Expression | platform Swift library | Apps library

by nicklockwood Swift Version: 0.13.7 License: MIT

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

kandi X-RAY | Expression Summary

Expression is a Swift library typically used in Apps applications. Expression has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A cross-platform Swift library for evaluating mathematical expressions at runtime

Support

Quality

Security

License

Reuse

Support

Expression has a low active ecosystem.

It has 753 star(s) with 45 fork(s). There are 17 watchers for this library.

It had no major release in the last 6 months.

There are 7 open issues and 23 have been closed. On average issues are closed in 42 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of Expression is 0.13.7

Quality

Expression has no bugs reported.

Security

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

License

Expression 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

Expression releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Expression

Get all kandi verified functions for this library.

Expression Key Features

No Key Features are available at this moment for Expression.

Expression Examples and Code Snippets

No Code Snippets are available at this moment for Expression.

Community Discussions

Trending Discussions on Expression

How to print ggplot for multiple tables in this case?

Primary expression error when defining a vector with ternary operator

How to make substring optional Kotlin regex

What are the differences between GNU grep's basic/extended and PCRE (`-P`) regular expressions?

JLEX lexical generator error: unterminated string at the end of the line

what is the best regular expression to replace non numeric character in a string preceded by certain phrase in python?

How to use a generic method to remove outliers only if they exist in R

Moq System.NotSupportedException

MVVM WPF - How to update DataGrid bound to ObservableCollection

Spring JPA DTO projection and handling the nested projection with null values

QUESTION

How to print ggplot for multiple tables in this case?

Asked 2021-Jun-15 at 22:10

I have this code which prints multiple tables

...

ANSWER

Answered 2021-Jun-15 at 20:59

So, this is a good opportunity to use purrr::map. You are half way there by applying code to one dataframe.

You can take the code that you have written above and put it into a function.

Source https://stackoverflow.com/questions/67992308

QUESTION

Primary expression error when defining a vector with ternary operator

Asked 2021-Jun-15 at 21:48

I have a simple code where I try to define a vector as one of two initializer lists using a ternary operator:

...

ANSWER

Answered 2021-Jun-15 at 21:48

Because you can't have braces in that context. If you look at cppreference on list initialization, you see that the case inside a ternary operator isn't defined. So it can't be parsed correctly and you get the error you have.

You'd have to use something like this :

Source https://stackoverflow.com/questions/67993769

QUESTION

How to make substring optional Kotlin regex

Asked 2021-Jun-15 at 21:32

I am practicing regular expressions in Kotlin and trying to start with a multiline string. However, I am not receiving any matches. I feel like I am doing it right and can't figure out the problem.

Test lines:

...

ANSWER

Answered 2021-Jun-15 at 21:32

Here is how it works:

Source https://stackoverflow.com/questions/67993649

QUESTION

What are the differences between GNU grep's basic/extended and PCRE (`-P`) regular expressions?

Asked 2021-Jun-15 at 20:55

GNU grep's basic (BRE) and extended (ERE) syntax is documented at https://www.gnu.org/software/grep/manual/html_node/Regular-Expressions.html and PCRE is summarized at man pcresyntax, but there is no explicit comparison. What are the differences between GNU grep's basic/extended and PCRE (-P) regular expressions?

...

ANSWER

Answered 2021-Jun-15 at 20:55

My research of the major syntax and functionality differences from http://www.greenend.org.uk/rjk/tech/regexp.html:

. in GNU grep does not match null bytes and newlines (but does match newlines when used with --null-data), while Perl, everything except \n is matched.
[...] in GNU grep defines POSIX bracket expressions, while Perl uses "character" classes. I'm not sure on the details. See http://www.greenend.org.uk/rjk/tech/regexp.html#bracketexpression
"In basic regular expressions the meta-characters ?, +, {, |, (, and ) lose their special meaning; instead use the backslashed versions \?, \+, \{, \|, \(, and \)." From https://www.gnu.org/software/grep/manual/html_node/Basic-vs-Extended.html. ERE matches PCRE syntax.
GNU grep \w and \W are the same as [[:alnum:]] and [^[:alnum]], while Perl uses alphanumeric and underscore.
GNU grep has \< and \> for start and end of word.

Perl supports much more additional functionality:

"nongreedy {}" with syntax re{...}?
additional anchors and character types \A, \C, \d, \D, \G, \p, \P, \s, \S, \X. \Z, \z.
(?#comment)
shy grouping (?:re), shy grouping + modifiers (?modifiers:re)
lookahead and negative lookahead (?=re) and (?!re), lookbehind and negative lookbehind (?<=p) and (?


Atomic groups (?>re)
Conditional expression (?(cond)re)
... and more, see man pcresyntax

Source https://stackoverflow.com/questions/67943781

QUESTION

JLEX lexical generator error: unterminated string at the end of the line

Asked 2021-Jun-15 at 20:46

I am generating lexical analyzer with JLEX. I found a regular expression for string literal from this link and used it in .jflex file same of other expressions. but it gives me this error : unterminated string at the end of the line
StringLiteral = \"(\\.|[^"\\])*\"

can anyone help me please, thanks.

