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What are the advantages of using nullptr?
...n write this:
template<typename T>
void f(T *ptr); //function to handle non-nullptr argument
void f(nullptr_t); //an overload to handle nullptr argument!!!
1. In C++, NULL is defined as #define NULL 0, so it is basically int, that is why f(int) is called.
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What does map(&:name) mean in Ruby?
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It's shorthand for tags.map(&:name.to_proc).join(' ')
If foo is an object with a to_proc method, then you can pass it to a method as &foo, which will call foo.to_proc and use that as the method's block.
The Symbol#to_proc meth...
No connection could be made because the target machine actively refused it?
...topping you.
If it happens occasionally - you used the word "sometimes" - and retrying succeeds, it is likely because the server has a full 'backlog'.
When you are waiting to be accepted on a listening socket, you are placed in a backlog. This backlog is finite and quite short - values of 1, 2 or...
How to trace the path in a Breadth-First Search?
... return path
# enumerate all adjacent nodes, construct a new path and push it into the queue
for adjacent in graph.get(node, []):
new_path = list(path)
new_path.append(adjacent)
queue.append(new_path)
print bfs(graph, '1', '11')
Another appro...
How to get process ID of background process?
I start a background process from my shell script, and I would like to kill this process when my script finishes.
7 Answers...
Javascript How to define multiple variables on a single line?
... to an object ( array, object literal, function ) it's passed by reference and not value. So if you change just one of those variables, and wanted them to act individually you will not get what you want because they are not individual objects.
There is also a downside in multiple assignment, in tha...
Putty: Getting Server refused our key Error
...po in my key. Apparently when pasting to file the first letter was cut off and it started with sh-rsa instead of ssh-rsa.
nrathathaus - your answer was very helpful, thanks a lot, this answer is credited to you :) I did like you said and set this in sshd_conf:
LogLevel DEBUG3
By looking at the l...
Why does python use 'else' after for and while loops?
I understand how this construct works:
21 Answers
21
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Google Maps API v3: How to remove all markers?
... The markers are still kept in the array though so it will grow larger and larger. Would suggest clearing the array as well after the loop
– Ami
Oct 5 '12 at 9:08
5
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How to get a Fragment to remove itself, i.e. its equivalent of finish()?
...ich then bubbles up through onActivityResult() to additionally destroy C and B.
13 Answers
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