DeveloperLoad - DeveloperLoad

LibVips pdf to jpg on specific pdf page for multi-page pdf

I'm currently transforming pdfs to jpgs using the libvips command line. vips jpegsave mypdf.pdf myimg.jpg If a PDF is a multi page PDF then libvips will only t

Curl: how data is interpreted by Java InputStream, if I sent it using curl --data-binary?

I have a server, written on Java, which is currently running on a http://localhost:8080 Source code is hidden from me, but I know that all endpoints are handl

Save a set of functions to a file

I have a specific set of functions of type Function which I want to be able to store to and parse from disk. So I create a helper data type FunctionData like so

MySQL insert same values n times

I need to insert same value in MySQL database table. The only different value is an autogenerated value so I need to execute N times this query: INSERT INTO uni

applying str_split_fixed function simultaneously across multiple columns in r

I have a data frame which is having multiple columns each column is having string values. I want to split column values by coma separator in the output data fra

How to auto insert data into database using the values from another table? [duplicate]

I have 2 tables. this is the incomes table income_id date_income total_amount 1 2022-05-22 14 2 2022-05-22

Dplyr filter behaviour when using vector [duplicate]

I use dplyr quite a lot for data wrangling, but I never figured out dplyr filter behaviour when using filter(df, variable == c(value1, value2)