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Is SQL or even TSQL Turing Complete?
This came up at the office today. I have no plans of doing such a thing, but theoretically could you write a compiler in SQL? At first glance it appears to me to be turing complete, though extremely cumbersome for many classes of problems.
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Remove duplicates in the list using linq
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var distinctItems = items.Distinct();
To match on only some of the properties, create a custom equality comparer, e.g.:
class DistinctItemComparer : IEqualityComparer<Item> {
public bool Equals(Item x, Item y) {
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Bold words in a string of strings.xml in Android
I have a long text in one of the strings at strings.xml. I want to make bold and change the color of some words in that text.
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How can I get a user's media from Instagram without authenticating as a user?
I'm trying to put a user's recent Instagram media on a sidebar. I'm trying to use the Instagram API to fetch the media.
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What's the difference between an id and a class?
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ids must be unique where as class can be applied to many things. In CSS, ids look like #elementID and class elements look like .someClass
In general, use id whenever you want to refer to a specific element and class when you have a number of things that are all alike. For instance, ...
How to click or tap on a TextView text
I know this is so easy (doh...) but I am looking for a way to run a method on tapping or clicking a TextView line of text in an Android App.
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SQLite in Android How to update a specific row
I've been trying to update a specific row for a while now, and it seems that there are two ways to do this. From what I've read and tried, you can just use the:
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Scrollview vertical and horizontal in android
I'm really tired looking for a solution for vertical and horizontal Scrollview.
11 Answers
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Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
I'm having a bit of a strange problem. I'm trying to add a foreign key to one table that references another, but it is failing for some reason. With my limited knowledge of MySQL, the only thing that could possibly be suspect is that there is a foreign key on a different table referencing the one I ...
How do I delete a fixed number of rows with sorting in PostgreSQL?
I'm trying to port some old MySQL queries to PostgreSQL, but I'm having trouble with this one:
6 Answers
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