ff | Flags-first package for configuration | Command Line Interface library

 by   peterbourgon Go Version: v3.3.0 License: Apache-2.0

kandi X-RAY | ff Summary

kandi X-RAY | ff Summary

ff is a Go library typically used in Utilities, Command Line Interface applications. ff has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

ff stands for flags-first, and provides an opinionated way to populate a flag.FlagSet with configuration data from the environment. By default, it parses only from the command line, but you can enable parsing from environment variables (lower priority) and/or a configuration file (lowest priority). Building a commandline application in the style of kubectl or docker? Consider package ffcli, a natural companion to, and extension of, package ff.
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            kandi-support Support

              ff has a medium active ecosystem.
              It has 1122 star(s) with 51 fork(s). There are 18 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 5 open issues and 39 have been closed. On average issues are closed in 22 days. There are 2 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of ff is v3.3.0

            kandi-Quality Quality

              ff has 0 bugs and 0 code smells.

            kandi-Security Security

              ff has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              ff code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              ff is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              ff releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.
              It has 2125 lines of code, 85 functions and 22 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

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            ff Key Features

            No Key Features are available at this moment for ff.

            ff Examples and Code Snippets

            Convert a hexadecimal string to a decimal number .
            pythondot img1Lines of Code : 40dot img1License : Permissive (MIT License)
            copy iconCopy
            def hex_to_decimal(hex_string: str) -> int:
                """
                Convert a hexadecimal value to its decimal equivalent
                #https://www.programiz.com/python-programming/methods/built-in/hex
            
                >>> hex_to_decimal("a")
                10
                >>> hex_  
            Compute the convolution between two matrices .
            pythondot img2Lines of Code : 29dot img2License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def _matrix_conv(self, m1, m2):
                """Matrix convolution.
            
                Args:
                  m1: A dictionary of length k, each element is a n x n matrix.
                  m2: A dictionary of length l, each element is a n x n matrix.
            
                Returns:
                  (k + l - 1)  dictionary   

            Community Discussions

            QUESTION

            Setting an input element property value to default
            Asked 2022-Mar-26 at 13:18

            On a HTML page i have an input with a value attribute which is changed by some library i use. After the user changes the value of the input the value property is changed.

            After some action i want to remove the user provided value property and let the input show the value provided by the attribute again, and from that point on, do that automatically (like it did before the user ever entered a value).

            I looked at some other questions like What is the difference between properties and attributes in HTML? . They all give a descent explanation ofthe difference between property and attribute however nothing to remove the user filled property.

            Things i have tried (with jQuery in FF):

            ...

            ANSWER

            Answered 2022-Mar-26 at 09:34

            I do not know jquery but here's the code in javascript

            Source https://stackoverflow.com/questions/71621603

            QUESTION

            Problem with XML Schema giving Error #3070 The content model is not determinist
            Asked 2022-Mar-21 at 15:00

            I have a framework which parses XML for its configuration. I have removed old 1.0 support and am now trying to parse "validators" config. The content of the validators.xsd is the same (apart from the keyword validators) as in other parts of the framework, which doesn't have any problems. I am only ever told the content model is not determinist hence am finding it hard to problem-solve. If you could point me in the right direction to getting better errors or "sanity-checks" that would be brilliant.

            Here is the XSD configuration along with the matching xml notation being used. I'm not sure what to put here but I am going to give everything cited for clarity.

            validators.xsd

            ...

            ANSWER

            Answered 2022-Mar-21 at 15:00

            So the problem was with the /parts/validator.xsd config containing a duplicate element which was causing the "non-determinist" error. For reference, it is my understanding that this message means you are seeing a duplicate entry or rather an entry that isn't clear on how to proceed to the next element. Hence, not determinist.

            Source https://stackoverflow.com/questions/71497935

            QUESTION

            Given a number, find the sequence to reach it
            Asked 2022-Mar-21 at 10:04

            I am working on this challenge:

            A bot can do either of the 2 instructions:

            • [F]orward: move ahead by +1 and double its speed
            • [B]ack: Stop, change direction and reset its speed.

            The initial speed is 1.

            Given a distance, return a sequence that will satisfy it. The sequence can only have a maximum of 3 'B's. If a solution is not possible with 3 'B's then return empty string.

            For example,

            ...

