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What to do Regular expression pattern doesn't match anywhere in string?
...L parser out of regexes. Most people are not.
But I am. ☻
General Regex-Based HTML Parsing Solutions
First I’ll show how easy it is to parse arbitrary HTML with regexes. The full program’s at the end of this posting, but the heart of the parser is:
for (;;) {
given ($html) {
last ...
How to find gaps in sequential numbering in mysql?
We have a database with a table whose values were imported from another system. There is an auto-increment column, and there are no duplicate values, but there are missing values. For example, running this query:
...
Programmer Puzzle: Encoding a chess board state throughout a game
...ll cater for a lot of previously mentioned issues.
But we can do better.
Base 13 Encoding
It is often helpful to think of the board position as a very large number. This is often done in computer science. For example, the halting problem treats a computer program (rightly) as a large number.
The...
Cross browser JavaScript (not jQuery…) scroll to top animation
... to) return;
scrollTo(element, to, duration - 10);
}, 10);
}
Demo:
function runScroll() {
scrollTo(document.body, 0, 600);
}
var scrollme;
scrollme = document.querySelector("#scrollme");
scrollme.addEventListener("click",runScroll,false)
function scrollTo(element, to, du...
.NET console application as Windows service
...const string ServiceName = "MyService";
public class Service : ServiceBase
{
public Service()
{
ServiceName = Program.ServiceName;
}
protected override void OnStart(string[] args)
{
Program.Start(args);
}
prot...
How to determine programmatically whether a particular process is 32-bit or 64-bit
...pplication/process (note: not the current process) is running in 32-bit or 64-bit mode?
7 Answers
...
Are GUID collisions possible?
I'm working on a database in SQL Server 2000 that uses a GUID for each user that uses the app it's tied to. Somehow, two users ended up with the same GUID. I know that microsoft uses an algorithm to generate a random GUID that has an extremely low chance of causing collisons, but is a collision stil...
Best way to center a on a page vertically and horizontally? [duplicate]
...
The best and most flexible way
My demo on dabblet.com
The main trick in this demo is that in the normal flow of elements going from top to bottom, so the margin-top: auto is set to zero. However, an absolutely positioned element acts the same for distributio...
What is a vertical tab?
...what was the exact specification of VT? What did it actually do? I assume, based on your description, that it moved the imaginary "cursor" vertically down to the next "vertical tab" position. But did it also return the cursor to the beginning of the line? Or did it keep the X position of the cursor ...
Check if a string contains a number
...nction will return True if a digit exists in the string, otherwise False.
Demo:
>>> king = 'I shall have 3 cakes'
>>> num_there(king)
True
>>> servant = 'I do not have any cakes'
>>> num_there(servant)
False
...