大约有 47,000 项符合查询结果（耗时：0.0828秒） [XML]
Checking to see if a DateTime variable has had a value assigned
...pile-time you can tell that it isn't definitely assigned by trying to read from it :)
I suspect you really want Nullable<DateTime> (or DateTime? with the C# syntactic sugar) - make it null to start with and then assign a normal DateTime value (which will be converted appropriately). Then you ...
Can someone explain this 'double negative' trick? [duplicate]
...result back to the boolean representation of its original logical value.
From these docs for the Logical NOT operator:
Returns false if its single operand can be converted to true; otherwise, returns true.
So if getContext gives you a "falsey" value, the !! will make it return the boolean v...
Can I zip more than two lists together in Scala?
...ses (Tuple1, Tuple2, Tuple3, Tuple4,...,Tuple22) while they do all inherit from the Product trait, that trait doesn't carry enough information to actually use the data values from the different sizes of tuples if they could all be returned by the same function. (And scala's generics aren't powerful ...
Why is “while ( !feof (file) )” always wrong?
...n point", if you will.)
EOF
Now we get to EOF. EOF is the response you get from an attempted I/O operation. It means that you were trying to read or write something, but when doing so you failed to read or write any data, and instead the end of the input or output was encountered. This is true for e...
Getting A File's Mime Type In Java
I was just wondering how most people fetch a mime type from a file in Java? So far I've tried two utils: JMimeMagic & Mime-Util .
...
ASP.NET MVC Ajax Error handling
...answers are good for me. Surprisingly the solution is much simpler. Return from controller:
return new HttpStatusCodeResult(HttpStatusCode.BadRequest, e.Response.ReasonPhrase);
And handle it as standard HTTP error on client as you like.
...
How to detect the physical connected state of a network cable/connector?
...
The errors about directories from grep can be ignored with: grep -s "" eth0/*
– mrtumnus
Jul 25 '18 at 0:37
...
How to get the separate digits of an int number?
...s.add(num % 10);
}
If you would like to maintain the order of the digits from least significant (index[0]) to most significant (index[n]), the following updated getDigits() is what you need:
/**
* split an integer into its individual digits
* NOTE: digits order is maintained - i.e. Least signif...
How can I interrupt a ServerSocket accept() method?
...
You can call close() from another thread, and the accept() call will throw a SocketException.
share
|
improve this answer
|
...
What is the purpose of the “role” attribute in HTML?
...the unusual HTML client, the attribute needs to be set to one of the roles from the spec I linked. If you make up your own, this 'future' functionality can't work - a comment would be better.
Practicalities here: http://www.accessibleculture.org/articles/2011/04/html5-aria-2011/
...