React Hook “useEffect” is called conditionally – Code Example
Akash Mittal
React hooks are needed to be executed in the same order as they are defined. This should happen at each render of the component. But if you use hooks like…
component is changing controlled input to be uncontrolled – Code Example
A controlled input is run by state. If this state gets undefined then the controlled input becomes uncontrolled and you will get the warning: A component is changing a controlled…
export ‘Switch’ was not found in ‘react-router-dom’ – Code Example
In V6 of react-router-dom, the <Switch> component is deprecated against <Routes> component. So, you need to replace all the Switch with Routes otherwise you will get export ‘Switch’ (imported as…
no longer support global installation of Create React App – Code Example
React deprecated the global installation of create-react-app. Now you don’t even need to install create-react-app. Use npx to always get the latest version of create-react-app. Solution with Code Example First,…
typeof variable == “boolean” Check if type is boolean – Code Example
In order to check if type of variable is boolean you can use typeof variable == “boolean”. If it is object then you may use toString.call(obj) === ‘[object Boolean]’. Code…
Refused to apply style MIME (‘text/html’) not supported stylesheet MIME
Browser throws “Refused to apply style because its MIME type (‘text/html’) is not a supported stylesheet MIME type” when they are not able to find the file in the provided…
failed to solve with frontend dockerfile.v0: Failed build LLB – Code Example
Docker throws error failed to solve with frontend dockerfile.v0: failed to build LLB due to a number of reasons – Using Virtual Private Network (VPN) Some file might not exist…
matplotlib side by side plots vertically and horizontally – Code Example
Matplotlib provides pyplot.subplots function which accepts number of rows and columns as arguments. These arguments are used to create plots side by side vertically and horizontally. Code Example The format…
Prevent re-entering of password in git pull – Code Example
To prevent re-entering of password in git pull or git push, you can edit your .git/config file in the project and update the remote url value. Add user token before…
Entry .classpath duplicate but no duplicate handling strategy has been set
Gradle throws Entry .classpath is a duplicate but no duplicate handling strategy has been set error when it finds duplicate class files but there is no way defined to process…
fatal error: uncaught error: call to undefined function mysql_connect()
Php throws error fatal error: uncaught error: call to undefined function mysql_connect() when you use mysql_connect() function. This is because mysql_connect() is deprecated and no longer used. Instead, use mysqli_connect()…
fatal error: python.h: no such file or directory – Code Example
C++ throws fatal error: python.h: no such file or directory when it is not able to find python header file. This could be due to bad installation of static libraries…
unexpectedly found nil while unwrapping an optional value – Code Example
Swift throws thread 1: fatal error: unexpectedly found nil while unwrapping an optional value when you try to unwrap an optional value which has no assigned value. An optional value…
error originates from subprocess, likely not problem of pip – Code Example
Python throws error: This error originates from a subprocess, and is likely not a problem with pip when there is some issue with installed pip version. When Python updates pip,…
syntaxerror: cannot use import statement outside module – Code Example
Here is the solution for syntaxerror: cannot use import statement outside a module – 1. Add this to package.json – 2. Or, use type=module in <script> tag – Other issues…
valueerror: max()/min() arg is an empty sequence Python – Code Example
Python throws valueerror: max() arg is an empty sequence when argument of max() function is an empty iterable like list. Similarly min() function throws the error. According to Python documentation…
K Lists In Java – Code Example
Teresia Wachira
Introduction K-list method displays the entries in the local credentials cache and key table in the command line of the command line server. Let’s Dive In; The klist method displays…
E Lists In Java – Code Example
Introduction E lists are better referred to as Interface List <E> where E is the type of elements in this list. Classes that implement the Interface List <E> include: AbstractList,…
valueerror: list.remove(x): x not in list – Code Example
Python throws valueerror: list.remove(x): x not in list when an item is not present in the list and still you are trying to remove it. Let’s understand this with an…
uncaught domexception: blocked a frame with origin – Code Example
Browsers throw uncaught domexception: blocked a frame with origin when you try to load a url in an iframe which is not of your domain. This is a CORS error…