            ANSWER

            Answered 2022-Mar-21 at 10:04

            The problem with your code was the second turn. Notice that when curr < dist you change direction but not resetting the speed and adding 'B' to the sequence. Changing

            Source https://stackoverflow.com/questions/71532887

            QUESTION

            Making my dictionary comprehension more efficient
            Asked 2022-Mar-16 at 10:35

            I have a list of strings. For example:

            ...

            ANSWER

            Answered 2022-Mar-16 at 10:35

            You can use walrus operator. But list comprehension is not meant to efficient, it's just shorter(I think)

            Source https://stackoverflow.com/questions/70987677

            QUESTION

            Convolution Function Latency Bottleneck
            Asked 2022-Mar-10 at 13:57

            I have implemented a Convolutional Neural Network in C and have been studying what parts of it have the longest latency.

            Based on my research, the massive amounts of matricial multiplication required by CNNs makes running them on CPUs and even GPUs very inefficient. However, when I actually profiled my code (on an unoptimized build) I found out that something other than the multiplication itself was the bottleneck of the implementation.

            After turning on optimization (-O3 -march=native -ffast-math, gcc cross compiler), the Gprof result was the following:

            Clearly, the convolution2D function takes the largest amount of time to run, followed by the batch normalization and depthwise convolution functions.

            The convolution function in question looks like this:

            ...

            ANSWER

            Answered 2022-Mar-10 at 13:57

            Looking at the result of Cachegrind, it doesn't look like the memory is your bottleneck. The NN has to be stored in memory anyway, but if it's too large that your program's having a lot of L1 cache misses, then it's worth thinking to try to minimize L1 misses, but 1.7% of L1 (data) miss rate is not a problem.

            So you're trying to make this run fast anyway. Looking at your code, what's happening at the most inner loop is very simple (load-> multiply -> add -> store), and it doesn't have any side effect other than the final store. This kind of code is easily parallelizable, for example, by multithreading or vectorizing. I think you'll know how to make this run in multiple threads seeing that you can write code with some complexity, and you asked in comments how to manually vectorize the code.

            I will explain that part, but one thing to bear in mind is that once you choose to manually vectorize the code, it will often be tied to certain CPU architectures. Let's not consider non-AMD64 compatible CPUs like ARM. Still, you have the option of MMX, SSE, AVX, and AVX512 to choose as an extension for vectorized computation, and each extension has multiple versions. If you want maximum portability, SSE2 is a reasonable choice. SSE2 appeared with Pentium 4, and it supports 128-bit vectors. For this post I'll use AVX2, which supports 128-bit and 256-bit vectors. It runs fine on your CPU, and has reasonable portability these days, supported from Haswell (2013) and Excavator (2015).

            The pattern you're using in the inner loop is called FMA (fused multiply and add). AVX2 has an instruction for this. Have a look at this function and the compiled output.

            Source https://stackoverflow.com/questions/71401876

            QUESTION

            Cypress- SelectFile() Not working as expected in Chrome
            Asked 2022-Mar-09 at 21:48

            Cypress Version: 9.5.0
            Chrome Version: 98

            Ive been trying to use cy.selectFile() to upload a file in Cypress test. The following code looks as such:

            ...

            ANSWER

            Answered 2022-Feb-22 at 03:39

            Since you are selecting the input with force: true (meaning that the actual input element is hidden from view), one possibility is that perhaps the input that is being referred doesn't have the requirements in place for the selectFile to succeed. Perhaps in Firefox the input type is inferred from context while in Chrome it would need to be explicitly set.

            Have you checked that the element #new-project-photo passed to selectFile satisfies this requirement specifically (from the Cypress docs linked above)?

            a single input element with type="file", or a label element attached to one

            If you could post the element and its context that could help further recreate this scenario and allow testing. Right now from the information available it's not possible to recreate this problem reliably.

            Source https://stackoverflow.com/questions/71072602

            QUESTION

            Fixing Cluttered Titles on Graphs
            Asked 2022-Mar-07 at 19:08

            I made the following 25 network graphs (all of these graphs are copies for simplicity - in reality, they will all be different):

            ...

            ANSWER

            Answered 2022-Mar-03 at 21:12

            While my solution isn't exactly what you describe under Option 2, it is close. We use combineWidgets() to create a grid with a single column and a row height where one graph covers most of the screen height. We squeeze in a link between each widget instance that scrolls the browser window down to show the following graph when clicked.

            Let me know if this is working for you. It should be possible to automatically adjust the row size according to the browser window size. Currently, this depends on the browser window height being around 1000px.

