大约有 46,000 项符合查询结果（耗时：0.0624秒） [XML]
Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...mentation has to say:
By default the heap dump is created in
a file called java_pid.hprof in the
working directory of the VM, as in the
example above. You can specify an
alternative file name or directory
with the -XX:HeapDumpPath= option. For
example -XX:HeapDumpPath=/disk2/dumps
...
C++11 range based loop: get item by value or reference to const
...
@racarate: I cannot comment on the overall speed, and I think nobody can, without profiling it first. Frankly, I wont base my choice on the speed, rather the clarity of the code. If I want immutability, I'd use const for sure. However, whether it would be auto co...
How to enable C++11 in Qt Creator?
...The problem was, I wasn't able to delete your duplicate/incomplete answer, all I could do was to downvote it. Now that you have edited it to make it more presentable, I am happy with just the downvote.
– nurettin
Aug 21 '14 at 12:55
...
Most efficient way to concatenate strings?
...o" + var1 + "bar" + var2 + "hello" + var3 + "world", the compiler automatically turns that into a string.concat call, which is as efficient as it gets. This answer is incorrect, there are plenty of better answers to choose from
– csauve
Jan 12 '11 at 17:56
...
Calculating how many minutes there are between two times
...s', this will return only the minutes of timespan [0~59], to return sum of all minutes from this interval, just use 'span.TotalMinutes'.
share
|
improve this answer
|
follow
...
Split comma-separated strings in a column into separate rows
...solution,
and two additional variants of Jaap's data.table methods.
Overall 8 different methods were benchmarked on 6 different sizes of data frames using the microbenchmark package (see code below).
The sample data given by the OP consists only of 20 rows. To create larger data frames, these 20...
Inject service in app.config
...e into app.config, so that data can be retrieved before the controller is called. I tried it like this:
10 Answers
...
What is the difference between gravity and layout_gravity in Android?
...
Basically, everything with layout_ defines something that effects the elements outside.
– Triang3l
Jun 28 '13 at 10:26
...
Drawable image on a canvas
...setBounds(left, top, right, bottom);
d.draw(canvas);
This will work with all kinds of drawables, not only bitmaps. And it also means that you can re-use that same drawable again if only the size changes.
share
|
...
Why should the copy constructor accept its parameter by reference in C++?
... reference, it's by value. To do that you make a copy, and to do that you call the copy constructor. But to do that, we need to make a new value, so we call the copy constructor, and so on...
(You would have infinite recursion because "to make a copy, you need to make a copy".)
...