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Django optional url parameters
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@Yuji'Tomita'Tomita I know, so the answer to eugene's question is unfortunately, no we can't sanely have multiple views with the same name, even if we're implementing them as a way to get optional parameters.
– nnyby
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Do I need to store the salt with bcrypt?
...The remaining characters represented the hash value. The checker function knows this, and pulls the hash apart to get the salt back out.
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Order of items in classes: Fields, Properties, Constructors, Methods
...mespaces first. Visual Studio's "Organize Usings" command used this order. Now usings are just ordered alphabetically, with no special treatment given to System namespaces. The result just feels simpler and cleaner.
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Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
...contrast, std::swap(a, b) would exchange their contents (so b's size would now be whatever a's had been before). You are perhaps thinking of a move operation (as occurs in C++11, but not in an ordinary assignment like this). Such a move would leave b in an, ahem, "interesting" state - see stackoverf...
What is the difference between `after_create` and `after_save` and when to use which?
... after after destroying the record? Or in the ops case, send an email to a now deleted user? Be careful with using after_commit
– rmcsharry
Jul 1 '19 at 15:33
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javac : command not found
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I don't know exactly what yum install java will actually install. But to check for javac existence do:
> updatedb
> locate javac
preferably as root. If it's not there you've probably only installed the Java runtime (JRE) and ...
Undefined reference to static constexpr char[]
...in my class. GCC complained and told me I should use constexpr , although now it's telling me it's an undefined reference. If I make the array a non-member then it compiles. What is going on?
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Cache Invalidation — Is there a General Solution?
...the 'rules' of the system as a result of the combined behaviour.
If you know that a always has validity if b does then you can arrange your cache like so (pseudocode):
private map<b,map<a,c>> cache //
private func realFunction // (a,b) -> c
get(a, b)
{
c result;
map&l...
what is the function of webpages:Enabled in MVC 3 web.config
... Views by default, but if i add this setting and set it to false, they are now parsed and attempted to be viewed.
– Brunis
Jan 4 '19 at 14:34
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What is the difference between dict.items() and dict.iteritems() in Python2?
...or backwards compatibility.
One of Python 3’s changes is that items() now return iterators, and a list is never fully built. The iteritems() method is also gone, since items() in Python 3 works like viewitems() in Python 2.7.
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