Chaining is an object-oriented programming technique where methods return the object on which they were called so that another method may be called on the same object, thus forming a method chain.
Questions tagged [chaining]
1000 questions
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votes
3 answers
How to chain animation in android to the same view?
I got some text views and I want to make the buzz effect of MSN.
My plan is:
take the view, let say 10dip to the left,
take it back to its start position
after that take it 10dip up
then back
down back
left... and so on.
My point is, I have some…
Lukap
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How to run a promise
I know that't very silly, but how to start a promise chain? I have, for example,
var p = new Promise(function(resolve,reject) {
setTimeout(function() {
return resolve("Hi from promise after timeout");
},1000);
});
How to run it? It should…
Kasheftin
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How do I chain groovy's spaceship operator for multilevel sorting?
Groovy has the spaceship operator <=> which provides an easy way to implement comparisons. How can I chain it in a groovier way then the code below? In this example I want to compare the items by price first and then by name if both have the same…
Leonard Brünings
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jQuery chaining performance
Are these equivalent in term of speed ?
$(this).attr("date",date);
$(this).attr("date_start",date_start);
$(this).attr("heure_start",heure_start);
or
$(this).attr("date",date).attr("date_start",date_start).attr("heure_start",heure_start);
Even if…
commandos
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5 answers
Haskell: monadic takeWhile?
I have some functions written in C that I call from Haskell. These functions return IO (CInt). Sometimes I want to run all of the functions regardless of what any of them return, and this is easy. For sake of example code, this is the general…
Mark Rushakoff
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5 answers
JS ES6 Promise Chaining
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 test has resolved and pass the resolve data to…
Elliot
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Angular2 - How to chain async service calls (http requests) in a component?
I have a component which first need to call a service that POST something. Then in the same component I want to wait until the POST is done, to call another service which GETs data.
How can I make the GET call wait for the POST call to finish?
In…
Sojye
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ostream chaining, output order
I have a function that takes an ostream reference as an argument, writes some data to the stream, and then returns a reference to that same stream, like so:
#include
std::ostream& print( std::ostream& os ) {
os << " How are you?" <<…
LowTechGeek
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Code Hinting custom functions/objects/constants, and on chaining, commentary in Adobe Dreamweaver CS5
In Dreamweaver CS5 there's something called Code Hinting (let's call it CH for short).
CH has a bunch of information about functions, constants and objects built in the core library.
When you press CTRL+SPACEBAR or begin structuring a statement…
ShadowScripter
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3 answers
Using values from previously chained thenCompose lambdas in Java 8
The Java 8 coding style preferred by my colleagues is chaining asynchronous calls all the way through, e.g.
CompletionStage someMethod() {
return doSomething().thenCompose(a -> {
// ...
return b;
}).thenCompose(b -> {
//…
Andrew Cheong
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Angular2 - Cannot read property 'subscribe' of undefined in nested call
I have looked at a number of resources including this, this and this, but I have not been able to achieve the desired result.
All I'm trying to do is authenticate a user (using firebase) and then once authenticated, load up their profile and store…
benscabbia
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10
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BeanUtils not works for chain setter
e.g.
class tester
{
@Test
public void testBeanUtils() throws InvocationTargetException, IllegalAccessException, NoSuchMethodException
{
Stranger stranger = new Stranger();
BeanUtils.setProperty(stranger,"name","wener");
…
wener
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How do you use underscore's chain method to return the first item in a multidimensional array?
Say I have an array of arrays, and I want to return the first element of each array within the array:
array = [[["028A","028B","028C","028D","028E"],
["028F","0290","0291","0292","0293"],
["0294","0295","0296","0297","0298"],
…
Chris Matta
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Python: jQuery-like function chaining?
I couldn't find anything on this subject on Google, so I think I should ask it here:
Is it possible to chain functions with Python, like jQuery does?
['my', 'list'].foo1(arg1, arg2).foo2(arg1, arg2).foo3(arg1, arg2) #etc...
I am losing a lot of…
Blender
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How to write this better? Ruby Sequel chaining OR
In SQL it should look like this:
SELECT * FROM `categories_description_old` WHERE ((`categories_description` = '') OR (`categories_name` = '') OR (`categories_heading_title` = ''))
My (ugly) solution:
conditions = [:categories_name,…
ipsum
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