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Transactions in .net
...pitfalls to look out for etc. All that commit and rollback stuff. I'm just starting a project where I might need to do some transactions while inserting data into the DB. Any responses or links for even basic stuff about transactions are welcome.
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Javascript reduce on array of objects
... .reduce((total, thing) => total + thing.age, 0);
Now we're giving a starting value to the aggregator. The starting value should be the type that you expect the aggregator to be (the type you expect to come out as the final value), in the vast majority of cases.
While you aren't forced to do t...
Why is creating a new process more expensive on Windows than Linux?
...uddenly rediscover the benefits of multiprocessing and begin to frequently start up and teardown processes...
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Why does running the Flask dev server run itself twice?
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The Werkzeug reloader spawns a child process so that it can restart that process each time your code changes. Werkzeug is the library that supplies Flask with the development server when you call app.run().
See the restart_with_reloader() function code; your script is run again with su...
How to implement an STL-style iterator and avoid common pitfalls?
...rial on implementing iterators for a linked list. Could you use that as a starting point for building a random-access iterator over your container?
If nothing else, you can take a look at the member functions and typedefs provided by iterator_facade and use it as a starting point for building your...
Using an ORM or plain SQL? [closed]
...e how I distinguish DAL from ORM:
A DAL is what you write yourself, maybe starting from a class that simply encapsulates a table and maps its fields to properties. An ORM is code you don't write or abstraction mechanisms inferred from other properties of your dbms schema, mostly PKs and FKs. (This ...
C# Events and Thread Safety
... delegate has 1000 entries. It's perfectly possible that the action at the start of the list will have executed before another thread unsubscribes a handler near the end of the list. However, that handler will still be executed because it'll be a new list. (Delegates are immutable.) As far as I can ...
Is it expensive to use try-catch blocks even if an exception is never thrown?
...duration;
do {
i = nextI;
long start = System.nanoTime();
run(i);
duration = System.nanoTime() - start;
nextI = (i << 1) | 1;
} while (duration < 100000000 && nextI > 0);
...
Fastest exit strategy for a Panic Button in Crisis/Abuse Websites? [closed]
...Google tab so that no one was the wiser. It worked...sort of. Until people started to question why I was staring at the Google search screen all day.
I've since started opening a tab with various work projects in different states. Usually, stuff I'm working on anyways in between browsing. So, now I'...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
... be sent back and forth.
Typically, HTTP servers are configured to log the start and completion of every HTTP request taking up disk and CPU time. It will become standard to log the start and completion of WebSockets data, but while the WebSockets connection doing duplex transfer there won't be any ...