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How to implement the Android ActionBar back button?
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Selvin already posted the right answer. Here, the solution in pretty code:
public class ServicesViewActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstan...
Start ssh-agent on login
...nt;
fi
This version is especially nice since it will see if you've already started ssh-agent and, if it can't find it, will start it up and store the settings so that they'll be usable the next time you start up a shell.
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Return first match of Ruby regex
...ature documented in String#[]. Thanks for asking about the doc, because in reading it I found the capture argument – which lets you return a capture instead of the full match.
– slothbear
Jul 11 '14 at 13:02
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Adding a y-axis label to secondary y-axis in matplotlib
...with matplotlib: just pandas.
Tweaking the original example:
table = sql.read_frame(query,connection)
ax = table[0].plot(color=colors[0],ylim=(0,100))
ax2 = table[1].plot(secondary_y=True,color=colors[1], ax=ax)
ax.set_ylabel('Left axes label')
ax2.set_ylabel('Right axes label')
Basically, whe...
How to get a index value from foreach loop in jstl
...op will variable which will hold the index of lop.
It can use for use to read for Zeor base index or 1 one base index.
${loop.count}` it will give 1 starting base index.
${loop.index} it will give 0 base index as normal Index of array start from 0.
For Example :
<c:forEach var="currentI...
How to tell if rails is in production?
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I found it much easier to just restart the rails server and read the second line on the command line:
Running rails s -e production outputs:
=> Booting Puma
=> Rails 4.2.4 application starting in `production` on http://localhost:3000
Had Webrick in the example but some peopl...
Check if a string is a date value
...try to reinvent the wheel, write a regular expression (but please actually read ISO 8601 and RFC 3339 before you do it) or call buit-in constructors with random data to parse error messages like 'Invalid Date' (Are you sure this message is exactly the same on all platforms? In all locales? In the fu...
How to get a function name as a string?
...; time.time.__name__
'time'
Also the double underscores indicate to the reader this is a special attribute. As a bonus, classes and modules have a __name__ attribute too, so you only have remember one special name.
share
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What is mattr_accessor in a Rails module?
...with both mattr_accessor (Module accessor) and cattr_accessor (as well as _reader/_writer versions). As Ruby's attr_accessor generates getter/setter methods for instances, cattr/mattr_accessor provide getter/setter methods at the class or module level. Thus:
module Config
mattr_accessor :hostna...
Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
I'm reading some automated weather data from the web. The observations occur every 5 minutes and are compiled into monthly files for each weather station. Once I'm done parsing a file, the DataFrame looks something like this:
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