oliver | Pilot study for the UN Global Pulse platform architecture
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kandi X-RAY | oliver Summary
Pilot study for the UN Global Pulse platform architecture
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QUESTION
I am trying to create a scroll indicator on specific content for a page something like this:
https://www.mrporter.com/en-se/journal/fashion/oliver-spencer-occasions-summer-wedding-1967062
I have an element with ID #js-content
to which I want to trigger the scroll content, but right now my code triggers on the whole page.
How do I trigger it when the element shown on the viewport?
This is my sample demo on codepen https://codepen.io/johndavemanuel/pen/YzZRapZ
...ANSWER
Answered 2021-Jun-14 at 05:50This change makes the scroll indicator to appear only after the #js-content
.
QUESTION
I have TextView and I want to show player rank like Your Rank Is 6th
There is a collection that has 8 documents, Inside every document has field named player_name and player_score
.
player_name
= Liam ,player_score
= 14player_name
= Noah ,player_score
= 72player_name
= Oliver ,player_score
= 18player_name
= Elijah ,player_score
= 139player_name
= William ,player_score
= 419player_name
= James ,player_score
= 832player_name
= Benjamin ,player_score
= 1932player_name
= Lucas ,player_score
= 6
Let us suppose I signed in by James account, So the TextView should show me this result after using OrderBy Descending
on Firestore -> Your Rank Is 2nd
How can I do it?
Note 1 : Is that will cost me 1800 reads in my quota because in fact I have more than 1800 documents not 8?
...Note 2 : Every document name is player id
ANSWER
Answered 2021-Jun-06 at 08:06You can query the leaderboard like this:
QUESTION
I have the following statement in my python code, how can I access the value (Warner Bros) of key "string" :
...ANSWER
Answered 2021-May-28 at 18:40The problem is like the python error message says. Python can't find the element with index 4 because the array only has 4 elements and array indices start with 0. So to access the last element in the array you would have to use
QUESTION
I need to perform a ZOH discretization of a continuous LTI state-space model in OpenModelica (OMEdit). I tried two ways of doing this:
- using matrix exponential (Matrices.exp function) for calculating discretized A matrix (Ad) and subsequent calculation of discretized B matrix (Bd) following equation: Bd = A-1 (Ad - I) B, where I is identity matrix; This algebraic equation can be solved either by direct calculation of matrix inversion (Matrices.inv function) or, more efficiently, by solving for Bd matrix using Matrices.solve2 function:
Bd = Matrices.solve2(A,(Ad-identity(2)))
, thus avoiding calculation of matrix inversion. However, in both cases A matrix must be invertible, what generally (and very often) doesn't hold. - using Matrices.integralExp function which should return both discretized matrices (Ad, Bd) and should work for general matrix A, whether invertible or singular; However, this function does not work for me - it returns error message: "No viable alternative near token: (".
I attach code for both methods for demonstration purpose. The state space model represents a very simple second-order system of linearized pendulum with length 1 m, mass 1 kg and gravitational acceleration 9.81 m/s2. Sampling time for discretization is 0.1 s. The first code works fine (A is invertible in this particular case) but the second code doesn't. Does anybody know what am I doing wrong? I'd be grateful for any advice.
method #1:
...ANSWER
Answered 2021-May-03 at 18:10You forgot the equation keyword in example 2. It still won't work in OpenModelica since it seems to have a problem with the alias na=size(A,1)
in that function but you could easily fix the source code to make that work.
QUESTION
So, I have a dataset that looks like this:
R_fighter B_fighter Winner John Smith Bob Down Bob Down Oliver Black Harry Long Oliver Black Amy Kurev Maria Brooke Maria BrookeI want to add a column that adds a factor variable of Red
or Blue
called "Winner_Colour"
.
I'm looking for a way for the code to look at the first letter of column 1
and 2
, then look at Winner
and create a new column "Winner_Colour"
that has Red
if the winner belongs to R_fighter
or Blue
if the winner belongs to B_fighter
I have a feeling it might involve an if-statement
and a ```mutate()`` function but I don't know where to start.
ANSWER
Answered 2021-May-12 at 06:34You can use an ifelse
:
QUESTION
my Problem is fairly simple: I got 3 Methods:
export function F_SetupDatabase(_logger: any): void
export function Q_RunQuery(query: string, db: "session" | "global"): any
export function Q_RunQueryWithParams(query: string, params: string[], db: "session" | "global"): any
To Access a Database File (SQLite3).
( Call order: F_SetupDatabase(..)
-> Q_RunQuery(...)
)
F_SetupDatabase(...)
is used to open a Database File global-database.db
and create another in-Memory Database session
. My main Problem is, that in my App's Main Function, the logs from Q_RunQuery
show up before F_SetupDatabase
. And Query's also won't work and always return undefined
. So i guess it has something to do with async/sync calls or something like that.
I tried to avoid async calls/methods completley 'cause i lack the experience and always hang up myself with these.
SQL Querys are correct.
Full Source Code of database.ts
ANSWER
Answered 2021-May-11 at 08:56Well, I think it may happen because of the Async code. Each query runs async, so you can not access the result of a query, you need to wait for its execution.
QUESTION
I am getting an error in R when running the cv.glmnet
function that I can't trace.
Research only hinted me to the approx()
function that throws the error when searching for lambda but I am not familiar enough with glmnet
to figure out how it connects.
The error is: "need at least two non-NA values to interpolate"
While the solution seems obvious, I am working with simulated data, so definitely no NAs in there. I double-checked multiple times. I also dropped columns with constant variables in one attempt but didn't help either.
Reproducible example is a bit messy due to the complexity of the data (and also not minimal since the error doesn't occur in small example data) but please see below:
...ANSWER
Answered 2021-Apr-26 at 21:259.352584e+229 is causing issues. It's quite a big number.
QUESTION
i have a table like that:
...ANSWER
Answered 2021-Apr-23 at 09:05You can use the DISTINCT ON (name)
clause in combination with an ordering clause, like
QUESTION
I am trying to implement a Rest API to send any type of email (with or without attachments) using SMTP connector. I want the system-email API to get the email content dynamically from a request body.
In my client application I am constructing the json structure as below.
...ANSWER
Answered 2021-Apr-21 at 18:31Built a quick sample flow for you.. Substitute the mail SMTP info and try with the configuration below.
QUESTION
You can see in the following code snippet that I had to manually type all possible string options for GIF. But I guess there must be a better way to achieve this. Anybody can help me with this?
...ANSWER
Answered 2021-Apr-18 at 09:26The fewest changes to your code that would work is probably to define gifs
as a separate constant, and get the keys from it with keyof typeof gifs
.
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