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Questions tagged [drop]

468 questions
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Does the Drop trait in Rust modify scoping rules?

I'll use the CustomSmartPointer from The Book, which is used to explain the Drop trait, to build an example: struct CustomSmartPointer { data: String, } impl Drop for CustomSmartPointer { fn drop(&mut self) { println!("Dropping…
Martin Geisse
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Python drop columns in string range

I want to drop all columns whose name starts by 'var' and whose content is 'None'. Sample of my dataframe: id var1 var2 newvar1 var3 var4 newvar2 1 x y dt None f None Dataframe that I want: id var1 var2 newvar1 var4 newvar2 1 x y…
MG Fern
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Reindexing only valid with uniquely valued Index objects

Irun this code esg_fm_barron = pd.concat([barron_clean.drop(columns = "10 year return", inplace = False),ESG_fixed.drop(columns = 'Name',inplace = False), financial_clean.drop(columns = 'Name',inplace = False)], axis = 'columns', join =…
Nader bouchnag
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How to delete values from one pandas series that are common to another?

So I have a specific problem that needs to be solved. I need to DELETE elements present in one pandas series (ser1) that are common to another pandas series (ser2). I have tried a bunch of things that do not work and the closest thing I was able to…
JacobMarlo
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is anyone able to restrict the type of the objects dropped on the mac in SwiftUI 3?

as per the documentation, it should be pretty straightforward. example for a List: https://developer.apple.com/documentation/swiftui/list/ondrop(of:istargeted:perform:)-75hvy# the UTType should be the parameter restricting what a SwiftUI object can…
godbout
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Can one drop rows in a dataframe based on nunique values?

I want to ignore the rows is the occupation has less than 2 unique names: name value occupation a 23 mechanic a 24 mechanic b 30 mechanic c 40 mechanic c …
futuredataengineer
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TypeORM migration:generate working great except for DROP

I have a NestJS / TypeORM Project with PostGRE SQL. I want to delete some tables, so I have deleted the concerned folders. I also removed the dist folder to build the project again but even with that, typeORM does not detect that it have to DROP…
Alexy
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Drop a row based on empty/blanks values in specific column in final excel file - Pandas Data frame

I am trying to drop rows based on the empty values in a specific column of excel after joining the data for both excels. I have tried some queries mentioned in stack overflow, but the desire results are not achieved. Kindly support and thanks First…
aza01
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Unable to drop columns from a pandas dataframe

I am trying to drop a column from a pandas dataframe as follows: df = pd.read_csv('Caravan_Dataset.csv') X = df.drop('Purchase',axis=1) y = df['Purchase'] but it does not work. I also tried the following one: df =…
Tugba Delice
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Drop column with low variance in pandas

I'm trying to drop columns in my pandas dataframe with 0 variance. I'm sure this has been answered somewhere but I had a lot of trouble finding a thread on it. I found this thread, however when I tried the solution for my dataframe, baseline with…
hex93
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Drag and drop, catalyst

I'm trying to use the drag and drop methods to drag an .mp3 file from finder into my app (using mac catalyst). So far I have succeeded in getting (I guess) the raw data from the mp3 file into an array, but I'm not sure how to proceed. What I…
patturik
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Removing columns in a nested struct in a spark dataframe using PySpark (details in text)

I know that I've asked a similar question here but that was for row filtering. This time I am trying to drop columns instead. I tried to implement Higher Order Functions such as FILTER and others for a while but could not get it to work. I think…
Rajiv Krishnakumar
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Drop SSIS Proxy Credential

I am trying to drop a credential using this query: if exists (select * from sys.credentials where name = 'SSISProxyCredentials_ABC') drop credential SSISProxyCredentials_ABC But I am getting an error message saying: Msg 15541, Level 16, State…
Trying to be DBA
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Why elements should be dropped before dropping vec in rust

I am trying to implement a vector. I found this code where the writer deallocates a vector: impl Drop for MyVec { fn drop(&mut self) { if self.cap != 0 { while let Some(_) = self.pop() { } let layout =…
user19291301
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PhantomData seems not work for dropck in rust

use core::marker::PhantomData; fn main() { struct Inspector<'a>(&'a u8); impl<'a> Drop for Inspector<'a> { fn drop(&mut self) { println!("I was only {} days from retirement!", self.0); } } struct…
dd.ho
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