I would like to display a random string when i click the ElevatedButton.However,the same string still display when i click ElevatedButton. The string will be randomly change only when i restart the app. class HomePage extends StatefulWidget { const HomePage({Key?…
For this document: { "_id" : 3, "name" : " Shyam Lingam " } Expected: while retrieving _id = 3 then result should come like below: { "_id" : 3, "name" : "Shyam Lingam" } I tried this: db.collection.find({_id:3},{name:{$trim:{input:"$name"}}}) {…
Below is the response where I am getting image path.the file can be pdf or jpeg or any other format. for image i am showing it in dialogue and for pdf I have to download it to the user's device.For…
$string = 'Audi MODEL 80 ENGINE 1.9 TDi'; list($make,$model,$engine) = preg_split('/( MODEL | ENGINE )/',$string); Anything before "MODEL" would be considered "MAKE string". Anything before "ENGINE" will be considered "MODEL string". Anything after "ENGINE" is the "ENGINE string". But we…
I want to prefix the line containing the string echo '"xxx.yyy" with "# " (ash+space) string in file.txt using sed in linux output should look like this: # echo '"xxx.yyy" I tried this: find file.txt -type f -exec sed -i…
I'm working on a project that uses a JSON file, and I'm having trouble removing a string from a list within the JSON file. Here's an example of what my JSON file looks like: {"language": "['English', 'French', 'Spanish']", "bank": 50}…
I was analysing a piece of code(written by someone else) in AngularJS and came across the below block with some string operations with special characters. What do we mean by the following expressions? It would be great if someone can…
I have color value Color(0XFFDDDDDD) stored as a string in my database. I want it to convert to Color widget in flutter. How can I do it? Here is image of flutter color value picked from color picker. I tried…
On the following, the key c has a stringified value: let obj = { a: "apple", b: 2, c: '{"p":"11","q":"22","r":{"x":"aa","y":"bb"}}' d: "3" } I need to parse this object. I may have multiple keys with stringified object data and some…
I'm calling an async function that has the file path as a parameter and reads and displays the content in the file. this is the place where I'm invoking the function. this is the function. After reading the contents in…