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John Carmack's Unusual Fast Inverse Square Root (Quake III)
...
Casting the pointer to long is an approximation of log_2(float). Casting it back is an approximation of 2^long. This means that you can make the ratio approximately linear.
– wizzwizz4
Sep 1 '17 at 17:29
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Does “git fetch --tags” include “git fetch”?
... -- gitster -- in commit 9fcd144, 26 Oct 2016)
fetch: use "quick" has_sha1_file for tag following
When fetching from a remote that has many tags that are irrelevant to branches we are following, we used to waste way too many cycles when checking if the object pointed at by a tag (that we ...
Detecting taps on attributed text in a UITextView in iOS
...UITapGestureRecognizer(target: self, action: #selector(myMethodToHandleTap(_:)))
tap.delegate = self
textView.addGestureRecognizer(tap)
}
@objc func myMethodToHandleTap(_ sender: UITapGestureRecognizer) {
let myTextView = sender.view as! UITextView
let layou...
Given two directory trees, how can I find out which files differ by content?
...-dereference --new-file --no-ignore-file-name-case /dir1 /dir2 > dirdiff_1.txt
rsync --recursive --delete --links --checksum --verbose --dry-run /dir1/ /dir2/ > dirdiff_2.txt
The choice between them depends on the location of dir1 and dir2:
When the directories reside on two seperate drive...
windows service vs scheduled task
... TimeSpan(0,2,0));
}
Source: http://tutorials.csharp-online.net/Creating_a_.NET_Windows_Service%E2%80%94Alternative_1%3a_Use_a_Separate_Thread (Dead Link)
I've been running lots of Windows Services like this for years and it works for me. I still haven't seen a recommended pattern that people ag...
Static Indexers?
...follows:
public class Utilities
{
private static ConfigurationManager _configurationManager = new ConfigurationManager();
public static ConfigurationManager ConfigurationManager => _configurationManager;
}
public class ConfigurationManager
{
public object this[string value]
{
...
Is there a pattern for initializing objects created via a DI container
... the implementation:
class MyIntfImpl : IMyIntf, IMyIntfSetter {
string _runTimeParam;
void Initialize(string runTimeParam) {
_runTimeParam = runTimeParam;
}
string RunTimeParam { get; }
IMyIntf MyIntf {get {return this;} }
}
//Unity configuration:
//Only the setter is mapped to t...
Recommended way to save uploaded files in a servlet application
...loads = new File("/path/to/uploads");
Environment variable via SET UPLOAD_LOCATION=/path/to/uploads:
File uploads = new File(System.getenv("UPLOAD_LOCATION"));
VM argument during server startup via -Dupload.location="/path/to/uploads":
File uploads = new File(System.getProperty("upload.locat...
Send inline image in email
...chment(filePath);
att.ContentDisposition.Inline = true;
mail.From = from_email;
mail.To.Add(data.email);
mail.Subject = "Client: " + data.client_id + " Has Sent You A Screenshot";
mail.Body = String.Format(
"<h3>Client: " + data.client_id + " Has Sent You A Screenshot</h3&...
What Does 'Then' Really Mean in CasperJS
...,
"function step2() { this.echo('this is step two'); }",
"function _step() { this.open(location, settings); }",
"function step3() { this.echo('this is step 3 (google.com is loaded)'); }"
]
Notice the _step() function which has been added automatically by CasperJS to load the url for us...