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Combine two columns of text in pandas dataframe
...arter"]
If one (or both) of the columns are not string typed, you should convert it (them) first,
df["period"] = df["Year"].astype(str) + df["quarter"]
Beware of NaNs when doing this!
If you need to join multiple string columns, you can use agg:
df['period'] = df[['Year', 'quarter', ...]].a...
How can I use a C++ library from node.js?
...that returns something like a JavaScript array and have swig automatically convert it for you.
– George
Mar 26 '16 at 3:12
5
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How do I work around JavaScript's parseInt octal behavior?
...
This whole question is about alternatives to parseInt for converting strings to integers. Thus: always.
– Grodriguez
Oct 25 '14 at 9:55
add a comment
...
Android ListView headers
...ion.
Android will then take care of passing you the right type of View in convertView automatically.
Here what the result of the code below looks like:
First we have an interface that our two list item types will implement
public interface Item {
public int getViewType();
public Vie...
How to round to 2 decimals with Python?
...etting a lot of decimals in the output of this code (Fahrenheit to Celsius converter).
16 Answers
...
How to write a simple Html.DropDownListFor()?
... { 6, "Eggs Benedict"}
};
}
}
In the View convert it to a list for display
@Html.DropDownListFor(m => m.Egg.Keys,
new SelectList(
Model.Egg,
"Key",
"...
How can I find the number of days between two Date objects in Ruby?
... will have a 1 concatenated to the end. yikes! you may want to use to_i to convert the result to an integer
– jwal
Jan 24 '12 at 18:07
9
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Play audio from a stream using C#
... seamlessly. Your code would have to take the compressed audio stream and convert it to small chunks of WAV audio on the fly; this part would be really difficult - all the libraries and components I've ever seen do MP3-to-WAV conversion an entire file at a time. Probably your only realistic chance...
What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
...wer above, after reading an example from Android-er I found you can easily convert your preference activity into a preference fragment. If you have the following activity:
public class MyPreferenceActivity extends PreferenceActivity
{
@Override
protected void onCreate(final Bundle savedInst...
Print multiple arguments in Python
...
#Normal string concatenation
print("sum of", a , "and" , b , "is" , c)
#convert variable into str
print("sum of " + str(a) + " and " + str(b) + " is " + str(c))
# if you want to print in tuple way
print("Sum of %s and %s is %s: " %(a,b,c))
#New style string formatting
print("sum of {} and {}...