Project
Reverse Dependencies for ffi
The projects listed here declare ffi as a runtime or development dependency
Argon2 FFI binding
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Activity
0.15
Compact Language Detection for Ruby
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0.15
Ethereum's implementation in ruby.
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0.15
ruby-ffi based bridge from Ruby to Lua
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Activity
0.14
This gem facilitates modeling a test suite that is written in Gherkin (e.g. Cucumber, SpecFlow, Lettuce, etc.). It does this by providing an abstraction layer on top of the Abstract Syntax Tree that the 'cucumber-gherkin' gem generates when parsing features, as well as providing models for feature files and directories in order to be able to have a fully traversable model tree of a test suite's structure. These models can then be analyzed or manipulated more easily than the underlying AST layer.
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0.14
ROMA is one of the data storing systems for distributed key-value stores. It is a completely decentralized distributed system that consists of multiple processes, called nodes, on several machines. It is based on pure P2P architecture like a distributed hash table, thus it provides high availability and scalability.
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Activity
0.13
Create and modify virtual machines in VirtualBox using pure ruby
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0.13
Provides Ruby FFI bindings for Pocketsphinx, a lightweight speech recognition engine.
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0.13
Create and modify virtual machines in VirtualBox using pure ruby
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Activity
0.12
A plugin to the Chef Infra knife tool for creating instances on the Microsoft Azure platform
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0.12
Ruby-LLVM is a Ruby language binding to the LLVM compiler infrastructure library.
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0.12
Ruby-LLVM is a Ruby language binding to the LLVM compiler infrastructure library.
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0.12
Provides the ability to navigate and read entries from the systemd journal in ruby, as well as write events to the journal.
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0.12
TensorFlow - the end-to-end machine learning platform - for Ruby
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Activity
0.11
# Excel to Code
[![Tests Passing](https://travis-ci.org/tamc/excel_to_code.svg?branch=master)](https://travis-ci.org/tamc/excel_to_code)
excel_to_c - roughly translate some Excel files into C.
excel_to_ruby - roughly translate some Excel files into Ruby.
This allows spreadsheets to be:
1. Embedded in other programs, such as web servers, or optimisers
2. Without depending on any Microsoft code
For example, running [these commands](examples/simple/compile.sh) turns [this spreadsheet](examples/simple/simple.xlsx) into [this Ruby code](examples/simple/ruby/simple.rb) or [this C code](examples/simple/c/simple.c).
# Install
Requires Ruby. Install by:
gem install excel_to_code
# Run
To just have a go:
excel_to_c <excel_file_name>
This will produce a file called excelspreadsheet.c
For a more complex spreadsheet:
excel_to_c --compile --run-tests --settable <name of input worksheet> --prune-except <name of output worksheet> <excel file name>
See the full list of options:
excel_to_c --help
# Gotchas, limitations and bugs
0. No custom functions, no macros for generating results
1. Results are cached. So you must call reset(), then set values, then read values.
2. It must be possible to replace INDIRECT and OFFSET formula with standard references at compile time (e.g., INDIRECT("A"&"1") is fine, INDIRECT(userInput&"3") is not.
3. Doesn't implement all functions. [See which functions are implemented](docs/Which_functions_are_implemented.md).
4. Doesn't implement references that involve range unions and lists (but does implement standard ranges)
5. Sometimes gives cells as being empty, when excel would give the cell as having a numeric value of zero
6. The generated C version does not multithread and will give bad results if you try.
7. The generated code uses floating point, rather than fully precise arithmetic, so results can differ slightly.
8. The generated code uses the sprintf approach to rounding (even-odd) rather than excel's 0.5 rounds away from zero.
9. Ranges like this: Sheet1!A10:Sheet1!B20 and 3D ranges don't work.
Report bugs: <https://github.com/tamc/excel_to_code/issues>
# Changelog
See [Changes](CHANGES.md).
# License
See [License](LICENSE.md)
# Hacking
Source code: <https://github.com/tamc/excel_to_code>
Documentation:
* [Installing from source](docs/installing_from_source.md)
* [Structure of this project](docs/structure_of_this_project.md)
* [How does the calculation work](docs/how_does_the_calculation_work.md)
* [How to fix parsing errors](docs/How_to_fix_parsing_errors.md)
* [How to implement a new Excel function](docs/How_to_add_a_missing_function.md)
Some notes on how Excel works under the hood:
* [The Excel file structure](docs/implementation/excel_file_structure.md)
* [Relationships](docs/implementation/relationships.md)
* [Workbooks](docs/implementation/workbook.md)
* [Worksheets](docs/implementation/worksheets.md)
* [Cells](docs/implementation/cell.md)
* [Tables](docs/implementation/tables.md)
* [Shared Strings](docs/implementation/shared_strings.md)
* [Array formulae](docs/implementation/array_formulae.md)
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Activity
0.11
Ruby bindings to http://github.com/ry/http-parser and http://github.com/a2800276/http-parser.java
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Activity
0.11
Jetty-powered running shoes for JRuby/Rack.
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Activity
0.11
A Ruby wrapper for BSD's kqueue, using FFI
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Activity
0.1
Ruby wrapper for Bitwarden secrets manager SDK.
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Activity
0.1
FFI Ruby library for RS-232 serial port communication
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