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pandas DataFrame: replace nan values with average of columns
... perspective it is wrong to first replace NA and then split into train and test... You MUST first split into train and test, then replace NA by mean on train and then apply this stateful preprocessing model to test, see the answer involving sklearn below!
– Fabian Werner
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Postgres unique constraint vs index
...basic but important issue, so I decided to learn by example.
Let's create test table master with two columns, con_id with unique constraint and ind_id indexed by unique index.
create table master (
con_id integer unique,
ind_id integer
);
create unique index master_unique_idx on master (in...
How to get rspec-2 to give the full trace associated with a test failure?
Right now if I run my test suite using rake spec I get an error:
6 Answers
6
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Test if remote TCP port is open from a shell script
I'm looking for a quick and simple method for properly testing if a given TCP port is open on a remote server, from inside a Shell script.
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How to pass JVM options from bootRun
...ing web application that communicates with remote host and I would like to test it locally behind corporate proxy.
I use "Spring Boot" gradle plugin and the question is how can I specify proxy settings for JVM?
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Why doesn't println! work in Rust unit tests?
I've implemented the following method and unit test:
5 Answers
5
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Logic to test that 3 of 4 are True
...u want to use this logic in a programming language, my suggestion is
bool test(bool a, bool b, bool c, bool d){
int n1 = a ? 1 : 0;
int n2 = b ? 1 : 0;
int n3 = c ? 1 : 0;
int n4 = d ? 1 : 0;
return n1 + n2 + n3 + n4 == 3;
}
Or if you want, you can put all of these in a singl...
Organizing a multiple-file Go project [closed]
...o structure your project in a go build friendly way, and also how to write tests. Tests do not need to be a cmd using the main package. They can simply be TestX named functions as part of each package, and then go test will discover them.
The structure suggested in that link in your question is a b...
What is the “double tilde” (~~) operator in JavaScript? [duplicate]
...hod. They run in about 0.2 microseconds instead of 0.5 microseconds when I test it in Firefox on my computer. That means that you need to use it a lot before it's noticable. In a functon like the one in the OP it's just micro optimisation, and only makes the code harder to follow.
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How Do I Use Factory Girl To Generate A Paperclip Attachment?
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You can use fixture_file_upload
include ActionDispatch::TestProcess in your test helper, here is an example factory:
include ActionDispatch::TestProcess
FactoryBot.define do
factory :user do
avatar { fixture_file_upload(Rails.root.join('spec', 'photos', 'test.png'), 'image...