NLog | NLog - Advanced and Structured Logging for Various NET Platforms

 by   NLog C# Version: v5.2.0 License: BSD-3-Clause

kandi X-RAY | NLog Summary

kandi X-RAY | NLog Summary

NLog is a C# library typically used in Logging, Xamarin applications. NLog has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

NLog consists of multiple packages. Most of the functionality is inside the NLog (core) package. What's inside the packages? See targets and layout renderers overview!.

            kandi-support Support

              NLog has a medium active ecosystem.
              It has 5888 star(s) with 1355 fork(s). There are 278 watchers for this library.
              There were 6 major release(s) in the last 12 months.
              There are 67 open issues and 2524 have been closed. On average issues are closed in 152 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of NLog is v5.2.0

            kandi-Quality Quality

              NLog has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              NLog is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              NLog releases are available to install and integrate.
              Installation instructions are available. Examples and code snippets are not available.
              NLog saves you 503 person hours of effort in developing the same functionality from scratch.
              It has 1182 lines of code, 0 functions and 873 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            NLog Key Features

            No Key Features are available at this moment for NLog.

            NLog Examples and Code Snippets

            No Code Snippets are available at this moment for NLog.

            Community Discussions


            How to solve "Higher version than referenced assembly" message
            Asked 2022-Feb-26 at 08:05

            Am not experienced in C stacks, but am trying to build this DICOM project, it seems it's depending on a 'no-longer' existing project, so I tried to compile mdcm instead to generate the DLLs.

            the generated dlls produce DICOM and Nlog, NLog didn't seem to work with the target project, missing classes etc ... when I installed Nlog version 1.0 using Nuget package manager the missing classes issues got solved but now I get the below error message.

            what are possible solution to this ?



            Answered 2022-Feb-25 at 14:13

            It means a dependency references a version of a package that is greater than the one you have installed into your app but your app reference will "win" since it is a direct reference, hence the error.

            To fix it, you should install/upgrade to version 2 of NLog directly into your app although there might be build/runtime issues with that depending on the changes made in v2.



            Better NLog logger name for F# modules and GetCurrentClassLogger()
            Asked 2022-Feb-09 at 00:40

            When I include NLog.LogManager.GetCurrentClassLogger() at the top of my F# modules, the name of the logger looks something like .$Program. I would have hoped for something like NLogTest.TestModule.

            How can I get a better logger name for my F# modules?

            Here is a complete example:




            Answered 2022-Feb-09 at 00:40

            Here are several options:

            Create the logger inside every module function



            What would the Big O notation be for alphabetically sorting each element in a nested list comprehension
            Asked 2021-Dec-29 at 18:12
            # find all possible sorted substrings of s
            substr = ["".join(sorted(s[i: j])) 
                            for i in range(len(s)) 
                                for j in range(i + 1, len(s) + 1)]


            Answered 2021-Dec-29 at 17:59


            Nlog.config - read only
            Asked 2021-Dec-13 at 22:27

            I installed Nlog from NuGet and tried to make some changes at NLog config. Unfortunately, that file is marked by a padlock. Also it is placed out of the project catalogue (C:\Users\username\.nuget\packages\nlog.config\4.7.13\contentFiles\any\any\NLog.config) and read-only. How should I correctly add that file to the project? Should I copy that and add it manually to the project?



            Answered 2021-Dec-13 at 22:27

            The nlog config file should be carefully located so your resulting build project files load it correctly. In the documentation about the File Location info you see where the programs looks for the Nlog config file.

            You can indeed include it in your project and set the property Copy to Output directory to Copy if newer



            How to Log in F# in a functional way using NLog
            Asked 2021-Nov-21 at 15:55

            I have been looking at logging options and settled on NLog and logging to a database

            I am fairly new to functional programming and have come from a background in C# OOP.

            How would I implement logging in a functional way in F#?
            Do I

            • Create the logger at the top level and just pass it in to every function as I go
            • Access the logger through a static method as needed ( obviously there would be some overhead to instantiating a logger each time - but maybe that's not a big deal )
            • Something else?

            I want to avoid using a commercial logging option just because my projects are quite small.

            Thanks for your time.



            Answered 2021-Nov-20 at 00:43

            As logging is inherently impure there isn't a particularly clean way to do logging that I'm aware of. You have basically identified the two solutions in your question. Which one you use depends on what the logs are being used for.

            For logging to external services I would consider creating an AppContext type which is home to app and user settings as well as providing functions or methods for logging to e.g. a database. This type should be added an extra parameter in your functions or an additional field in your types depending on what makes the most sense.

            For your lowest-level functions rather than changing them all to accept an additional parameter you should consider altering the return type to include the information you want to log and leaving the act of logging to higher level parts of your program.

            For logging to a console, rolling buffer, or other temporary location I think it is fine to create a module which is equivalent to a C# static class and just provide globally accessible logging functions.



            Finding mode for every window of size k in an array
            Asked 2021-Nov-15 at 18:30

            Given an array of size n and k, how do you find the mode for every contiguous subarray of size k?

            For example



            Answered 2021-Nov-15 at 18:30
            This can be done in O(n) time

            I was intrigued by this problem in part because, as I indicated in the comments, I felt certain that it could be done in O(n) time. I had some time over this past weekend, so I wrote up my solution to this problem.

            Approach: Mode Frequencies The basic concept is this: the mode of a collection of numbers is the number(s) which occur with the highest frequency within that set.

            This means that whenever you add a number to the collection, if the number added was not already one of the mode-values then the frequency of the mode would not change. So with the collection (8 9 9) the mode-values are {9} and the mode-frequency is 2. If you add say a 5 to this collection ((8 9 9 5)) neither the mode-frequency nor the mode-values change. If instead you add an 8 to the collection ((8 9 9 8)) then the mode-values change to {9, 8} but the mode-frequency is still unchanged at 2. Finally, if you instead added a 9 to the collection ((8 9 9 9)), now the mode-frequency goes up by one.

            Thus in all cases when you add a single number to the collection, the mode-frequency is either unchanged or goes up by only one. Likewise, when you remove a single number from the collection, the mode-frequency is either unchanged or goes down by at most one. So all incremental changes to the collection result in only two possible new mode-frequencies. This means that if we had all of the distinct numbers of the collection indexed by their frequencies, then we could always find the new Mode in a constant amount of time (i.e., O(1)).

            To accomplish this I use a custom data structure ("ModeTracker") that has a multiset ("numFreqs") to store the distinct numbers of the collection along with their current frequency in the collection. This is implemented with a Dictionary (I think that this is a Map in Java). Thus given a number, we can use this to find its current frequency within the collection in O(1).

            This data structure also has an array of sets ("freqNums") that given a specific frequency will return all of the numbers that have that frequency in the current collection.

            I have included the code for this data structure class below. Not that this is implemented in C# as I do not know Java well enough to implement it there, but I believe that a Java programmer should have no trouble translating it.

            (pseudo)Code: class ModeTracker { HashSet[] freqNums; //numbers at each frequency Dictionary numFreqs; //frequencies for each number int modeFreq_ = 0; //frequency of the current mode



            Sorting an array of integers in nlog(n) time without using comparison operators
            Asked 2021-Nov-04 at 14:49

            Imagine there's have an array of integers but you aren't allowed to access any of the values (so no Arr[i] > Arr[i+1] or whatever). The only way to discern the integers from one another is by using a query() function: this function takes a subset of elements as inputs and returns the number of unique integers in this subset. The goal is to partition the integers into groups based on their values — integers in the same group should have the same value, while integers in different groups have different values. The catch - the code has to be O(nlog(n)), or in other words the query() function can only be called O(nlog(n)) times.

            I've spent hours optimizing different algorithms in Python, but all of them have been O(n^2). For reference, here's the code I start out with:



            Answered 2021-Nov-04 at 14:49

            Let's say you have an element x and an array of distinct elements, A = [x0, x1, ..., x_{k-1}] and want to know if the x is equivalent to some element in the array and if yes, to which element.

            What you can do is a simple recursion (let's call it check-eq):

            • Check if query([x, A]) == k + 1. If yes, then you know that x is distinct from every element in A.
            • Otherwise, you know that x is equivalent to some element of A. Let A1 = A[:k/2], A2 = A[k/2+1:]. If query([x, A1]) == len(A1), then you know that x is equivalent to some element in A1, so recurse in A1. Otherwise recurse in A2.

