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Differences between std::make_unique and std::unique_ptr with new
Does std::make_unique have any efficiency benefits like std::make_shared ?
4 Answers
...
How do you find the row count for all your tables in Postgres
...vy activity, but is generally a good estimate:
SELECT schemaname,relname,n_live_tup
FROM pg_stat_user_tables
ORDER BY n_live_tup DESC;
That can also show you how many rows are dead, which is itself an interesting number to monitor.
The third way is to note that the system ANALYZE command, ...
POSTing a @OneToMany sub-resource association in Spring Data REST
...ates the Comment, but does not create the row in the resolution table (POST_COMMENTS). Any suggestions on how to resolve?
– banncee
Oct 25 '15 at 14:45
...
How to pass object with NSNotificationCenter
...me("SomeNotificationName"),
object: nil)
}
@objc func someMethod(_ notification: Notification) {
let info0 = notification.userInfo?["key0"]
let info1 = notification.userInfo?["key1"]
}
Bonus (that you should definitely do!) :
Replace Notification.Name("SomeNotificationName") wit...
Setting JDK in Eclipse
...
I had to change my JAVA_HOME environment variable to the JDK's folder too, and the JRE was not enough.
– Noumenon
Sep 10 '15 at 0:57
...
WPF ToolBar: how to remove grip and overflow
....Dock="Top">
<ToolBar ToolBarTray.IsLocked="True" Loaded="ToolBar_Loaded">
<Menu ToolBar.OverflowMode="Never">
<MenuItem Header="File" />
<MenuItem Header="New" />
</Menu>
</ToolBar>
</ToolBarPanel>
And se...
Python: print a generator expression?
...an iterator, without the need to build an intermediate list:
>>> _ = map(sys.stdout.write, (x for x in string.letters if x in (y for y in "BigMan on campus")))
acgimnopsuBM
share
|
improv...
What do people find difficult about C pointers? [closed]
... understanding the machine architecture. See en.wikipedia.org/wiki/Pointer_(computing) and boredzo.org/pointers/#definition
– Robert Harvey
Oct 26 '10 at 20:01
...
How do I apply a perspective transform to a UIView?
...eTransform = CATransform3DRotate(rotationAndPerspectiveTransform, 45.0f * M_PI / 180.0f, 0.0f, 1.0f, 0.0f);
layer.transform = rotationAndPerspectiveTransform;
Swift 5.0
if let myView = self.subviews.first {
let layer = myView.layer
var rotationAndPerspectiveTransform = CATransform3DIdenti...
Default function arguments in Rust
...fn add(a: Option<i32>, b: Option<i32>) -> i32 {
a.unwrap_or(1) + b.unwrap_or(2)
}
This accomplishes the objective of having the default value and the function coded only once (instead of in every call), but is of course a whole lot more to type out. The function call will look ...