null | reasonable handling of nullable values | JSON Processing library

by guregu Go Version: v4.0.0 License: BSD-2-Clause

X-Ray Key Features Code Snippets(3)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | null Summary

null is a Go library typically used in Utilities, JSON Processing, Nodejs applications. null has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

null is a library with reasonable options for dealing with nullable SQL and JSON values. There are two packages: null and its subpackage zero. Types in null will only be considered null on null input, and will JSON encode to null. If you need zero and null be considered separate values, use these. Types in zero are treated like zero values in Go: blank string input will produce a null zero.String, and null Strings will JSON encode to "". Zero values of these types will be considered null to SQL. If you need zero and null treated the same, use these. All types implement sql.Scanner and driver.Valuer, so you can use this library in place of sql.NullXXX. All types also implement: encoding.TextMarshaler, encoding.TextUnmarshaler, json.Marshaler, and json.Unmarshaler. A null object's MarshalText will return a blank string.

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Security

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Support

null has a medium active ecosystem.

It has 1554 star(s) with 226 fork(s). There are 21 watchers for this library.

It had no major release in the last 12 months.

There are 6 open issues and 30 have been closed. On average issues are closed in 205 days. There are 3 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of null is v4.0.0

Quality

null has no bugs reported.

Security

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

License

null is licensed under the BSD-2-Clause License. This license is Permissive.

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

Reuse

null releases are available to install and integrate.

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null Key Features

No Key Features are available at this moment for null.

null Examples and Code Snippets

title: Value is null tags: type expertise: beginner cover: blog_images/broken-screen.jpg firstSeen: 2017-12-31T12:26:19+02:00 lastUpdated: 2020-10-20T23:02:01+03:00

npm

Lines of Code : 2

License : No License

Copy

const isNull = val => val === null;


isNull(null); // true

Create optional null options .

python

Lines of Code : 12

License : Non-SPDX (Apache License 2.0)

Copy

def _create_none_optionals(func_graph, n):
  """Creates `n` `None` optionals in func_graph.

  Args:
    func_graph: FuncGraph.
    n: `int` the number of `None` optionals to make.

  Returns:
    A list of tensors in func_graph.
  """
  with func_gr

Returns whether the value is a null merge .

python

Lines of Code : 11

License : Non-SPDX (Apache License 2.0)

Copy

def is_null_merge(self):
    """Indicate whether the wrapped spec is empty.

    In the degenerate case where self._spec is an empty specification, a caller
    may wish to skip a merge step entirely. (However this class does not have
    enough info

Community Discussions

Trending Discussions on null

remove duplicates , but have problems with delete column with "-"

Run a dynamic SQL query from a store procedure to populate a GridView

Parallelization in Durable Function

What is simplest way to prevent frame drop in flutter application on heavy task?

Fetch data from Cloud Firestore and store it in a constant

Pivot/Transpose rows into column and convert NULLs into 0's

remove everything between parentheses bigquery

Check sum of null values of large data frame

I need to strip all the symbols from a string in order to create an `IEqualityComparer` that ignores punctuation symbols

Multiple table joins in Oracle SQL with same column names

QUESTION

remove duplicates , but have problems with delete column with "-"

Asked 2021-Jun-16 at 02:46

i have this input file.. I need to remove the duplicated rows in column 13 but I have a problem with the data that contains a "-" why does it not remove them

input

...

ANSWER

Answered 2021-Jun-16 at 01:50

If your sample input is accurate, some of your column 13 contain trailing whitespace. If you want to treat them as being the same value, you can trim it.

For example, before using column 13, you could do:

Source https://stackoverflow.com/questions/67995108

QUESTION

Run a dynamic SQL query from a store procedure to populate a GridView

Asked 2021-Jun-16 at 01:31

I have a dynamic query that adds WHERE clauses according to the parameters received:

...

ANSWER

Answered 2021-Jun-15 at 23:39

I found the answer with the following lines of code:

Source https://stackoverflow.com/questions/67993827

QUESTION

Parallelization in Durable Function

Asked 2021-Jun-16 at 01:02

I'm trying to understand how parallelization works in Durable Function. I have a durable function with the following code:

...

ANSWER

Answered 2021-Jun-10 at 08:44

There are two approaches that are possible. The first is to use a suborchestrator for each job so that each suborchestrator handles just a specific job. Here is the docs for this approach https://docs.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-sub-orchestrations?tabs=csharp Example from docs seem to be alike to yours.

The other is to use ContinueWith so that each job has its own "chain"

Source https://stackoverflow.com/questions/67910695

QUESTION

What is simplest way to prevent frame drop in flutter application on heavy task?

