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How to securely save username/password (local)?
... }
MessageBox.Show("{\"data\": \"some data\"}","Login Message Alert",MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void DecryptString_Click(object sender, EventArgs e)
{
SecureString password = DecryptString(Properties.Settings.Default....
What is the most efficient/elegant way to parse a flat table into a tree?
...BLE AS m JOIN MyTree AS t ON m.ParentId = t.Id
)
SELECT * FROM MyTree;
I tested recursive queries in MySQL 8.0 in my presentation Recursive Query Throwdown in 2017.
Below is my original answer from 2008:
There are several ways to store tree-structured data in a relational database. What you s...
How to save a PNG image server-side, from a base64 data string
...image I see a blank image. I am sure that my dataURL is correct, because I tested that using window.open(dataURL). Why a blank image?
– partho
Aug 16 '15 at 5:02
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Queries vs. Filters
...n uses filters and queries in the same request and it is super fast on the test database. We will soon get the live data in there to see how fast it really is.
– Jonesie
Mar 7 '13 at 5:59
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How do I convert an NSString value to NSData?
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NSString* str = @"teststring";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
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How do I watch a file for changes?
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Just testing this on a Linux box, I'm seeing that the directory_changed method is being called, but not file_changed.
– Ken Kinder
Nov 22 '12 at 19:08
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How to Generate unique file names in C#
...too, and doesn't suffer from race conditions.
For example, if you pass it test.txt, it will attempt to create files in this order:
test.txt
test (2).txt
test (3).txt
etc. You can specify the maximum attempts or just leave it at the default.
Here's a complete example:
class Program
{
stati...
How to check iOS version?
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I just tested putting this in my .pch file and it works great (building with Xcode 5 at least)
– whyoz
Oct 15 '13 at 1:16
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Download data url file
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Ideas:
Try a <a href="data:...." target="_blank"> (Untested)
Use downloadify instead of data URLs (would work for IE as well)
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How can I multiply and divide using only bit shifting and adding?
...f use: https://stackoverflow.com/a/12699549/1182653
EDIT2:
One of the fastest ways to divide by integer constants is to exploit the modular arithmetics and Montgomery reduction: What's the fastest way to divide an integer by 3?
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