大约有 14,600 项符合查询结果(耗时:0.0347秒) [XML]

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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib

I'm just starting out with Ruby (and rails). I did the setup according to http://ruby.railstutorial.org/ruby-on-rails-tutorial-book#sec:ruby gems, using rvm . I have everything working well with sqlite. ...
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What is mod_php?

... is not real PHP; it's just an Apache addon. Or rather, I think you should start off the answer with a definition of What exactly does PHP mean? – Pacerier Apr 11 '16 at 22:51 ...
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How to take the first N items from a generator or list in Python? [duplicate]

... list top5 = array[:5] To slice a list, there's a simple syntax: array[start:stop:step] You can omit any parameter. These are all valid: array[start:], array[:stop], array[::step] Slicing a generator import itertools top5 = itertools.islice(my_list, 5) # grab the first five elements You ...
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What is the maximum value for an int32?

... you know, when i started reading your answer i was expecting something practical, like the 20th digit. – JqueryToAddNumbers Nov 16 '15 at 9:55 ...
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Get last n lines of a file, similar to tail

..._number = -1 blocks = [] # blocks of size BLOCK_SIZE, in reverse order starting # from the end of the file while lines_to_go > 0 and block_end_byte > 0: if (block_end_byte - BLOCK_SIZE > 0): # read the last block we haven't yet read f....
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Passing a single item as IEnumerable

...After I renamed the extension method to SingleItemAsEnumerable, everything started to work. Cannot convert IEnumerable<Dictionary<CheckBox,System.Tuple<int,int>>.KeyCollection>' to 'IEnumerable<CheckBox>'. An explicit conversion exists (are you missing a cast?) I can live wi...
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?

...downloaded the latest version of IDEA IntelliJ, 11. But it doesn't seem to start without JDK 6. Is there any workaround? 5 ...
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Why .NET String is immutable? [duplicate]

...hey all pointed to the same instance (time-consuming, but a minute's extra start-up to save a massive amount of memory was a performance win in the case in question). With mutable objects that can't be done. No side-effects can come from passing an immutable type as a method to a parameter unless it...
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Dealing with “java.lang.OutOfMemoryError: PermGen space” error

... The solution was to add these flags to JVM command line when Tomcat is started: -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled You can do that by shutting down the tomcat service, then going into the Tomcat/bin directory and running tomcat6w.exe. Under the "Java" tab, add the ar...
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Shell - Write variable contents to a file

... None of the answers above work if your variable: starts with -e starts with -n starts with -E contains a \ followed by an n should not have an extra newline appended after it and so they cannot be relied upon for arbitrary string contents. In bash, you can use "here stri...