bindr | A small JavaScript dependency injection framework | Dependency Injection library
kandi X-RAY | bindr Summary
kandi X-RAY | bindr Summary
In other words, take the following code…. In the preceding code, Car is now dependent upon Engine and Dashboard. This makes it more difficult to unit test the Car in complete isolation. There’s no way to create an instance of a Car without in turn creating an instance of an Engine and a Dashboard. Dependency injection allows for a small bit of configuration that says, When a class needs a dependency named x, create an instance of y. So, you can now have code that would look like…. Now this.engine will be assigned a new instance of Engine, and likewise for Dashboard. bindr comes in and allows you to switch a dependencies constructor out. In production code, the Car might be dependent upon Engine, but when writing unit tests, bindr allows you to swap that dependency out for a FakeEngine. Now you are able to test your Car in complete isolation. Another great advantage of Bindr is that it doesn’t change your existing functions other than creating a small wrapper. You can simply plug them in your existing constructors, and use them as you normally would.
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Trending Discussions on bindr
QUESTION
I am trying to load in the necessary libraries from firebase into an electron project, currently the header looks like this:
...ANSWER
Answered 2021-Mar-01 at 12:30You have two content-security-policy meta tags. Initially you should remove one of them unless you have some specific reason for having a duplicate content-security-policy, as any content must pass all CSPs. Then you need to add www.gstatic.com into the script-src directive.
Also watch out for content-security-policy inserted as a response header as some frameworks may insert CSP as a header. You may also want to move your meta tag to response headers as meta tags don't support all directives of CSP.
QUESTION
I'm trying to build Result Builder
that accumulates Errors
(in my case they are named Failures
as I'm following some code from https://fsharpforfunandprofit.com/). It's current implementation returns first encountered Failure
when ideally I'd prefer it to either return Success
with desired value or a Failure
with a list of all missing/corrupted values. Unfortunately current implementation it's a bit verbose.
Boilerplate code
...ANSWER
Answered 2021-Feb-24 at 03:43I searched around a bit and didn't find any validators that use the new and!
syntax and accumulate errors, so I decided to write a quick one myself. I think this does what you want, and is much simpler. Note that I'm using Result<_, List<_>>
to accumulate a list of errors, rather than creating a new type.
QUESTION
I am facing an issue with the accept() function in the below code. It keeps giving me 10038 error. I read about the error 10038 (WSAENOTSOCK). But I can't find the exact issue here. Similar Linux code works fine as the server code.
PS: I am running this in Visual Studio on Windows.
...ANSWER
Answered 2020-Dec-15 at 12:18The error code WSAENOTSOCK
seems fairly self-explanatory. You have...
QUESTION
I am currently trying to knit an R markdown document to html (or pdf) where in a certain chunk I generate multiple plots. I specify the captions through the fig.cap
argument in the chunk options with a vector of the same length as the number of plots. However, for this to work the chunk option message
has to be TRUE
.
The issue starts when a ggplot2 object is generated by a function in the chunk and I want to apply a new fill with viridis::scale_fill_viridis
. Which is fine, but inevitably throws a message/warning that there is already a fill applied to the ggplot2 object and that the viridis will replace it (Scale for 'fill' is already present. Adding another scale for 'fill', which will replace the existing scale
). I do not want to get this into the output of my markdown html. Using suppressMessages
apparently also suppresses the html (and pdf!) captions.
So my question is: is there a way to "unset" the existing scales attribute to avoid this message being generated? Short from that my only other option would be to dive into the code that generated the object in the first place. Or: is there a way that knitr preserves captions when the chunk option messages=F
?
A minimal working example would be the following code in an R markdown document:
...ANSWER
Answered 2017-Sep-01 at 15:07Take a look at a ggplot object, here p
:
str(p)
There's a lot of sub-structure. Take a look at p$scales
. It's a ScalesList. The following might help you:
i <- which(sapply(p$scales$scales, function(x) 'fill' %in% x$aesthetics))
p$scales$scales[[i]] <- NULL
QUESTION
I am new to nodejs and working on a proof of concept just for fun.
Background: I have a cloud directory of user information (like username, password and other info). This cloud directory can be used to authenticate a user only via restful API (i.e. no direct connectivity using LDAP or JDBC etc.).
Aim: To build an LDAP interface for this cloud directory. To start with I am interested only in authentication (LDAP bind).
