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How to iterate over rows in a DataFrame in Pandas
...ating over multiple columns" example needs a caveat: DataFrame.values will convert every column to a common data type. DataFrame.to_numpy() does this too. Fortunately we can use zip with any number of columns.
– David Wasserman
Jan 16 at 20:44
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How can I use different certificates on specific connections?
...n, but in the end yours is the approach I took. I had a gruelling task of converting the PEM certificate file to a JKS Java keystore file, and I found assistance for that here: stackoverflow.com/questions/722931/…
– skiphoppy
May 13 '09 at 21:37
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Is Fortran easier to optimize than C for heavy calculations?
...t heavily use c++ for their high performance modeling. Additionally Sandia converted one of their modeling software (LAMMPS) over from fortran to c++ adding in a number of awesome enhancements.
– Zachary Kraus
Sep 9 '15 at 3:46
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Does use of final keyword in Java improve the performance?
...
}
if (doSomething) {
// do finalization part.
}
}
By converting the doSomething attribute into a final attribute, you have told the compiler that whenever it sees doSomething, it should replace it with false as per the compile-time substitution rules. The first pass of the comp...
Rails update_attributes without save?
...ed, and they are to a degree, but this type of error can easily occur when converting data from an API, or even just using a series of data transformation and forgetting to Hash[] the results of the final .map. Maintain some code 50 lines above and 3 functions removed from your attribute assignment...
Is there a way to crack the password on an Excel VBA Project?
...ch worked for me on a .xlsm file. I saved it as a .xls, did this, and then converted it back to .xlsm. It should be noted you can safely increase the length of the file if the new CMG... string is longer than the original.
– Drew Chapin
May 10 '16 at 16:33
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Why Func instead of Predicate?
...meter and return types, the compiler gives error CS0029: Cannot implicitly convert type 'ExceptionHandler1' to 'ExceptionHandler2'.
Maybe this will make it clearer:
public static bool IsNegative(int x)
{
return x < 0;
}
static void Main(string[] args)
{
Predicate<int> p = IsNegat...
Why does C++ need a separate header file?
...hat the compilation environment for C++ is based so closely on that of C.
Converting my comments to answer your follow-up question:
How does the compiler find the .cpp file with the code in it
It doesn't, at least not at the time it compiles the code that used the header file. The functions y...
How to remove convexity defects in a Sudoku square?
...by dividing each pixel with the result of a closing operation:
src = ColorConvert[Import["http://davemark.com/images/sudoku.jpg"], "Grayscale"];
white = Closing[src, DiskMatrix[5]];
srcAdjusted = Image[ImageData[src]/ImageData[white]]
The next step is to find the sudoku area, so I can ignore (m...
MyISAM versus InnoDB [closed]
...ns of MySQL. Not that a MyISAM table that uses FULLTEXT indexing cannot be converted to an InnoDB table.
Conclusion
In conclusion, InnoDB should be your default storage engine of choice. Choose MyISAM or other data types when they serve a specific need.
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