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Detect if a NumPy array contains at least one non-numeric value?

I need to write a function which will detect if the input contains at least one value which is non-numeric. If a non-numeric value is found I will raise an error (because the calculation should only return a numeric value). The number of dimensions of the input array is not known in advance - the fu...
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How to sum a variable by group

I have a data frame with two columns. First column contains categories such as "First", "Second", "Third", and the second column has numbers that represent the number of times I saw the specific groups from "Category". ...
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Django - filtering on foreign key properties

I'm trying to filter a table in Django based on the value of a particular field of a ForeignKey . 3 Answers ...
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fork() branches more than expected?

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horizontal line and right way to code it in html, css

I need to draw a horizontal line after some block, and I have three ways to do it: 10 Answers ...
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Can I click a button programmatically for a predefined intent?

I need the button click of the intent ACTION_SEND. Here there is no need of displaying UI. Can I get the "Send" button click from the MMS-SMSProvider in Android? ...
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Hibernate - Batch update returned unexpected row count from update: 0 actual row count: 0 expected:

I get following hibernate error. I am able to identify the function which causes the issue. Unfortunately there are several DB calls in the function. I am unable to find the line which causes the issue since hibernate flush the session at the end of the transaction. The below mentioned hibernate err...
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Splitting a string into chunks of a certain size

Suppose I had a string: 36 Answers 36 ...
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Set a persistent environment variable from cmd.exe

I have to set environment variables on different windows machines, but I don't want to be bothered changing them manually by getting on the properties screen of "My Computer" ...
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What does “javascript:void(0)” mean?

I've seen such href s many times, but I don't know what exactly that means. 14 Answers ...