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How to process SIGTERM signal gracefully?
...l_now = False
def __init__(self):
signal.signal(signal.SIGINT, self.exit_gracefully)
signal.signal(signal.SIGTERM, self.exit_gracefully)
def exit_gracefully(self,signum, frame):
self.kill_now = True
if __name__ == '__main__':
killer = GracefulKiller()
while not killer.kill_now:...
Can git undo a checkout of unstaged files
...private".
Meaning it cannot be restored by GIT if overwritten with the index or the HEAD version (unless you have a copy of your current work somewhere).
A "private" content is one only visible in your current directory, but not registered in any way in Git.
Note: As explained in other answers, you ...
Find an item in List by LINQ?
Here I have a simple example to find an item in a list of strings. Normally I use for loop or anonymous delegate to do it like this:
...
How do I alias commands in git?
... git config alias command:
$ git config --global alias.st status
On unix, use single quotes if the alias has a space:
$ git config --global alias.ci 'commit -v'
On windows, use double quotes if the alias has a space or a command line argument:
c:\dev> git config --global alias.ci "commit ...
How do you use script variables in psql?
...
Postgres variables are created through the \set command, for example ...
\set myvariable value
... and can then be substituted, for example, as ...
SELECT * FROM :myvariable.table1;
... or ...
SELECT * FROM table1 WHERE :myvariable IS NULL;
edit: As of psql 9.1, variables can b...
What does Ruby have that Python doesn't, and vice versa?
...l find them completely unhelpful, because they all turn around why feature X sucks in language Y, or that claim language Y doesn't have X, although in fact it does. I also know exactly why I prefer Python, but that's also subjective, and wouldn't help anybody choosing, as they might not have the sam...
Usages of Null / Nothing / Unit in Scala
...urns (meaning it cannot complete normally by returning, it could throw an exception). Nothing is never instantiated and is there for the benefit of the type system (to quote James Iry: "The reason Scala has a bottom type is tied to its ability to express variance in type parameters."). From the arti...
Create Directory When Writing To File In Node.js
...ike so:
// Creates /tmp/a/apple, regardless of whether `/tmp` and /tmp/a exist.
fs.mkdir('/tmp/a/apple', { recursive: true }, (err) => {
if (err) throw err;
});
or with a promise:
fs.promises.mkdir('/tmp/a/apple', { recursive: true }).catch(console.error);
Node <= 10.11.0
You can solv...
How to extract custom header value in Web API message handler?
...esn't serve any value as it will never return null. If the header doesn't exist you will get an InvalidOperationException. You need to use TryGetHeaders if it's possible the header might not exist in the request and check for a false response OR try/catch around the GetValues call (not recommended)....
rsync error: failed to set times on “/foo/bar”: Operation not permitted
...
Funny thing is I'm syncing ext3 to ext3 both OSes are linux. I've never had to use this switch before. -O did the trick, but I wish I didn't have to use it.
– d-_-b
Dec 14 '10 at 8:48
...