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Is there a difference between using a dict literal and a dict constructor?
...ith python 3.4 + pycharm is that the dict() constructor
produces a "syntax error" message if the number of keys exceeds 256.
I prefer using the dict literal now.
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How can Perl's print add a newline by default?
In Perl most of my print statements take the form
8 Answers
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How to grep and replace
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Why do I get "sed: RE error: illegal byte sequence". And yes, I added the -i "" for OS X. It works otherwise.
– taco
Jun 16 '16 at 19:51
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How do I list the symbols in a .so file
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answered Jan 6 '18 at 0:05
user7610user7610
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Regular expression \p{L} and \p{N}
I am new to regular expressions and have been given the following regular expression:
2 Answers
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When do you use Java's @Override annotation and why?
... context) {
return true;
}
This change will not cause any compile time errors or warnings - but it completely changes the intended behavior of the subclass.
To answer your question: you should use the @Override annotation if the lack of a method with the same signature in a superclass is indic...
完美解决phpcms批量移动内容后，新闻心情、评论排行等不更新的问题 - 更多...
...新的问题问题描述：phpcms批量移动内容 文章，批量更新URL -> "批量更新内容页"后，发现原内容的评论、新闻心情全部丢失，这还不算差，后台评论排...问题描述：
phpcms批量移动内容/文章，”批量更新URL“ -> "批量更新内容页"...
How to convert String to long in Java?
I got a simple question in Java: How can I convert a String that was obtained by Long.toString() to long ?
9 Answers
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write a shell script to ssh to a remote machine and execute commands
...r@]host[:port] for single-host.
-i: Display standard output and standard error as each host completes
-x args: Passes extra SSH command-line arguments
-o option: Can be used to give options in the format used in the configuration file.(/etc/ssh/ssh_config) (~/.ssh/config)
-p parallelism: U...
What happens to an open file handle on Linux if the pointed file gets moved or deleted
...lug) then the file handle won't be valid any more and is likely to give IO/error on any operation. You still have to close it though. This is going to be true even if the device is plugged back in, as it's not sensible to keep a file open in this case.
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