loady | Simple file reader and logger | CSV Processing library
kandi X-RAY | loady Summary
kandi X-RAY | loady Summary
Loady is a simple file reader and logger. Use it to read any delimited file. Loady makes it easy to conveniently convert input fields to an attribute hash, continue on error rows, and do basic logging. Loady was initially created to load hundreds of millions of rows from CSV files that had various data errors. It works with MRI ruby 1.9.3+. It uses ruby's CSV library to parse rows.
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Top functions reviewed by kandi - BETA
- Reads and returns an array of lines
- Read CSV file
- Convert attributes to a hash .
- Gets the default logger
- Logs a message .
loady Key Features
loady Examples and Code Snippets
Community Discussions
Trending Discussions on loady
QUESTION
I am a noob Lisper and am attempting Adam Tornhill's Lisp for the Web tutorial using Portacle Emacs.
I would very much appreciate an explanation of why the set-up code below will run happily and change the REPL cursor to RETRO-GAMES> if entered line by line in the REPL but does not seem to work if compiled in the buffer. (The first time it compiles it often throws an error saying it can't find the quickload packages; the REPL cursor never changes.)
If anyone can shed light on what this implies for compiled programs, it would be great. I'm struggling to understand the value of programming directly into a REPL rather than a saved file. If there are any noob-level resources on what a fully compiled program "looks like" in terms of whether it includes the type of loady code below, a link would make my day. Thank you.
...ANSWER
Answered 2020-Nov-04 at 16:26To see why this code is a problem for compilation, consider what the compiler must do when compiling a file containing it, in a 'cold' Lisp image, where 'cold' here specifically means 'without Quicklisp loaded'. To see this, divide it into chunks. For the sake of argument we'll imagine that the way the file compiler works is to read a form from the file, compile it, and write it out. It does have to work in a way which is equivalent to this for our purposes so that's OK here.
First chunk
QUESTION
How do I persuade the Rust compiler that the internal match
expression is fine here, as the outer match
has already restricted the possible types?
ANSWER
Answered 2019-May-08 at 21:35I think that you just need to refactor your code, obviously LoadX
and LoadY
are very close. So I think you should create a second enumeration that regroup them:
QUESTION
I have a piece of code that is supposed to streamread this text file:
...ANSWER
Answered 2017-Jul-21 at 14:30You are mistaken to think it is reading the first line. In fact, your current code reads the first value of each line. Due to your input this just happens to be a similar output to what the first line would be, which has lead to your confusion.
Your main loop should be looping through each line, then you can process the line and loop through each value. Which you can then use however you want.
Here is an example:
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