keyhole | Survey Your Mongo Land - MongoDB Performance Analytics | Analytics library

 by   simagix Go Version: v1.3.2 License: Apache-2.0

kandi X-RAY | keyhole Summary

kandi X-RAY | keyhole Summary

keyhole is a Go library typically used in Analytics, MongoDB, Grafana applications. keyhole has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Keyhole is a tool to explore MongoDB deployments. Start with Survey Your Mongo Land.

            kandi-support Support

              keyhole has a low active ecosystem.
              It has 331 star(s) with 58 fork(s). There are 18 watchers for this library.
              It had no major release in the last 12 months.
              There are 1 open issues and 55 have been closed. On average issues are closed in 12 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of keyhole is v1.3.2

            kandi-Quality Quality

              keyhole has no bugs reported.

            kandi-Security Security

              keyhole has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              keyhole 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

              keyhole releases are available to install and integrate.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of keyhole
            Get all kandi verified functions for this library.

            keyhole Key Features

            No Key Features are available at this moment for keyhole.

            keyhole Examples and Code Snippets

            No Code Snippets are available at this moment for keyhole.

            Community Discussions


            How do you create a feathered "Circle wipe" animation in iOS?
            Asked 2020-Sep-09 at 10:13

            My question requires quite a bit of explanation. If you want to skip to the question, look for the bold "Question:" towards the end.

            It's fairly easy to create a "circle wipe" animation in iOS or Mac OS using a Core Animation and masks.

            One way is to install a CAShapeLayer as a mask on a view (typically an image view), and installing a circle in the shape layer, and animating the circle from 0 size to large enough to cover the whole image (r = sqrt(height^2 + width^2)

            Another way is to use a radial CAGradientLayer as a mask, set up the center of the gradient as an opaque color, and have a sudden transition to clear just beyond the corners of the image. You then animate the "positions" values of the gradient layer to move the clear color in to the center of the image.

            Both of these approaches create a sharp-edged "circle wipe" that causes the image to shrink to a point and disappear.

            That effect looks like this:

            The classic cinematic circle wipe animation has a feathered edge, however, rather than a sharp border. The outer edge of the circle is completely transparent. As you move in towards the center the image becomes more and more solid over a fairly short distance, and then the image is completely opaque from there into the center. As the circle shrinks, the thickness of the transition from transparent to opaque remains constant, and the circle stinks down to a point and disappears. (The mask is a circle is opaque in the middle and has a slightly blurred edge, and the radius of the circle shrinks to 0 while the thickness of the blurred edge remains constant.)

            Here is an example of an old school circle wipe. This is technically an "Iris Out" where the transition is to black, but the idea is the same:


            I have no idea how to achieve a circle wipe with a feathered edge using a shape layer as a mask. Shape layers are always sharp-edged. I could get fairly close by using a shape layer where the circle is stroked with 50% opacity, and the middle of the circle is filled with a color at 100% opacity, but that wouldn't get the smooth transition from transparent to opaque that I'm after.

            Another approach I've tried is using a radial gradient with 3 colors in it. I set the inner colors as opaque, and the outer color as clear. I set the location of the outer color as > 1 (say 1.2), the middle location to 1, and the inner location to 0. The locations array contains [1.2, 1.0, 0] That makes the whole part of the mask that covers the image opaque, with a feathered transition to clear that happens past the edges of the image.

            I then do an animation of the locations array in 2 steps. In the first step, I animate the locations array to [0, 0, 0.2]. That causes a band of feathering to move in from the corners and stop at 0.2 from the center of the image.

            In the 2nd step, I animate the locations array from [0, 0, 0.2] to [0,0,0]. That causes an inner, transparent-to-opaque center to shrink to a point and disappear.

            The effect is ok, and if I run it with a narrow blur band and a fast duration, it looks decent, but it's not perfect.

            Here is what it looks like with a blur range of 0.2, and a duration of (I think) 0.25 seconds:

            If I introduce a pause between the animation steps, however, you can see the imperfections in the effect:

            Question: Is there a way to animate a circle with a small blur radius (5 points or so) from the full size of a view down to 0 using Core Animation?

            The same question applies to other types of wipe animations as well: Keyhole, star, side wipe, box, and many others. For those, the radial gradient trick I'm using for a feathered circle wipe wouldn't work at all. (You create those specialized wipe animations using a CAShapeLayer that's the shape you want to animate, and then adjust it's size from large to small.

            It would be easy to create a static blurred circle (or other shape) by first drawing a circle and then applying a Core Image blur filter to it, but there's no way to animate that in iOS, and the CI blur filter is too slow on iOS even if you could.

            Here is a link to the project I used to create the animations in this post using the 3-color radial gradient I describe:


            Based On James' comment, I tried using a shape layer with a shadow on it as a mask. The effect is on the right track, but there is still a stark transition from the opaque part of the image to the mostly transparent part which is masked by the shadow layer. Even with a shadow opacity of 1.0 the shadow is still mostly transparent. Here's what it looks like:

            Making the line color of the circle shape partly transparent helps some, and gives a transition between the opaque part of the image and the mostly transparent shadow. Here's the image above but stroking the shape layer at a line width of 2 points and an opacity of 0.6:

            Edit #2: SOLVED!

            James' idea of using a shadowPath is the solution. You don't want anything in your mask layer other than a shadowPath. If you do that you can use the shadowRadius property to control the amount of blurring, and smoothly animate a shadow path from a circle that fully encloses the view down to a vanishing point all in one step.

