calamine | A pure Rust Excel/OpenDocument SpeadSheets file reader: rust on metal sheets | Data Visualization library
kandi X-RAY | calamine Summary
kandi X-RAY | calamine Summary
calamine is a pure Rust library to read and deserialize any spreadsheet file:.
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QUESTION
I am working on a project to have a random word guessing game. So far most of the code is working but I am trying to implement some rules on the length of words displayed to the user as a measure of game difficulty (shorter words = easier, etc). I am using a drop-down menu to get the user's setting selection, and then have rules in the JS tags that are supposed to be handling this.
After toying around with this for several days, I was hoping that a fresh pair of eyes might have a suggestion about where I am going wrong to be able to enforce the rules I am trying to enforce?
The specific functions that should be handling this are setDifficulty(), getSelection(), and randomWord()
ANSWER
Answered 2021-Dec-02 at 00:06Let's start by saving the difficulty setting in a variable along these :
QUESTION
I've been following the examples in the calamine documentation for pulling values out of spreadsheets.
They work fine but when trying to use parse empty cells the optional parser examples do not work. I'm wondering if any of you can spot what I'm missing here.
We have a spreadsheet with say 5 columns.
Here's the code that is working:
...ANSWER
Answered 2021-Aug-19 at 00:35The answer to this was somewhat elusive as Calamine is not very well documented concerning dates.
The answer in the link mentions providing the attribute #[serde(default)]
to use the Option::default
value when an input is missing.
This has the effect of causing Calamine to continue even when a cell is empty. The Calamine documentation leaves this out despite showing an "optional" parser as an example.
How can I deserialize an optional field with custom functions using Serde?
Knowing this, this question is somewhat of a duplicate of that one and the others listed in the answer there. However, I am not deleting the question as it is not immediately obvious what the problem actually is.
SolutionChanging the struct to look like this (and adding a date deserializer) fixed the problem:
QUESTION
I have taken an interest in Rust as a hobby (I'm a hobbyist programmer, I have used python and C++ to automate things at work), and I'm currently trying to practice by porting some of my python code for data analysis to rust, however it has proven to be quite difficult to me as I'm a complete noob at this and most resources and documentation tend more towards intermediate and advanced rust users (at least for data science).
I'm trying to use the calamine crate to load a xlsx file into a Vec, however only the first row is parsed when using .next() method of the iterator in a for loop, so I'm clearly doing something wrong. As extra information which may be of help, the xlsx file consists of 23851 rows and 28 columns, and the actual data (not considering headers, which are not the be read) begins at position A3.
...ANSWER
Answered 2021-Mar-08 at 00:45The mistake I see in your code is how you treat the iterator. next()
will return one element every time it is called. To get the next element it must be called one more time.
The loop
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Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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