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onKeyPress Vs. onKeyUp and onKeyDown
...down a key) immediately triggers both handlers to be pushed into the event queue, but in a fixed order. "you just want to have an argument for argument's sake" - Eh? The core thesis of your answer is that keypress, keyup, and keydown are analogous to click, mouseup, and mousedown. The natural interp...
Android accelerometer accuracy (Inertial navigation)
...ry, so I used this as my offset. By the "Around 10" bit, I meant that over 5000 iterations, adding up each of the accelerations on a single axis from the sensor did not total roughly 0 ms^-2 (as it would if it fluctuated evenly above and below the offset value), but instead tended to register accele...
Likelihood of collision using most significant bits of a UUID in Java
...you could have a central database table for allocating unique ids, or even batches of unique ids.
If you just need to have uniqueness in one app you can just have a counter (or a counter which starts from the currentTimeMillis()*1000 or nanoTime() depending on your requirements)
...
Passing arguments to “make run”
...t is good for: building. it uses a shell script to do what it is good for: batch processing.
plus you can do whatever else you might need with the full flexibility and expressiveness of a shell script without all the caveats of a makefile.
also the calling syntax is now practically identical:
$ ....
Timer & TimerTask versus Thread + sleep in Java
...
The Timer creates a queue of tasks that is continually updated. When the Timer is done, it may not be garbage collected immediately. So creating more Timers only adds more objects onto the heap. Thread.sleep() only pauses the thread, so memory o...
Parallel foreach with asynchronous lambda
... @svick I was puzzling over that last sample. It looks to me that it just batches a load of tasks to create more tasks to me, but they all get started en-mass.
– Luke Puplett
Jun 12 '17 at 16:33
...
What's the best manner of implementing a social activity stream? [closed]
...me. I recently saw a presentation where the developer used Amazon's Simple Queue Service as their messaging backend for a twitter-like application that would have far higher scaling capabilities- it may be worth looking into SQS as part of your system, if your loads are high enough.
...
How do I specify “close existing connections” in sql script
...obsCursor CURSOR FOR
SELECT job_id
FROM sys.dm_exec_background_job_queue
WHERE database_id = @dbId
OPEN jobsCursor
FETCH NEXT FROM jobsCursor INTO @jobId
WHILE @@FETCH_STATUS = 0
BEGIN
set @sqlString = 'KILL STATS JOB ' + STR(@jobId)
EXECUTE sp_executesq...
SQL select only rows with max value on a column [duplicate]
... timings relate to each other as 6/8/9, when it comes to direct lookups or batch (id in (1,2,3)), subquery is much slower then the others (Due to rerunning the subquery). However I couldnt differentiate between leftjoin and correlated solutions in speed.
One final note, as leftjoin creates n*(n+1)/...
console.writeline and System.out.println
...m)
synchronisation (multiple threads can prompt for input and Console will queue them up nicely, whereas if you used System.in/out then all of the prompts would appear simultaneously).
Notice above that redirecting even one of the streams results in System.console() returning null; another irritat...