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Is using document.getElementById in React an anti-pattern?
it helps some times In general, refs is better than document.getElementById, because it is more in line with the rest of your react code.In react, every component class can have multiple component instances. Also using id is dangerous, because react
TAG :javascript
Date : July 31 2020, 05:00 PM , By : acblevins
Creating C functions with arguments but no returns, what went wrong?
Does that help Your void get_numbers(float a, float b) function creates a copy of a and b on its stack. These variables are deleted upon function's exit. You should use pointers:
TAG :c
Date : July 31 2020, 05:00 PM , By : Chengzhang Zhong
How to plot a cosine wave in MATLAB given fitted parameters?
this one helps. TL;DR: It is possible to both fit and plot the curve, with and without requiring toolboxes. All cases presented below. Plotting:
TAG :matlab
Date : July 31 2020, 05:00 PM , By : user6111904
What should I do to solve the GNAT GPS "library not found" problem and build my first "Hello World"
I wish did fix the issue. guys. I found the solution myself.On the program's download's page, above the program's link, there is a README file.
TAG :development
Date : July 31 2020, 05:00 PM , By : Anderson Lima Santos
Different uses of noexcept
I wish this help you The language grammar allows only the noexcept specifier to appear in that position.Therefore your first point is correct. g() will be marked noexcept, because f() returns true.
TAG :cpp
Date : July 31 2020, 05:00 PM , By : Lionel Bouchat
std::map with keys that have no ordering
it helps some times Your objects have to respect strict total order. That means, most importantly, your < relation must be irreflexive and transitive. In your case, consider just using std::tuple, which already provides a functioning operator< with l
TAG :cpp
Date : July 31 2020, 05:00 PM , By : Francisco
Invoking `constexpr` member function through reference - clang vs gcc
fixed the issue. Will look into that further Consider the following example (snippet (0)): , Is g++ 9.x correct in accepting snippet (0)?
TAG :cpp
Date : July 31 2020, 04:00 PM , By : Iwan Riwayanto
Destructuring assignment vs array.map
I wish this help you Don't use 1, at least not the way it is written. You are mutating the old state, which can easily cause bugs in react which assumes that state is immutable. You do create a new array, which is good, but you're not creating new el
TAG :javascript
Date : July 31 2020, 04:00 PM , By : Vance
Calculate the white pixel inside cv2.circle
around this issue I am not sure what you consider as "white", but here is one way to do the counting in Python/OpenCV. Simply read the image. Convert to grayscale. Threshold it at some level. Then just count the number of white pixels in the threshol
TAG :python
Date : July 31 2020, 04:00 PM , By : vaschops
What does 0600 mean in a function? Is it same as \200?
I wish this helpful for you I'm trying to write the memccpy() function myself. I'll call is ft_memccpy(). I found test main functions online and there are two test functions that confuse me. The first test function works fine with my ft_memccpy() but
TAG :c
Date : July 31 2020, 04:00 PM , By : Padhu
How to create string array from key/value in JS?
I think the issue was by ths following , trying to create string array from key/value below code returns key/value. How do I create string array? , You can use map to achieve the same.
TAG :javascript
Date : July 31 2020, 04:00 PM , By : dareal
Convert JSON to headed TSV
it helps some times Here's a relatively robust jq script for printing the TSV with headers using the key names in the first object:
TAG :json
Date : July 31 2020, 04:00 PM , By : tfpractice
Is using jwt tokens as correlation ID a good practice?
