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Is there a difference between copy initialization and direct initialization?
...ally created, called "temporary materialization", because A_factory_func() doesn't have a variable or reference that otherwise would require an object to exist).
As examples in our case, in the case of a1 and a2 special rules say that in such declarations, the result object of a prvalue initializer...
How to avoid using Select in Excel VBA
...
With ws
Set rng = .Range(.Cells(1,1), .Cells(2,10))
End With
If you do want to work with the ActiveSheet, for clarity it's best to be explicit. But take care, as some Worksheet methods change the active sheet.
Set rng = ActiveSheet.Range("A1")
Again, this refers to the active workbook. Un...
How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
... for performance.
Like all such performance optimisations you should only do it after extensive profiling to ensure the code really is in a bottleneck, and probably given the micro nature, that it is being run in a tight loop. Generally the Linux developers are pretty experienced so I would imagine...
How to read from a file or STDIN in Bash?
...the first parameter $1 otherwise from standard input.
while read line
do
echo "$line"
done < "${1:-/dev/stdin}"
The substitution ${1:-...} takes $1 if defined otherwise
the file name of the standard input of the own process is used.
...
How do you set the Content-Type header for an HttpClient request?
... "relativeAddress");
request.Content = new StringContent("{\"name\":\"John Doe\",\"age\":33}",
Encoding.UTF8,
"application/json");//CONTENT-TYPE header
client.SendAsync(request)
.ContinueWith(responseTask =>
{
...
How do malloc() and free() work?
... too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (or at least only in rare cases). The reason is that you will get gaps in your heap and thus it can happen, that you just finish off your 2 or 4 GB of virtual memory...
How do I apply CSS3 transition to all properties except background-position?
...SS transition to all properties apart from background-position.
I tried to do it this way:
6 Answers
...
Sending Arguments To Background Worker?
...gument: value); // the int will be boxed
and then
private void worker_DoWork(object sender, DoWorkEventArgs e)
{
int value = (int) e.Argument; // the 'argument' parameter resurfaces here
...
// and to transport a result back to the main thread
double result = 0.1 * value;
e....
How do you view ALL text from an ntext or nvarchar(max) in SSMS?
How do you view ALL text from an NTEXT or NVARCHAR(max) in SQL Server Management Studio? By default, it only seems to return the first few hundred characters (255?) but sometimes I just want a quick way of viewing the whole field, without having to write a program to do it. Even SSMS 2012 still has...
How to avoid explicit 'self' in Python?
...to useful properties, such as: you can't add members which accidentally shadow non-members and thereby break code.
One extreme example: you can write a class without any knowledge of what base classes it might have, and always know whether you are accessing a member or not:
class A(some_function()...