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How to use hex color values
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This is my favorite implementation because of the way it handles the 3 cases. But I prefer the default: case to return nil, instead of white.
– Richard Venable
Mar 21 '16 at 13:54
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Calling virtual functions inside constructors
...constructor or Derived constructor. The implications are different (and to my likings more dangerous). If the base class constructor calls a method that is overriden in the derived class the call will actually be handled at the derived level calling a method on an unconstructed object, yielding unex...
Regex Named Groups in Java
It is my understanding that the java.regex package does not have support for named groups ( http://www.regular-expressions.info/named.html ) so can anyone point me towards a third-party library that does?
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float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
...ack for the broken support for inline-block.
display:inline-block;
This is my favourite option. It works well and consistently across all browsers, with a caveat for IE6/7, which support it for some elements. But see above for the hacky solution to work around this.
The other big caveat with inlin...
Rails ActionMailer - format sender and recipient name/email address
...recipients = "\"#{user.name}\" <#{user.email}>"
@from = "\"MyCompany\" <info@mycompany.com>"
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Can I implement an autonomous `self` member type in C++?
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@dyp For the purpose of my answer that won’t change anything. The error here isn’t in the trailing return type, it’s in the invocation.
– Konrad Rudolph
Jan 15 '14 at 17:18
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How do you unit test private methods?
...w PrivateObject( objectInstanceToBeWrapped );
// Retrieve a private field
MyReturnType accessiblePrivateField = (MyReturnType) accessor.GetField( "privateFieldName" );
// Call a private method
accessor.Invoke( "PrivateMethodName", new Object[] {/* ... */} );
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How to write a multidimensional array to a text file?
...that's not a primary concern, just pickle it.
To save it:
import pickle
my_data = {'a': [1, 2.0, 3, 4+6j],
'b': ('string', u'Unicode string'),
'c': None}
output = open('data.pkl', 'wb')
pickle.dump(my_data, output)
output.close()
To read it back:
import pprint, pickle
pk...
How to convert floats to human-readable fractions?
...ar after the question had been asked), I guess I don’t know anymore what my reasoning was back then. Most probably I was referring to this comment: stackoverflow.com/questions/95727/… OTOH It could also be that this answer has been merged from another question. Who can tell after all those years...
HTTP 401 - what's an appropriate WWW-Authenticate header value?
...c Authentication we return something like:
WWW-Authenticate: Basic realm="myRealm"
Whereas Basic is the scheme and the remainder is very much dependent on that scheme. In this case realm just provides the browser a literal that can be displayed to the user when prompting for the user id and passw...