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Determine if Python is running inside virtualenv
...s works for Python 3 stdlib venv and for recent virtualenv (since version 20). Older versions of virtualenv used sys.real_prefix instead of sys.base_prefix (and sys.real_prefix did not exist outside a virtual environment), and in Python 3.3 and earlier sys.base_prefix did not ever exist. So a fully ...
Error Code: 1005. Can't create table '…' (errno: 150)
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Error Code: 1005 -- there is a wrong primary key reference in your code
Usually it's due to a referenced foreign key field that does not exist. It might be you have a typo mistake, or check case it should be same, or there's a field-type...
HTTP headers in Websockets client API
...lcm5hbWU6cGFzc3dvcmQ=
I have tested basic auth in Chrome 55 and Firefox 50 and verified that the basic auth info is indeed negotiated with the server (this may not work in Safari).
Thanks to Dmitry Frank's for the basic auth answer
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How to prevent XSS with HTML/PHP?
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308
Basically you need to use the function htmlspecialchars() whenever you want to output something...
What's the difference between a proc and a lambda in Ruby?
...ed.
An example:
p = Proc.new {|a, b| puts a**2+b**2 } # => #<Proc:0x3c7d28@(irb):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined method `**' for nil:NilClass
p.call 1, 2, 3 # => 5
l = lambda {|a, b| puts a**2+b**2 } # => #<Proc:0x15016c@(irb):5 (lambda)>
l....
Does the APNS device token ever change, once created?
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edited Nov 27 '17 at 6:40
iosCurator
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answered J...
How to get ALL child controls of a Windows Forms form of a specific type (Button/Textbox)?
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answered Aug 6 '10 at 18:40
PsychoCoderPsychoCoder
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What does the question mark in Java generics' type parameter mean?
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230
? extends HasWord
means "A class/interface that extends HasWord." In other words, HasWord its...
How can I create an object and add attributes to it?
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answered May 13 '10 at 14:49
Alex MartelliAlex Martelli
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