all Tutorials
31. TypeError: Cannot read property 'isDevice' of undefined - expo
By: Murali : 2023-05-16
Description: If you get this error, TypeError: Cannot read property 'isDevice' of undefined while using Device.isDevice in your expo project, you are probably using a wrong import method.
32. Start background location tracking after login in expo react native
By: Adeline : 2023-05-16
Description: If you want to have a background job in an expo app to get the location of the device continuously and the job should start only after login is successful. You can define the background task in app.js and then when login is successful in another component, (for example user.js) you can start the job.
33. set up a global error handler in React Native (expo)
By: Zoe : 2023-05-16
Description: Note: It's generally recommended to handle promise rejections at their source and provide appropriate error handling within your code, rather than relying on a global error handler.
34. Read a file having a list of telnet commands and execute them one by one using Java
By: Oliver : 2023-05-11
Description: You can achieve this by reading the list of telnet commands from a file and executing them one by one using the ProcessBuilder class in Java. Here's some sample code that demonstrates how to do it
35. #if and #else in C
By: Nirmal : 2023-05-11
Description: In C, #if and #else are preprocessor directives that allow conditional compilation of code based on whether a given macro is defined or not.
36. The output of System.out.println(5>>2) in Java
By: Nirmal : 2023-05-11
Description: In this case, 5 is represented in binary as 00000101. When we shift it right by two positions, we get 00000001, which is the binary representation of 1. Therefore, the output is 1
37. The output of System.out.println(5<<2) in Java
By: Nirmal : 2023-05-11
Description: In this case, 5 is represented in binary as 00000101. When we shift it left by two positions, we get 00010100, which is the binary representation of 20. Therefore, the output is 20
38. Open a .docx file and show content in a TextArea using Java
By: Maggie : 2023-05-11
Description: It is possible to read a .docx file using Java and display its contents in a text area, but it requires additional libraries and code to handle the file format.
39. Show a calendar for user input in JSP
By: Marlene : 2023-05-11
Description: To show a calendar in a text field when the user enters it in JSP, you can use JavaScript and jQuery. Here's an example:
40. SafeAreaView in React Native
By: Yolander : 2023-05-10
Description: In React Native, you can use the SafeAreaView component to ensure that your content is displayed within the visible area of the device screen. The SafeAreaView component is used to handle elements that need to be shown within the safe area boundaries of a device. You can use the following example code to properly format the container style in React Native