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push_back vs emplace_back
...lue_type it takes a variadic list of arguments, so that means that you can now perfectly forward the arguments and construct directly an object into a container without a temporary at all.
That's useful because no matter how much cleverness RVO and move semantic bring to the table there is still c...
Mockito: InvalidUseOfMatchersException
...
I had the same problem for a long time now, I often needed to mix Matchers and values and I never managed to do that with Mockito.... until recently !
I put the solution here hoping it will help someone even if this post is quite old.
It is clearly not possible t...
Aborting a stash pop in Git
...apply:
git merge-recursive stash@{0}: -- $(git write-tree) stash@{0}^1
Now you will be left with just the non-stash changes. They will be in the index. You can use git reset to unstage your changes if you like.
Given that your original git stash apply failed I assume the reverse might also fa...
How do I check if an element is really visible with JavaScript? [duplicate]
...
I don't know how much of this is supported in older or not-so-modern browsers, but I'm using something like this (without the neeed for any libraries):
function visible(element) {
if (element.offsetWidth === 0 || element.offsetHeig...
Converting datetime.date to UTC timestamp in Python
...eturn (td.microseconds + (td.seconds + td.days * 86400) * 10**6) / 10**6
now = datetime.utcnow()
print now
print totimestamp(now)
Beware of floating-point issues.
Output
2012-01-08 15:34:10.022403
1326036850.02
How to convert an aware datetime object to POSIX timestamp
assert dt.tzinfo is n...
How do I pass a variable by reference?
...ight, but if you rebind the reference in the method, the outer scope will know nothing about it, and after you're done, the outer reference will still point at the original object.
If you pass an immutable object to a method, you still can't rebind the outer reference, and you can't even mutate the...
passport.js RESTful auth
...r example) that use the web service at https://example.com/api but do not know about the web server at https://example.com.
Note that I'm using secure HTTP. This is in my opinion a must for any service that is available in the open, since sensitive information like passwords and authorization toke...
Android Studio says “cannot resolve symbol” but project compiles
...studio to load everything.
It will give you some errors, ignore those.
Now go to your java file and android studio will suggest you import
import android.support.v4.app.FragmentActivity;
Import it, then go back to Open Module Settings and change the compile sdk version back to what it was...
How to check status of PostgreSQL server Mac OS X
...o get them to take effect, remember to source it like so:
$ . ~/.bashrc
Now, try it and you should get something like this:
$ show-pg-status
pg_ctl: server is running (PID: 11030)
/usr/local/Cellar/postgresql/9.2.4/bin/postgres
...
TreeMap sort by value
...);
sortedEntries.addAll(map.entrySet());
return sortedEntries;
}
Now you can do the following:
Map<String,Integer> map = new TreeMap<String,Integer>();
map.put("A", 3);
map.put("B", 2);
map.put("C", 1);
System.out.println(map);
// prints "{A=3, B=2,...