I was just reading through the book and it had the terms, "HAS-A" and "IS-A" in it. Anyone know what they mean specifically? Tried searching in the book, but the book is 600 pages long.

An IS-A relationship is inheritance. The classes which inherit are known as sub classes or child classes. On the other hand, HAS-A relationship is composition.

2010年12月6日 · We implement an One-to-Many relationship by adding one Table's PK, as FK to the other Table. We implement a Many-to-Many relationship by adding 2 Table's PKs to a third Table. How do we implement ...

2008年8月19日 · A lambda is a type of function, defined inline. Along with a lambda you also usually have some kind of variable type that can hold a reference to a function, lambda or otherwise.

Actually this isn't true: "docker pull-ing the :latest tag of an image will add at least two images to your local image list: one with the latest tag, and one for each original tag of the latest image, e.g. 14.04 and trysty above."

2010年1月12日 · Watch out! There is a bunch of knowledge rot in this thread (stuff that used to be true and now isn't). To avoid false-positive rejections of actual email addresses in the current and future world, and from anywhere in the world, you need to know at least the high-level concept of RFC 3490, "Internationalizing Domain Names in Applications (IDNA)".

2010年3月19日 · I am using ASP.NET 2.0 with a database. This is most likely where your problem lies. You need to verify with an independent database tool what the data looks like.

Historically, the first extensions used for C++ were .c and .h, exactly like for C.This caused practical problems, especially the .c which didn't allow build systems to easily differentiate C++ and C files.

All Platforms (Mac, Linux & Windows) 2024. If you just need to upgrade your old version of Node.js to the latest one and don't need multiple versions, simply over-write your existing executable with the new one.

a++ first reads the value of a and then increments its value. ++a first increments the value and then reads it.