mixins

问题 I have spent a day on the web trying to get bootstrap's media-breakpoint-only working without finding clear instructions. I have the bootstrap navbar working so, I suspect, I have bootstrap installed correctly. I want to get the following code working: h1 { @include media-breakpoint-only(xs) { color: red; } @include media-breakpoint-only(sm) { color: green; } @include media-breakpoint-only(md) { color: blue; } @include media-breakpoint-only(lg) { color: yellow; } @include media-breakpoint

问题 I'm trying to offer a SORT functionality amongst all my modules and I'd like to know integrate this. Does Angular support some sort of mixin? I'd like the mixin to inject new properties (models) and methods to the controller associated to the module. These properties and methods should only use their associated controller's scope. I know I could use underscore _.extend or jQuery.extend() , but I'd like to know if there's a cleaner way to do this in a true Angular spirit. Regards. 回答1: One

问题 I just found out that variables in less are "lazy loaded" (as discribed here: http://lesscss.org/features/#variables-feature-lazy-loading ) in the sense that if you set up a variable, use it and then set it to another value the complied code will use that last set value. i.e. @w: 30%; .myclass { width: @w; } would compile to: .myclass { width: 50% } would the same apply to mixins? i.e. will .mycolor() { color: red; } .myclss { .mycolor() } .mycolor() { color: blue; } compile to: (no lazy)

问题 I have set multiple view paths in my express application: express.set('views',['/path1', '/path2', '/path3']); When I am rendering my view, I want to include the pug file form path2 in path1 . # /path2/index.pug include path1/mixin.pug I can not find a solution for this problem. 回答1: I didn't use express.set views. Just do this in your pug file include ../path1/mixin.pug (or without .pug can also work) eg include ../path1/mixin Edit: For those that down voted this, you know nothing jon snow.

问题 If I create an Object A: let A = {}; And want to mix in methods from other Objects B and C: let B = { foo() { alert("Boo!"); } }; let C = { bar() { alert("No!"); } }; Normally I would call: Object.assign(A, B, C); Then I change my function foo: Object.assign(B, { foo() { alert("Hooray!"); } }); Objcect.assign(C, { bar() { alert("Yes!"); } }); After that I call foo or bar: A.foo(); // Actual output: "Boo!", desired: "Hooray!" A.bar(); // Actual output: "No!", desired: "Yes!" So far I found out

问题 Here is code: IDefaultInterface.aj: public interface IDefaultInterface { public void m1(); static aspect Impl{ public int f1; public void IDefaultInterface.m1(){ } } } DefaulstInterfaceClass.java: public class DefaultInterfaceClass implements IDefaultInterface { @Override public void m1() { } void mm() { f1 = 9; } } In the second piece of code I'm trying to override m1() method and access f1 field. The compiler allows neither one. How to overcome these limitations? Additional thoughts. I

问题 I've narrowed down my issue to the following minimal (non-)working example: class Z trait A[E <: Z] { type T[X <: E] <: A[X] } trait B[E <: Z] extends A[E] { type T[X <: E] <: B[X] } trait C[E <: Z, F[X <: Z] <: C[X, F]] extends A[E] { type T[X <: E] = F[X] } class D[E <: Z] extends B[E] with C[E, D] It is sort of a higher-kinded F-bounded polymorphism (I'm using T[E] as the return value of some methods). When I try to compile this code I get: error: overriding type T in trait B with bounds[X

问题 Should be rather simple but it's not. Here's my code : string cases() { string ret = ""; string[] methods; methods = [__traits(derivedMembers,mixin("Math"))]; foreach (string s; methods) ret ~= "case \"" ~ s ~ "\": return Math."~s~"(params);"; methods = [__traits(derivedMembers,mixin("OtherClass"))]; foreach (string s; methods) ret ~= "case \"" ~ s ~ "\": return OtherClass."~s~"(params);"; return ret; } string execute(string what, string[] params) { switch (what) { mixin(cases()); default:

问题 Is it possible to make a SASS mixin to prepend its output to the selector? I use Modernizr to check for svg capability of the browser. It outputs the svg class to the <html> element when svg is supported. I would like the background-image to change depending on the svg capability. Basically, this is what I need: .container .image { background-image: url('some.png'); } html.svg .container .image { background-image: url('some.svg'); } What I would like to have in my SCSS is a mixin that I could

问题 I want to list methods of a class in a mixin. To do it I assume I have to open the file containing the source code in the mixin, but finding that file's name is harder than I thought. I tried using __FILE__ but it gives the mixin declaration's file... so I would have to define the mixin in every file... which doesn't make any sense since the goal is to reduce boilerplate code. For now my solution is to pass the filename as an argument inside the class's constructor and call the mixin from