大约有 14,532 项符合查询结果（耗时：0.0146秒） [XML]
Why is creating a Thread said to be expensive?
... indicate a 150+ fold improvement if you use a thread pool versus creating/starting a new thread each time. (And he makes the point that this is all relative ...)
(The above assumes "native threads" rather than "green threads", but modern JVMs all use native threads for performance reasons. Gre...
Command line progress bar in Java
... the console.
The key is the difference between \n and \r.
\n goes to the start of a new line. But \r is just carriage return - it goes back to the start of the same line.
So the thing to do is to print your progress bar, for example, by printing the string
"|======== |\r"
On the next t...
Can I run multiple programs in a Docker container?
...pervisor, allowing you to sepcify behaviour for each process such as autorestart=true, stdout_logfile, stderr_logfile etc. Take a look at docs.docker.com/engine/admin/using_supervisord
– Andreas Lundgren
Aug 12 '16 at 7:39
...
How to get process ID of background process?
I start a background process from my shell script, and I would like to kill this process when my script finishes.
7 Answers...
Measure execution time for a Java method [duplicate]
...cise, I would use nanoTime() method rather than currentTimeMillis():
long startTime = System.nanoTime();
myCall();
long stopTime = System.nanoTime();
System.out.println(stopTime - startTime);
In Java 8 (output format is ISO-8601):
Instant start = Instant.now();
Thread.sleep(63553);
Instant end...
Running PostgreSQL in memory only
...ccessful with a tool like testcontainers, which essentially lets your test startup a throwaway, dockerized, postgres-instance. See github.com/testcontainers/testcontainers-java/blob/master/…
– Hans Westerbeek
Jan 11 '18 at 13:50
...
Keep CMD open after BAT file executes
...his is exactly what I was looking for, because I'm running the bat file at startup, not through a CMD command. +1
– Hawkeye
Oct 28 '16 at 15:41
3
...
Activity has leaked ServiceConnection @438030a8 that was original
...'s own.
To ensure a service is kept running, even after the activity that started it has had its onDestroy method called, you should first use startService.
The android docs for startService state:
Using startService() overrides the default service lifetime that is managed by bindService(Inten...
NOW() function in PHP
...
at last php started to copy from delphi and c# :)
– Erçin Dedeoğlu
Nov 1 '14 at 10:04
1
...
Bat file to run a .exe at the command prompt
...
To start a program and then close command prompt without waiting for program to exit:
start /d "path" file.exe
share
|
impro...