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Linear Regression and group by in R
...ng the results of each regression to a vector. That does not seem very R-like, however. In SAS I would do a 'by' statement and in SQL I would do a 'group by'. What's the R way of doing this?
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How can I extract all values from a dictionary in Python?
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If you only need the dictionary keys 1, 2, and 3 use: your_dict.keys().
If you only need the dictionary values -0.3246, -0.9185, and -3985 use: your_dict.values().
If you want both keys and values use: your_dict.items() which returns a list of tuples [(ke...
Converting timestamp to time ago in PHP e.g 1 day ago, 2 days ago…
...timestamp of the format 2009-09-12 20:57:19 and turn it into something like 3 minutes ago with PHP.
30 Answers
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How do I include negative decimal numbers in this regular expression?
... match negative numbers as well by this regular expression? This regex works fine with positive values, but I want it to also allow negative values e.g. -10, -125.5 etc.
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How do you create nested dict in Python?
...>> d = {}
>>> d['dict1'] = {}
>>> d['dict1']['innerkey'] = 'value'
>>> d
{'dict1': {'innerkey': 'value'}}
You can also use a defaultdict from the collections package to facilitate creating nested dictionaries.
>>> import collections
>>> d = colle...
How to pad zeroes to a string?
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Harley HolcombeHarley Holcombe
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Iterating a JavaScript object's properties using jQuery
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Tim BütheTim Büthe
57.2k1515 gold badges7979 silver badges123123 bronze badges
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How to escape braces (curly brackets) in a format string in .NET
How can brackets be escaped in using string.Format .
10 Answers
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List all indexes on ElasticSearch server?
I would like to list all indexes present on an ElasticSearch server. I tried this:
22 Answers
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Fastest way to check if a string matches a regexp in ruby?
What is the fastest way to check if a string matches a regular expression in Ruby?
7 Answers
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