Tupl | The Unnamed Persistence Library | Database library
kandi X-RAY | Tupl Summary
kandi X-RAY | Tupl Summary
The Unnamed Persistence Library. Tupl is a high-performance, concurrent, transactional, scalable, low-level embedded database. Features include record-level locking, upgradable locks, deadlock detection, cursors, hot backups, striped files, encryption, replication, compression, nested transaction scopes, direct lock control, sorting, views, filters, transforms, unions, intersections, and full memory mapped support. Tupl can be used directly, or it can be used for implementing a high-level database. Tupl is powerful enough for supporting all the requirements of relational SQL databases as well as NoSQL databases. Because Tupl doesn't impose any structure or encoding for data, a high-level database is free to implement the most efficient format it requires.
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Top functions reviewed by kandi - BETA
- Split a leaf node into a new tree .
- Determine the common type of two column types .
- Finish the indy update .
- Trace a trace operation .
- Encodes the bound bounds .
- Gather a temp tree from the original tree using the temp tree .
- Parses the properties file .
- Adds a store method to the table .
- Main entry point .
- Accepts a connection .
Tupl Key Features
Tupl Examples and Code Snippets
Community Discussions
Trending Discussions on Tupl
QUESTION
While implementing a custom tuple (here), I found there is a wired swap() function that takes const parameters (cppreference):
ANSWER
Answered 2022-Apr-07 at 13:59You have missed the footnote about when that overload is available:
This overload participates in overload resolution only if
std::is_swappable_vistruefor all i from 0 tosizeof...(Types).
If you have a type const_swappable such that swap(const const_swappable &, const const_swappable &) is sensible, then there is no reason why you shouldn't be able to swap const std::tuple &.
QUESTION
Here is the dataset.
...ANSWER
Answered 2022-Mar-11 at 11:17Here's a way using separate_rows:
QUESTION
I have an array of positive integers. For example:
...ANSWER
Answered 2022-Feb-27 at 22:44This problem has a fun O(n) solution.
If you draw a graph of cumulative sum vs index, then:
The average value in the subarray between any two indexes is the slope of the line between those points on the graph.
The first highest-average-prefix will end at the point that makes the highest angle from 0. The next highest-average-prefix must then have a smaller average, and it will end at the point that makes the highest angle from the first ending. Continuing to the end of the array, we find that...
These segments of highest average are exactly the segments in the upper convex hull of the cumulative sum graph.
Find these segments using the monotone chain algorithm. Since the points are already sorted, it takes O(n) time.
QUESTION
I was using pyspark on AWS EMR (4 r5.xlarge as 4 workers, each has one executor and 4 cores), and I got AttributeError: Can't get attribute 'new_block' on . Below is a snippet of the code that threw this error:
...ANSWER
Answered 2021-Aug-26 at 14:53I had the same error using pandas 1.3.2 in the server while 1.2 in my client. Downgrading pandas to 1.2 solved the problem.
QUESTION
I have been trying out an open-sourced personal AI assistant script. The script works fine but I want to create an executable so that I can gift the executable to one of my friends. However, when I try to create the executable using the auto-py-to-exe, it states the below error:
...ANSWER
Answered 2021-Nov-05 at 02:2042681 INFO: PyInstaller: 4.6
42690 INFO: Python: 3.10.0
QUESTION
Suppose I have the following function:
...ANSWER
Answered 2021-Dec-16 at 15:48zip will return an iterator. Once unpacked, it cannot be unpacked again, it gets exhausted.
Maybe if you want to make sure that only zip objects get converted to list as you said it would work but it would not be efficient, you can check for it type:
QUESTION
I'm looking for a way to have all keys / values pair of a nested object.
(For the autocomplete of MongoDB dot notation key / value type)
...ANSWER
Answered 2021-Dec-02 at 09:30In order to achieve this goal we need to create permutation of all allowed paths. For example:
QUESTION
I am working on a "heartbeat" application that pings hundreds of IP addresses every minute via a loop. The IP addresses are stored in a list of a class Machines. I have a loop that creates a Task (where MachinePingResults is basically a Tuple of an IP and online status) for each IP and calls a ping function using System.Net.NetworkInformation.
The issue I'm having is that after hours (or days) of running, one of the loops of the main program fails to finish the Tasks which is leading to a memory leak. I cannot determine why my Tasks are not finishing (if I look in the Task list during runtime after a few days of running, there are hundreds of tasks that appear as "awaiting"). Most of the time all the tasks finish and are disposed; it is just randomly that they don't finish. For example, the past 24 hours had one issue at about 12 hours in with 148 awaiting tasks that never finished. Due to the nature of not being able to see why the Ping is hanging (since it's internal to .NET), I haven't been able to replicate the issue to debug.
(It appears that the Ping call in .NET can hang and the built-in timeout fail if there is a DNS issue, which is why I built an additional timeout in)
I have a way to cancel the main loop if the pings don't return within 15 seconds using Task.Delay and a CancellationToken. Then in each Ping function I have a Delay in case the Ping call itself hangs that forces the function to complete. Also note I am only pinging IPv4; there is no IPv6 or URL.
Main Loop
...ANSWER
Answered 2021-Nov-26 at 08:37There are quite a few gaps in the code posted, but I attempted to replicate and in doing so ended up refactoring a bit.
This version seems pretty robust, with the actual call to SendAsync wrapped in an adapter class.
I accept this doesn't necessarily answer the question directly, but in the absence of being able to replicate your problem exactly, offers an alternative way of structuring the code that may eliminate the problem.
QUESTION
For a given list of tuples, if multiple tuples in the list have the first element of tuple the same - among them select only the tuple with the maximum last element.
For example:
...ANSWER
Answered 2021-Sep-02 at 06:45QUESTION
Suppose I have two lists list_1 and list_2
list_1 = [1, 5, 10]
list_2 = [3, 4, 15]
I want to get a list of tuples containing elements from both list_1 and list_2 such that the difference between the numbers in a tuple is under a some constant c.
E.g. suppose c is 2 then the tuples I would have would be:
[(1, 3), (5, 3), (5, 4)]
Of course one can iterate over both lists and check that the difference between 2 elements is less than c, but that has a complexity of n^2 and I would rather reduce that complexity.
...ANSWER
Answered 2021-Oct-29 at 19:38Here is an implementation of the idea of Marat from the comments:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install Tupl
You can use Tupl like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the Tupl component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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