boilerplate | Somewhere to put all my rinse lather repeat code | Continous Integration library
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Somewhere to put all my rinse lather repeat code from projects
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QUESTION
So, I am working on an MVVM-based core SDK for use any time I am developing some Google Apps Script based software, called OpenSourceSDK
. It contain core business logic, including base classes to extend. For example, the file Models/BaseModel.gs
in it is defined to be:
ANSWER
Answered 2021-Jun-13 at 22:53I was able to get it resolved, but the solution is...hacky.
So, apparently, Google Apps Script exports only what is in globalThis
of a project: just the function
s and var
iables. No class
es, no const
ants, ...
Probably has a lot to do with how ES6 works, with its globalThis
behavior. One can see that in action, by creating a dummy function
, a dummy var
iable, and a dummy class
in their local developer console:
QUESTION
I personally would say that a boilerplate is like a single snippet that can be pasted. But there are repos like this one: https://github.com/h5bp/html5-boilerplate
So, what should be the difference? Google search doesn't really provide an useful answer. Since the actual dictionary definitions of these terms are completely different from their meaning in programing.
...ANSWER
Answered 2021-Jun-13 at 00:22Boilerplate: repetitive stuff that is necesssary, yet you get to type it out again and again and again, and it just feels like it wastes time to have to do it so many times. Most frameworks try to reduce boilerplate as much as possible while still being flexible enough to cover all necessities.
Scaffolding: a starting point for your program (or part of it), generated by some tool. You take it and tweak it to your needs. This combats the boilerplate problem by automatically generating some of it so you don't need to type it by hand.
QUESTION
I have created a custom KmlLayer class to which I had to add in a value of the custom map class to the map
property similar to this guide here:
https://developers.google.com/maps/documentation/javascript/examples/layer-kml
Like so:
...ANSWER
Answered 2021-Jun-14 at 15:50I believe typescript wants your CustomMap
to extend google.maps.Map
. But since you seem to be using composition, I guess you'll have to proxy all those methods.
QUESTION
Im new to JavaScript, I'm using vanilla js , html and css to survey website where user can add question, and option as well, when they click a button it will create a container which they can fill with the 'tag:textarea'. I'm using the 'createElement()', 'setAttribute()' method for creating a new container. But since each container has so many nested nodes or components, I have write a tons of boilerplate code to create a container, plus I have to change the id of some element with the nested 'Hell' , It become so hard to managed. My html code is Below:
...ANSWER
Answered 2021-Jun-14 at 11:15You have several options, two of which are:
If you don't mind parsing HTML each time (and parsing HTML is really fast on modern browser), you can use
insertAdjacentHTML
instead, perhaps with a template literal so you can embed newlines easily and use${x}
syntax for embedded values:
QUESTION
I'm arduously struggling my way through the N-queens problem in SICP (the book; I spent a few days on it -- last question here: Solving Eight-queens in scheme). Here is what I have for the helper functions:
...ANSWER
Answered 2021-Jun-12 at 09:35When you are doing the SICP problems, it would be most beneficial if you strive to adhere to the spirit of the question. You can determine the spirit from the context: the topics covered till the point you are in the book, any helper code given, the terminology used etc. Specifically, avoid using parts of the scheme language that have not yet been introduced; the focus is not on whether you can solve the problem, it is on how you solve it. If you have been provided helper code, try to use it to the extent you can.
SICP has a way of building complexity; it does not introduce a concept unless it has presented enough motivation and justification for it. The underlying theme of the book is simplification through abstraction, and in this particular section you are introduced to various higher order procedures -- abstractions like accumulate, map, filter, flatmap which operate on sequences/lists, to make your code more structured, compact and ultimately easier to reason about.
As illustrated in the opening of this section, you could very well avoid the use of such higher programming constructs and still have programs that run fine, but their (liberal) use results in more structured, readable, top-down style code. It draws parallels from the design of signal processing systems, and shows how we can take inspiration from it to add structure to our code: using procedures like map, filter etc. compartmentalize our code's logic, not only making it look more hygienic but also more comprehensible.
