pq | SSL Handles bad connections for database/sql Scan time | Runtime Evironment library

by bmizerany Go Version: Current License: MIT

X-Ray Key Features Code Snippets(2)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | pq Summary

pq is a Go library typically used in Server, Runtime Evironment, Nodejs applications. pq has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

pq

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Quality

Security

License

Reuse

Support

pq has a low active ecosystem.

It has 176 star(s) with 31 fork(s). There are 13 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 10 have been closed. On average issues are closed in 202 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of pq is current.

Quality

pq has no bugs reported.

Security

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

License

pq is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

pq 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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pq Key Features

No Key Features are available at this moment for pq.

pq Examples and Code Snippets

Initialize the minimum PQ .

python

Lines of Code : 16

License : No License

Copy

def __init__(self, graph, start_vertex):
        self._pq = MinPQ()
        self._marked = defaultdict(bool)
        self._mst = Queue()
        self.visit(graph, start_vertex)
        while not self._pq.is_empty():
            edge = self._pq.del_mi

Initialize pq .

python

Lines of Code : 9

License : No License

Copy

def __init__(self, size: int) -> None:
        """Max priority queue initialization.

        Args:
            size (int): priority queue size
        """
        self._pq = [MIN_VAL] * (size + 1)
        self._size = 0
        self._min = None

Community Discussions

Trending Discussions on pq

How to decode dictionary column when using pyarrow to read parquet files?

Detect pattern matches within a corpus

When is angle bracket required in initializing generic type in Java?

Weird namespace concept in c++

Combining or appending to pyarrow.dataset.expressions

how do i find the problem with Go failed import?

Reading parquet file is slower in c++ than in python

dictionary with multiple values per key python

Need constraints for y position or height when height is unambiguous with stack views in stack views

Swift Stack View horizontal UIlabels not filling properly

QUESTION

How to decode dictionary column when using pyarrow to read parquet files?

Asked 2021-Jun-15 at 13:59

I have three .snappy.parquet files stored in an s3 bucket, I tried to use pandas.read_parquet() but it only work when I specify one single parquet file, e.g: df = pandas.read_parquet("s3://bucketname/xxx.snappy.parquet"), but if I don't specify the filename df = pandas.read_parquet("s3://bucketname"), this won't work and it gave me error: Seek before start of file.

I did a lot of reading, then I found this page

it suggests that we can use pyarrow to read multiple parquet files, so here's what I tried:

...

ANSWER

Answered 2021-Jun-15 at 13:59

You have a column with a "struct type" and you want to flatten it. To do so call flatten before calling to_pandas

Source https://stackoverflow.com/questions/67986881

QUESTION

Detect pattern matches within a corpus

Asked 2021-Jun-14 at 09:26

I would like to check if the text of a variable contains some geographical reference. I have created a dictionary with all the municipalities I'm interested in. My goal would be to have a dummy variable capturing whether the text of the variable includes any word included in the dictionary. Can you help me with that? I know it isprobably very easy but I'm struggling to do it.

This is my MWE

...

ANSWER

Answered 2021-Jun-14 at 08:34

You don't need to create your dictionary from the corpus - instead, create a single dictionary entry for your locality list, and look that up to generate a count of each locality. You can then count them by compiling the dfm, and then converting the feature of that dictionary key into a logical to get the vector you want.

Source https://stackoverflow.com/questions/67921981

QUESTION

When is angle bracket required in initializing generic type in Java?

Asked 2021-Jun-14 at 06:33

All three lines below compiled, are there any differences? If not, is it a good Java practice to always stick to the first one as it has the least amount of code?

...

ANSWER

Answered 2021-Jun-13 at 21:40

It is totally equivalent rows (see diamond):

Source https://stackoverflow.com/questions/67962711

QUESTION

Weird namespace concept in c++

Asked 2021-Jun-13 at 20:19

I came across this:

...

ANSWER

Answered 2021-Jun-13 at 20:19

template using PQ = priority_queue;

Source https://stackoverflow.com/questions/67962155

QUESTION

Combining or appending to pyarrow.dataset.expressions

Asked 2021-Jun-10 at 07:28

I am trying to filter pyarrow data with pyarrow.dataset. I want to add a dynamic way to add to the expressions.

...

ANSWER

Answered 2021-Jun-10 at 07:28

You can use operator.and_ to have the functional equivalent of the & operator. And then with functools.reduce it can be recursively applied on a list of expressions.

Using your three example expressions:

Source https://stackoverflow.com/questions/67908792

QUESTION

how do i find the problem with Go failed import?