            This recursion takes at most O(logk) steps. Now, let our initial array be T = [x0, x1, ..., x_{n-1}]. A will be an array of "representative" of the groups of elements. What you do is first take A = [x0] and x = x1. Now use check-eq to see if x1 is in the same group as x0. If no, then let A = [x0, x1]. Otherwise do nothing. Proceed with x = x2. You can see how it goes.

            Complexity is of course O(nlogn), because check-eq is called exactly n-1 times and each call take O(logn) time.



            How to find the rightmost number in the array which is greater or equal to current one in O(N) time?
            Asked 2021-Oct-29 at 02:03

            given an array nums of integers with length n, for each index i, I am trying to find the rightmost index j such that i < j and nums[j] >= nums[i]. Is there an O(N) solution for this problem? I am aware of monotonic stack which could be used for this kind of problems, but unable to derive an algorithm.

            For example, given an array A: A = [9,8,1,0,1,9,4,0,4,1], the solution should output [5,5,9,9,9,-1,8,9,-1,-1]. Here -1 indicates no indices satisfy the constraint.

            This link asked the same question, and the accepted answer is only for O(NlogN). I'd like to know whether an O(N) solution is possible.

            Thank you.


            Based on @Aivean's answer, here is an O(Nlog(N)) solution in python.



            Answered 2021-Oct-28 at 20:03

            There is not going to be an O(N) algorithm for the problem as written. Given a function that solves this problem, you could use it to partition N/2 arbitrary numbers into N/2 arbitrary adjacent ranges.

            For example [2532,1463,3264,200,4000,3000,2000,1000] produces [5,6,4,7,-1,-1,-1,-1], identifying the ranges of the first N/2 numbers.

            If you can only relate the numbers by comparison, then this will take you N/2 * log(N/2) comparisons, so O(N log N) time.

            Without a limit on the size of the numbers, which would let you cheat like a radix sort, there isn't going to be way that is asymptotically faster than all comparison-based methods.



            Javascript Array: what is a Big O of performing sort and then map right after on it?
            Asked 2021-Oct-28 at 17:16
            arr.sort((a, b) => a - b).map(num => num ** 2);


            Answered 2021-Oct-28 at 17:16

            The complexity of your function f, for arr of size n. We'll assume:



            Determining if there exists numbers n1, n2 in a, b and n3 in c such that n1 + n2 = n3 [ftt, polynomial multiplication]
            Asked 2021-Oct-17 at 04:03

            Hello I am working on a problem that seems to be out of my league so any tips, pointers to reading materials etc. are really appreciated. That being said here is the problem:

            given 3 subsets of numbers a, b, c ⊆ {0, ..., n}. In nlog(n) check if there exists numbers n1, n2 in a, b and n3 in c where n1 + n2 = n3.

            I am given the hint to convert a and b to polynomial coefficients and to use polynomial multiplication using ftt to multiply the coefficients of a and b.

            Now where I am stuck is after getting the result of the polynomial multiplication, what do I do next?

            Thank you in advanced.



            Answered 2021-Oct-17 at 04:03

            Thanks to all who helped. I figured it out and hopefully this can help anyone who runs into a similar problem. The issue I had was I incorrectly assigned the coefficients for a_coeffs and b_coeffs.

            Here is the solution which passed the tests for those interested.


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


            No vulnerabilities reported

            Install NLog

            For the possible options in the config, check the Options list. Having troubles? Check the troubleshooting guide.
            .NET Framework
            ASP.NET Core
            .NET Core Console
            Use Visual Studio 2019 and open the solution 'NLog.sln'.
            AppVeyor for Windows builds, including Silverlight and Xamarin.
            SonarQube for code coverage


            Issues with getting it working? Please check the troubleshooting guide before asking! With a clear error message, it's really easier to solve the issue!. Unclear how to configure NLog correctly of other questions? Please post questions on StackOverflow. Do you have feature request or would you like to report a bug? Please post them on the issue list and follow these guidelines.
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