chain Questions

3

Solved

Is it possible to ignore a catch and return back to the chain? promiseA() // <-- fails with 'missing' reason .then(promiseB) // <-- these are not going to run .then(promiseC) .catch(func...
Novak asked 13/4, 2016 at 11:26

22

Solved

How do I make two decorators in Python that would do the following? @make_bold @make_italic def say(): return "Hello" Calling say() should return: "<b><i>Hello</i&gt...
Owl asked 11/4, 2009 at 7:5

3

Like in this other question, I want to create a celery group from a list that's returned by a celery task. The idea is that the first task will return a list, and the second task will explode that ...
Blossomblot asked 29/3, 2017 at 23:45

2

Solved

I want to run a complex task scheduled by beat. Let us assume the default add/mul tasks are defined. @app.on_after_configure.connect def setup_periodic_tasks(sender, **kwargs): sender.add_periodi...
Melanous asked 5/6, 2019 at 12:29

3

Solved

Can you give a more simplified explanation of these two methods chain() and chain.from_iterable from itertools? I have searched the knowledge base and as well the python documentation but i got co...
Meador asked 1/4, 2017 at 0:1

1

In my Spring Boot application, I have: @Configuration @EnableWebSecurity public class WebSecurityConfig extends WebSecurityConfigurerAdapter { ... @Override protected void configure(HttpSecurit...
Rockie asked 29/1, 2016 at 18:45

3

Solved

Lets imagine function like this: function foo(x) { x += '+'; return x; } Usage of it would be like: var x, y; x = 'Notepad'; y = foo(x); console.log(y); // Prints 'Notepad+'. I'm looking fo...
Uniseptate asked 11/10, 2011 at 17:56

12

Solved

I have code like: obj1 = SomeObject.method1(); if (obj1 != null) { obj2 = obj1.method2(); if (obj2 != null) { obj3 = obj2.method3(); if (obj3 != null) { ............ return objN.methodM();...
Dittography asked 21/1, 2013 at 15:50

5

Solved

I'm using Qt and bash over it, need to execute something like: bash: cat file | grep string in Qt: QString cmd = "cat file | grep string"; QProcess *process = new QProcess; process->start(cm...
Clove asked 3/1, 2014 at 10:51

2

I am using zerossl.com website to generate an SSL certificate for my website developer.norght.com I successfully downloaded and installed a certificate from the zerossl.com website as per their doc...
Westberry asked 1/7, 2020 at 18:36

2

If I have many validators against my entity, can I somehow specify one that it stops the rest if it fails? IE: there's no point checking Permissions if it fails NotBlank. Alternatively, if its not...
Neela asked 13/4, 2012 at 4:45

2

My VSCode project is multi-root workspace. That is I have multiple workspaces each in separate directories, each has a .vscode folder. I'm trying to build a workspace with dependencies between eac...
Dithyramb asked 30/7, 2018 at 18:57

5

I'd like to have a function that can use pipe operator as exported from dplyr. I am not using magrittr. df %>% my_function How can I get df name? If I try my_function <- function(tbl){pri...
Archilochus asked 5/5, 2015 at 15:32

2

Solved

I'm using the moq framework by Daniel Cazzulino, kzu Version 4.10.1. I want to moq so i can test a particular part of functionality (below is the simplistic version of the Code i could extract) Th...
Glazunov asked 16/5, 2019 at 10:33

4

Solved

A simple function below: const L = a => L; forms L L(1) L(1)(2) ... This seems to form a list but the actual data is not stored at all, so if it's required to store the data such as [1,2]...
Tricolor asked 11/7, 2018 at 6:57

2

I have a working chain, but when I add apply_async() it only executes the first task. @task(name='run_a', delay=True) def run_a(**kwargs): do_whatever(kwarg['var']) return @task(name='run_b', ...
Gnathic asked 9/4, 2016 at 8:39

1

I am a beginner to Oracle SQL. I am using Oracle SQL developer tool. I have two procedures called p1 and p2. How to execute the procedures one by one in particular time daily using chains concept...
Trudge asked 22/6, 2018 at 6:34

4

I need to chain two MapReduce jobs. I used JobControl to set job2 as dependent of job1. It works, output files are created!! But it doesn't stop! In the shell it remains in this state: 12/09/11 19...
Gelb asked 11/9, 2012 at 17:28

3

Solved

Based on the question here: jQuery chaining and cascading then's and when's and the accepted answer, I want to break the promise chain at a point but haven't yet found the correct way. Ther...
Danika asked 7/4, 2015 at 19:21

1

Solved

I am using RxJava in my android app along with Retrofit to make network requests to a server. I am using RxJavaCallAdapterFactory so I can have my retrofit requests return singles. In my code, the ...
Efrem asked 8/2, 2017 at 6:1

1

I'm taking an online class to learn python and the instructor taught us that chain indexing was not a good idea. However, he failed to tell is the appropriate alternative to use. Suppose I have a ...
Vivacious asked 21/12, 2016 at 0:3

2

Solved

My question is probably pretty basic but still I can't get a solution in the official doc. I have defined a Celery chain inside my Django application, performing a set of tasks dependent from eanch...
Parole asked 21/5, 2014 at 21:15

2

Solved

How do I pass an entire model from one controller to another without using a redirect?
Housemother asked 19/11, 2012 at 15:52

2

Solved

Using the Promises design pattern, is it possible to implement the following: var a, promise if promise.resolve a = promise.responsevalue; if promise.reject a = "failed" AFTER resolution/...
Ptarmigan asked 8/8, 2016 at 13:19

3

Solved

When I route a task to a particular queue it works: task.apply_async(queue='beetroot') But if I create a chain: chain = task | task And then I write chain.apply_async(queue='beetroot') It ...
Bookstall asked 19/2, 2013 at 9:3

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