gsubfn | Automatically exported from code.google.com/p/gsubfn

I am building a Shiny app that provides canned reports and maps from a database of field-collected vegetation data. The app has a series of SQL scripts that draw in the data from appropriate database tables to generate the reports and to query the spatial data stored as blobs. The user interface allows the user to select a project and then a unit within that project on which to report. When my app runs, Shiny freezes when I try to change one of the projects. I suspect that this has to do either with how I have set up the reactivity to update the "Unit" drop down menu, or the interface between R and MS SQL. Unfortunately, I was unable to recreate the problem outside of my organization's enterprise data, so I will present two scripts which will hopefully be enough information. My apologies ahead of time for not being able to come up with a script that reproduces the error. Below is a working minimal reproducible example of how I have structured the app - this one works without error, but will give you a sense of how I have built the app and how it should work:

I'm looking to find a match of an exact bunch of strings in a R dataframe column containing strings.

Here's the format in which I have my bunch of reference strings which will be stored in the variable splitval:

I have a data frame that includes comments from different people (so it can be written in any form they want). The sample data frame is shown below (this is only a sample and my original data set has more than 50000 rows):

I am trying to run a Rscript using crontab with Rstudio closed and i am getting the following error in the log when the script is ran:

I have a 400,000 row file with manually entered addresses which need to be geocoded. There's a lot of different variations of the same addresses in the file, so it seems wasteful to be using API calls for the same address multiple times.

To cut down on this, I'd like to reduce these five rows:

I'm struggling to find the syntax to replace only the second set of integers in a string

I have this

I have a dataset called Messages that contains C# errors. I have a 2nd dataset called Usernames that contains a list of usernames. I want to remove occurrences of any username from messages. No message should have more then 1 occurance of username. I thought I could do this with gsubfn, but it output all NULLs. Can someone set me straight on the best way to do this?

A simple question but I cannot solve it. I got a string like this mail address:

I analyse text strings and I try replace all dots . within round brackets () with commas ,

I found a regex that matches eveything within the brackets: