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Referring to the null object in Python
... message that mentions that NoneType can't do this or can't do that, just know that it's simply the one None that was being used in a way that it can't.
Also, None is a built-in constant. As soon as you start Python, it's available to use from everywhere, whether in module, class, or function. NoneT...
Scanner vs. StringTokenizer vs. String.Split
I just learned about Java's Scanner class and now I'm wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shop...
Storing Images in DB - Yea or Nay?
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Re: "super-accelerating" products: Most web servers can now take advantage of the sendfile() system call to deliver static files asynchronously to the client. It offloads to the operating system the task of moving the file from disk to the network interface. The OS can do this muc...
How to convert R Markdown to PDF?
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Updated Answer (10 Feb 2013)
rmarkdown package:
There is now an rmarkdown package available on github that interfaces with Pandoc.
It includes a render function. The documentation makes it pretty clear how to convert rmarkdown to pdf among a range of other formats. This includes i...
Is there a way to do method overloading in TypeScript?
... {
someMethod(numberParameter: number, stringParameter: string): void {
Now even in languages that support overloads with separate implementations (note: TypeScript overloads share a single implementation) - programmers are advices to provide consistency in ordering. This would make the signature...
Using multiple let-as within a if-statement in Swift
...and latitude or longitude as Double")
}
Update: This version of the code now works properly.
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What are the main performance differences between varchar and nvarchar SQL Server data types?
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@cbmeeks: I don't code for what I don't know. But if you can use it with no noticeable performance hit, then your databases aren't big enough for it to matter...
– gbn
Mar 7 '12 at 15:48
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What does && mean in void *p = &&abc;
...id *p = &&abc; . What is the significance of && here?
I know about rvalue references but I think && used in this context is different. What does && indicate in void *p = &&abc; ?
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OS X Framework Library not loaded: 'Image not found'
I am trying to create a basic OS X Framework, right now I just have a test framework created: TestMacFramework.framework and I'm trying to import it into a brand new OS X Application project.
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Download File Using Javascript/jQuery
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2019 modern browsers update
This is the approach I'd now recommend with a few caveats:
A relatively modern browser is required
If the file is expected to be very large you should likely do something similar to the original approach (iframe and cookie) because some of the belo...