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Plotting time in Python with Matplotlib
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You must first convert your timestamps to Python datetime objects (use datetime.strptime). Then use date2num to convert the dates to matplotlib format.
Plot the dates and values using plot_date:
dates = matplotlib.dates.date2num(list_of_d...
How to generate a random int in C?
Is there a function to generate a random int number in C? Or will I have to use a third party library?
27 Answers
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Variable length (Dynamic) Arrays in Java
I was wondering how to initialise an integer array such that it's size and values change through out the execution of my program, any suggestions?
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Jelly Bean DatePickerDialog — is there a way to cancel?
...n this sample, I use it inside a Fragment):
Bundle b = new Bundle();
b.putInt(DatePickerDialogFragment.YEAR, 2012);
b.putInt(DatePickerDialogFragment.MONTH, 6);
b.putInt(DatePickerDialogFragment.DATE, 17);
DialogFragment picker = new DatePickerDialogFragment();
picker.setArguments(b);
picker.show(g...
SQL Data Reader - handling Null column values
... reliable way to detect and handle this situation.
I wrapped those things into extension methods and tend to return a default value if the column is indeed null:
public static string SafeGetString(this SqlDataReader reader, int colIndex)
{
if(!reader.IsDBNull(colIndex))
return reader.Get...
How do I enter RGB values into Interface Builder?
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When you choose "Save for Web & Devices" from Photoshop, uncheck the "Convert to sRGB" box.
In Xcode, click the colorspace popup in the color picker and choose "Generic RGB", then enter the red, green and blue values from Photoshop, NOT THE HEX VALUE as this reverts back to the sRGB colors...
Using custom std::set comparator
I am trying to change the default order of the items in a set of integers to be lexicographic instead of numeric, and I can't get the following to compile with g++:
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Is it possible for git-merge to ignore line-ending differences?
...r merge respecting eol, KDiff3 is better than DiffMerge (which will always convert LF into CRLF)
# KDiff3 will display eol choices (if Windows: CRLF, if Unix LF)
"C:/Program Files/KDiff3/kdiff3.exe" -m "$base" "$alocal" "$remote" -o "$result"
else
#there is not always a common ancestor: ...
How to initialise memory with new operator in C++?
I'm just beginning to get into C++ and I want to pick up some good habits. If I have just allocated an array of type int with the new operator, how can I initialise them all to 0 without looping through them all myself? Should I just use memset ? Is there a “C++” way to do it?
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Union of dict objects in Python [duplicate]
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Why converting to list() ? def union2(dict1, dict2): return dict(dict1.items() + dict2.items())
– kinORnirvana
May 22 '17 at 14:48
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