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Exclude .svn directories from grep [duplicate]
When I grep my Subversion working copy directory, the results include a lot of files from the .svn directories. Is it possible to recursively grep a directory, but exclude all results from .svn directories?
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How to prevent a dialog from closing when a button is clicked
I have a dialog with EditText for input. When I click the "yes" button on dialog, it will validate the input and then close the dialog. However, if the input is wrong, I want to remain in the same dialog. Every time no matter what the input is, the dialog should be automatically closed when I clic...
Nested defaultdict of defaultdict
...ke a defaultdict also be the default for the defaultdict? (i.e. infinite-level recursive defaultdict?)
7 Answers
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程序员之网络安全系列（六）：动态密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...知道了用户密码，那么就可以冒充用户了。
比如银行的U盾，因为我对这块业务不了解，我猜银行为每个用户发放了一个公钥？（ 知道的同学，可以帮忙解释一下银行的U盾都做了什么? )
我们用数字证书确定了银行的身份，那...
Difference between Mutable objects and Immutable objects [duplicate]
Any one please give the diff between Mutable objects and Immutable objects with example.
5 Answers
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Setting environment variables on OS X
What is the proper way to modify environment variables like PATH in OS X?
31 Answers
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Convert timestamp to readable date/time PHP
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Use PHP's date() function.
Example:
echo date('m/d/Y', 1299446702);
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Position of least significant bit that is set
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SparseArray vs HashMap
I can think of several reasons why HashMap s with integer keys are much better than SparseArray s:
7 Answers
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How to zero pad a sequence of integers in bash so that all have the same width?
I need to loop some values,
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