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Differences between std::make_unique and std::unique_ptr with new
... unique_ptr<U>(new U())); // unsafe*
The addition of make_unique finally means we can tell people to 'never' use new rather than the previous rule to "'never' use new except when you make a unique_ptr".
There's also a third reason:
make_unique does not require redundant type usage. unique...
How to save an activity state using save instance state?
..."MyString", "Welcome back to Android");
// etc.
}
The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to onCreate() and also onRestoreInstanceState() where you would then extract the values from activity like this:
@Override
public void onRestoreI...
Handler vs AsyncTask vs Thread [closed]
...so supports reporting progress of the running tasks.
And a Thread is basically the core element of multithreading which a developer can use with the following disadvantage:
If you use Java threads you have to handle the following requirements
in your own code:
Synchronization with the...
How can I analyze Python code to identify problematic areas?
...8 and a bunch of plugins for regular checks and pre-commit hook. I'd actually recommend https://flakehell.readthedocs.io/config.html these days though, as it's execution model is much more robust and configurable.
– DylanYoung
Jul 7 at 18:39
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Add a CSS border on hover without moving the element [duplicate]
...ing when the thick border is applied. codepen
– aleph_one
Mar 18 at 18:36
add a comment
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What's the difference between TRUNCATE and DELETE in SQL
...nces highlighted below.
General Overview
If you want to quickly delete all of the rows from a table, and you're really sure that you want to do it, and you do not have foreign keys against the tables, then a TRUNCATE is probably going to be faster than a DELETE.
Various system-specific issues h...
Error: Can't set headers after they are sent to the client
...) {
if (err) {
res.send(err);
} else {
User.findOneAndUpdate({ _id: req.user._id }, { $push: { article: doc._id } })
.exec(function(err, doc2) {
if (err) res.send(err);
else res.json(doc2); // Will be called second.
})
res.json(doc1); // Will be ...
Which Architecture patterns are used on Android? [closed]
I'm doing a small research of mobile platforms and I would like to know which design patterns are used in Android?
12 Answe...
How to check what user php is running as?
...
If available you can probe the current user account with posix_geteuid and then get the user name with posix_getpwuid.
$username = posix_getpwuid(posix_geteuid())['name'];
If you are running in safe mode however (which is often the case when exec is disabled), then it's unlikely tha...
Indenting #defines
I know that #define s, etc. are normally never indented. Why?
8 Answers
8
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