Why is the inline string block in Ruby named “eos”? [closed]
EOS means end of string. it is displayed at the end of the string. EOS means more than GFJKDHAGJHFGDJ for example. But you can use other names, too.
syntax
Where does the excerpt in the git diff hunk header come from?
Is there a way to customize it? The configuration is defined in .gitattributes, section “Defining a custom hunk-header”: First, in .gitattributes, you would assign the diff attribute for paths. *.tex diff=tex Then, you would define a “diff.tex.xfuncname” configuration to specify a regular expression that matches a line that you would want to appear as the … Read more
Use of ellipsis(…) in Java? [duplicate]
It means that this method can receive more than one Object as a parameter. To better understating check the following example from here: The ellipsis (…) identifies a variable number of arguments, and is demonstrated in the following summation method. static int sum (int … numbers) { int total = 0; for (int i = … Read more
What types are valid for the `self` parameter of a method?
Before Rust 1.33, there are only four valid method receivers: struct Foo; impl Foo { fn by_val(self: Foo) {} // a.k.a. by_val(self) fn by_ref(self: &Foo) {} // a.k.a. by_ref(&self) fn by_mut_ref(self: &mut Foo) {} // a.k.a. by_mut_ref(&mut self) fn by_box(self: Box<Foo>) {} // no short form } fn main() {} Originally, Rust didn’t have this … Read more
What does :: mean in Rust?
Please review Appendix B: Operators and Symbols of The Rust Programming Language. In this case, the double colon (::) is the path separator. Paths are comprised of crates, modules, and items. The full path for your example item, updated for 1.0 is: std::usize::BITS Here, std is the crate, usize is a module, and BITS is … Read more
Expected unqualified-id before numeric constant for defining a number
The full error is error: expected unqualified-id before numeric constant note: in expansion of macro ‘homeid’ string homeid; ^ You’re trying to declare a variable with the same name as a macro, but that can’t be done. The preprocessor has already stomped over the program, turning that into string 1234;, which is not a valid … Read more
Ruby: Proc.new { ‘waffles’ } vs. proc { ‘waffles’ }
From Metaprogamming Ruby Page 113. In Ruby 1.8, Kernel#proc() is actually a synonym for Kernel#lambda(). Because of loud protest from programmers, Ruby 1.9 made proc() a synonym for Proc.new() instead.
Programming terms – field, member, properties (C#)
In C# : fields : These are variables declared at the class level. public class SomeClass { private int someInteger; // This is a field public double someDouble; // This is another field protected StringBuidler stringBuidler; // Still another field } properties : Often used as accessors to a private field of a class, they … Read more
What is this : sign after a variable JS syntax?
Any JavaScript statement (kind-of except function declarations) can be preceded by a label: foo: var x = 0; What you’ve got there is something like that: $: doubled = 6 * 2; In your statement, “$” is the label. There’s not much point to labelled statements because there’s no goto in JavaScript. Both break and … Read more
Sass map.get() doesn’t work. map-get() does. What gives?
I am having a similar issue as OP (using dart-sass v1.25.0), and only map-get works, map.get doesn’t. The documentation doesn’t seem to be very clear on this, but the (Sass Module System: Draft 6) document on Github explains it better. It seems like Sass is moving on to using @use in favour of @import for … Read more