Category "lambda"

Use Mockito 2.0.7 to mock lambda expressions

I want to mock a query provided on my repository like this: @Test public void GetByEmailSuccessful() { // setup mocks Mockito.when(this.personRepo.find

Pandas dataframe count values above threshold using groupby - code optimization

I have a large pandas dataframe where I want to count the number of values above a threshold (zero) in each column grouped by the values in one name column. Th

python: union keys from multiple dictionary?

I have 5 dictionaries and I want a union of their keys. alldict = [dict1, dict2, dict3, dict4, dict5] I tried allkey = reduce(lambda x, y: set(x.keys()).un

Performance of foreach, array_map with lambda and array_map with static function

What's the performance difference (if there is any) between these three approaches, both used to transform an array to another array? Using foreach Using array

node-lambda - TypeError: handler is not a function

New to AWS and found it quite straightforward so far but really getting stuck packaging a lambda function. I'm using node-lambda to try and run the function bu