strategy | Simulations for Futures and Equities
kandi X-RAY | strategy Summary
kandi X-RAY | strategy Summary
strategy is a package for simulating backtests and generating trades for futures and equities. The main features include:.
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Top functions reviewed by kandi - BETA
- Create a Price object from a metadata folder
- Parse data_folder
- Parse the meta - data file
- Read expiry
- Convert trades to trades
- Convert an instrument to tradeable
strategy Key Features
strategy Examples and Code Snippets
Lines of Code : 87License : Non-SPDX (Apache License 2.0)
Copydef _zero_debias(strategy, unbiased_var, value, decay):
"""Compute the delta required for a debiased Variable.
All exponential moving averages initialized with Tensors are initialized to 0,
and therefore are biased to 0. Variables initialized def _create_distributed_tensor_spec(strategy, tensor_spec):
"""Create a `tf.TypeSpec` for a given strategy and input `tensor_spec`.
Args:
strategy: The given `tf.distribute` strategy.
tensor_spec: `tf.TensorSpec` of a given value. The ba def maybe_merge_call(fn, strategy, *args, **kwargs):
"""Maybe invoke `fn` via `merge_call` which may or may not be fulfilled.
The caller of this utility function requests to invoke `fn` via `merge_call`
at `tf.distribute.Strategy`'s best effor Community Discussions
Trending Discussions on strategy
QUESTION
I have a List that contains entity Timeslot with the following fields:
timeslot_id;day;start_time;end_time.
For example, this list contains two records:
start_timeof the first record equals9:00andend_timeequals10:00.start_timeof second object equals10:00andend_timeequals11:00.
And the second list contains timestamps List:
ANSWER
Answered 2022-Apr-16 at 20:05I've simplified your Timeslot class for this problem (for demonstration purposes) since for this task you primarily concern about the start time and end time of each timeslot.
My approach is to create a set of LocalDateTime objects by extracting the start time from each timeslot that is already taken (represented by your first list).
Then create a stream over the query list and filter the date-time object that are not present in the set. Then create a timeslot using each date-time object as a start time (end time = start time + 1 hour). And collect all the stream elements into a list.
Note: terminal operation toList() creates an immutable list, you can obtain a mutable list by applying collect(Collectors.toList()) instead.
QUESTION
I have the following code with multiple cases:
...ANSWER
Answered 2022-Apr-04 at 12:51While you can certainly try using a Strategy pattern, there is a much simplier way to do this. Instead of the if/else chain you can simply do:
QUESTION
I am having trouble resolving a ReDoS vulnerability identified by npm audit. My application has a nested sub-dependency ansi-html that is vulnerable to attack, but unfortunately, it seems that the maintainers have gone AWOL. As you can see in the comments section of that Github issue, to get around this problem, the community has made a fork of the repo called ansi-html-community located here, which addresses this vulnerability.
Thus, I would like to replace all nested references of ansi-html with ansi-html-community.
My normal strategy of using npm-force-resolutions does not seem to be able to override nested sub-dependencies with a different package altogether but rather only the same packages that are a different version number. I have researched this for several hours, but unfortunately, the only way I have found to fix this would appear to be with yarn, which I am now seriously considering using instead of npm. However, this is not ideal as our entire CI/CD pipeline is configured to use npm.
Does anyone know of any other way to accomplish nested sub-dependency package substitution/resolution without having to switch over to using yarn?
Related QuestionsThese are questions of interest that I was able to find, but unfortunately, they tend to only discuss methods to override package version number, not the package itself.
Discusses how to override version number:How do I override nested NPM dependency versions?
Has a comment discussion aboutnpm shrinkwrap (not ideal):
Other related StackOverflow questions:
...ANSWER
Answered 2021-Oct-29 at 21:01I figured it out. As of October 2021, the solution using npm-force-resolutions is actually very similar to how you would specify it using yarn. You just need to provide a link to the tarball where you would normally specify the overriding version number. Your resolutions section of package.json should look like this:
QUESTION
I am getting this error when I try to sign up a user. After this error, I'm still able to sign in with the user it would've created, but it always shows me this upon registration. Please let me know if there's other information you need. Been stumped on this for a few days.
