noodel | A programming language designed around supporting ASCII | Natural Language Processing library
kandi X-RAY | noodel Summary
kandi X-RAY | noodel Summary
Noodel has three main data types: NUMBER, STRING, and ARRAY. ARRAY objects are always passed-by-reference, but the others are passed-by-value (...).
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QUESTION
I have the following dataframe:
...ANSWER
Answered 2020-Sep-24 at 10:45Solution if no missing values, only empty strings is joined only values filtering empty strings:
QUESTION
I'm currently running a stack that consists of Express and MongoClient with Mocha and Chai for testing. I'm working on writing test cases for my endpoint and am getting a random error that pops up from time to time. Below is a snippet of one of the suits I'm writing:
...ANSWER
Answered 2018-Jun-12 at 11:32You have a race condition between .createCollection
and .insertOne
. In other words, they start at the same time and go in parallel. There is no way to tell which will be done first.
The way .insert
works in MongoDB is that if the collection is missing and you try inserting - it's going to create a collection. So if .insertOne
is executed first - the collection is created and that is why you're getting the already exists
error in an attempt to createCollection
.
Due to the async nature of DB calls you'd have to place the subsequent calls inside the callback of a prev. one. This way there will be no parallel execution:
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