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datetime dtypes in pandas read_csv
I'm reading in a csv file with multiple datetime columns. I'd need to set the data types upon reading in the file, but datetimes appear to be a problem. For instance:
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Left-pad printf with spaces
How can I pad a string with spaces on the left when using printf?
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Concatenate two string literals
I am reading Accelerated C++ by Koenig. He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals).
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How to change a DIV padding without affecting the width/height ?
... a div that I want to specify a FIXED width and height for, and also a padding which can be changed without decreasing the original DIV width/height or increasing it, is there a CSS trick for that, or an alternative using padding?
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AngularJS - difference between pristine/dirty and touched/untouched
...S Developer Guide - Forms tell there are many styles and directives regarding forms and fields. For each one, a CSS class:
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Applying function with multiple arguments to create a new pandas column
I want to create a new column in a pandas data frame by applying a function to two existing columns. Following this answer I've been able to create a new column when I only need one column as an argument:
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Does the JVM prevent tail call optimizations?
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This post: Recursion or Iteration? might help.
In short, tail call optimization is hard to do in the JVM because of the security model and the need to always have a stack trace available. These requirements could in theory be supported, but it would probably require a new...
RSpec: describe, context, feature, scenario?
... alias for describe, so they are functionally equivalent. You can use them interchangeably, the only difference is how your spec file reads. There is no difference in test output for example. The RSpec book says:
"We tend to use describe() for things and context() for context".
Personally I li...
Django's SuspiciousOperation Invalid HTTP_HOST header
After upgrading to Django 1.5, I started getting errors like this:
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Why does this code segfault on 64-bit architecture but work fine on 32-bit?
I came across the following C puzzle:
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