Tag: member

Can member functions of an object acces private members of local a object variable of the same nature? And if yes why? (see example…a.x)

float vector3d::scalar(vector3d a){ return (x*a.x + y*a.y + z*a.z); // here we can acces a.x even if x is a private // member of a (vector3d)….my guess as scalar is a // member function of vector3d it can acces private // members of local vector3d variables } here we can acces a.x even if x… Read More Can member functions of an object acces private members of local a object variable of the same nature? And if yes why? (see example…a.x)

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How to remove nested JSON object members

I’m trying to remove the length value pair from the following JSON file: { "uuid": "6f74b1ba-0d7c-4c85-955b-2a4309f0e8df", "records": { "record1": [ { "locale": "en_US", "category": "alpha", "contents": "My hovercraft is full of eels", "length": 29 } ], "record2": [ { "locale": "cs_CZ", "category": "alpha", "contents": "Moje vznášedlo je plné úhořů", "length": 28 } ] } }… Read More How to remove nested JSON object members

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Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null

Flutter shows error Non-nullable instance field ‘_areas’ must be initialized. Maybe this is because of not defining null in lists areas what when defining null Like List? _areas; it shows an error on the index Error: Field ‘_areas’ should be initialized because its type ‘List’ doesn’t allow null. Error Line: List _areas; Here is my… Read More Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null

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Bootstrap 5 data-bs-toggle vs data-toggle. Adding the bs breaks my whole Popper

I’m one month into learning Web Development. From what I’ve read, the data-bs-toggle is the newer name for Bootstrap 5. What is the difference between Bootstrap data-toggle vs data-bs-toggle attributes? My code is simple. In the head, I’ve included CSS, jQuery, and JavaScript Bundle with Popper. In the body, I have two links with a… Read More Bootstrap 5 data-bs-toggle vs data-toggle. Adding the bs breaks my whole Popper

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How to use dplyr to return the grouped sum of all numeric columns when there are NA values?

I’m was attempting to sum all numeric columns using dplyr’s group_by and summarise functions as below. I didn’t understand the error returned from the summarise function and cannot seem to find a similar example on stack overflow … however after two members pointed out my error in making the example data I found that the… Read More How to use dplyr to return the grouped sum of all numeric columns when there are NA values?

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How to get value from a vector by value from another vector?

I have two vectors: one contains numbers and names of things; second collects numbers that have already been showed to the user; I’m trying to make a history list of all objects that have been shown. Here is my code: class palettArchive{ private: std::vector<std::pair<int,std::string>> paletts; int palletsCounter; std::vector<int> choosen; public: //… void history(){ auto printHist… Read More How to get value from a vector by value from another vector?

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How can I remove a specific role from everyone that has it in Discord.js v13

I want my bot to remove a specific role from everyone that has it when a message is sent in a channel client.on(‘messageCreate’, async message => { if(message.channel.id === ‘954375143965216869’){ //counting message.guild.roles.get(‘944674567811645472′).members.map(m=>m.member.id).delete(); } }) I’m using discord.js v13 and node.js v16.4.2 >Solution : This should work, it’ll fetch all the members in the guild and… Read More How can I remove a specific role from everyone that has it in Discord.js v13

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