optimist | Optimist is a commandline option parser for Ruby | Command Line Interface library
kandi X-RAY | optimist Summary
kandi X-RAY | optimist Summary
Optimist is a commandline option parser for Ruby that just gets out of your way. One line of code per option is all you need to write. For that, you get a nice automatically-generated help page, robust option parsing, and sensible defaults for everything you don't specify.
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Top functions reviewed by kandi - BETA
- Parse command line arguments
- Iterates over the arguments .
- Outputs the help text .
- Wrap the string at the end of lines
- Displays the command .
- Create a description
- Create a new command .
- Wrap lines into string
- Resolve the default option values .
- Collects all arguments for a parameter
optimist Key Features
optimist Examples and Code Snippets
Lines of Code : 63
License : No License
Copy#!/usr/bin/env node
import yargs from 'yargs/yargs';
const argv = yargs(process.argv.slice(2)).options({
a: { type: 'boolean', default: false },
b: { type: 'string', demandOption: true },
c: { type: 'number', alias: 'chill' },
d: { type: 'ar #!/usr/bin/env node
var argv = require('yargs/yargs')(process.argv.slice(2))
.usage('Usage: $0 [options]')
.command('count', 'Count the lines in a file')
.example('$0 count -f foo.js', 'count the lines in the given file')
.alias('f', $ myapp --help
$ myapp init
$ myapp remote --help
$ myapp remote add base http://yargs.js.org
$ myapp remote prune base
$ myapp remote prune base fork whatever
myapp/
├─ cli.js
└─ cmds/
├─ init.js
├─ remote.js
└─ remote_cmds/
├─ add. Community Discussions
Trending Discussions on optimist
QUESTION
I'm using HTML, CSS and JavaScript to build my website. I want to add a Darkmode switch button, so by clicking, it will toggle to Dark/ Light mode, but my JavaScript script applies only for one css style - body. But actually, I have many div's, which are light, but they are not changed by color.
Here's my HTML code (with JS
ANSWER
Answered 2022-Apr-15 at 19:26Just add the class dark-mode to your body tag with JavaScript, then define all your dark styles with .dark-mode in front of them, like this:
QUESTION
I saw in the documentation the example of optimistic lock and it works:
...ANSWER
Answered 2022-Apr-11 at 08:29As of jOOQ 3.16, jOOQ's optimistic locking is an UpdatableRecord only feature, meaning it applies to jOOQ-generated SQL queries that arise from your insert(), update(), store(), merge(), delete() calls on your record. It does not apply to any other queries.
In a future version of jOOQ, there might be a re-design of this functionality to use the new jOOQ 3.17 feature called "client side computed columns" (#9879). The re-design is tracked as #13339. It may or may not ship with jOOQ 3.17. Once implemented, your arbitrary DML statement will be transformed in order to implement optimistic locking semantics.
QUESTION
In my app, I have two tabs. The second tab is shown or hidden based on some condition. I find if there is a sheet being presented in the second tab when the tab is to be hidden, the sheet can't be dismissed.
The issue can be consistently reproduced with the code below. To reproduce it, click tab 2, then click "Present Sheet", then click "Hide Tab 2". You will see the sheet isn't removed, though the tab containing it (that is, tab 2) has been removed (you can drag the sheet down to verify it).
It seems a SwiftUI bug to me. Does anyone know how to work around it? I'm close to finish my app but hit this unexpected issue :( Any help will be much appreciated.
...ANSWER
Answered 2022-Mar-30 at 16:20Well, here we see conflict of actions (due to racing): async sheet closing (due to animation) and sync tab removing.
Here are possible approaches:
- delay tab removing after sheet closed (implicit way)
QUESTION
I'm trying to learn about the Meteor build process to improve it's performance for my dockerized Meteor app. I'm finding that if I run meteor build build --directory --server-only twice, back to back, I get an error about not being able to parse json on the second run.
Here's the successful first run:
...ANSWER
Answered 2022-Mar-23 at 02:22What happens is that you produce your built app but not bundle it (using the --directory flag).
Therefore you have extra JS files in your file structure.
And in your attempts, they are mixed with your Meteor project structure, in a build folder (when you use command meteor build build --directory) or directly merged (meteor build .. --directory).
Therefore, on the next build run, Meteor picks these extra JS files as if they were part of your source code (eager loading), and fails, as suggested in the warning message:
The output directory is under your source tree. Your generated files may get interpreted as source code! Consider building into a different directory instead meteor build ../output
It would have worked in your next attempt if you had specified an explicit sibling build folder, instead of just the parent folder (which therefore puts files directly in your Meteor project root), e.g. meteor build ../siblingFolder
Another possible workaround is to use a build folder name starting with a dot ., so that Meteor ignores it on the next runs when it looks for source code, e.g. meteor build ./.build
See special directories docs:
The following directories are also not loaded as part of your app code:
- Files/directories whose names start with a dot, like
.meteorand.git
QUESTION
I'm trying to preset a property of an object which is passed as an argument to a function. This way i don't have to set this specific property as it is already provided when i call this function later.
The use case is to set the version for api calls.
withApiVersion
ANSWER
Answered 2022-Mar-04 at 12:33You can use Omit to take out some props from Arg. Also Arg should be inferred on the first function as it comes from the function. You don't need to capture the actual type of the function, you are interested in the result and the argument, so use those as your type parameters:
QUESTION
I'm starting my journey in D from C++. In C++ passing by reference or value is quite explicit, but in D it seems to vary between structs and classes.
My question is how can I force a return by reference?
I have a simple XmlNode class for building Xml trees (which is a lift from my C++ code):
...ANSWER
Answered 2022-Mar-01 at 15:26 auto n = root.addChild("Level 1");
QUESTION
I am using optimistic update react query, here i am increasing the followers and plus updating the following state right below is my code:
Everything is working as it should but when the error comes then previousSnapshot and previousUserData is not holding the previous value it is again and again returning the mutated or the updated data in the error block, it is supposed to return the previous state but it is not, please let me know what i am doing wrong here.
...ANSWER
Answered 2022-Feb-19 at 07:13it's because you are mutating the original data. You only create a shallow copy:
QUESTION
In reservation system, only 5 different user can create bookings. If 100 user call booking api at same time than how to handle concurrency with locking. I am using nodejs with mongodb. I went through mongo concurrency article and transactions in mongodb, but cannot find any sample coding solution with locking.
I have achieved solution with Optimistic concurrency control (when there is low contention for the resource - This can be easily implemented using versionNumber or timeStamp field).
Thank you in advance for suggesting me solution with locking.
Now the algorithm is:
Step 1: Get userAllowedNumber from userSettings collection.
...ANSWER
Answered 2021-Oct-17 at 05:57I had deep discussion about locking with transaction in mongodb community. In the conclusion, I learn and found the limitation of transaction. There is no lock we can use to handle concurrent request for this task.
You can see the full Mongodb community conversation at this link https://www.mongodb.com/community/forums/t/implementing-locking-in-transaction-for-read-and-write/127845
Github demo code with Jmeter testing shows the limitation and not able to handle concurrent request for this task. https://github.com/naisargparmar/concurrencyMongo
New suggestion are still welcome and appreciate
QUESTION
I was trying to make two template for my projects details and blog post pages, but due to my lake of experience with Graphql & Gatsby I have managed to make it work for my projects, project details and blog posts but I have a bug which I couldn't find on my blog posts article template makes it not working??
here is my .md front matter
...ANSWER
Answered 2022-Feb-07 at 13:32There are a few things weird in your code that shouldn't be working despite your said it does.
In React, all components must be capitalized, otherwise, React will interpret them as HTML elements, and because normally a component name doesn't match an HTML tag, it will break because it won't exist.
In your case, both templates must be renamed to:
QUESTION
I have an Azure function app running under a Consumption plan, with functions that are triggered with the EventGridTrigger, and an Event Grid Topic that is triggering the functions. I'm relying on the retry functionality to increase reliability. If the function doesn't acknowledge the event (via a return from the function), I'm seeing that the event is re-delivered. So far so good.
I'm using EF Core with SQL Server, with a timestamp/row version column for concurrency management. More on that in a moment.
The documentation outlines that the event grid has 'at-least-once' delivery. This implies that the consumers of the events should be idempotent. We have a multi-step process, and we're making modifications for this process to be idempotent, so we're thinking about the various situations. This question involves one specific situation.
I'm reading 'at-least-once' to mean that a function could be triggered twice by the same event, and that an event could be processed by two instances of the function at the same time; maybe one is taking a long time, or the grid just delivered it twice.
If this is the case, and two function instances are processing an event at the same time, it's possible that one of them will succeed, and one could fail - either with a concurrency exception, or the function could have some other exception generated by the code or the platform. These platform exceptions are rare, but we HAVE seen indications of this (where the invocation just dies; we've seen this with single invocations, and have seen the event be re-delivered).
We've never seen any indications that an event is processed by two instances at the same time; my question assumes that this is possible, though. In that case, I'm not sure what will happen with the re-delivery:
- 'Successful' instance finishes first, then the second instance doesn't acknowledge the event (through a timeout or unhandled exception).
- 'Failed' instance finishes first by throwing an exception, then the 'successful' instance finishes and acknowledges the event.
In both of these cases, one instance acknowledges the event, the other does not. Does anyone know if the event will be redelivered in any of these cases? Does the order in which these instances run change the answer?
The actual problem is more complex: we're doing a multi-step process, and saving to the database at the end of each step. So the plan is to only allow each step to be processed once. In the case where two instances run at the same time, we're leveraging the concurrency validation in EF Core to prevent the second instance from saving the data when moving to the next 'step'. But we don't know whether to acknowledge the event - because the other instance could encounter a problem in a subsequent step. We're being 'optimistic' in that we think these problems will be rare, but we would like to get as much automatic recovery as possible.
Any insight would be helpful. We really can't change how that multi-step process is done; for one thing, the multiple steps allow us to track the progress.
Thanks in advance.
...ANSWER
Answered 2022-Feb-06 at 01:26I couldn't find anything solid in the documentation. So I ran a few tests myself as I was intrigued by the question. I've also included a potential "solution" to your multistep issue, or rather, that it is not idempotent (yet?). Scroll through the wall of text, it's at the end.
First thoughts are that two instances could run the same event, if only and if the first invocation exceeds the default 30 seconds for response, which is why the "at-least-once" delivery is mentioned. Example:
- Event is published
- Instance A picks up the event
- Instance A runs for more than 30 seconds
- Event is added to retry queue as instance A hasn't replied yet
- Instance A is finished, 35 seconds total elapsed
- Event from retry queue is published after sitting in retry queue for 10 seconds
- Instance B picks up the event
I really think it comes down to the execution duration of the two instances how EventGrid reacts.
According to the documentation for Retry schedule:
If the endpoint responds within 3 minutes, Event Grid will attempt to remove the event from the retry queue on a best effort basis but duplicates may still be received.
This could be interpreted as such that as soon as an instance replies with a successful response EventGrid will attempt to clean out the retry queue (from the example above, instance B should never pick up the event). However, I'm also interested in what happens when instance A fails.
I tried with the following code, which will throw an exception from instance A after a certain delay:
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