chaining Questions

3

I'm using subprocess.Popen with Python, and I haven't come across an elegant solution for joining commands (i.e. foobar&& bizbang) via Popen. I could do this: p1 = subprocess.Popen(["m...
Midtown asked 17/3, 2013 at 22:51

0

I am using Langchain version 0.218, and was wondering if anyone was able to filter a seeded vectorstore dynamically during runtime? Such as when running by a Agent. My motive is to put this dynamic...

4

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Is there any way to write the following statement using some kind of safe navigation operator? echo $data->getMyObject() != null ? $data->getMyObject()->getName() : ''; So that it looks l...
Floatable asked 10/9, 2012 at 12:28

4

Just noticed that there is no function in Python to remove an item in a list by index, to be used while chaining. For instance, I am looking for something like this: another_list = list_of_...
Guaranty asked 4/8, 2013 at 14:30

6

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I want to create a method chaining API in Go. In all examples I can find the chained operations seem always to succeed which I can't guarantee. I therefore try to extend these to add the error retu...
Fineman asked 4/12, 2014 at 15:26

3

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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

7

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I'd like to know how I could throw a "final" Exception, containing a detailed message with all the detailed messages of a number of chained exceptions. For example suppose a code like thi...
Virginium asked 13/4, 2013 at 11:24

5

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The output of this program: #include <iostream> class c1 { public: c1& meth1(int* ar) { std::cout << "method 1" << std::endl; *ar = 1; return *this; } void meth2(int...
Fulvia asked 16/5, 2016 at 11:0

5

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What I have now: var result = $('selector1'); if (result.length == 0) result = $('selector2'); but this defeats chaining. Question is - how do I get same result with JQuery chaining? I can't ...
Blythebm asked 25/10, 2011 at 16:38

10

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Is there a good way to chain methods conditionally in Ruby? What I want to do functionally is if a && b && c my_object.some_method_because_of_a.some_method_because_of_b.some_meth...
Lintel asked 25/11, 2009 at 14:18

6

After searching for quite some time, I still haven't found what I'm looking for. There's a fair amount of examples that either require creating a new instance, or only have functions that don't r...
Tulatulip asked 27/1, 2016 at 0:23

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I want to apply several color filters in chain to a drawable. Is that possible? Or maybe to create a filter that is the combination of the filters I want to apply. For example, I would like: Draw...
Marje asked 2/5, 2013 at 19:51

4

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I want to achieve method chaining in Java. How can I achieve it? Also let me know when to use it. public class Dialog { public Dialog() { } public void setTitle(String title) { //Logic t...
Colossians asked 17/1, 2014 at 7:32

1

I am writing a module aims at preparing a query before calling it to database. The code in vanilla javascript worked pretty well, but when I tried to write it in Typescript, I got the error: Type o...
Sassoon asked 10/7, 2020 at 11:22

3

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Sorry - very newbie question. I have a number of separate intents (let’s call them intent1, intent2, intent3, etc) which constitute a basic FAQ chatbot. I want users to be able to trigger these i...
Adali asked 1/8, 2019 at 16:6

4

I'm a very new programmer and understand we want to minimize code redundancy so when we update we can make as few changes as possible and also minimize errors. So I have a Student class that I wa...
Cannular asked 2/6, 2016 at 3:31

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I'm trying to implement a set of chained function but somehow I get stuck here. interface ISimpleCalculator { plus(value: number): this; minus(value: number): this; divide(value: number): this;...
Nullity asked 10/12, 2019 at 7:4

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Is there a way in Java to apply a function to all the elements of a Stream without breaking the Stream chain? I know I can call forEach, but that method returns a void, not a Stream.
Reganregard asked 5/5, 2017 at 23:52

3

In javascript, Optional Chaining Operator is supported by the babel plugin. But I can't find how to do this in Typescript. Any idea?
Kato asked 23/8, 2017 at 15:20

1

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How do you chain grafana variables to filter template panels Grafanav6.2.5 Datasource: prometheus Data: Kubernetes metrics I want to be able to select the first variable e.g. Cluster, then select t...
Lesbianism asked 18/9, 2019 at 11:56

3

When I reading this answer, find var g = f.call.bind(f);. I can't understand this with my first sight. So does it has some direct meaning, and has some appropriate usage scenarios? And further wh...
Molal asked 3/7, 2015 at 4:30

2

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How can I filter a pandas series based on boolean values? Currently I have: s.apply(lambda x: myfunc(x, myparam).where(lambda x: x).dropna() What I want is only keep entries where myfunc return...
Cranio asked 11/6, 2019 at 9:18

2

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Imagine that there is a function g I want to implement by chaining sub-functions. This can be easily done by: def f1(a): return a+1 def f2(a): return a*2 def f3(a): return a**3 g = lambda x:...
Halflength asked 12/3, 2019 at 19:8

3

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The Java 8 coding style preferred by my colleagues is chaining asynchronous calls all the way through, e.g. CompletionStage<E> someMethod() { return doSomething().thenCompose(a -> { // ...
Quaquaversal asked 5/10, 2018 at 16:9

5

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I'm trying to learn how to use promises, but am having trouble comprehending the chaining. I assume that with this code, both promises will run. Then when I call test.then() it should know that tes...
Amalita asked 29/2, 2016 at 22:33

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