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Mercurial move changes to a new branch
...eans, revision 0 is the base on which you started to work on your feature. Now you want to have revisions 1-2 on a named branch, let's say my-feature. Update to revision 0 and create that branch:
$ hg up 0
$ hg branch my-feature
$ hg ci -m "start new branch my-feature"
The history now looks like ...
What would cause an algorithm to have O(log n) complexity?
My knowledge of big-O is limited, and when log terms show up in the equation it throws me off even more.
6 Answers
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Why are Oracle table/column/index names limited to 30 characters?
...understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
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Rails 3 - can't install pg gem
...pplications/Postgres.app/Contents/MacOS/bin:$PATH"
gem install pg should now work. (This is what worked for me.)
Note New versions path looks like:
/Applications/Postgres.app/Contents/Versions/<version>/bin
share
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Differences between distribute, distutils, setuptools and distutils2?
...distutils2.
Recommendation:
If all of this is new to you, and you don't know where to start, I would recommend learning setuptools, along with pip and virtualenv, which all work very well together.
If you're looking into virtualenv, you might be interested in this question: What is the difference...
How remove word wrap from textarea?
...ut you can set wrap="soft" to explicitly disable wrap:
<textarea name="nowrap" cols="30" rows="3" wrap="soft"></textarea>
EDIT: The "wrap" attribute is not officially supported. I got it from the german SELFHTML page (an english source is here) that says IE 4.0 and Netscape 2.0 suppor...
How are ssl certificates verified?
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I did not know that my browser comes installed with the public keys of all major certificate authorities. Now I know how my SSL certificates are getting verified without risk of MITM :). Thanks!
– OneChillDude
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Remove spaces from std::string in C++
...ithm remove_if and isspace:
remove_if(str.begin(), str.end(), isspace);
Now the algorithm itself can't change the container(only modify the values), so it actually shuffles the values around and returns a pointer to where the end now should be. So we have to call string::erase to actually modify ...
Pointer to class data member “::*”
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Here's a real-world example I am working on right now, from signal processing / control systems:
Suppose you have some structure that represents the data you are collecting:
struct Sample {
time_t time;
double value1;
double value2;
double value3;
};
Now ...
Get local IP address
... is right - if there are more than 1 IP address given to you, you need to know which network you're using. Guessing by taking the first or last is not the correct solution.
– gbjbaanb
Sep 4 '13 at 9:11
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