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Checking for NULL pointer in C/C++ [closed]
In a recent code review, a contributor is trying to enforce that all NULL checks on pointers be performed in the following manner:
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Why should I declare a virtual destructor for an abstract class in C++?
I know it is a good practice to declare virtual destructors for base classes in C++, but is it always important to declare virtual destructors even for abstract classes that function as interfaces? Please provide some reasons and examples why.
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Disable all table constraints in Oracle
How can I disable all table constrains in Oracle with a single command?
This can be either for a single table, a list of tables, or for all tables.
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How to randomize (shuffle) a JavaScript array?
I have an array like this:
58 Answers
58
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How to estimate how much memory a Pandas' DataFrame will need?
I have been wondering... If I am reading, say, a 400MB csv file into a pandas dataframe (using read_csv or read_table), is there any way to guesstimate how much memory this will need? Just trying to get a better feel of data frames and memory...
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How to jump to a particular line in a huge text file?
Are there any alternatives to the code below:
16 Answers
16
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How to force 'cp' to overwrite directory instead of creating another one inside?
I'm trying to write a Bash script that will overwrite an existing directory. I have a directory foo/ and I am trying to overwrite bar/ with it. But when I do this:
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How to import a jar in Eclipse
How do I import a jar in Eclipse?
9 Answers
9
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Uses for the Java Void Reference Type?
There is a Java Void -- uppercase V-- reference type . The only situation I have ever seen it used is to parameterize Callable s
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Count character occurrences in a string in C++
How can I count the number of "_" in a string like "bla_bla_blabla_bla" ?
13 Answers
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