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#pragma once vs include guards? [duplicate]
I'm working on a codebase that is known to only run on windows and be compiled under Visual Studio (it integrates tightly with excel so it's not going anywhere). I'm wondering if I should go with the traditional include guards or use #pragma once for our code. I would think letting the compiler de...
Can I use Class.newInstance() with constructor arguments?
I would like to use Class.newInstance() but the class I am instantiating does not have a nullary constructor. Therefore I need to be able to pass in constructor arguments. Is there a way to do this?
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How to convert numbers between hexadecimal and decimal
How do you convert between hexadecimal numbers and decimal numbers in C#?
17 Answers
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user authentication libraries for node.js?
...ntication succeeds or fails.
For example, here is the two-step process to setup form-based (username and password) authentication:
passport.use(new LocalStrategy(
function(username, password, done) {
// Find the user from your DB (MongoDB, CouchDB, other...)
User.findOne({ username: user...
Where does PostgreSQL store the database?
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How to parse a CSV file using PHP [duplicate]
Suppose I have a .csv file with the following content:
6 Answers
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Why compile Python code?
Why would you compile a Python script? You can run them directly from the .py file and it works fine, so is there a performance advantage or something?
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Elegant Python function to convert CamelCase to snake_case?
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How to export table as CSV with headings on Postgresql?
I'm trying to export a PostgreSQL table with headings to a CSV file via command line, however I get it to export to CSV file, but without headings.
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What's the algorithm to calculate aspect ratio?
... limit for the fraction numerator/denominator.
In the example below I am setting an upper limit of 50 because I need 1035x582 (1.77835051546) to be treated as 16:9 (1.77777777778) rather than 345:194 which you get with the plain gcd algorithm listed in other answers.
<html>
<body>
<...