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while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
...True is reassignable:
Python 2.7 (r27:82508, Jul 3 2010, 21:12:11)
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> True = 4
>>> True
4
In Python 3.x it truly becomes a keyword and a real constant:
Pyth...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
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4 Answers
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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
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147
Update
data.table v1.9.6+ now supports OP's original attempt and the following answer is no lon...
Android: TextView automatically truncate and replace last 3 char of String
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Mateus Gondim
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answered Nov 3 '09 at 13:28
NateNate
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HtmlString vs. MvcHtmlString
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HtmlString only exists in ASP.NET 4.
MvcHtmlString was a compatibility shim added to MVC 2 to support both .NET 3.5 and .NET 4. Now that MVC 3 is .NET 4 only, it's a fairly trivial subclass of HtmlString presumably for MVC 2->3 for source compatibility.
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How can I create a Set of Sets in Python?
...m the following list of lists:
t = [[], [1, 2], [5], [1, 2, 5], [1, 2, 3, 4], [1, 2, 3, 6]]
you can create your set in the following way:
t1 = set(frozenset(i) for i in t)
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Turn off CSRF token in rails 3
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Dorian
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answered Apr 14 '11 at 20:36
Mike LewisMike ...
Build vs new in Rails 3
...ion:
henrym:~/testapp$ rails c
Loading development environment (Rails 3.0.4)
r:001 > (some_firm = Firm.new).save # Create and save a new Firm
#=> true
r:002 > some_firm.clients # No clients yet
#=> []
r:003 > some_firm.clients.new # Create a new client
#=> #<C...
Grep regex NOT containing string
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beerbajaybeerbajay
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