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How eliminate rows in a dataframe with common values with other dataframe? Rstudio

I need to eliminate the rows in a dataframe that have at a column common values with the same column in a second dataframe The columns the code have to take into account contain IDs of subjetcs, while the rest contain data refering to those subjects. Example of dataframes (Rstudio) df1<-data.frame(ID=c(13, 16, 25, 36, 25, […]

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Why is running time measured by Visual Studio Debug tool and chrono::high_resolution_clock so different?

I want to test running time of my code, so I use std::chrono::high_resolution_clock::now() to get current time. Time duration measured this way is roughly 45ms. However, when I try to measure with visual studio debug tool, it shows the duration between two break points is only roughly 7ms. Which one is the accurate time, or […]

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TYPO3 Form: The Prototype “standard” was not found

I built an api in TYPO3 which allows the user to fill in forms from an mobile application. Now I am trying to validate the given post data with the form definitions of the form. Therefore I need to get the processing rules which can be accessed with the form definition. At the moment I […]

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How to show something result for lots of time in two for loop?

I use matlab to write a code which can show some calculated result for two times,i mean,if A=[1 2 3],B=[1 2 3],and I want to calculate the addition of each elements in the A and B vector for two times I mean first result should be A(1)+B(1) A(1)+B(1) A(1)+B(1) = 2 2 2 Second result […]

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How wait notify work for single producer and multiple producer

How we will call wait and notify for multiple consumers from the producer code. From the producer we will call notify but will consumer will consume it and how producer thread will know whom to notify and which thread has called the wait method.

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How to find exact match in a column faster without indexing being an option due to non unique values

I have a database column with titles of documents. These titles are not unique, and can be anywhere from a few words to a a few dozen words. I have over 3 million rows. I am trying to optimize looking for exact matches. Indexing is not possible since there is no primary key, and the […]

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PayPal Smart Buttons Custom amount

i’m having a bit of an issue with some code regarding the paypal smart button i’m no code expert i dabble a bit but could do with some help. I have the button set up and all is working but i would like to make it so the customer can enter the amount they wish […]

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Azure datafactory deployment automation from multiple branches

I want to create automated deployment pipeline for azure datafactory. For one stream of development we can configure it using doc https://docs.microsoft.com/en-us/azure/data-factory/continuous-integration-deployment But when it comes to deploying to two diff test datafactories for parrallel features development (in two different branches), it is not working because the adb_publish which gets generated is only specific to […]

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How to add a bean in SpringBootTest

The question seems extremely simple, but strangely enough I didn’t find a solution. My question is about adding/declaring a bean in a SpringBootTest, not overriding one, nor mocking one using mockito. Here is what I got when trying the simplest implementation of my real need (but it doesn’t work): Some service, bean, and config: @Value […]

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Typescript – Why can’t I use a key from a callback to refer to an object

Why do I get an error Element implicitly have any type because the expression of type string can’t be used to index type Chapter with the following code? I don’t fully understand what it’s saying. What I want is to update the specific value using the key from the callback: let chaptersWithStrings = props.chapters; chaptersWithStrings.forEach((chapter) […]