Asked 2021-Jun-16 at 00:29

I've ran into problem getting UI lags when this line is running:

...

ANSWER

Answered 2021-Jun-16 at 00:29

I don't believe you can use SharedPreferences within an Isolate without support for MethodChannel / accessing platform-specific underlying OS frameworks on iOS / Android.

You would need to use FlutterIsolate or a similar package to provide that support.

chunhunghan has a good answer detailing this.

Alternatively, you could run the crypt.generateKeys() by itself in your Isolate.spawn() call and use the results after in a separate method accessing SharedPreferences. (Assuming that crypt package is also not relying on platform-specific code.)

Source https://stackoverflow.com/questions/67993518

QUESTION

Fetch data from Cloud Firestore and store it in a constant

Asked 2021-Jun-15 at 23:56

const set = firebase.firestore().collection("workoutExercises").doc(firebase.auth().currentUser.uid).get()
  console.log(set)

...

ANSWER

Answered 2021-Jun-15 at 23:56

Firebase calls like this are asynchronous, meaning they don't return immediately. In Javascript, you can deal with this in a couple of different ways, using async/await or Promises.

Here's an example using a Promise:

Source https://stackoverflow.com/questions/67994072

QUESTION

Pivot/Transpose rows into column and convert NULLs into 0's

Asked 2021-Jun-15 at 23:42

I have some data that looks like this:

...

ANSWER

Answered 2021-Jun-15 at 16:44

Two options. The first will use coalesce() to eliminate the null values. The second will create a a unique set of intersections via a CROSS JOIN and a UNION ALL (brute force)

Example

Source https://stackoverflow.com/questions/67989908

QUESTION

remove everything between parentheses bigquery

Asked 2021-Jun-15 at 23:41

Stringfield1 has the following

...

ANSWER

Answered 2021-Jun-15 at 23:39

Use regexp_replace(Stringfield1, r'$\d+$$', '')

if applied to sample data in your question - output is

Source https://stackoverflow.com/questions/67994619

QUESTION

Check sum of null values of large data frame

Asked 2021-Jun-15 at 23:08

Hi I tired to check null values of my data frame(house) which has 81 columns but house.isnull().sum() display only few columns data.

...

ANSWER

Answered 2021-Jun-15 at 23:08

Try running this line before you get the output

pandas.set_option('display.max_rows', 500)

See this other article on this

Pandas: Setting no. of max rows

Source https://stackoverflow.com/questions/67994381

QUESTION

I need to strip all the symbols from a string in order to create an `IEqualityComparer` that ignores punctuation symbols

Asked 2021-Jun-15 at 23:05

In part of my application I have an option that displays a list of albums by the current artist that aren't in the music library. To get this I call a music API to get the list of all albums by that artist and then I remove the albums that are in the current library.

To cope with the different casing of names and the possibility of missing (or extra punctuation) in the title I have written an IEqualityComparer to use in the .Except call:

...

ANSWER

Answered 2021-Jun-15 at 23:05

If you're going to use the CompareOptions enum, I feel like you might as well use it with the CompareInfo class that it's documented as being designed for:

Defines the string comparison options to use with CompareInfo.

Then you can just use the GetHashCode(string, CompareOptions) method from that class (and even the Compare(string, string, CompareOptions) method if you like).

Source https://stackoverflow.com/questions/67994184

QUESTION

Multiple table joins in Oracle SQL with same column names

Asked 2021-Jun-15 at 22:43

Currently I have 3 tables like below

Master

ID_NUMBER ZIPCODE 1 12341 2 12342 3 12343 4 12344

Table1

ID_NUMBER CITYNAME COUNTYNAME 1 NEW YORK QUEENS 3 DETROIT SUFFOLK

Table2

ID_NUMBER CITYNAME COUNTYNAME 2 ATLANTA ROCKLAND 4 BOSTON WINCHESTER

My desired output is like below. I want to filter based on the zipcode from master table

ID_NUMBER ZIPCODE CITYNAME COUNTYNAME 2 12342 ATLANTA ROCKLAND

How would i go about writing a query for this? Below is what i have tried but it's giving me null values if the ID_NUMBER is not found on that particular table.

...

ANSWER

Answered 2021-Jun-15 at 22:37

Use COALESCE():

Source https://stackoverflow.com/questions/67994239

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

Vulnerabilities

No vulnerabilities reported

Install null

You can download it from GitHub.

Support

This package is intentionally limited in scope. It will only support the types that driver.Value supports. Feel free to fork this and add more types if you want.

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