Intended Flow:
LDAPClient initiates a standard LDAP simple BIND request: Host: host where my nodejs app will run Port: 1389 (port that my nodejs app will be bound to) Username: a user from cloud directory Password: user's password
This request is received by my NodeJS app (I am using ldapjs module).
...
ANSWER
Answered 2019-Jul-02 at 05:17Of course it's possible in nodejs. If I understand you want to make an authenticating request to a server and have it either fail or succeed.
QUESTION
I came across this by accident, and I have no idea what's going on. Can anyone explain this?
...ANSWER
Answered 2018-Oct-16 at 14:20d$foobar
is being ignored by plot()
, because iris$foobar
is NULL
.
It's simply plotting the petal length, with on the x-axis the index.
Compare with plot(iris$Petal.Length)
or plot(iris$Petal.Length, NULL)
.
QUESTION
Below you will find my attempt to implement the Result type including the functions Bind and Pure(aka return). All seems well until I put the parts together.
- First the IDE detect type issues at (*) even though the execution results in the expected value and type.
- Second when executing the code (**) the value is as expected even tough the type is not what I expect.
- Resulting type is : Result[&S,&E] : Ok(Banana("banana"))
- I expected the type: Result[Banana, Undefined]: Ok(Banana("banana"))
On the other hand when I use the second bind implementation (bindR2) the test (***) fails with an exception in the call: partial(bindR2, functionA)(PureR(Apple("Apple"))). Here the error is:
...ANSWER
Answered 2018-Aug-18 at 10:17Excellent question.
- The type checker is still in beta, and may produce spurious errors and warnings. The interpreter will ignore them for now.
- I suspect the run-time type is indeed
Result[Banana, Undefined]
, you migh check this using thetypeOf
function in the Type library module.println("")
- If that's true, this {c,w}ould be a type instantiation bug (forgot to instantiate one level of type parameters in case of a higher-order function???) in the abstract interpretetation which produces the (static) types of variables, next to the interpreted results. Please submit this as an issue?
- That (hypothetical) bug could also explain the run-time failure for the second implementation, which checks for sub-type on an accidentally non-instantiated type parameters and fails on this.
QUESTION
I feel as though I lack the intuition to always know how sf
objects will interact with tidyverse
tools, especially dplyr
. Here is an example. We're looking to take two buffers of points, and then subtract the smaller buffer, to leave a ring/annulus around each point. I provide two methods of doing it.
The first breaks off the geometry column, uses map2
to get the annuli, and then bolts it back onto the original sf
dataframe. This approach makes sense; I know how all the pieces work, but does not feel "tidy" or neat because we create intermediary objects, we have to manually replace the crs
, and it feels as though it would be easy to mismatch geometries to attributes.
The second approach is what I came up with trying to keep it within a single pipe. Here I'm hoping that group_by
and mutate
can It does work, sort of, managing at least to run without error and seems to create the right annuli, but something causes the plot method to zoom in far. I also don't know if there are any other differences in what the two approaches actually do.
EDIT: It's not just plot zoom that is different, the result of st_bbox
is also different for some reason. However, the rings still seem to be centered on the points, and they look the same in mapview::mapview()
. Also included session info, I'm updated to R 3.4.4, sf
0.6-1, tidyverse
1.2.1. I'll update everything else though and see what happens.
ANSWER
Answered 2018-Apr-18 at 10:22AFAICT, in your example, you are essentially writing a loop over every row (group/ungroup around the mutate); by overwriting geometry within this loop, you get the bounding box of the last feature, rather than of the whole geometry list-column. The problem is that st_difference does all pairwise differences, rather than row-wise. You can get row-wise difference with the following code (which requires sf from github):
QUESTION
I have a problem to get partial dependence plots with mlr to work properly for me. Somehow not the probability is plottet, but just the class label. I suspect, that the target may be lost during the creation of der partialdependence-data.
Any ideas?
...ANSWER
Answered 2018-Mar-28 at 15:43Hopefully the mlr
package maintainers can help (I don't use that package). However, in the meantime, you can fit the model directly, and just use the pdp
package:
QUESTION
I am working on a spatial problem using the sf
package in conjunction with dplyr
and purrr
.
I would prefer to perform spatial operations inside a mutate
call, like so:
ANSWER
Answered 2018-Feb-01 at 10:28you can considerably speed-up this by simply dropping the unnecessary map_lgl
call in the pipe:
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