patricia | Go PATRICIA tree implementation | Dataset library
kandi X-RAY | patricia Summary
kandi X-RAY | patricia Summary
This package is an implementation of a PATRICIA tree (or binary radix tree) in Go (or Golang).
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Top functions reviewed by kandi - BETA
- Size returns the number of elements in the tree .
- newEdge returns a new edge .
- New returns a new Tree .
patricia Key Features
patricia Examples and Code Snippets
Community Discussions
Trending Discussions on patricia
QUESTION
I have a file with user's names, one per line, and I need to compare each name in the file to all values in a csv file and make note each time the user name appears in the csv file. I need to make the search as efficient as possible as the csv file is 40K lines long
My example persons.txt file:
...ANSWER
Answered 2022-Mar-15 at 16:08I think @Tomalak's solution with SQLite is very useful, but if you want to keep it closer to your original code, see the version below.
Effectively, it reduces the amount of file opening/closing/reading that is going on, and hopefully will speed things up.
Since your sample is very small, I could not do any real measurements.
Going forward, you can consider using pandas for these kind of tasks - it can be very convenient working with CSVs and more optimized than the csv module.
QUESTION
How do you convert a given dataframe with a hierarchical structure and arbitrary shape (say, similar to the one below) into a new dataframe with a parent and child column?
Edit: Note that a constraint is that a child cannot be its own parent.
...ANSWER
Answered 2022-Mar-23 at 23:12What I can think of is using a for loop over the columns of the dataframe:
QUESTION
I have a list of strings of various lengths stored in df
. The total number of rows in df
is 301501. Example is as follows:
ANSWER
Answered 2022-Mar-18 at 05:07Assuming your item
column actually contains lists of strings (and aren't just strings that look like lists, e.g. '[1, 2, 3]'
), cast f_name
to set
and perform set intersection:
QUESTION
I have created the following dataset with key scenarios that I have in my actual dataset:
...ANSWER
Answered 2022-Mar-17 at 17:41If I understand your description correctly, for each row we want to evaluate the following conditions to decide whether include? = 1
:
- The row's group size for organisation_id-patient_id-date-consultation_mode is 1
- The row's group size for organisation_id-patient_id-date-consultation_mode is greater than 1 AND the row corresponds to a:
- Doctor AND is the first among doctors with the same id/name
- Nurse AND is the first among nurses with the same id/name
- Support AND is the first among support AND is part of a organisation_id-patient_id-date-consultation_mode group that has no doctor or nurse
This logic will create the "intermediate" table. To create the "final" table, we go through each category of consultation_mode and professional_role and set Nr_consultations_per_Pt_day = 1
if there's a corresponding entry with include? = 1
.
Based on the above expectation, here's how I'd do it:
QUESTION
I have already gone through Negative lookbehind equivalent in JavaScript, javascript regex - look behind alternative? but I am unable to get the correct regex. I have really tried myself, but not successful. I have did multiple trials to get the answer. As was unsuccessful hence posted this question.
I have a regular expression. It is working perfectly fine in the Chrome browser, but I face an issue in Safari and IOS. The issue is the negative lookbehind. Is there a way to either remove or mimic the negative lookbehind, so that the same expressions can work in all 3 environments?
...ANSWER
Answered 2022-Mar-03 at 19:17I would go for something like this:
QUESTION
I am trying to split a string into an array of text contents which each are present within the [@
and ]
delimiters. Just characters in between [@
and ]
are allowed to match. Being provided with a string like ...
ANSWER
Answered 2022-Feb-18 at 16:29Close, just missing the exclusion of [
:
QUESTION
As we know, a .ttf
(or otf
) font file's file name is not always the same with the font family name, for example, if I rename Arial.ttf
to abcd.ttf
, it's font family name is still Arial, so is there a package or library in golang to parse .ttf
and get that name?
I've tried freetype, but it seems no method can get it
...ANSWER
Answered 2022-Jan-28 at 14:55It is possible to read the data of a ttf file with this go library freetype, you just need to provide the font data and it will parse all the data. There is also an article about reading ttf files content manually with javascipt here.
Edit: If you are using freetype to get the family name or other information, you can use the Name reciever function of the struct, it accepts a NameId which is an alias for uint16. (You can find the complete table of the valid value here in the name id codes section)
for example, you can get the font family name by using the following code:
QUESTION
I have a pandas dataframe like this:
...ANSWER
Answered 2022-Jan-23 at 21:00You don't need groupby
just select the columns and then drop_duplicates
:
QUESTION
I dont know the proper way of describing this so please bear with me. Basically, I have a function in R that reads through a data frame and pastes the contents in a specific order--its used to write a tex file for LaTeX so I can make hundreds of labels very quickly.
Ive attached a simplified version with just the for loop. What I am hoping to do is have the code loop through four rows of the data, do something different for the fifth, then return to the next four rows of data. In the example below, it would be pasting one phrase for most of the rows and on the fifth it would paste something else--each based on the data frame.
For my actual code I want to flip the label horizontally to use up the most amount of paper possible. See attached photo., But in reality it all comes down to the for loop I think.
...ANSWER
Answered 2022-Jan-13 at 15:05Here's a solution in base R that requires minimal modification to your existing code.
SolutionWithin your for
loop, simply test your index this.label
with the modulo operator %%
like so:
QUESTION
I am trying to dynamically update a selectInput()
value based on a dynamically updated selectInput()
value. I can get the first value to update dynamically, but when I try and use those to update further values, I get an error:
ANSWER
Answered 2021-Dec-11 at 02:04A small and simple fix would be to filter the data with [[
instead of [
. The higher level difference between the two is explained in this post The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or dataframe .
Here, [[
always returns a vector whereas [
returns a dataframe which works for most of the cases as you expect but fails when there is no selection made for var2
yet meaning when var2
is empty.
[
returns
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