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How do I uniquely identify computers visiting my web site?
...y uniquely identify each computer which visits the web site I am creating. Does anybody have any advice on how to achieve this?
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Convert JavaScript string in dot notation into an object reference
...gotten many upvotes, I am also somewhat horrified. If one needs to convert dot-notation strings like "x.a.b.c" into references, it could (maybe) be a sign that there is something very wrong going on (unless maybe you're performing some strange deserialization).
That is to say, novices who find ...
What are the use-cases for Web Workers? [closed]
... use is Web I/O - in other words, polling URLs in background. That way you don't block the UI waiting for polling results.
Another practical use: in Bespin, they’re using Web Workers to do the syntax highlighting, which you wouldn’t want to block your code editing whilst you’re using the app.
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How can I easily convert DataReader to List? [duplicate]
...ties or fields to maps DataReaders to objects. (A bit like what LinqToSql does.) They save a bit of typing and may reduce the number of errors when coding for DBNull etc. Once you cache the generated code they can be faster then most hand written code as well, so do consider the “high road” i...
How to start two threads at “exactly” the same time
The threads should start at same split second. I understand, if you do thread1.start() , it will take some milliseconds before the next execution of thread2.start() .
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How do I pull from a Git repository through an HTTP proxy?
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To authenticate with the proxy:
git config --global http.proxy http://mydomain\\myusername:mypassword@myproxyserver:8080/
(Credit goes to @EugeneKulabuhov and @JaimeReynoso for the authentication format.)
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Get HTML5 localStorage keys
... make an update. Truth is, the example above isn't really the right way to do this. The best and safest way is to do it like this:
for ( var i = 0, len = localStorage.length; i < len; ++i ) {
console.log( localStorage.getItem( localStorage.key( i ) ) );
}
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jQuery to loop through elements with the same class
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Use each: 'i' is the postion in the array, obj is the DOM object that you are iterating (can be accessed through the jQuery wrapper $(this) as well).
$('.testimonial').each(function(i, obj) {
//test
});
Check the api reference for more information.
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C# 'is' operator performance
...at it then returns null instead of false.
– Konrad Rudolph
Nov 29 '09 at 23:55
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What is the purpose of “return await” in C#?
... block).
Consider these two versions of a method:
Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
return foo.DoAnotherThingAsync();
}
}
async Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
return await foo.Do...