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Add column with constant value to pandas dataframe [duplicate]
...lumn is because df.index and the Index of your right-hand-side object are different. @zach shows the proper way to assign a new column of zeros. In general, pandas tries to do as much alignment of indices as possible. One downside is that when indices are not aligned you get NaN wherever they aren't...
Why does PHP 5.2+ disallow abstract static class methods?
... abstract method is that you can write code that calls the method without knowing what implementation it's going to be calling - and then provide different implementations on different child classes. But since PHP 5.2 offers no clean way to write a method of a parent class that calls a static method...
Get list of a class' instance methods
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This is great way to test if a class has polymorphed methods from a pseudo-Interface/Abstract base class without having to try and call the methods directly.
– Daniel Doezema
Apr 19 '13 at 13:03
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What does “WARN Could not determine content-length of response body.” mean and how to I get rid of i
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fyi, if the messages bother you, as a workaround you can use thin (add gem 'thin' to your gemfile, start your server using rails server thin). (oops, just noticed that @Scott Lowe already said this above.)
– ...
git remove merge commit from history
...t rebase --onto <sha of 1> <sha of 2> <blue branch>
And now the purple branch isn't in the commit log of blue at all and you have two separate branches again. You can then squash the purple independently and do whatever other manipulations you want without the merge commit in the...
How to save an image to localStorage and display it on the next page?
...mg.src = "data:image/png;base64," + dataImage;
Tested it in quite a few different browsers and versions, and it seems to work quite well.
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AngularJs $http.post() does not send data
...rl is called but on the server when I print $_POST - I get an empty array. If I print message in the console before adding it to the data - it shows the correct content.
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What is simplest way to read a file into String? [duplicate]
...uctors.
You can query the Scanner itself through the ioException() method if an IOException occurred or not. You may also want to explicitly close() the Scanner after you read the content, so perhaps storing the Scanner reference in a local variable is best.
See also
Java Tutorials - I/O Essenti...
How to log PostgreSQL queries?
...g at your new information, I'd say there may be a few other settings to verify:
make sure you have turned on the log_destination variable
make sure you turn on the logging_collector
also make sure that the log_directory directory already exists inside of the data directory, and that the postgres u...
Convert string to title case with JavaScript
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If the jim-bob --> Jim-Bob is your desire, you should probably do /\b\w+/g. Example: str.replace(/\b\w+/g,function(s){return s.charAt(0).toUpperCase() + s.substr(1).toLowerCase();});
– vol7ron
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