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How to redirect cin and cout to files?
...)
{
std::string line;
while(std::getline(std::cin, line)) //input from the file in.txt
{
std::cout << line << "\n"; //output to the file out.txt
}
}
int main()
{
std::ifstream in("in.txt");
std::streambuf *cinbuf = std::cin.rdbuf(); //save old buf
s...
nonlocal keyword in Python 2.x
...nd store your data as elements therein. Inner functions are not prohibited from mutating the objects that nonlocal variables refer to.
To use the example from Wikipedia:
def outer():
d = {'y' : 0}
def inner():
d['y'] += 1
return d['y']
return inner
f = outer()
print(f(...
How to debug a Flask app
...r=False), or point it at the venv/bin/flask script and use it as you would from the command line. You can leave the reloader disabled, but a reload will kill the debugging context and you will have to catch a breakpoint again.
You can also use pdb, pudb, or another terminal debugger by calling set_...
Extract month and year from a zoo::yearmon object
...
Having had a similar problem with data from 1800 to now, this worked for me:
data2$date=as.character(data2$date)
lct <- Sys.getlocale("LC_TIME");
Sys.setlocale("LC_TIME","C")
data2$date<- as.Date(data2$date, format = "%Y %m %d") # and it works
...
Is it better to call ToList() or ToArray() in LINQ queries?
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@EldritchConundrum 25% comes from this logic: If the number of items is unknown, then calling ToList or ToArray will start by creating a small buffer. When that buffer is filled, it doubles the capacity of the buffer and continues. Since the capacity i...
Update parent scope variable in AngularJS
...one wrapped within another. Now I know the child scope inherits properties from the parent scope but is there a way to update the parent scope variable? So far I have not come across any obvious solutions.
...
Generating random integer from a range
...
Thanks, this seems to be good enough for me from quick tests - its distribution for the -1, 0, 1 is nearly 33:33:33.
– Matěj Zábský
Feb 15 '11 at 20:23
...
How to frame two for loops in list comprehension python
... [entry for tag in tags for entry in entries if tag in entry]
>>> from itertools import chain
>>> list(chain.from_iterable(result))
[u'man', u'thats', u'right', u'awesome']
Adding this together, you could just do
>>> list(chain.from_iterable(entry for tag in tags for en...
What is a good regular expression to match a URL? [duplicate]
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These are the droids you're looking for. This is taken from validator.js which is the library you should really use to do this. But if you want to roll your own, who am I to stop you? If you want pure regex then you can just take out the length check. I think it's a good idea ...
How do I obtain crash-data from my Android application?
How can I get crash data (stack traces at least) from my Android application? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid.
...