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Difference between Fact table and Dimension table?
...se structure that can be queried in a very efficient way.
On its simplest form, it contains a fact table (Example: StoreSales) and a one or more dimension tables. Each Dimension entry has 0,1 or more fact tables associated with it (Example of dimension tables: Geography, Item, Supplier, Customer, T...
MySQL, better to insert NULL or empty string?
I have a form on a website which has a lot of different fields. Some of the fields are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data?
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Best practices for storing postal addresses in a database (RDBMS)?
...re frustrating than dealing with a website that is oriented around only US-format addresses. It's a little rude at first, but becomes a serious problem when the validation is also over-zealous.
If you are concerned with going global, the only advice I have is to keep things free-form. Different cou...
In C#, how to check if a TCP port is available?
...ports. There are lots of good objects available in the System.Net.NetworkInformation namespace.
Use the IPGlobalProperties object to get to an array of TcpConnectionInformation objects, which you can then interrogate about endpoint IP and port.
int port = 456; //<--- This is your value
bool...
What is the scope of variables in JavaScript?
...r (function scope), let (block scope), and const (block scope). Most other forms of identifier declaration have block scope in strict mode.
Overview
Scope is the region of the codebase over which an identifier is valid.
A lexical environment is a mapping between identifier names and the values assoc...
Why is exception handling bad?
...ach error condition by introducing a return value for it. You will loose information about the error. Thinking that you can keep everything nicely synced by checking each and every statement and doing the cleaning up leads to very convoluted code - catching an error over multiple statements and clea...
How to add text to request body in RestSharp
...nt to insert XML into the body of my RestRequest in its already serialized form (i.e., as a string). Is there an easy way to do this? It appears the .AddBody() function conducts serialization behinds the scenes, so my string is being turned into <String /> .
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Is it a bad practice to use an if-statement without curly braces? [closed]
...amusing ways.
Maintainability-wise, it's always smarter to use the second form.
EDIT: Ned points this out in the comments, but it's worth linking to here, too, I think. This is not just some ivory-tower hypothetical bullshit: https://www.imperialviolet.org/2014/02/22/applebug.html
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How do I decode a string with escaped unicode?
... this is a solution that should apply to older browsers or non-browser platforms, and is kept alive for instructional purposes. Please refer to @radicand 's answer below for a more up to date answer.
This is a unicode, escaped string. First the string was escaped, then encoded with unicode. To co...
What are 'closures' in .NET?
...e's always more to learn :) I've just finished reading CLR via C# - very informative. Other than that, I usually ask Marc Gravell for WCF/binding/expression trees, and Eric Lippert for C# language things.
– Jon Skeet
Jan 9 '09 at 16:18
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