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Python dictionary: are keys() and values() always the same order?
...
Yes. Starting with CPython 3.6, dictionaries return items in the order you inserted them.
Ignore the part that says this is an implementation detail. This behaviour is guaranteed in CPython 3.6 and is required for all other Pyth...
How to reset postgres' primary key sequence when it falls out of sync?
...sort to the ALTER SEQUENCE syntax i.e.
ALTER SEQUENCE table_name_id_seq RESTART WITH 1;
ALTER SEQUENCE table_name_id_seq RESTART; -- 8.4 or higher
But ALTER SEQUENCE is of limited use because the sequence name and restart value cannot be expressions.
It seems the best all-purpose solution is to ...
Zooming editor window android studio [duplicate]
...for finding application functions. In the preferences dialog, you can just start typing to do search (you can just start typing from a lot of places in the UI to begin a search); there's also a search box.
There's a key binding for searching actions by name; on MacOS it's command-shift-A. That's a ...
Web-scraping JavaScript page with Python
...simple example:
class MySpider(scrapy.Spider):
name = "jsscraper"
start_urls = ["http://quotes.toscrape.com/js/"]
def start_requests(self):
for url in self.start_urls:
yield SplashRequest(
url=url, callback=self.parse, endpoint='render.html'
)
d...
Try catch statements in C
...intf("Exception happened here\n");
} else {
// Normal code execution starts here
Test();
}
}
void Test() {
// Rough equivalent of `throw`
longjmp(s_jumpBuffer, 42);
}
This website has a nice tutorial on how to simulate exceptions with setjmp and longjmp
http://www.di.unipi.it/~...
Spring @Autowired usage
...peated all over. To me this seems to have the potential for errors.
I've started using auto-wiring almost exclusively at work because we depend so much on Spring integration anyway that the dependency issue is moot. I worked on a Spring MVC project that used auto-wiring extensively and was a littl...
VC DDE（Dynamic Data Exchange）与EXCEL连接 - C/C++ - 清泛网 - 专注C/C++及内核技术
...: 0xx\n", iReturn);
Sleep(1500);
return 0;
}
//Start DDE Server and wait for it to become idle.
HINSTANCE hRet = ShellExecute(0, "open", szTopic, 0, 0, SW_SHOWNORMAL);
if ((int)hRet < 33)
{
printf("Unable to Start DDE Server: 0xx\n", hRet);
...
How to split one string into multiple strings separated by at least one space in bash shell?
...ingarray=($sentence)
now you can access individual elements directly (it starts with 0):
echo ${stringarray[0]}
or convert back to string in order to loop:
for i in "${stringarray[@]}"
do
:
# do whatever on $i
done
Of course looping through the string directly was answered before, but th...
How to kill an Android activity when leaving it so that it cannot be accessed from the back button?
In an given Android activity, I would like to start a new activity for the user at some point. Once they leave the first activity and arrive at the second, the first activity is stale and I want to remove it completely so it can not be accessed again from the back button.
...
Find full path of the Python interpreter?
...r "already in the python shell" examples, all assume that the python shell started is what you get if you type python from the shell. If you start with an explicit different path (e.g. /opt/python/2.5/bin/python), or use python3 and then run those python commands, all of them produced incorrect answ...