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Go to beginning of line without opening new line in VI
For ages now I've used SHIFT O and SHIFT $ to move to the beginning and end of a line in vi .
10 Answers
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python: SyntaxError: EOL while scanning string literal
I have the above-mentioned error in s1="some very long string............"
15 Answers
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Why does InetAddress.isReachable return false, when I can ping the IP address?
...y slow, or maybe even if there is some funniness in your privileges/system settings, if could return false negatives (i.e. it could fail even though the input address is reachable).
2) The isReachable failure is an outstanding issue. Again - there are several online resources indicating that there...
Implement C# Generic Timeout
... }
catch(ThreadAbortException ex){
Thread.ResetAbort();// cancel hard aborting, lets to finish it nicely.
}
};
IAsyncResult result = wrappedAction.BeginInvoke(null, null);
if (result.AsyncWaitHandle.WaitOne(timeoutMilliseconds))
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Why are primes important in cryptography?
...rize an integer into its prime factors. Yet, it is very easy to check if a set of prime factors multiply to a certain integer.
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std::back_inserter for a std::set?
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set doesn't have push_back because the position of an element is determined by the comparator of the set. Use std::inserter and pass it .begin():
std::set<int> s1, s2;
s1 = getAnExcitingSet();
transform(s1.begin(), s1....
IndentationError: unindent does not match any outer indentation level
... Yeah, that can be tricky. I use emacs to edit python, and I have it setup to always replace tabs with spaces in py files so I don't have this problem. Notepad++ might have an option like this as well.
– Kevin Tighe
Jan 29 '09 at 16:49
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Generating Guids in Ruby
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As of Ruby 1.9, uuid generation is built-in. Use the SecureRandom.uuid function.
For example:
require 'securerandom'
SecureRandom.uuid # => "96b0a57c-d9ae-453f-b56f-3b154eb10cda"
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Declaring array of objects
I have a variable which is an array and I want every element of the array to act as an object by default. To achieve this, I can do something like this in my code.
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Quick Way to Implement Dictionary in C
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I am surprised no one mentioned hsearch/hcreate set of libraries which although is not available on windows, but is mandated by POSIX, and therefore available in Linux / GNU systems.
The link has a simple and complete basic example that very well explains its usage.
It e...