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Better way to check variable for null or empty string?
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Beware false negatives from the trim() function — it performs a cast-to-string before trimming, and thus will return e.g. "Array" if you pass it an empty array. That may not be an issue, depending on how you process your data, but with the code ...
NHibernate ISession Flush: Where and when to use it, and why?
... using statement or manage the lifecycle of your ISession somewhere else.
From the documentation:
From time to time the ISession will execute the SQL statements needed to synchronize the ADO.NET connection's state with the state of objects held in memory. This process, flush, occurs by default at ...
What is Normalisation (or Normalization)?
...r, leading to data corruption.
There is a number of normalization levels from 1. normal form through 5. normal form. Each normal form describes how to get rid of some specific problem, usually related to redundancy.
Some typical normalization errors:
(1) Having more than one value in a cell. Exa...
What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
...lieve I have found as good an explanation as we will find without somebody from the .NET JIT team answering.
UPDATE
I looked a little deeper, and I believe I have found the source of the issue. It appears to be caused by a combination of a bug in the JIT type-initialization logic, and a change in...
Client-server synchronization pattern / algorithm?
...because of a bug. In this case, the client needs to get the current state from the server without going through the deltas. This is a copy from master to detail, deltas and performance be damned. It's a one-time thing; the client is broken; don't try to optimize this, just implement a reliable co...
Why is address zero used for the null pointer?
...memory address zero was special and had hardware protection against access from running software (in some cases it was the start of the reset vector, and modifying it could prevent the CPU from resetting or starting up). Programmers used this hardware protection as a form of error detection in thei...
Is the size of C “int” 2 bytes or 4 bytes?
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sizeof(int) can be any value from 1. A byte is not required to be 8 bits and some machines don't have a 8 bit addressable unit (which basically is the definition of a byte in the standard). The answer is not correct without further information.
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scp with port number specified
I'm trying to scp a file from a remote server to my local machine. Only port 80 is accessible.
11 Answers
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How do I check if a given string is a legal/valid file name under Windows?
...e [a-zA-Z0-9_]+ but it doesn't include many national-specific characters from various languages (e.g. umlauts and so on). What is the best way to do such a check?
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How to return multiple lines JSX in another return statement in React?
...menu code into a single component "anchored" at ul than to shoehorn in lis from multiple sources. I think it made also the mental model for the UI a little cleaner.
– ruffin
Mar 24 '17 at 17:43
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