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How can I combine hashes in Perl?
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168
Quick Answer (TL;DR)
%hash1 = (%hash1, %hash2)
## or else ...
@hash1{keys %hash...
Summarizing multiple columns with dplyr? [duplicate]
...;int> <dbl> <dbl> <dbl> <dbl>
#> 1 1 3.08 2.98 2.98 2.91
#> 2 2 3.03 3.04 2.97 2.87
#> 3 3 2.85 2.95 2.95 3.06
If you want to summarize only certain columns, use summarise_at or summarise_if functions.
Alternatively, the purrrlyr package p...
“Unicode Error ”unicodeescape" codec can't decode bytes… Cannot open text files in Python 3 [duplica
..., on a windows 7 machines. Russian is the default system language, and utf-8 is the default encoding.
10 Answers
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UI Terminology: Logon vs Login [closed]
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286
Since you're looking for correctness,
login, logout, logon, and logoff are all nouns:
"Pleas...
How to rename items in values() in Django?
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From django>=1.8 you can use annotate and F object
from django.db.models import F
MyModel.objects.annotate(renamed_value=F('cryptic_value_name')).values('renamed_value')
Also extra() is going to be deprecated, from the django docs:
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Resharper- Find all unused classes
...ulrichbulrichb
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41
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How do I check the difference, in seconds, between two dates?
...30,23,59,59)
b = dt.datetime(2013,12,31,23,59,59)
(b-a).total_seconds()
86400.0
#note that seconds doesn't give you what you want:
(b-a).seconds
0
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inserting characters at the start and end of a string
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answered Apr 8 '12 at 0:47
Mark ByersMark Byers
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298
<% %> - is for inline code (especially logic flow)
<%$ %> - is for evaluating expre...
Inner class within Interface
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edited Mar 8 '10 at 11:30
answered Mar 8 '10 at 11:21
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