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How do I capture SIGINT in Python?
...ython script that starts several processes and database connections. Every now and then I want to kill the script with a Ctrl + C signal, and I'd like to do some cleanup.
...
Mercurial undo last commit
...o it because it keeps your history accurate and complete. If 2 years from now someone finds a bug in what you pulled down you can look in your (unused but saved) implementation of the same thing and go, "oh, I did it right". :)
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Is it good style to explicitly return in Ruby?
......
def plus_one_to_y(x)
@y = x + 1
puts "In plus_one_to_y"
end
Now the function is broken if anything expects a returned value. If nothing expects a returned value, it's fine. Clearly if somewhere further down the code chain, something calling this is expecting a returned value, it's g...
Print JSON parsed object?
...ve got a javascript object which has been JSON parsed using JSON.parse I now want to print the object so I can debug it (something is going wrong with the function). When I do the following...
...
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
.... + ak2 = b2
...
a1k + a2k + ... + akk = bk
Using Newton's identities, knowing bi allows to compute
c1 = a1 + a2 + ... ak
c2 = a1a2 + a1a3 + ... + ak-1ak
...
ck = a1a2 ... ak
If you expand the polynomial (x-a1)...(x-ak) the coefficients will be exactly c1, ..., ck - see Viète's formulas. Si...
Compiling problems: cannot find crt1.o
...idn't have it installed in the first place, thus you need to reinstall it, now that you reverted back to gcc.
You can do so like this on Debian:
aptitude show libc-dev
Ubuntu:
apt-get install libc-dev
On Ubuntu, if you don't have libc-dev, since I cannot find it on packages.ubuntu.com, you ca...
When to use “new” and when not to, in C++? [duplicate]
...Some examples of this are:
void foo()
{
Point p = Point(0,0);
} // p is now destroyed.
for (...)
{
Point p = Point(0,0);
} // p is destroyed after each loop
Some people will say that the use of new decides whether your object is on the heap or the stack, but that is only true of variables de...
Why does git-rebase give me merge conflicts when all I'm doing is squashing commits?
...nough to throw out an answer. Maybe will have to edit it, but I believe I know what your problem is.
Your toy repo test case has a merge in it - worse, it has a merge with conflicts. And you're rebasing across the merge. Without -p (which doesn't totally work with -i), the merges are ignored. This ...
How can I explode and trim whitespace?
...the whole time... this + implode saved my freaking life..I can go eat food now.
– jenki221
May 29 '15 at 20:30
4
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Fastest way to get the first object from a queryset in django?
...'m pretty sure you'll even see this add LIMIT 1 to the query, and I don't know that you can do any better than this. However, internally __nonzero__ in QuerySet is implemented as try: iter(self).next() except StopIteration: return false... so it doesn't escape the exception.
–...