            I've updated my github project at to include both the radial gradient animation and the shadowPath animation for comparison.

            Here is what the finished effect looks like, first with a 5 pixel blur radius:

            And then with a 30 pixel blur radius:



            Answered 2020-Sep-09 at 10:13

            You could use the shadowPath on a CAShapeLayer to create a circle with a blurred outline to use as the mask.

            Create a shape layer with no fill or stroke (we only want to see the shadow) and add it as the layer mask to your view.



            Java Swing jLabel java.lang.NullPointerException
            Asked 2020-Aug-26 at 20:42

            I have a class Hangman and one class GUI. Hangman class for the process. So, I want to passing the value String form Hangman class to jLabel in GUI. When I run the project and I am strungling in java.lang.NullPointerException even I wrote the right code. When user click start. The value from class Hangman will show to the jLabel

            Hangman class



            Answered 2020-Aug-26 at 18:32

            It seems that in the GUI class you declare a member variable, Hangman hangman, but you never initialize it. Therefore, the code jLabelGuess.setText(hangman.resultstring); and similar calls will result in a null pointer exception.



            My Discord.js bot is running (online and shows in console) but it won't respond to commands
            Asked 2020-Feb-12 at 16:45

            So, one day I was using TeamViewer to connect to my RPi3 and told it to reboot. As soon as it finished, I connected to the pi, started the bot, and it looked like it was starting up properly.

            When I went to send a command on discord, the bot didn't respond. The bot is still running though.

            I tried changing some of the code, but nothing changed.

            Here's the code:



            Answered 2020-Feb-12 at 16:45

            Your problem is lack of blocking of your if statement.



            Why do I get a syntax error when creating a PostgreSQL function?
            Asked 2019-Aug-02 at 18:36

            I am trying to create a function in PostgreSQL using this query:



            Answered 2019-Aug-02 at 18:36

            As documented in the manual PL/pgSQL requires a BEGIN ... END block:



            How to strech header across entire page using flexbox and use responsvise screenstate
            Asked 2019-Jun-30 at 12:44

            I'm mainly trying to stretch my navigation bar across the entire page using flexbox. I want the design to be responsive so that the layout stays the same for screen sizes between 640-1280 px.

            I've read about similar questions here and tried to implement some answers but it doesn't seem to work.

            My codepen (not allowed to change anything in the html part):




            Answered 2019-Jun-30 at 12:44

            You are using CSS Grid in your code now. Possibly, you forgot to add the navigation element to your grid with using of



            PHP signup form not working properly when checking password repeat
            Asked 2019-Feb-13 at 18:30

            When I attempt to test my signup errors, all of them work except for the password/password repeat as if I try to submit it into the data base, the page gives me errors

            Notice: Undefined variable: stmt in C:\xampp\htdocs\Presence\includes\ on line 85

            Warning: mysqli_stmt_close() expects parameter 1 to be mysqli_stmt, null given in C:\xampp\htdocs\Presence\includes\ on line 85

            my Signup PHP page code



            Answered 2019-Feb-13 at 17:01

            Change this part of code



            Header not changing URL if one input box was filled
            Asked 2019-Feb-09 at 18:59

            I've been working on a website using html, css, and PHP. Currently I'm trying to make it so when a person tries to register, but for example leaves the Username empty, the URL Error should be something like http://localhost/Presence/PresenceSignup.php?error=emptyfields%uid=&mail=123123. But the URL just stays as http://localhost/Presence/PresenceSignup.php?error=emptyfields%uid=&mail=



            Answered 2019-Feb-09 at 18:32

            It should be & instead of % and $_POST instead of $_post. try this:



            Test if each line in a file contains one of multiple strings in another file
            Asked 2018-Aug-25 at 16:37

            I have a text file (we'll call it keywords.txt) that contains a number of strings that are separated by newlines (though this isn't set in stone; I can separate them with spaces, commas or whatever is most appropriate). I also have a number of other text files (which I will collectively call input.txt).

            What I want to do is iterate through each line in input.txt and test whether that line contains one of the keywords. After that, depending on what input file I'm working on at the time, I would need to either copy matching lines in input.txt into output.txt and ignore non-matching lines or copy non-matching lines and ignore matching.

            I searched for a solution but, though I found ways to do parts of what I'm trying to do, I haven't found a way to do everything I'm asking for here. While I could try and combine the various solutions I found, my main concern is that I would end up wondering if what I coded would be the best way of doing this.

            This is a snippet of what I currently have in keywords.txt:



            Answered 2018-Aug-25 at 10:43

            1. Assuming the content of keywords.txt is separated by newlines:



            Incorrect subtract result using Boost Polygon
            Asked 2017-Nov-09 at 21:11

            I have the following two input polygons for which I want to calculate a subtracted polygon:




            Answered 2017-Nov-09 at 13:47

            Answering my own question...

            Boost Polygon was written with integer data types in mind. From the documentation:

            In general a data type should define std::numeric_limits and be integer-like. Floating point coordinate types are not supported by all the algorithms and generally not suitable for use with the library at present (

            I suspected this is some kind of precision issue I do not understand fully. Indeed, scaling all input coordinates by a factor of 1000 for example does result in a correct polygon:



            The method x is unidentified for type y
            Asked 2017-Oct-31 at 08:57

            So I am trying to get a random word from a list of words in a Class called Lexicon.



            Answered 2017-Oct-31 at 08:30

            Because getWord() is defined in class Lexicon and not in class Game .


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


            No vulnerabilities reported

            Install keyhole

            You can download it from GitHub.


            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 .
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries

            Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link