Any Python file is a module, its name being the file’s base name without the .py extension. A package is a collection of Python modules: while a module is a single Python file, a package is a directory of Python modules containing an additional __init__.py file, to distinguish a package from a directory that just … Read more
Labeling correctly It means that you’re calling something what it actually is. The classic example is that if something is a table, it should contain rows and columns of data. To use that for layout is semantically incorrect – you’re saying “this is a table” when it’s not. Another example: a list (<ul> or <ol>) … Read more
The term is ambiguous, but in my internationalization work, we typically avoided the term “multibyte character sets” to refer to Unicode-based encodings. Generally, we used the term only for legacy encoding schemes that had one or more bytes to define each character (excluding encodings that require only one byte per character). Shift-jis, jis, euc-jp, euc-kr, … Read more
an “!important” declaration (the delimiter token “!” and keyword “important” follow the declaration) takes precedence over a normal declaration. http://www.w3.org/TR/CSS2/cascade.html#important-rules Basically, where two style rules are the same… it gives the one marked !important greater importance and will apply those styles. Example div{ opacity:0 !important; } div.jason{ opacity:1; } The first rule would be applied … Read more
The versioning is simply a mess: Java 1.0 and 1.1 were normal Then came Java 1.2, but you were supposed to call it “Java 2, JDK 1.2” This continued until 1.4 (There were also minor releases like 1.4.2) The next version was then supposedly “Java 5.0”, but there was still “1.5” all over the place … Read more
I’m tempted to lie and say that English is my second language…but the truth is that I just have no idea what ‘Coalescing’ means. I know what ?? ‘does’ in C#, but the name doesn’t make sense to me. I looked up the word and I understand it to be a synonym for ‘join’. I’d … Read more
A web service typically offers a WSDL from which you can create client stubs automatically. Web Services are based on the SOAP protocol. ASP.NET Web API is a newer Microsoft framework which helps you to build REST based interfaces. The response can be either JSON or XML, but there is no way to generate clients … Read more
The really simplified answer is that the kernel runs in kernel space, and normal programs run in user space. User space is basically a form of sand-boxing — it restricts user programs so they can’t mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but usually doesn’t … Read more
If a framework is opinionated, it lock or guides you into their way of doing things. For example: some people believe that a template system shouldn’t provide access to user defined methods and functions as it leaves the system open to returning raw HTML. So an opinionated framework developer only allows access to data structures. … Read more
Imagine that you’re eating candy out of a bowl. You take one piece regularly. To prevent the bowl from running out, someone might refill the bowl before it gets empty, so that when you want to take another piece, there’s candy in the bowl. The bowl acts as a buffer between you and the candy … Read more