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Entity Framework: table without primary key
... In this sort of 'manual mapping' case, I found that specifying a custom key as you show is effective; additionally, if you don't have the benefit of a composite key (as shown in this answer) you can tag a modelBuilder.Entity<T>() chain-call with .HasDatabaseGeneratedOption(DatabaseGe...
How to use the “number_to_currency” helper method in the model rather than view?
...n’t violate MVC, as they reside in the view layer, replacing traditional custom Rails helpers and logic-filled views.
Explicitly include ActionView::Helpers::NumberHelper in JobsHelper instead of depending on Rails to have magically loaded it for you. This is still not great, as you shouldn’t ac...
Do Facebook Oauth 2.0 Access Tokens Expire?
...re expiration of the access token Facebook will notify or you can get your custom notification functionality fetching the expiration value from the Facebook Api..
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DirectX SDK (June 2010) Installation Problems: Error Code S1023
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If you customize the installation, you can refrain from installing the redistributable. Thus, you can keep the newer one when installing the SDK. Alternatively, you could just uninstall it as suggested and reinstall it after.
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What's the best way to set a single pixel in an HTML5 canvas?
...e entire canvas; this is about 100× slower than other options.
creating a custom image using a data url and using drawImage() to show it:
var img = new Image;
img.src = "data:image/png;base64," + myPNGEncoder(r,g,b,a);
// Writing the PNGEncoder is left as an exercise for the reader
creating anoth...
How to execute ipdb.set_trace() at will while running pytest tests
...on errors.
--pdbcls=modulename:classname
start a custom interactive Python debugger on errors.
For example:
--pdbcls=IPython.terminal.debugger:TerminalPdb
The difference is just that TerminalPdb seems to throw erros, but Pdb...
Performing Breadth First Search recursively
...o where you're not allowed any heap space for some reason [some really bad custom memory manager? some bizarre runtime/OS issues?] while you still have access to the stack...)
Breadth-first traversal traditionally uses a queue, not a stack. The nature of a queue and a stack are pretty much opposit...
Fastest Way of Inserting in Entity Framework
... this is a commercial product, not free of charge
It uses SqlBulkCopy and custom datareader to get max performance. As a result it is over 20 times faster than using regular insert or AddRange
usage is extremely simple
context.BulkInsert(hugeAmountOfEntities);
...
nodeJs callbacks simple example
... this
var usingItNow = function(callback) {
var myError = new Error('My custom error!');
callback(myError, 'get it?'); // I send my error as the first argument.
};
The final usage is exactly the same as in above:
usingItNow(myCallback);
The only difference in behavior would be contingent ...
Git on Windows: How do you set up a mergetool?
...l git config, i.e. valid for all git projects not just the current one
the custom tool config value resides in "mergetool.[tool].cmd", not "merge.[tool].cmd" (silly me, spent an hour troubleshooting why git kept complaining about non-existing tool)
added double quotes for all file names so that file...