Questions tagged [lookup]
A lookup (table) is an array that replaces run-time computation with a simpler array indexing operation. The savings in terms of processing time can be significant, since retrieving a value from memory is often faster than undergoing an 'expensive' computation or input/output operation. Over time the definition has become less strict, any kind of searching with a key value can be considered a lookup.
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Any bettter way to achieve this lookup table?
What I need:
I need a lookup table. Once the keywords are all found, then the value of the std::unordered_map is returned.And I don't care about the sequence of the ...
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importing excel data by matching and performing lookups
This code imports data from a separate sheet and matches it based on Column E's data, it does this for every cell then offsets to the next one (622*6) times. If there are any substitutions for vlookup ...
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Get & change file names from folder
This was originally posted as a Stack Overflow answer.
Objective
Import all filenames from a folder & change the filename using a mapping table.
Challenge
As described in the original posting, ...
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Sine function calculated via look-up table and linear interpolation
I have been attempting to implement a function calculating values of the sine function.
I know that there are several similar threads regarding this topic but my goal was to try
to implement such ...
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Rust Book: The Twelve Days of Christmas
In order to learn Rust I'm going through The Rust Book and did the implemented a program for the following exercise:
Print the lyrics to the Christmas carol “The Twelve Days of Christmas,” taking ...
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Word frequencies from large body of scraped text
I have a file with word frequency logs from a very messy corpus of scraped Polish text that I am trying to clean to get accurate word frequencies. Since this is a big text file, I divided it into ...
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Lookup closest value in Pandas DataFrame
I have a DataFrame that contains the data shown below:
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Naming initialization functions in a lookup table based implementation of integer logarithms
Background
(Feel free to skip; the help center just recommended adding background information :)
A few days ago, I was looking at some code which happened to use a flat array to store a complete ...
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Lookup table with fixed array
I implemented the following excercise:
Implement a lookup table with operations such as find(struct table*, const char*), ...
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Converting a query result into an key=>value pairs for a lookup table
My app has a number of lookup tables stored in a MySQL database that are used for various purposes such as a select element.
Unfortunately, the query results aren'...
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Typescript: Recursion file-system lookup
Previously I asked a question to find the best practice of recursively running a function to retrieve all import/export statements of files in NodeJs here.
After some discussion I'm not satisfied yet,...
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Lookups in list in C
I read about lookups in lists and I think that is what I did. I would like to compare it to a skip list, a binary search or a B+ tree.
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FizzBuzz - A quartet of solutions
Since the FizzBuzz challenge is about developing ideas, I've added
a third test case for which I chose divisibility by 7 and its accompanying
tag "Go". This tag was purposely given a length other ...
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Comparison of lookup methods
Background
(these are the bits technically not for review, but feel free to point out any minor points)
An Entity class can be identified by a name and at least ...
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