Asked 2021-Jun-08 at 15:31

while working on a Go web-app project (for learning), i have encounterd the following issue:

at the begining, everything was alright. i imported packages from the standart library, used them in the code and everyting worked. up to the moment when i have tried to import the pq driver for postgresql.

the actions that i did in detail: the folder with the project files inside: notes.

project is in the directory: C:\Users\david\go\src\github.com\davidkuch\notes

when starting, i run the command: go mod init.

i imported the standart package "database/sql".

to download the package i used: go get "github.com/lib/pq"

after that- go mod tidy

but the compiler says:could not import {package-name} no required module provides package {package-name}

i tried to read through the docs of the related topics, but couldn't find where i did a mistake. the same happens for another package i have tried to install from github.

can anyone point out where i should be looking to find the problem? as the compiler says that he "cannot find", i made a lot of effort checking namings and paths. but i see the package exactly in the path i try to import from. to be more precise:

after some hours of trying to fix that by myself, i ask You for some help or explanation of what is happening.

thank you!

...

ANSWER

Answered 2021-Jun-08 at 15:31

project is in the directory: C:\Users\david\go\src\github.com\davidkuch\notes

You dont need to do that. Just make a folder like: C:\Users\david\notes.

Then make C:\Users\david\notes\main.go:

Source https://stackoverflow.com/questions/67889997

QUESTION

Reading parquet file is slower in c++ than in python

Asked 2021-Jun-07 at 18:39

I have written code to read the same parquet file using c++ and using python. The time taken to read the file is much less for python than in c++, but as generally we know, execution in c++ is faster than in python. I have attached the code here -

...

ANSWER

Answered 2021-Jun-06 at 06:53

It is likely that the Python module is bound to functions compiled in a language such as c++ or using cython. The implementation of the python module may thus have better performance, depending on how it reads from the file or processes data.

Source https://stackoverflow.com/questions/67856457

QUESTION

dictionary with multiple values per key python

Asked 2021-Jun-06 at 18:35

I have one dataframe -

...

ANSWER

Answered 2021-Jun-06 at 18:35

Try:

Source https://stackoverflow.com/questions/67862384

QUESTION

Need constraints for y position or height when height is unambiguous with stack views in stack views

Asked 2021-Jun-04 at 13:21

I created a "TitleDetails" view below and I'd like to stack that titleDetails view into another reusable view. There are no errors thrown for the TitleDetails constraints. I'd just like to stack 2 TitleDetails views into a new view.

However, when I do the constraints it appears I need the Y position for height, however the height of titleDetails should be determined by its contents and the space between the two is constrained as well. So I'm not seeing where the ambiguity is coming from.

...

ANSWER

Answered 2021-Jun-04 at 13:21

What you've shown would be very easy to implement via code, rather than XIB files.

However, the reason you're getting the ambiguity is because interface builder cannot determine the intrinsic height as you have designed it.

IF your current implementation gives you the desired layout at run-time, you can get rid of the "ambiguous" errors / warnings by giving your top TitleDetails view a "Placeholder" intrinsic height.

Select the view, and then in the Size Inspector pane:

Source https://stackoverflow.com/questions/67809420

QUESTION

Swift Stack View horizontal UIlabels not filling properly

Asked 2021-Jun-02 at 01:30

So I am designing what should be a simple view.

This is how I want it to be, with the title taking up only the horizontal space that it needs. However, when I set the number of lines for the Details view to 0 so that it can be multiple lines, or when I do the same for the title label, I automatically get this:

I do like using a Stack View for these labels, because it seems the most natural choice to account for dynamic text. All that I would have to do when the text gets larger is change the axis to vertical. I have already set the hugging priority of the title label to 252 and I have already set a proportionate widths constraint so that the details will have a greater or equal width to the title.

So there is no ambiguity for the widths of the labels

the title label width should equal the width of its contents, until the contents reach the point that they would exceed the width of the details label, then word wrap.
The details label should should have a width equal to its contents as well, until it would exceed the bounds allowed by the higher priority hugging on the left and the trailing constraint on the right, then it should word wrap.

Here is my xib as an xml source code

...

ANSWER

Answered 2021-Jun-02 at 01:30

If you set the content hugging priority of the left label to 1000 (Required), it works.

There might be something with a very high priority in the stack view that is stopping the label from hugging its content.

Source https://stackoverflow.com/questions/67797678

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

Vulnerabilities

No vulnerabilities reported

Install pq

You can download it from GitHub.

Support

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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