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#ifdef #ifndef in Java
...ic final boolean enableFast = "true".equals(System.getProperty("fast"));
Then any conditions dependent on enableFast will be evaluated by the JIT compiler. The overhead for this is negligible.
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Is there a way to tell git to only include certain files instead of ignoring certain files?
...D. This worked. All I had to do was start the .gitignore file with * and then list all of my included file patterns proceeded by an exclamation point.
– Daisy Sophia Hollman
Aug 14 '09 at 19:44
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Using Kafka as a (CQRS) Eventstore. Good idea?
...urable period of time. For example if
the retention is set for two days, then for the two days after a
message is published it is available for consumption, after which it
will be discarded to free up space. Kafka's performance is effectively
constant with respect to data size so retaining l...
How can I preview a merge in git?
...branch
If git reports conflicts (and ONLY IF THERE ARE conflicts) you can then do:
git merge --abort
If the merge is successful, you cannot abort it (only reset).
If you're not ready to merge, use the safer way above.
[EDIT: 2016-Nov - I swapped strategy 1 for 2, because it seems to be that most p...
Is std::unique_ptr required to know the full definition of T?
...e type at that point.
No more undefined behavior:
If your code compiles, then you've used a complete type everywhere you need to.
class A
{
class impl;
std::unique_ptr<impl> ptr_; // ok!
public:
A();
~A();
// ...
};
shared_ptr and unique_ptr require a complete type i...
Cycles in family tree software
...efore any other events involving them. This is a directed graph. You could then check that the graph contains no cycles. See this question on StackOverflow. This should be ok until time travel is invented.
– Paul Harrison
Jun 1 '11 at 9:26
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Android - Set fragment id
... .add(R.id.fragment_holder, new AwesomeFragment())
.commit();
and then
AwesomeFragment awesome = (AwesomeFragment)
getSupportFragmentManager()
.findFragmentById(R.id.fragment_holder);
will get you whatever (awesome) fragment is held in R.id.fragment_holder.
...
No identities were available - administrator request
...ged!)If you are in Preferences -> Accounts and you still can't refresh, then:
Click on the Accounts tab
Select an Apple ID in the list
Click "View Details" on the bottom right
Click on the refresh arrow on the bottom left
Xcode will now refresh the updated credentials, and you can proceed to va...
How to get the path of a running JAR file?
...g this method in a class that is in a external Jar, loaded via class-path, then the path of the external jar will be given instead of the actual running Jar.
– Mr00Anderson
Feb 26 '19 at 16:06
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Redis - Connect to Remote Server
..., and make sure to change the default
bind 127.0.0.1
to
bind 0.0.0.0
Then restart your service (service redis-server restart)
You can then now check that redis is listening on non-local interface with
redis-cli -h 192.168.x.x ping
(replace 192.168.x.x with your IP adress)
Important note :...