If you prematurely use techniques which don't come until later in the book, you will be missing out on many key learnings which the authors intend for you from the present section. You need to shed the urge to think in an imperative way. Using set! is not a good way to do things in scheme, until it is. SICP forces you down a 'difficult' path by making you think in a functional manner for a reason -- it is for making your thinking (and code) elegant and 'clean'.
Just imagine how much more difficult it would be to reason about code which generates a tree recursive process, wherein each (child) function call is mutating the parameters of the function. Also, as I mentioned in the comments, assignment places additional burden upon the programmers (and on those who read their code) by making the order of the expressions have a bearing on the results of the computation, so it is harder to verify that the code does what is intended.
Edit: I just wanted to add a couple of points which I feel would add a bit more insight:
- Your code using set! is not wrong (or even very inelegant), it is just that in doing so, you are being very explicit in telling what you are doing. Iteration also reduces the elegance a bit in addition to being bottom up -- it is generally harder to think bottom up.
- I feel that teaching to do things recursively where possible is one of the aims of the book. You will find that recursion is a crucial technique, the use of which is inevitable throughout the book. For instance, in chapter 4, you will be writing evaluators (interpreters) where the authors evaluate the expressions recursively. Even much earlier, in section 2.3, there is the symbolic differentiation problem which is also an exercise in recursive evaluation of expressions. So even though you solved the problem imperatively (using set!, begin) and bottom-up iteration the first time, it is not the right way, as far as the problem statement is concerned.
Having said all this, here is my code for this problem (for all the structure and readability imparted by FP, comments are still indispensable):
QUESTION
I am using Vue3/Vuex 4/TypeScript.
I am trying to access my typed store from within my component (App.vue
).
Whenever I set const store = useStore()
, store
will always return as undefined
As far as I can tell, I've followed the official Vuex 4 TypeScript Support Documentation verbatim.
app.ts
...ANSWER
Answered 2021-Jun-11 at 23:52Your syntax for installing the Vuex instance to your app is a little off. You can only install one Vue plugin to an app in each call to use
, so combining router, store, key
like that doesn't work. As such, Vuex isn't getting installed at all.
To fix, change this line:
QUESTION
I have a callable struct Foo
defined as
ANSWER
Answered 2021-Jun-11 at 15:16Your assumption that there is extra overhead involved is not necessarily correct. Compilers are really good at optimizing things, and it's always worth confirming whether that's the case or not before spending time refactoring the code for what will amount to no benefit whatsoever.
Case in point:
QUESTION
I want to mock a module for a test. Everything works, but I have to copy/paste the same code into every test file. How can I make this more maintainable?
(This is using Babel and TypeScript in a Next.js project.)
The production code looks like this:
...ANSWER
Answered 2021-Jun-10 at 15:37Maybe using the __mock__
directory can help you.
from the docs:
Manual mocks are defined by writing a module in a mocks/ subdirectory immediately adjacent to the module. For example, to mock a module called user in the models directory, create a file called user.js and put it in the models/mocks directory.
You can also mock modules from the node_modules
directory.
QUESTION
I recently saw that Swift had introduced concurrency support with the Actor model in Swift 5.5. This model enables safe concurrent code to avoid data races when we have a shared, mutable state.
I want to avoid main thread data races in my app's UI. For this, I am wrapping DispatchQueue.main.async
at the call site wherever I set a UIImageView.image
property or a UIButton
style.
ANSWER
Answered 2021-Jun-10 at 15:19Actor isolation and re-entrancy is now implemented in the Swift stdlib. So, Apple recommends using the model for concurrent logic with many new concurrency features to avoid data races. Instead of lock-based synchronisation (lots of boilerplate), we now have a much cleaner alternative. There are a couple of solutions here (see below).
Solution 1The simplest possible. Apple have made the process much cleaner using the @MainActor
method annotation:
QUESTION
I'm trying to get SWR to work. Every example I have found doesn't seem to work when i apply it to my code. I'm not sure what i'm doing wrong the code appears to be the same, i'm sure something super simple that i just can't see.
I have a boilerplate next.js app.
my index.js
has;
ANSWER
Answered 2021-Jun-09 at 18:29You need a method to make the request, for you case, it could be like:
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