PotatoChips | Eurorack modules based on programmable sound chip emulation
kandi X-RAY | PotatoChips Summary
kandi X-RAY | PotatoChips Summary
These retro sound generators are so good, I eat 'em like they're potato chips. They're just so addicting!.
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QUESTION
I have several quite large data tables containing characters, which I would like to join with the entries in my database. The spelling is often not quite right, thus joining is not possible. I know there is no way around creating a synonym table to replace some misspelled characters. But is there a way to automatically detect certain anomalies (see example below)?
My data tables look similar to this:
...ANSWER
Answered 2021-Mar-25 at 15:00If I were you, I'd do a few things:
- I'd strip all special characters, lower case all characters, remove spaces, etc. That'd help a bunch (i.e. potato chips, Potato Chips, and Potato-chips all go to "potatochips" which you can then join on).
- There's a package called
fuzzyjoin
that will let you join on regular expressions, by edit distance, etc. That'll help withApple
vsApple Gala
and misspellings, etc.
You can strip special characters (only keep letters) + lowercase with something like:
QUESTION
All, I'm trying to access data frames from the content of a variable, so the process can be automated in R.
Let's say I have 10 data frames with unordered names, containing item numbers. I'm trying to merge these data frames one by one with a purchase record, matched by the item primary key. This is a straightforward challenge for one or few data frames, with a larger number, but it's really cumbersome for a large number of dataframes.
...ANSWER
Answered 2019-Sep-27 at 03:58In trying to answer your question, I created a reproducible example. (In the future, I would recommend you include a reprex.)
Your code actually appears to work just fine. See the example below.
As a next step, I would confirm that each of the data.frames whose names are in the vector df
actually have the column "item_no." Also confirm trx
has this column. Otherwise, this error does not make sense.
I would also encourage you to explore options where you do not create different data.frames in the first place. Dynamically referencing/assigning data.frames can cause unexpected challenges -- and makes your code less readable.
You can potentially keep everything in the same, long data.frame and subset out just the items that you need when automating the process. At first glance, this might seem tricky but if possible it might well simplify a lot of the issues you are encountering.
If you need additional assistance please consider posting a reproducible example that further illustrates the issues you are having.
QUESTION
I'm currently doing a project in a beginners programming class with java. The project involves making a vending machine. Essentially, the vending machine will ask what item you want and then it will ask for your money. Each time someone chooses a certain item, the quantity of the particular item is decreased by one. What I want to do is to make it so that when a certain item is out of stock (the quantity is 0), the code returns to the beginning and asks again what item you want. I'd also like to make it so if someone inputs an invalid number the code also restarts. How would I do that? Here's the code.
...ANSWER
Answered 2018-Jul-18 at 04:08You could use a while
loop to achieve this.
Consider structuring your code in the following way:
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