            I modified your code for the graph creation slightly and wrapped it in a function. This allows us to create 25 different-looking graphs easily. This way testing the resulting HTML file is more fun! What follows the function definition is the code to create a list of HTML objects that we then feed into combineWidgets().

            Source https://stackoverflow.com/questions/71244872

            QUESTION

            Why do `(char)~0` and `(unsigned char)~0` return values of different widths?
            Asked 2022-Feb-25 at 18:36

            I bumped into this while writing a program trying to print the constituent byte values of UTF-8 characters.

            This is the program that I wrote to test the various ~0 operations:

            ...

            ANSWER

            Answered 2022-Feb-25 at 18:12

            When passing a type smaller than int to a variadic function like printf, it get promoted to type int.

            In the first case, you're passing char with value -1 whose representation (assuming 2's complement) is 0xff. This is promoted to an int with value -1 and representation 0xffffffff, so this is what is printed.

            In the second case, you're passing an unsigned char with value 255 whose representation is 0xff. This is promoted to an int with value 255 and representation 0x000000ff, so this is what is printed (without the leading zeros).

            Source https://stackoverflow.com/questions/71270043

            QUESTION

            JavaScript filter does not update the React local state
            Asked 2022-Feb-03 at 07:26
            Description of the app

            I am using Ant-transfer for my app. I have two components one is the parent and another is child component. In the child component, I am using the Ant-transfer, Without fetching any data when I play with local state, I can able to transfer the data from one table to another table. And it works as expected.

            My case scenario is

            I have one fixed data. Which contains arrays of objects. From that fixed data, I transfer item from the group table to the target table By using Ant-transfer. After pressing the transfer button(">") which is then called on handleChange function. After triggering the handleChange function, it updates the targetKey local state and does post request.

            Issue

            When an item or items are selected and a post request is made, I retrieve the selected items from the parent component. I filtered the fixed data from the selected items and passed the string id of the items array to the local state. However, when I refresh the page, the fixed data returns to its original state. All items are in the group table, and it does not show select items which should be on the right side of the table. It appears that my filtered function does not work.

            Goal:

            My goal is for selected items to be on the right side and unselected items to be on the left side; if I refresh the page, it should not change.

            Reproduce the ant transfer

            I reproduced Ant-transfer-demo.

            This is my all code ...

            ANSWER

            Answered 2022-Feb-03 at 07:26

            If you need to persist any of the state to localStorage to allow reloading the app then it appears you should persist the targetKeys state.

            Example:

            Source https://stackoverflow.com/questions/70966693

            QUESTION

            How to prevent commits from a feature branch from showing up in the dev branch after the pull request is merged?
            Asked 2022-Jan-28 at 16:50
            What I have done

            In local repo:

            1. git checkout -b feature/db/projectImport dev
            2. make changes
            3. git add . and git commit
            4. git push origin feature/db/projectImport (staying in that branch)

            Now in GitHub:
            5. Click the Compare & pull request button and finally merge with the default merge button, which claim to use --no-ff


            Pull request Image

            What I want to achieve
            • I don't want the commits messages from the feature branch to appear in the commit messages in the dev branch.
            • When I merge the feature branch into dev, the feature branch will retain all its commits but the dev branch will only have the merge commit. Is this possible???
            Related Images from the repo

            Feature branch commits:

            Dev branch commits:

            Note:

            • I am newbie in git. So, my thinking can be wrong. If this is the case, please point out my mistake and tell what is correct.
            • Any suggestion gratefully received. Thanks in advance.
            ...

            ANSWER

            Answered 2022-Jan-28 at 16:50

            As others have pointed out in the comments, what you are looking for is the squash option when you merge the PR in.

            When you squash-merge, that changes what appears on the destination branch, but it does not change what is on the source branch. So on dev, you'll see one commit. But on the feature branch, as long as you don't delete it, you'll continue to see all your original feature commits. And the PR will continue to hold a pointer to that branch.

            Now, that's a bit of a funny workflow to me: when I merge a PR in, I systematically delete the feature branch. But your workflow should work fine too.

            How to do it On GitHub

            Once you have your PR ready to merge, make sure you merge it in using GitHub's "squash and merge" method:

            On the Git CLI

            If you're doing the merge on your own computer, the same operation can be accomplished like this:

            Source https://stackoverflow.com/questions/70894488

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install ff

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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