method-chaining Questions
3
Solved
Function Annotations: PEP-3107
Background: I am PyCharm user w/CPython 3.4x on Linux. I find it helps to annotate function parameters and return types. The IDE can better hint when I use these meth...
Hygienic asked 16/11, 2014 at 5:37
4
As we all know, lodash-es is built with a more modular syntax for supporting tree shaking by build tools.
However, chain related features means some functions are attached to a object/prototype ch...
Newcomb asked 2/8, 2017 at 13:25
4
I wanted to know the exact difference between method chaining and fluent interface.
As I understand it, method chaining is just running the methods of previous method return objects while avoiding ...
Tarpley asked 26/7, 2017 at 9:7
4
Solved
In C#, with LINQ, if I have en enumeration enumerable, I can do:
// a: Does the enumerable contain an item that satisfies the lambda?
bool contains = enumerable.Any(lambda);
// b: How many items s...
Proselytism asked 20/8, 2012 at 17:15
1
So let's say I have this MWE code:
# see below for full code - not important here
class RealEstate; attr_accessor :name; attr_accessor :living_space; attr_accessor :devices; def initialize(name, li...
Slight asked 19/7, 2023 at 9:5
20
Solved
Method chaining is the practice of object methods returning the object itself in order for the result to be called for another method. Like this:
participant.addSchedule(events[1]).addSchedule(eve...
Oreopithecus asked 9/7, 2009 at 13:44
3
Solved
If a 3rd party requests an argument attachments in a method, how may I avoid using an if and break method chaining, knowing that my argument may be null? The method has the following definition.
/...
Miocene asked 27/4, 2020 at 22:27
4
For a single level indexed column I would do the following
arrays = [['one', 'two', ]]
tuples = list(zip(*arrays))
index = pd.MultiIndex.from_tuples(tuples, names=['first', 'second'])
df = pd.Data...
Rolph asked 11/5, 2017 at 14:34
2
What's the most fluent (or easy to read) method chaining solution for transforming columns in Pandas?
(“method chaining” or “fluent” is the coding style made popular by Tom Augspurger among others....
Cycling asked 14/5, 2022 at 10:33
17
Solved
Is it possible to chain static methods together using a static class? Say I wanted to do something like this:
$value = TestClass::toValue(5)::add(3)::subtract(2)::add(8)::result();
. . . and obv...
Norvan asked 24/9, 2008 at 3:32
3
Solved
If Array.prototype.filter returns an array, why can't I invoke push() on this return value immediately?
Example:
var arr = ["a", "ab", "c", "ad"];
var arr2 = arr.filter(function(elmnt) { return e...
Crean asked 21/2, 2014 at 11:29
5
Solved
(not to be confused with itertools.chain)
I was reading the following:
http://en.wikipedia.org/wiki/Method_chaining
My question is: what is the best way to implement method chaining in python?
H...
Softwood asked 29/8, 2012 at 7:34
5
Solved
I have a bunch of useful functions that I have collected during my whole life.
function one(num){
return num+1;
}
function two(num){
return num+2;
}
I can call them with two(two(one(5)))
But...
Pinchhit asked 18/2, 2012 at 4:7
4
I think there is something that i'm missing about method chaining. To me it feels incomplete.
Method chaining works by having each method return this so that another method on that object can be ca...
Directorate asked 16/10, 2021 at 13:15
4
Solved
I come from an R background and I'm trying to replicate the mutate() function from dplyr in pandas.
I have a dataframe that looks like this:
data = {'name': ['Jason', 'Molly', 'Tina', 'Jake', '...
Fatherland asked 22/8, 2019 at 12:51
5
Solved
Not in terms of readability, naturally, since you can always arrange the separate methods into separate lines. Rather, is it dangerous, for any reason, to chain an excessively large number of metho...
Therapy asked 17/5, 2010 at 13:0
1
Solved
Coming from a SQL development background, and currently learning pyspark / python I am a bit confused with querying data / chaining methods, using python.
for instance the query below (taken from '...
Ballplayer asked 21/9, 2020 at 18:41
10
Solved
I am using PHP 5 and I've heard of a new featured in the object-oriented approach, called 'method chaining'. What is it exactly? How do I implement it?
Vlada asked 16/9, 2010 at 6:4
3
Solved
I found this method chaining in python, but even with it I couldn't understand method chaining in Python.
Here the goals are two: solve the coding problem and understand method chaining (given tha...
Sporran asked 23/1, 2017 at 23:33
1
I have a very complex object i am using to mock out a DataTable() object for the purposes of testing.
const obj = {
DataTable: () => {
return {
columns: () => {
return {
data: () =>...
Yorgo asked 23/4, 2020 at 20:7
1
Solved
Is there a null propagation operator ("null-aware member access" operator) in Python so I could write something like
var = object?.children?.grandchildren?.property
as in C#, VB.NET and Ty...
Schlimazel asked 5/1, 2020 at 12:46
2
Solved
I've started to learn functional programming and while chaining methods looks great (in my opinion) in normal cases, it really gets ugly when dealing with async/await
await (await (await CosmosDbR...
Venosity asked 10/10, 2018 at 9:50
3
Solved
I was wondering if I can used pandas .drop method to drop rows when chaining methods to construct a data frame.
Dropping rows is straight forward once the data frame exists:
import pandas as pd
...
Profusion asked 27/9, 2019 at 12:19
5
Solved
In StringBuilder class I can do like this:
StringBuilder sb = new StringBuilder();
sb.append( "asd").append(34);
method append returns StringBuilder instance, and I can continuosly call that.
M...
Perambulate asked 18/12, 2010 at 11:51
3
Solved
I am wondering how to chain my custom functions and maintain context of 'this'.
Example:
$.fn.foo = function() {
var html = '<div class="foo"></div>';
if ($(this).hasClass(somthing)...
Hedrick asked 23/6, 2016 at 13:10
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