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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
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I'll disagree with Chris's answer in one regard. The classes Any, AnyRef and AnyVal are classes...
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edited Sep 19 '11 at 9:27
answered Sep 19 '11 at 8:09
Vl...
What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
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2 Answers
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Active
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Getting the docstring from a function
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251
Interactively, you can display it with
help(my_func)
Or from code you can retrieve it with
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How to check if a column exists in Pandas
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answered Jul 21 '14 at 16:48
chrisbchrisb
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How to set initial size of std::vector?
... so I don't use list. How to set initial size of vector (for example to be 20 000 places, so to avoid copy when I insert new)?
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Do I need to manually close an ifstream?
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NO
This is what RAII is for, let the destructor do its job. There is no harm in closing it ma...
java SSL and cert keystore
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System.setProperty("javax.net.ssl.trustStore", path_to_your_jks_file);
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Difference between Select Unique and Select Distinct
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BenAlabasterBenAlabaster
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'const string' vs. 'static readonly string' in C#
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When you use a const string, the compiler embeds the string's value at compile-time.
Therefore, ...