大约有 48,000 项符合查询结果（耗时：0.0681秒） [XML]
ActiveRecord: size vs count
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edited Jul 10 '12 at 22:15
Jo Liss
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List of installed gems?
... Gem::Requirement.default)
specs = Gem.source_index.search(dep)
puts specs[0..5].map{ |s| "#{s.name} #{s.version}" }
# >> Platform 0.4.0
# >> abstract 1.0.0
# >> actionmailer 3.0.5
# >> actionpack 3.0.5
# >> activemodel 3.0.5
# >> activerecord 3.0.5
Here's an ...
How do I access the host machine from the guest machine? [closed]
...or example, if your IP address is 192.168.78.128, use http://192.168.78.1:3000.
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Passing route control with optional parameter after root in express?
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190
That would work depending on what client.get does when passed undefined as its first parameter.
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Boolean literals in PowerShell
...ts are true, for example. null, empty strings, empty arrays and the number 0 are false.
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How to use arguments from previous command?
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By the way, you could have put the echo on the line by selecting argument 0:
Press Alt-0 Alt-Ctrl-y
Edit:
To answer the question you added to your original:
You can press Alt-0 then repeatedly press Alt-. to step through the previous commands (arg 0). Similarly Alt-- then repeating Alt-. would ...
How do I make a transparent canvas in html5?
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edited Apr 16 '14 at 1:20
Lee Taylor
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List comprehension vs map
... map when using exactly the same function:
$ python -mtimeit -s'xs=range(10)' 'map(hex, xs)'
100000 loops, best of 3: 4.86 usec per loop
$ python -mtimeit -s'xs=range(10)' '[hex(x) for x in xs]'
100000 loops, best of 3: 5.58 usec per loop
An example of how performance comparison gets completely r...
What killed my process and why?
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answered Apr 7 '09 at 17:23
dwcdwc
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How do you validate a URL with a regular expression in Python?
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answered May 6 '09 at 1:09
S.LottS.Lott
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