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How does collections.defaultdict work?
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edited Feb 10 '19 at 14:35
answered May 5 '11 at 15:49
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How to use the pass statement?
...that you don't want to implement, yet.
class MyClass(object):
def meth_a(self):
pass
def meth_b(self):
print "I'm meth_b"
If you were to leave out the pass, the code wouldn't run.
You would then get an:
IndentationError: expected an indented block
To summarize, the pa...
How can i tell if an object has a key value observer attached
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edited Jul 16 '11 at 11:14
Bo Persson
84k1919 gold badges134134 silver badges196196 bronze badges
answe...
How to find gaps in sequential numbering in mysql?
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mattmatt
4,07611 gold badge2323 silver badges3030 bronze badges
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How to set Java environment path in Ubuntu
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204
set environment variables as follows
Edit the system Path file /etc/profile
sudo gedit /etc/p...
Sending HTTP POST Request In Java
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349
Updated Answer:
Since some of the classes, in the original answer, are deprecated in the newer...
How to implement an STL-style iterator and avoid common pitfalls?
... void swap(iterator& lhs, iterator& rhs); //C++11 I think
};
input_iterator : public virtual iterator {
iterator operator++(int); //postfix increment
value_type operator*() const;
pointer operator->() const;
friend bool operator==(const iterator&, const iterator&)...
viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
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edited Oct 16 '15 at 13:48
Community♦
111 silver badge
answered Nov 29 '09 at 20:36
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How to wait for several Futures?
...]):Future[List[Any]] = {
val fut = if (futures.size == 1) futures.head._2
else Future.firstCompletedOf(futures.values)
fut onComplete{
case Success(value) if (futures.size == 1)=>
prom.success(value :: values)
case Success(value) =>
processFutures(fut...
How to debug heap corruption errors?
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edited Mar 19 '19 at 18:24
answered Jun 18 '09 at 4:46
lea...