cmph | C Minimal Perfect Hashing Library | Hashing library

by zvelo Shell Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | cmph Summary

cmph is a Shell library typically used in Security, Hashing, Example Codes applications. cmph has no bugs, it has no vulnerabilities and it has low support. However cmph has a Non-SPDX License. You can download it from GitHub.

cmph - c minimal perfect hashing library. a perfect hash function maps a static set of n keys into a set of m integer numbers without collisions, where m is greater than or equal to n. if m is equal to n, the function is called minimal. minimal perfect hash functions (concepts.html) are widely used for memory efficient storage and fast retrieval of items from static sets, such as words in natural languages, reserved words in programming languages or interactive systems, universal resource locations (urls) in web search engines, or item sets in data mining techniques. therefore, there are applications for minimal perfect hash functions in information retrieval systems, database systems, language translation systems, electronic commerce systems, compilers, operating systems, among others. the use of minimal perfect hash functions is, until now, restricted to scenarios where the set of keys being hashed is small, because of the limitations of current algorithms. but in many cases, to deal with huge set of keys is crucial. so, this project gives to the free software community an api that will work with sets in the order of billion of keys. probably, the most interesting application for minimal perfect hash functions is its use as an indexing structure for

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Support

cmph has a low active ecosystem.

It has 57 star(s) with 16 fork(s). There are 53 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 1 have been closed. On average issues are closed in 1 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of cmph is current.

Quality

cmph has 0 bugs and 0 code smells.

Security

cmph has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

cmph code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

cmph has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

cmph releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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cmph Key Features

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cmph Examples and Code Snippets

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Community Discussions

Trending Discussions on cmph

Operation between 2 arrays for many rows based on date

linking cuda object file .cu.o with CMake causes: In function `__sti____cudaRegisterAll()' * undefined reference to `__cudaRegisterLinkedBinary *

QUESTION

Operation between 2 arrays for many rows based on date

Asked 2022-Feb-19 at 10:40

I have a dataset df_1 that looks like this:

date stock A stock B stock C stock D 2020-11-01 4 8 14 30 2020-11-10 0.4 0.6 0.8 0.2 2020-11-30 6 10 20 35 2020-12-01 6 10 20 35 2020-11-31 8 12 25 0.1

And a second dataset, df_2:

date output1 output2 11/2020 stock A,stock B stock C, stock D 12/2020 stock B,stock D stock A,stock C

I want to, for every output in df_2, compute the return for each month. An expected result for this example is df_3:

date output1 output2 11/2020 stock A: 50%, stock B: 25% stock C:42.8% , stock D: 16.6% 12/2020 stock B: 20% ,stock D: 14.3% stock A: 33.3% , stock C: 25%

In the df_3, I do not need the result to be displayed with a comma separator, however, I need later to be able to plot everything in a graph with time on the X axis and stock values (from df_3) on the Y axis.

Update 1: As requested, here is the constructor of my sample dataframes: df1:

...

ANSWER

Answered 2022-Feb-19 at 10:40

Assuming the index of df1 is a DatetimeIndex and df2 a PeriodIndex. So suppose the following dataframes:

Source https://stackoverflow.com/questions/71165375

QUESTION

linking cuda object file .cu.o with CMake causes: In function `__sti____cudaRegisterAll()' * undefined reference to `__cudaRegisterLinkedBinary *

Asked 2020-Jul-07 at 05:54

I am having the following CMakeList.txt:

...

ANSWER

Answered 2020-Jul-07 at 05:54

I found a proper solution, the two things were important in finding that solution:

first i had to use the compatible compiler that is g++ 8.3.1 instead of the more recent 10.1.0
important is the proper use of the CUDA_SEPARABLE_COMPILATION property

Here is the full CMakeList.txt which now compiles entire code without compilation errors:

Source https://stackoverflow.com/questions/62675315

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install cmph

You can download it from GitHub.

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For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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