...

ANSWER

Answered 2021-Jun-15 at 20:46

The regular expression you copied is for (f)lex, which uses a slightly different syntax for regular expressions. In particular, (f)lex treats " as an ordinary character inside bracketed classes, so [^"\\] is a character class matching anything other than (^) a quotation mark (") or a backslash (\\).

However, in JFlex, the " is a quoting character, whether outside or inside brackets. So the " in the character class is unterminated. Hence the error message.

So you need to backslash-escape it:

Source https://stackoverflow.com/questions/67991038

QUESTION

what is the best regular expression to replace non numeric character in a string preceded by certain phrase in python?

Asked 2021-Jun-15 at 20:02

I have to parse lists of names, addresses, etc. that were OCRed and have invalid/incorrect characters in them and on the state postal code I need to recognize the pattern with a 2 character state followed by a 5 digit postal code and replace any non numeric characters in the postal code. I might have OK 7-41.03 at the end of a string I need to remove the hyphen and period. I know that re.sub('[^0-9]+', '', '7-41.03') will remove the desired characters but I need it only replace characters in numbers when found at the end of the string and only if preceded by a two character state wrapped in spaces like OK. It seems if I add anything to the regular expression as far as a lookbehind expression then I can't seem to get the characters replaced. I've come up with the following but I think there must be a simpler expression to accomplish this. Example:

...

ANSWER

Answered 2021-Jun-15 at 20:02

You need to make use of re.sub callbacks:

Source https://stackoverflow.com/questions/67990895

QUESTION

How to use a generic method to remove outliers only if they exist in R

Asked 2021-Jun-15 at 19:58

I am using a method to remove univariate outliers. This method only works if the vector contains outliers.

How is it possible to generalize this method to work also with vectors without outliers. I tried with ifelse without success.

...

ANSWER

Answered 2021-Jun-15 at 19:58

Negate (!) instead of using - which would work even when there are no outliers

Source https://stackoverflow.com/questions/67992709

QUESTION

Moq System.NotSupportedException

Asked 2021-Jun-15 at 18:09

I get it again and again

...

ANSWER

Answered 2021-Jun-15 at 18:09

You have to make the property overridable, so make it virtual:

Source https://stackoverflow.com/questions/67991390

QUESTION

MVVM WPF - How to update DataGrid bound to ObservableCollection

Asked 2021-Jun-15 at 17:35

What I'm trying to do:

I have a WPF app, linked to a SQL-server. I am using the MVVM-light package (I do actually have Prism.Core installed, but I'm not sure if I'm using it or not.... new to MVVM).

There's a DataGrid, bound to an ObservableCollection. I have been trying to implement the PropertyChangedEventHandler, but I can't seem to get it to work.

I have a Delete button bound, and I am able to remove rows, but when I re-open the form, the changes does not carry over.

I tried to change the binding-mode for the DataGrid from OneWay to TwoWay. With OneWay, the changes does not carry over when I re-open the form. With TwoWay, I get this error message when opening the child form (which contains the DataGrid):

System.InvalidOperationException: 'A TwoWay or OneWayToSource binding cannot work on the read->only property 'licenseHolders' of type 'Ridel.Hub.ViewModel.LicenseHoldersViewModel'.'

So, If I then add a set; to my public ObservableCollection licenseHolders { get; }, the program runs, but the previous problem persists, like it did when there was a OneWay mode configuration on the DataGrid.

What do I need to do to get this to work without communicating directly with the Sql-server, which would defy the whole point of using this methodology in the first place?

ViewModel: ...

ANSWER

Answered 2021-Jun-15 at 13:26

You are confusing topics. The VM needs InotifyPropertyChanged events, which you have but are not using, to notify the Xaml in the front-end that a VMs property has changed and to bind to the new data reference.

This is needed for Lists or ObservableCollections. Once that is done, the ObservableCollection will then send notifications on changes to the list as items are added or removed.

Because you miss the first step:

Source https://stackoverflow.com/questions/67986693

QUESTION

Spring JPA DTO projection and handling the nested projection with null values

Asked 2021-Jun-15 at 17:31

I am using class based projection with constructor expressions. here is a sample code form my work

...

ANSWER

Answered 2021-Jun-15 at 00:02

try using left join

Source https://stackoverflow.com/questions/67943340

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

Vulnerabilities

No vulnerabilities reported

Install Expression

The Expression class is encapsulated in a single file, and everything public is prefixed or name-spaced, so you can simply drag the Expression.swift file into your project to use it. If you wish to use the [AnyExpression](#anyexpression) extension then include the AnyExpression.swift file as well. If you prefer, there’s a framework that you can import which includes both the Expression and AnyExpression classes. You can install this manually by drag and drop, or automatically using CocoaPods, Carthage, or Swift Package Manager.