this one helps. Unless you plan on generating a new JWT for each request, then a JWT is probably not the best place to store your correlation ID. Here is one example of why this is the case. Many websites, such as Facebook or Stack Overflow, issue lo
TAG :spring-boot
Date : July 31 2020, 03:00 PM , By : bluemix160325
unsigned long cannot hold the correct number over 2,147,483,647
this will help The type of the expression 0x80
TAG :cpp
Date : July 31 2020, 03:00 PM , By : Amanjit Sahu
Best practice for defining a class that computes attributes in order when initialized
around this issue Here's your class using properties instead (with an added method for returning each property):
TAG :python
Date : July 31 2020, 03:00 PM , By : Gerry
Function of retval in pthread_join
it should still fix some issue I'm learning threading in C in OS. I don't know why following code is giving me segmentation fault. Can anyone help me here? I am also confused a bit about how pthread_join uses its argument void ** retval. What is its
TAG :c
Date : July 31 2020, 03:00 PM , By : Steven Porter
Using case_when() within mutate_at() to recode rows of selected columns with different types with NA
wish of those help Given the data: , Work around similar to @NelsonGon :
TAG :r
Date : July 31 2020, 03:00 PM , By : Den Chernikov
Why do I need to provide constructor implementation in header? C++
Does that help You declared 2 classes with same name, your cpp is completely wrong. It does not contain implementation of constructor declared in hpp file, it declares another class and it's implementation. main.cpp includes hpp file and look for imp
TAG :cpp
Date : July 31 2020, 03:00 PM , By : Rezam Alkhaldi
How to add a numerical value into a window frame in SQLite?
will help you I am having some difficulty in adding a numerical digit into my windows frame specification in SQLite. I am using R in SQLITE. Although if you know how to do this in SQL then that's also helpful. , I think that you want:
TAG :sql
Date : July 31 2020, 02:00 PM , By : Baduq
How does IDENTITY not equal record number in SQL Server?
I wish did fix the issue. An IDENTITY is just an arbitirary number, it has nothing to do with the number of rows in the table. The seed on an IDENTITY will increment every time an INSERT is attempted. When you DELETE a row, rows with a greater value
TAG :sql-server
Date : July 31 2020, 02:00 PM , By : Jacob
Transform a complex array from a dql query to a simple one returning just selected entries
seems to work fine I have written a dql query:
TAG :php
Date : July 31 2020, 02:00 PM , By : fpelletier
git status still says “Your branch is ahead of <tag1> by N commits.” after git rebase <tag2>
it helps some times It seems likely1 that you have accidentally created a branch name and a tag name that both print the same when shortened. [Edit: per update 3, this isn't the problem. Instead, somehow, you have the tag name set as the branch's ups
TAG :git
Date : July 31 2020, 02:00 PM , By : Nishika Singh
How to use Laravel Eloquent ::with() on something you have gained already doing a ::with()?
To fix the issue you can do See "nested eager loading" at https://laravel.com/docs/6.x/eloquent-relationships. You can use "dot syntax" to fetch nested relationships like this:
TAG :json
Date : July 31 2020, 02:00 PM , By : Виталий Мазный
Can someone tell me why (return DayName;) causes an ERROR cause it's an unassigned local variable?
I hope this helps . In order to use the value of a variable, you need to assure that, no matter which path the execution takes, your variable will receive a value. As it is, you didn't assure that, because there is a path which the execution may take
TAG :chash
Date : July 31 2020, 02:00 PM , By : Aaron Singer
Writing my own syntatic sugar function to work with Await.result
hope this fix your issue How could I transform this: , You can create your own implicit class:
TAG :scala
Date : July 31 2020, 01:00 PM , By : simonePure
Sort a list of Dictionaries by list of strings
it helps some times If you don't want to rely on the insertion order of dictionaries and python versions, you can turn it into a sorted list, for example:
TAG :python
Date : July 31 2020, 01:00 PM , By : KitKat31337
How to replace multiple lines in a text file?
I hope this helps . I think you shouldn't read your file line by line for this problem. It is not that python does not replace line breaks, but as each line ends at line break, you can't have any line matching your multi-lines content.You could inste
TAG :python
Date : July 31 2020, 01:00 PM , By : Sindijs Eizengraudin
How do I Merge one column's cells if values in another column is same? , My formula isn't working
I hope this helps . I have values in my excelsheet as such, , With TEXTJOIN():
TAG :excel
Date : July 31 2020, 01:00 PM , By : NovaStar
If statement is rendering the code as useless
this one helps. The code isn't working pls help, when the code is inside an if variable it doesn't work, but otherwise it does.... , You're declaring desiredPosition twice, remove the second one:
TAG :unity3d
Date : July 31 2020, 01:00 PM , By : D. A.
Take as input str, a string. Write a code which moves all ‘x’ from the string to its end.Print the value returned
like below fixes the issue @HakanBatmaz provided explanation of the problem. Here is proper way to do it:
TAG :cpp
Date : July 31 2020, 01:00 PM , By : Mevludin
rand with vector of strings in a multimap
Hope this helps The right way of using rand() is to call srand() first. srand() will generate a series of random numbers, and rand() will simply iterate over them. If you don't call srand() you will get the same number every time you'll use 'rand()`.
