with Image Magick "convert" operations, but either nothing happens at all or I get an error. I don't want to go to an intermediate JPG form because I don't want the artifacts. Of course it's easy to do this in Gimp or Photoshop or whatever, but I'd really rather script it from the command lin...
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Why Large Object Heap and why do we care?

...used holes), it makes the CPU cache much more efficient. The cache is a really big deal on modern processors, they are an easy order of magnitude faster than the memory bus. Compacting is done simply by copying bytes. That however takes time. The larger the object, the more likely that the cost ...
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Favourite performance tuning tricks [closed]

...les (possibly archive the deleted records) Consider doing this automatically once a day or once a week. Rebuild Indexes Rebuild Tables (bcp data out/in) Dump / Reload the database (drastic, but might fix corruption) Build new, more appropriate index Run DBCC to see if there is possible corru...