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What's the difference between session.Merge and session.SaveOrUpdate?
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This is from section 10.7. Automatic state detection of the Hibernate Reference Documentation:
saveOrUpdate() does the following:
if the object is already persistent in this session, do nothing
if another object associa...
PowerShell: Setting an environment variable for a single command only
...v:FOO='BAR'; .\myscript; Remove-Item Env:\FOO
Just summarized information from other answers (thank you folks) which don't contain pure one-liners for some reason.
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Is std::vector copying the objects with a push_back?
...e reference, then the argument is actually an lvalue and will not be moved from) - check my edit to the answer of "Karl Nicoll" which made that mistake initially
– M.M
Apr 16 '17 at 0:17
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When and why would you seal a class?
...he keyword sealed (or NotInheritable in VB) is used to protect a class from any inheritance chance (the class will be non-inheritable). I know that one feature of object-oriented programming is inheritance and I feel that the use of sealed goes against this feature, it stops inheritance.
Is ...
Best way to randomize an array with .NET
...rong. As noted in the MSDN documentation, you should use something derived from System.Security.Cryptography.RandomNumberGenerator if you're doing anything security-related. For example:
using System.Security.Cryptography;
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RNGCryptoServiceProvider rnd = new RNGCryptoServiceProvider();
string[] ...
Multiple Models in a single django ModelForm?
...am trying to create a profile edit form. So I need to include some fields from the User model and the UserProfile model. Currently I am using 2 forms like this
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Android ViewPager - Show preview of page on left and right
...hen we drag it to center - scale will increase to 1, and previous fragment from centre view will change scale to 0.8 when going out of screen?
– iamthevoid
Oct 16 '16 at 10:22
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Can I add extension methods to an existing static class?
...h. Should the "container" actually be responsible for interpreting itself from the configuration file? Normally I simply have ConfigurationSectionHandler and cast the output from ConfigurationManager to the appropriate class and don't bother with the wrapper.
– tvanfosson
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In Python, what happens when you import inside of a function? [duplicate]
...there is a name clash or other reason you don't want the module or symbols from the module available everywhere, you may only want to import it in a specific function. (Of course, there's always from my_module import my_function as f for those cases.)
In general practice, it's probably not that ben...
Why are primes important in cryptography?
... info on the latest work, I believe that was back in 2012, this article is from 2014 (m.phys.org/news/2014-11-largest-factored-quantum-device.html) Have we seen any public data from 2016? Not to exclude what might be classified. Although it can't run Shors Algorithm, D-Wave is now over 1000 qbits
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