TAG :cpp
Date : July 31 2020, 12:00 PM , By : Queen
How to compile C ++ code from Windows for Linux (Dev-Cpp)
Does that help You can install Windows Subsystem for Linux, or set up a VM and do it that way.Or as @user4581301 mentioned, use a cross-compiler.
TAG :cpp
Date : July 31 2020, 12:00 PM , By : Venkatesh
How can I select discrete columns from data frame
it helps some times you can create a list of strings (pythonically) and then use that to select the columns:
TAG :python
Date : July 31 2020, 12:00 PM , By : Michael Bachmann
Revert to an older version of Java
it helps some times You don't need to uninstall the new java version. You can even use multiple java versions on your mac and switch between them, look at this: https://www.jenv.be/
TAG :java
Date : July 31 2020, 12:00 PM , By : Charles Fung
Prohibit access to the private variable
Does that help Not with a keyword, no. Alternatively, you could use Inheritance to create a hidden private variable that could only be modified through it's public getter/setter, like so:
TAG :chash
Date : July 31 2020, 12:00 PM , By : susans
Is there a different method to setState with e.target.value in functional component react using hooks?
hope this fix your issue The big difference between the setter you get from useState and the class component setState method is that the setter from useState doesn't merge like setState does. So this:
TAG :javascript
Date : July 31 2020, 12:00 PM , By : Diahron Grismore
How to dynamically change the App Title in Flutter Web?
Any of those help Dynamic app title in Flutter The app title can be dynamically changed on all platforms using SystemChrome.setApplicationSwitcherDescription:
TAG :flutter
Date : July 31 2020, 11:00 AM , By : Milhan Kim
How To Check Numerical Format in SQL Server 2008
it should still fix some issue What you want to do does not make sense in SQL Server.Oracle supports a number data type that has a variable precision:
TAG :sql
Date : July 31 2020, 11:00 AM , By : Daniel Gerlag
How to access state when component unmount with React Hooks?
I hope this helps . useState() is a specialized form of useReducer(), so you can substitute a full reducer to get the current state and get around the closure problem.NoteEditor
TAG :javascript
Date : July 31 2020, 11:00 AM , By : Gilbert Vigil
In Vue.js app a lot of errors in the PhpStorm IDE
it fixes the issue You have the right option selected; the error comes from JSHint linter that doesn't support ES6 syntax by default. You have to tell JSHint that your are using ES2015 syntax. This can be done by adding /*jshint esversion: 6 */ comme
TAG :vue.js
Date : July 31 2020, 11:00 AM , By : NB_01170
Trying to delete a list entry using different components
I wish this helpful for you You need to use the @Output() decorator for your event.list-component.ts
TAG :angular
Date : July 31 2020, 11:00 AM , By : Ruud Mantingh
Scala Futures Returning Empty List after Await
hop of those help? Mixing mutable collections and concurrency is not a good idea. Consider refactoring checkEntry to return, say, Future[Option[Entry]] instead of Future[Boolean], where Some would represent successful validation, whilst None unssuces
TAG :list
Date : July 31 2020, 11:00 AM , By : Shannon Hilliard
Laravel General error: 1215 Cannot add foreign key constraint
help you fix your problem Both the referencing and referenced columns must have the same datatype, as explained in the documentation:
TAG :php
Date : July 31 2020, 10:00 AM , By : Siena Norton
Can I use n2 or n2d machine types with Cloud Dataproc?
may help you . Cloud Dataproc does support machine types other than n1 machine types when using the gcloud command line tool. If you specify a n2 (or other machine type) it should use that machine type appropriately. For example:
TAG :development
Date : July 31 2020, 10:00 AM , By : Donaghy
Test of A* implementation passes in Python3.8/Windows but fails in Python3.5/Ubuntu
it should still fix some issue The problem lies in this line that is deciding which square to consider next for the route:
TAG :python
Date : July 31 2020, 10:00 AM , By : Franco Guidi
How to validate a negative value being passed in as a alphanumeric literal?
