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List comprehension in Ruby
...k.nil?
self.collect(&block).compact
end
end
some_array = [1, 2, 3, 4, 5, 6]
new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0}
puts new_array
Prints:
6
12
18
I would probably just do it the way you did though.
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How do I read / convert an InputStream into a String in Java?
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edited May 21 '18 at 13:09
Marko Zajc
14811 silver badge1313 bronze badges
answered Nov 21 '08 at 16...
Get current controller in view
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193
I have put this in my partial view:
@HttpContext.Current.Request.RequestContext.RouteData.Value...
Prevent direct access to a php include file
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34 Answers
34
Active
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How to get overall CPU usage (e.g. 57%) on Linux [closed]
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Mike Q
4,50411 gold badge3737 silver badges5151 bronze badges
answered Feb 10 '12 at 14:48
vimdudevimdude
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Check if a table exists in Rails
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304
In Rails 5 the API became explicit regarding tables/views, collectively data sources.
# Table...
Convert python datetime to epoch with strftime
...e.datetime(2012,04,01,0,0) - datetime.datetime(1970,1,1)).total_seconds()
1333238400.0
In Python 3.3+ you can use timestamp() instead:
>>> datetime.datetime(2012,4,1,0,0).timestamp()
1333234800.0
Why you should not use datetime.strftime('%s')
Python doesn't actually support %s as an...
How can I increment a char?
...ord('c') + 1
100
>>> chr(ord('c') + 1)
'd'
>>>
Python 3.x makes this more organized and interesting, due to its clear distinction between bytes and unicode. By default, a "string" is unicode, so the above works (ord receives Unicode chars and chr produces them).
But if you're i...
How to check the version before installing a package using apt-get?
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329
OK, I found it.
apt-cache policy <package name> will show the version details.
It also s...
Clicking the text to select corresponding radio button
... <p>What is my middle name?</p>
<br>
<input id="349" type="radio" value="1" name="question1">
<label for="349">Abe</label>
<br>
<input id="350" type="radio" value="2" name="question1">
<label for="350">Andrew</label>
&l...