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Difference between
...at you can only read from it and you'll get a T or subclass of T.
super
Now consider List <? super T>.
The wildcard declaration of List<? super Integer> foo3 means that any of these are legal assignments:
List<? super Integer> foo3 = new ArrayList<Integer>(); // Integer...
Repeat String - Javascript
...
This problem is a well-known / "classic" optimization issue for JavaScript, caused by the fact that JavaScript strings are "immutable" and addition by concatenation of even a single character to a string requires creation of, including memory alloca...
Practical uses of git reset --soft?
...the HEAD, and just the HEAD, two commits back!
git reset --soft HEAD@{2}
Now, we can resume Tomas's solution:
# Pretend that we just did an octopus merge with three heads:
echo $(git rev-parse projectA/master) > .git/MERGE_HEAD
echo $(git rev-parse projectB/master) >> .git/MERGE_HEAD
# ...
What is the (best) way to manage permissions for Docker shared volumes?
...un as follows:
docker run --volumes-from=graphitedata some/graphite
Ok, now that gives us our graphite container and associated data-only container with the correct user/group (note you could re-use the some/graphite container for the data container as well, overriding the entrypoing/cmd when run...
Effects of the extern keyword on C functions
...ar.c.
Here is foo.c
#include <stdio.h>
volatile unsigned int stop_now = 0;
extern void bar_function(void);
int main(void)
{
while (1) {
bar_function();
stop_now = 1;
}
return 0;
}
Now, here is bar.c
#include <stdio.h>
extern volatile unsigned int stop_now;
void b...
Best way to add Activity to an Android project in Eclipse?
...n Ubuntu 10.04. When the add dialog comes up, it has two selections... No, now only one "Create a new element at the top level, in Application." Ne;low that there is a text entry field and below that, a box with selections for Activity, Activity Alias, Meta Data and so on. Below that there are butto...
Why is Swift compile time so slow?
...le file (actually one method) that was causing the compiler to go berzek.
Now don't get me wrong. Swift does recompile all your files each time, but the great thing now, is that Apple added real-time compilation feedback over the files it compiles, so Xcode 6 GM now shows which Swift files are bein...
java.util.Date vs java.sql.Date
...ate component as one long and time component as another, for example right now would be 20100221 and 154536123. These magic numbers can be used in SQL queries and will be portable from database to another and will let you avoid this part of JDBC/Java Date API:s entirely.
...
Start two instances of IntelliJ IDE
...ks for a great answer, I usually use Visual Studio, therefore, my lack of knowledge about IntelliJ.
– Felix
May 6 '11 at 9:45
...
Determining complexity for recursive functions (Big O notation)
...nd I need help determining the complexity of these recursive functions. I know how to solve simple cases, but I am still trying to learn how to solve these harder cases. These were just a few of the example problems that I could not figure out. Any help would be much appreciated and would greatly he...