All Questions
13 questions
5
votes
1
answer
105
views
Converting duplicate JS code into a higher order function
I have a block of code that is re-used and I want to use functional programming to remove this duplication.
My code takes an array of items, splits the items into batches of 500 and then does some ...
- 211
3
votes
0
answers
40
views
Decoding request object before use it in an Insert query
I want to decode a request object before use it in an insert query.
Request object containes the following JSON body:
...
- 31
6
votes
1
answer
690
views
“Real world” JSON transformation using Node.js
Background
I transformed a non-trivial JSON response that uses arrays into
a nested object
eliminating some of the original properties
inserting a new summary property that is a unique list of ...
- 163
1
vote
1
answer
113
views
Turning simple Node.JS Postgres query and logging into most-functionally-pure-possible code
After reading "How to deal with dirty side effects in your pure functional JavaScript," I've decided to take something I do on a regular basis ("Original approach" below)—connect to a Postgres ...
- 113
2
votes
0
answers
45
views
Javascript RPC Call Handles Data and Returns DB Response
I have a service within a larger set of microservices that's handling a RPC call. My function mainly just parses through the request, uses the data to insert data into our MongoDB database, and then ...
- 288
3
votes
3
answers
759
views
Eloquent Javascript exercise: find average age from ancestors array per century
I solved an exercise from the book "Eloquent Javascript". I want to share with you guys the solution. The exercise is from chapter 5. Summing up, I have to find the average age from the ancestors ...
- 133
1
vote
1
answer
94
views
Functional Implementation of Co-prime pairs in array
Program finds the number of pairs of co-primes in an array using
functional concepts in Node.js
...
- 187
1
vote
2
answers
78
views
Getting a string from a range of possible paths
I have a scenario where I need to grab the first occurrence of a string from an object, but only if the match occurs in one of the path's that have been pre-defined.
...
- 13
7
votes
1
answer
416
views
3
votes
0
answers
43
views
Test Driven Development in JS and Sinon Stub
I am going through some TDD and BDD tutorials which guide one through implementing a simple beverage-ordering system. While I think I understand the material, I am still wondering about some ...
- 501
3
votes
1
answer
121
views
An interesting use of the reduce function to convert tab-delimited data into JSON
I am learning functional programming in JavaScript. This is some code from a video tutorial by funfunfunction. I am particularly concerned about the way the existence of the customer key is checked in ...
- 133
2
votes
0
answers
98
views
Extracting data for a tag cloud using Lazy.js
I've just started using Lazy.js, which is my first exposure to a "functional style" javascript library. I'm still utterly lost as to which of the hundred different functional javascript libraries to ...
- 295
4
votes
1
answer
81
views
Continuable if error is null
I made a method that I can use to avoid having to handle errors from callbacks.
What it does is, call the passed method only if the first argument is null.
So essentially it will bypass to the last ...
- 141