Here is the callback for the error:
...ANSWER
Answered 2022-Jan-03 at 12:08This seems to a be a known issue with Rails 7 and Devise now. To fix it in the meantime simply add the following line to your devise.rb.
config.navigational_formats = ['*/*', :html, :turbo_stream]
QUESTION
I recently created this post trying to figure out how to reference GitHub Secrets in a GitHub action. I believe I got that solved & figured out and I'm onto a different issue.
Below is a sample of the workflow code as of right now, the issue I need help with is the Create and populate .Renviron file part.
ANSWER
Answered 2021-Sep-01 at 09:23The file is there where you expect to be
QUESTION
I have an odd problem, where I am struggling to understand the nature of "static context" in Java, despite the numerous SO questions regarding the topic.
TL;DR:
I have a design flaw, where ...
This works:
...ANSWER
Answered 2022-Jan-26 at 17:11One way to solve the issue is by parameterizing the ParentDTO Class with its own children.
QUESTION
Suppose that we have a very long array, of, say, int to make the problem simpler.
What is the fastest way (or just a fast way, if it's not the fastest), in C++ to see if an array has more than one common elements in C++?
To clarify, this function should return this:
...ANSWER
Answered 2021-Sep-08 at 08:48(✠Update Below) Insert the array elements to a std::unordered_set and if the insertion fails, it means you have duplicates.
Something like as follows:
QUESTION
I'm currently trying to add a third party script to my Next.js application. The script inserts an iframe directly below the script tag. So I need precise control over where the script tag is located on the page.
I'm currently using next/script because regular script tags are preventing the iframe from rendering. However, the next/script tag seems to relocate the script based on the strategy used: Using beforeInteractive strategy inserts the script into the head. afterInteractive and lazyOnload insert it somewhere near the bottom of the page.
If I have something like the following:
...ANSWER
Answered 2022-Jan-15 at 01:23Here is the somewhat hacky solution I came up with.
QUESTION
In my gitlab CI I always get this hint messages. Yes, I see I have to set git config --global init.defaultBranch main, but everything I'm adding in my stages / jobs of the CI gitlab config is executed after fetching.
ANSWER
Answered 2022-Jan-13 at 16:37As far as i experienced, the only way to disable this message is to set the config globally in the .gitconfig of the user running the gitlab-runner.
This can either be done on the underlying VM if you use the shell-runner or inside the used docker-image when using the docker-runner
Update
Altough it says global, the git-setting is user based. You'll have to set it as the same user that executes the gitlab-runner.
Depending on the configuration, this might be gitlab-runner or a custom user on shell-runners or root when using the docker-executor.
QUESTION
How can I define a Doctrine property in a parent class and override the association in a class which extends the parent class? When using annotation, this was implemented by using AssociationOverride, however, I don't think they are available when using PHP 8 attributes
Why I want to:
I have a class AbstractTenantEntity whose purpose is to restrict access to data to a given Tenant (i.e. account, owner, etc) that owns the data, and any entity which extends this class will have tenant_id inserted into the database when created and all other requests will add the tenant_id to the WHERE clause. Tenant typically does not have collections of the various entities which extend AbstractTenantEntity, but a few do. When using annotations, I handled it by applying Doctrine's AssociationOverride annotation to the extended classes which should have a collection in Tenant, but I don't know how to accomplish this when using PHP 8 attributes?
My attempt described below was unsuccessful as I incorrectly thought that the annotation class would magically work with attributes if modified appropriately, but now I see other code must be able to apply the appropriate logic based on the attributes. As such, I abandoned this approach and just made the properties protected and duplicated them in the concrete class.
My attempt:
Tenant entity
...ANSWER
Answered 2021-Oct-11 at 18:30Override Field Association Mappings In Subclasses
Sometimes there is a need to persist entities but override all or part of the mapping metadata. Sometimes also the mapping to override comes from entities using traits where the traits have mapping metadata. This tutorial explains how to override mapping metadata, i.e. attributes and associations metadata in particular. The example here shows the overriding of a class that uses a trait but is similar when extending a base class as shown at the end of this tutorial.
Suppose we have a class ExampleEntityWithOverride. This class uses trait ExampleTrait:
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