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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...eding. Here's a brief implementation.
def spoonfeed(qs, func, chunk=1000, start=0):
''' Chunk up a large queryset and run func on each item.
Works with automatic primary key fields.
chunk -- how many objects to take on at once
start -- PK to start from
>>> spoonfeed(...
How to install an apk on the emulator in Android Studio?
... (For full beginners)
1- Run the emulator, and wait until it's completely started.
2- Go to your sdk installation folder then go to platform-tools (you should see an executable called adb.exe)
3- create a new file and call it run.bat, edit the file with notepad and write CMD in it and save it.
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Count the number occurrences of a character in a string
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str.count(sub[, start[, end]])
Return the number of non-overlapping occurrences of substring sub in the range [start, end]. Optional arguments start and end are interpreted as in slice notation.
>>> sentence = 'Mary had a little la...
If threads share the same PID, how can they be identified?
...hey also have a TGID (thread group ID) which is the PID of the thread that started the whole process.
Simplistically, when a new process is created, it appears as a thread where both the PID and TGID are the same (new) number.
When a thread starts another thread, that started thread gets its own P...
How can I create tests in Android Studio?
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This answer is for people who are just getting started with Android testing. I will provide two simple examples to help you see how testing works. If you follow along for the next 10 minutes, you will be all set up to start adding your tests to your own app. I think you'l...
How to assign name for a screen? [closed]
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To start a new session
screen -S your_session_name
To rename an existing session
Ctrl+a, : sessionname YOUR_SESSION_NAME Enter
You must be inside the session
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Should an Enum start with a 0 or a 1?
...y best practice is to not number them and let it be implicit - which would start from 0. Since its implicit its the language preference which is always good to follow :)
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How do you calculate program run time in python? [duplicate]
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Quick alternative
import timeit
start = timeit.default_timer()
#Your statements here
stop = timeit.default_timer()
print('Time: ', stop - start)
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How can I put the current running linux process in background? [closed]
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Resume each suspended job jobspec in the background, as if it had been started with &. If jobspec is not present, the shell's notion of the current job is used.
EDIT
To start a process where you can even kill the terminal and it still carries on running
nohup [command] [-args] > [filena...
window+nginx+php-cgi的php-cgi线程/子进程问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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::window不支持 nginx的多线程,仅仅能手工生成多个php-cgi
start "fcgi服务" /MIN /D "%batDir%php" php-cgi.exe -b 127.0.0.1:9000 -c "%batDir%php/php.ini"
start "fcgi服务" /MIN /D "%batDir%php" php-cgi.exe -b 127.0.0.1:9001 -c "%batDir%php/php.ini"
start "fcgi服务" /MIN /D...