maria | MVC framework for JavaScript applications | Model View Controller library
kandi X-RAY | maria Summary
kandi X-RAY | maria Summary
The MVC framework for JavaScript applications. The real MVC. The Smalltalk MVC. The Gang of Four MVC. The three core design patterns of MVC (observer, composite, and strategy) are embedded in Maria’s Model, View, and Controller objects. Other patterns traditionally included in MVC implementations (e.g. factory method and template) make appearances too.
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Top functions reviewed by kandi - BETA
- generate string from holder
- Escapes quotes around a string .
- Returns a boolean indicating whether the element has a className .
- Check if an hour is a valid hour .
- Returns true if a minute minutes is a valid number
- Create a RegExp instance .
- Create a bundle object
- Determine if the property is host method
- Initializes the set set .
- Formats an integer to a number .
maria Key Features
maria Examples and Code Snippets
Community Discussions
Trending Discussions on maria
QUESTION
I would like to extract three letters of each string for each row in df as below
Exampe:
...ANSWER
Answered 2022-Mar-27 at 00:47You can try this with dplyr::rowwise(), stringr::str_split() and stringr::str_sub():
QUESTION
The title might be confusing, I didn't know how to put my thoughts into words.
Let me explain that simple example. Given the following table...
...ANSWER
Answered 2022-Mar-24 at 18:12This is possible by returning the index of Cypress' .each() command. Assuming that there is a 1:1 correlation between the index position in each row, something like the following should work...
QUESTION
I have a dummy dataframe with four columns.
...ANSWER
Answered 2022-Mar-02 at 15:03Here is one possibility using filter and dplyr:
First we filter for Eye_color == Blue but only if one row contains ´Blue`.
QUESTION
I'm trying to get a list of column names that have been added after the initial csv load. If I am not updating the variable after column names are added, then how are they being added to the variable?
I would expect that only Name and Age would get printed from my_cols but it is printing IsJon as well
...ANSWER
Answered 2022-Mar-01 at 23:34There are at least two things going on here:
R is inherently lazy with objects, and when you create
my_cols <- colnames(df), it isn't changing anything so it does not create a duplicate vector of names. The moment you do something to the vector of names that "could" be changing it, R copies the vector from the frame's attributes and creates a new one, thereby not changing when the original frame is updated.data.tabletends to do things in-place with its referential semantics, so when it adds a column, the internal storage of column names is appended in-place, contrary to R's normal way of doing things. Normally,data.framechanges creates a new vector of names when you add one.C.f.,
base::data.frame, adding a column creates a new vector of column names, therefore ourmy_colsdoes not magically stay updated:
QUESTION
I'm trying to read a file and put the values in a Struct to sort then, but my code isn't working.
...ANSWER
Answered 2022-Feb-26 at 01:35You can use fscanf() to read file & populate the structure.
QUESTION
She is Mary. Ella es Maria.
She is Mary." Ella es Maria."
She is Mary." Ella es Maria."
Hello!. Hola!.
Hello.! Hola.!
Hello! Hola!
How are you?. Como estas?.
How are you? Como estas?
ANSWER
Answered 2022-Feb-21 at 19:28Try:
QUESTION
I have a file separated by semicolons in which one of the variables of type character contains semicolon inside it. The readr::read_csv2 function splits the contents of those variables that have semicolons into more columns, messing up the formatting of the file.
For example, when using read_csv2 to open the file below, Bill's age column will show jogging, not 41.
File:
...ANSWER
Answered 2022-Feb-16 at 02:27You can use the read.csv() function. But there would be some warning messages (or use suppressWarnings() to wrap around the read.csv() function). If you wish to avoid warning messages, using the scan() method in the next section.
QUESTION
What is the best way to split a column in a df with values as dictionary (some lines does not have all values) to new columns?
From:
...ANSWER
Answered 2022-Jan-29 at 20:11You can use json_normalize column "a" and join it back to the DataFrame:
QUESTION
I know there is a few questions on SO regarding the conversion of JSON file to a pandas df but nothing is working. Specifically, the JSON requests the current days information. I'm trying to return the tabular structure that corresponds with Data but I'm only getting the first dict object.
I'll list the current attempts and the resulting outputs below.
...ANSWER
Answered 2022-Jan-20 at 03:23record_path is the path to the record, so you should specify the full path
QUESTION
I'm trying to transform a flat list of persons into a structured tree of ancestry.
The source array of persons looks like this:
...ANSWER
Answered 2022-Jan-07 at 03:37You are correct in the assumption that a general solution will involve some recursive calls (or a queue of candidates to expand until the queue is empty).
The output structure levels alternate between:
- a person with partnerships
- partnerships that contain a partner and children (each child is then again a 1.)
To make things simpler we can just model the 2 steps above with 2 separate functions. I chose the names expandPerson and expandPartnership.
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