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Numpy `logical_or` for more than two arguments
Numpy's logical_or function takes no more than two arrays to compare. How can I find the union of more than two arrays? (The same question could be asked with regard to Numpy's logical_and and obtaining the intersection of more than two arrays.)
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How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
I have a dataframe with ~300K rows and ~40 columns.
I want to find out if any rows contain null values - and put these 'null'-rows into a separate dataframe so that I could explore them easily.
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How do I parse JSON with Ruby on Rails? [duplicate]
I'm looking for a simple way to parse JSON, extract a value and write it into a database in Rails.
12 Answers
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Can I recover a branch after its deletion in Git?
...nch -d XYZ , is there a way to recover the branch? Is there a way to go back as if I didn't run the delete branch command?
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NSDate get year/month/day
...bit more information.
Despite its name, NSDate in and of itself simply marks a point in machine time, not a date. There's no correlation between the point in time specified by an NSDate and a year, month, or day. For that, you have to refer to a calendar. Any given point in time will return differe...
What parameters should I use in a Google Maps URL to go to a lat-lon?
I would like to produce a url for Google Maps that goes to a specific latitude and longitude. Now, I generate a url such as this:
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How to check if a service is running on Android?
How do I check if a background service is running?
31 Answers
31
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How do you check if a variable is an array in JavaScript? [duplicate]
I would like to check whether a variable is either an array or a single value in JavaScript.
23 Answers
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How do I read and parse an XML file in C#?
...dXml("<xml>something</xml>");
then find a node below it ie like this
XmlNode node = doc.DocumentElement.SelectSingleNode("/book/title");
or
foreach(XmlNode node in doc.DocumentElement.ChildNodes){
string text = node.InnerText; //or loop through its children as well
}
then read...
How to set the text color of TextView in code?
In XML, we can set a text color by the textColor attribute, like android:textColor="#FF0000" . But how do I change it by coding?
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