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Using arrays or std::vectors in C++, what's the performance gap?
...e they suggest not to use C++ arrays on new projects anymore. As far as I know Stroustroup himself suggests not to use arrays. But are there significant performance differences?
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String literals and escape characters in postgresql
... I was referring to strings in SQL statements, while you are now using a psql command. Do you get the same error using the COPY command instead of \copy?
– eppesuig
Nov 17 '11 at 12:14
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java.net.ConnectException: Connection refused
...d a lot more information to be able to help you. (For one thing, we don't know what firewall you have...)
– Jon Skeet
Jan 19 '18 at 14:58
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How to get a Fragment to remove itself, i.e. its equivalent of finish()?
I'm converting an app to use fragments using the compatibility library.
Now currently I have a number of activities (A B C D) which chain onto one another, D has a button 'OK' which when pressed calls finish which then bubbles up through onActivityResult() to additionally destroy C and B.
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How to loop through a plain JavaScript object with the objects as members?
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for (var key in validation_messages) {
// skip loop if the property is from prototype
if (!validation_messages.hasOwnProperty(key)) continue;
var obj = validation_messages[key];
for (var prop in obj) {
// skip loop if the property is from prototype
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How to refer environment variable in POM.xml?
...ely describe your project so please use environment variables judiciously. If you make your builds dependent on your environment, they are harder to reproduce
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Where to define custom error types in Ruby and/or Rails?
...stom error types in a Ruby library (gem) or Ruby on Rails application? Specifically:
5 Answers
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How do I pass the value (not the reference) of a JS variable to a function? [duplicate]
...change_selection(index);
});
})(i);
}
EDIT, 2013:
These are now commonly referred to as an IIFE
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C dynamically growing array
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I can use pointers, but I am a bit afraid of using them.
If you need a dynamic array, you can't escape pointers. Why are you afraid though? They won't bite (as long as you're careful, that is). There's no built-in dynamic array in C, you'll just have to write one yourself. In C++, ...
How to compute the similarity between two text documents?
... will return normalized tf-idf
pairwise_similarity = tfidf * tfidf.T
or, if the documents are plain strings,
>>> corpus = ["I'd like an apple",
... "An apple a day keeps the doctor away",
... "Never compare an apple to an orange",
... "I prefer scikit-lea...