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Converting a List to a comma separated string
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Larsenal: but StringBuilder.Append(Int32) internally calls ToString on the integer anyway. StringBuilder doesn't magically avoid the cost of allocating a string for each element; it just tucks it nicely out of sight.
– itowlson
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Serializing object that contains cyclic object value
...e will come here for is debugging their circular objects and there's not really a great way to do that without pulling in a bunch of code, here goes.
One feature that's not as well-known as JSON.stringify() is console.table(). Simply call console.table(whatever);, and it will log the variable in the...
PHP - Move a file into a different folder on the server
I need to allow users on my website to delete their images off the server after they have uploaded them if they no longer want them. I was previously using the unlink function in PHP but have since been told that this can be quite risky and a security issue. (Previous code below:)
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What is the best way to implement nested dictionaries?
I have a data structure which essentially amounts to a nested dictionary. Let's say it looks like this:
21 Answers
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Session variables in ASP.NET MVC
I am writing a web application that will allow a user to browse to multiple web pages within the website making certain requests. All information that the user inputs will be stored in an object that I created. The problem is that I need this object to be accessed from any part of the website and I ...
Accessing constructor of an anonymous class
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How would I be able to call a method in the superclass of Test from within println, when that method is overridden?
– Mark Jeronimus
Feb 25 '14 at 14:56
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What do the following phrases mean in C++: zero-, default- and value-initialization?
What do the following phrases mean in C++:
2 Answers
2
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What is an ORM, how does it work, and how should I use one? [closed]
... case with a pseudo language:
You have a book class, you want to retrieve all the books of which the author is "Linus". Manually, you would do something like that:
book_list = new List();
sql = "SELECT book FROM library WHERE author = 'Linus'";
data = query(sql); // I over simplify ...
while (row ...
selecting unique values from a column
...nstead of using SELECT * ... use SELECT column 1, column 2... Unless you really do need all columns.
– LPChip
Nov 18 '17 at 20:43
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Using OR in SQLAlchemy
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SQLAlchemy overloads the bitwise operators &, | and ~ so instead of the ugly and hard-to-r...