it should still fix some issue I suggest to use FUNCTION TEST-NUMVAL(some-data) if you need a good check of anything that is defined as alphanumeric/alphabetic; if this passes you can then use FUNCTION NUMVAL(some-data) to get the actual value.For mo
TAG :development
Date : July 31 2020, 10:00 AM , By : jgarza
The space complexity is always the lower bound of the time complexity
it helps some times We are speaking of sequential algorithms. Then space complexity S(n) means that the algorithm somehow inspects each of S(n) different memory locations at least once. In order to visit this many memory locations a sequential algori
TAG :algorithm
Date : July 31 2020, 10:00 AM , By : Lindsey92
Do we use spatial filtering or frequency filtering for blurring, edge detection?
To fix the issue you can do For any linear filter (convolution) you can obtain the same result using spatial domain and frequency domain computations. The convolution with a large kernel is usually more efficient to implement by multiplication in the
TAG :python
Date : July 31 2020, 10:00 AM , By : bibin baby john
Under the hood of Clojure repl execution
seems to work fine Clojure code is compiled using the ASM library into class files. Those class files are loaded into a custom DynamicClassLoader.Good talk on the compilation process: https://www.youtube.com/watch?v=-Qm09YiUHTs
TAG :clojure
Date : July 31 2020, 09:00 AM , By : Merritt Carr
Delete duplicate values
I think the issue was by ths following , It deletes all ENAMEs, not only duplicates (i.e. it doesn't leave one row). Try something likeTable contents at beginning:
TAG :sql
Date : July 31 2020, 09:00 AM , By : Jstall
React Native undefined is not an object (evaluating 'props.navigation.toggleDrawer')
seems to work fine The reason for the error is that props.navigation is undefined in NavigatorHome. you must pass props.navigation to NavigatorHome. Your code should be as follows:
TAG :react-native
Date : July 31 2020, 09:00 AM , By : Larcer
Haskell - Automatic Monad instance
I wish this help you I'm trying to create my own data type, which will be part of Monad class, but , It works fine for other classes (Show for example)
TAG :haskell
Date : July 31 2020, 09:00 AM , By : Fallon Blaser
Subtracting 1 day from date variable causing errors
I wish this help you I have an SQR program that uses a field called $EFFDT. It is NOT explicitly declared in the program as a date variable. What it currently does is get initially set to '' (blank) as follows: , Try this
TAG :development
Date : July 31 2020, 09:00 AM , By : Rick Denman
c# How do I correctly compile code for distribution?
fixed the issue. Will look into that further For a console application, you should be able to zip up the contents of the bin/release directory and distribute it directly.You can safely exclude .pdb files from your archive, though they can help you de
TAG :chash
Date : July 31 2020, 09:00 AM , By : Jerzy
Running a for-loop does not display all the items
I wish this help you You can create a result string and append the flavours and finally return the resulting string.
TAG :python
Date : July 31 2020, 08:00 AM , By : armandops
What is viewchild ElementRef in angular
I hope this helps you . ViewChild here lets you add a reference to an html element in the same component In your case the div with network It's similar to document.getElementById except it only detects a 'child' in the same component
TAG :angular
Date : July 31 2020, 08:00 AM , By : uchenna eze
How can I click on one element and listen for a change in another element's value?
I think the issue was by ths following , Move the change event code out of the click event code and in the click event code just update the email field as needed. But, you'll need to manually trigger the change event of that field because change only
TAG :javascript
Date : July 31 2020, 08:00 AM , By : David
R programming: How to count different values’ frequency among all columns?
To fix this issue Using dplyr and tidyr, you reshape your dataframe into a longer format, group by OP ids and values, make the count using count and reshape our dataframe into a wider format to have the count of each values per OP. NB: For missing va
TAG :r
Date : July 31 2020, 08:00 AM , By : Eduardo Zanoni Marqu
Python challenge I cannot solve
this will help You can try something like this to change a number into what that code would represent in asci text:
TAG :python
Date : July 31 2020, 07:00 AM , By : seangeleno
ggplot2: geom_point is sometimes removing NA values depending on the aesthetic used
it should still fix some issue You can set the na.value value for colour scales. If you set it to NA then the missing points aren't shown:
TAG :r
Date : July 31 2020, 07:00 AM , By : Daniel Infante Pérez

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