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
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
“boilerplate code” is any seemingly repetitive code that shows up again and again in order to get some result that seems like it ought to be much simpler. It’s a subjective definition. The term comes from “boilerplate” in the newspaper industry: wiki
A definition is where a value or function is described, i.e. the compiler or programmer is told precisely what it is, e.g. int foo() { return 1; } int var; // or, e.g. int var = 5; but this is clearer. A declaration tells the compiler, or programmer that the function or variable exists. e.g. … Read more
It’s the query, or sometimes the query string. To pinch a useful diagram from the URI RFC: foo://example.com:8042/over/there?name=ferret#nose \_/ \______________/\_________/ \_________/ \__/ | | | | | scheme authority path query fragment
It means: pick a place to start. Think of a pseudo random number generator as just a really long list of numbers. This list is circular, it eventually repeats. To use it, you need to pick a starting place. This is called a “seed”.
Suppose you have a primary key containing a nullable column Kn. If you want to have a second row rejected on the ground that in that second row, Kn is null and the table already contains a row with Kn null, then you are actually requiring that the system would treat the comparison “row1.Kn = … Read more
Are all statements also expressions? “Wherever JavaScript expects a statement, you can also write an expression. Such a statement is called an expression statement. The reverse does not hold: you cannot write a statement where JavaScript expects an expression. For example, an if statement cannot become the argument of a function.” This is comes from … Read more