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Getting the count of unique values in a column in bash
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153
To see a frequency count for column two (for example):
awk -F '\t' '{print $2}' * | sort | uniq...
Saving enum from select in Rails 4.1
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edited Dec 18 '16 at 21:32
Ahmed Fahmy
46844 silver badges1010 bronze badges
answered May 15 '14 at 19...
How to take the first N items from a generator or list in Python? [duplicate]
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lunixbochslunixbochs
17.8k22 gold badges3232 silver badges4444 bronze badges
53
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Disable ALL CAPS menu items in Visual Studio 2013
In Visual Studio 2013, Microsoft again presents the menu in UPPERCASE as the default.
6 Answers
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What is std::move(), and when should it be used?
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305
Wikipedia Page on C++11 R-value references and move constructors
In C++11, in addition to co...
Hidden Features of MySQL
...s will depend on the query complexity and available resources, but 4Mb and 32Mb, respectively are recommended starting points.
Note: These are "per connection" values, among read_buffer_size, read_rnd_buffer_size and some others, meaning that this value might be needed for each connection. So, cons...
Dynamically select data frame columns using $ and a character value
... a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. Sec...
How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?
...direct getter available.
System.out.printf("%d-%02d-%02d %02d:%02d:%02d.%03d", year, month, day, hour, minute, second, millis);
Or, when you're not on Java 8 yet, make use of java.util.Calendar.
Calendar now = Calendar.getInstance();
int year = now.get(Calendar.YEAR);
int month = now.get(Calendar....
Use 'import module' or 'from module import'?
...he namespace.
– Christian Witts
Apr 3 '09 at 6:49
23
cluttering the namespace is not the most pro...
ASP.NET MVC Razor pass model to layout
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answered Nov 11 '10 at 14:31
Mattias JakobssonMattias Jakobsson
7,94922 gold badges3131 silver badges4141 bronze badges
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