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Which kind of pointer do I use when?
...ovariant returns, non-owning pointing which can happen. They're not terrifically useful otherwise.
Array pointers: unique_ptr has a specialization for T[] which automatically calls delete[] on the result, so you can safely do unique_ptr<int[]> p(new int[42]); for example. shared_ptr you'd sti...
What is the purpose of setting a key in data.table?
...creasing order.
marks those columns as key columns by setting an attribute called sorted to DT.
The reordering is both fast (due to data.table's internal radix sorting) and memory efficient (only one extra column of type double is allocated).
When is setkey() required?
For grouping operations, s...
How do I detect what .NET Framework versions and service packs are installed?
...similar question was asked here , but it was specific to .NET 3.5. Specifically, I'm looking for the following:
13 Answers...
How to suppress specific MSBuild warning
...ing (e.g. MSB3253) when running MSBuild from command line? My build script calls msbuild.exe much the following way:
5 Answ...
PHP Error handling: die() Vs trigger_error() Vs throw Exception
...our application can fail and you want your code to recover across multiple call-levels.
trigger_error() lets you fine-grain error reporting (by using different levels of error messages) and you can hide those errors from end-users (using set_error_handler()) but still have them be displayed to you ...
How can I set the Sender's address in Jenkins?
...ications. Go to Manage jenkins, then System configuration and find section called E-mail Notification.
You can provide you email address in a form of Jenkins <foo@mycompany.com>.
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I want my android application to be only run in portrait mode?
...Coelho you can actually make a base class PortraitActivity and in onCreate call setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) All activities extending this won't rotate
– Twinone
Jun 6 '14 at 9:07
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How can Bash execute a command in a different directory context?
I have a common command that gets called from within very specific directories. There is only one executable sitting in /bin for this program, and the current working directory is very important for running it correctly. The script affects the files that live inside the directory it is run within.
...
Difference between fmt.Println() and println() in Go
...n -gcflags="-m" test.go
# command-line-arguments
./test.go:12:12: inlining call to fmt.Printf
./test.go:6:10: new(struct {}) does not escape
./test.go:7:10: new(struct {}) does not escape
./test.go:10:10: new(struct {}) escapes to heap
./test.go:11:10: new(struct {}) escapes to heap
./test.go:12:35:...
How do CDI and EJB compare? interact?
...pplications. In addition to this, CDI also exposes a very advanced feature called portable extensions, which is a kind of plug-in mechanism for vendors to provide extra functionality to Java EE that can be made available on all implementations (Glassfish, JBoss AS, Websphere, etc).
EJB3 beans were ...