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What is process.env.PORT in Node.js?
... tell your web server what port to listen on.
So process.env.PORT || 3000 means: whatever is in the environment variable PORT, or 3000 if there's nothing there.
So you pass that app.listen, or to app.set('port', ...), and that makes your server be able to accept a parameter from the environment wh...
Big-O for Eight Year Olds? [duplicate]
I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...
R programming: How do I get Euler's number?
...laint until now suggests to me that many people read "Euler's constant" to mean e, and if you change the title, future searchers will fail to find this page. Also, glancing at wikipedia, it seems this reading of "Euler's constant" is quite widespread (since there's even a note at the top of the page...
Hyphen, underscore, or camelCase as word delimiter in URIs?
...idual words), and is not a word character. Underscore is a word character, meaning it should be considered part of a word.
Double-click this in Chrome: camelCase
Double-click this in Chrome: under_score
Double-click this in Chrome: hyphen-ated
See how Chrome (I hear Google makes a search engine ...
Does Git Add have a verbose switch
... github. One of the decisions I have made is to only use the console as it means a smaller tooling footprint if I ever need to change PCs, etc.
...
How to create an object for a Django model with a many to many field?
...e_object.users.add(1,2)
Update: After reading the saverio's answer, I decided to investigate the issue a bit more in depth. Here are my findings.
This was my original suggestion. It works, but isn't optimal. (Note: I'm using Bars and a Foo instead of Users and a Sample, but you get the idea).
ba...
What exactly is LLVM?
...
can you give an actual example of what it means?
– InTheNameOfScience
Oct 5 '18 at 8:30
1
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When to create a new app (with startapp) in Django?
...
Does that mean, if I make a child model, it must always be in the same app? Since I can't easily drop it into another project without bringing over two "apps"
– Lionel
Feb 10 '11 at 5:22
...
Using NSPredicate to filter an NSArray based on NSDictionary keys
...ct containing the name Vòódòó.
From the Apple documentation:
like[cd] means “case- and diacritic-insensitive like.”) For a complete description of the string syntax and a list of all the operators available, see Predicate Format String Syntax.
...
How do I use CMake?
... CMake configures the entire project using a build format of your choice, meaning it sets everything up so that you can use, for example, Visual Studio to compile. By default (at least on linux), it makes a project that uses Make instead. Make is used to actually build the project, not configure or...