expression

Identify text data in image to read mm/dd, description and amount using opencv python

此生再无相见时 提交于 2020-02-24 11:14:08
问题 import re import cv2 import pytesseract from pytesseract import Output from PIL import Image from pytesseract import image_to_string img = cv2.imread('/home/cybermakarov/Desktop/1.Chase Bank-page-002.jpg') d = pytesseract.image_to_data(img, output_type=Output.DICT) keys = list(d.keys()) date_pattern = '^(0[1-9]|[12]|[1-9]|3[02])/' Description_pattern='([0-9]+\/[0-9]+)|([0-9]+)|([0-9\,\.]+)' n_boxes = len(d['text']) for i in range(n_boxes): if int(d['conf'][i]) > 60: if re.match(description

How to convert an OData query string to .NET expression tree

混江龙づ霸主 提交于 2020-02-17 07:41:12
问题 Completely rewriting this question since I understand more now than I did before. I am attempting to abstract out the conversion of an OData query string directly to .NET expression tree. There appear to be a number of questions and articles on this, but no answers that provide an abstract solution that relies soley on the Microsoft.Data.OData namespace (ie, all examples rely on WebAPI, Entity Framework, or some other library). The answer that does the best at providing an abstract solution

Add two expressions to create a predicate in Entity Framework Core 3 does not work

情到浓时终转凉″ 提交于 2020-02-04 07:09:21
问题 I am trying to build an "And" predicate method using C# with Entity Framework Core 3 in a .NET Core application. The function adds two expressions to each other and passes it to an IQueryable code: public Expression<Func<T, bool>> AndExpression<T> (Expression<Func<T, bool>> left, Expression<Func<T, bool>> right) { var andExpression = Expression.AndAlso( left.Body, Expression.Invoke(right, left.Parameters.Single())); return Expression.Lambda<Func<T, bool>>(andExpression, left.Parameters); }

Add two expressions to create a predicate in Entity Framework Core 3 does not work

*爱你&永不变心* 提交于 2020-02-04 07:02:28
问题 I am trying to build an "And" predicate method using C# with Entity Framework Core 3 in a .NET Core application. The function adds two expressions to each other and passes it to an IQueryable code: public Expression<Func<T, bool>> AndExpression<T> (Expression<Func<T, bool>> left, Expression<Func<T, bool>> right) { var andExpression = Expression.AndAlso( left.Body, Expression.Invoke(right, left.Parameters.Single())); return Expression.Lambda<Func<T, bool>>(andExpression, left.Parameters); }

Add two expressions to create a predicate in Entity Framework Core 3 does not work

会有一股神秘感。 提交于 2020-02-04 07:01:48
问题 I am trying to build an "And" predicate method using C# with Entity Framework Core 3 in a .NET Core application. The function adds two expressions to each other and passes it to an IQueryable code: public Expression<Func<T, bool>> AndExpression<T> (Expression<Func<T, bool>> left, Expression<Func<T, bool>> right) { var andExpression = Expression.AndAlso( left.Body, Expression.Invoke(right, left.Parameters.Single())); return Expression.Lambda<Func<T, bool>>(andExpression, left.Parameters); }

How do I build Expression Call for Any Method with generic parameter

◇◆丶佛笑我妖孽 提交于 2020-02-01 05:20:06
问题 I'm just trying make the same expression like below using Linq.Expression: Expression<Func<Organization, bool>> expression = @org => @org.OrganizationFields.Any(a => a.CustomField.Name == field.Name && values.Contains(a.Value)); In this example above I have an entity called Organization and it has a property called OrganizationsFields as IEnumerable and I want to find any occurrence that match with Any parameter expression. I just using the code below to generate expression dynamically:

C# expression body with {get;} vs without [duplicate]

空扰寡人 提交于 2020-01-30 08:50:05
问题 This question already has answers here : What is the difference between getter-only auto properties and expression body properties? (2 answers) Closed 2 years ago . Since I don't know the term that applies to this, I am not sure what to search for existing comments on this. I recently wasted a ton of time with an expression body similar to: public SomeListViewModel SearchSomeModel => new ShowSomeViewModel{...}; When I tried to set values such as: SearchSomeModel.Property = 12345; It acted

C# expression body with {get;} vs without [duplicate]

断了今生、忘了曾经 提交于 2020-01-30 08:50:04
问题 This question already has answers here : What is the difference between getter-only auto properties and expression body properties? (2 answers) Closed 2 years ago . Since I don't know the term that applies to this, I am not sure what to search for existing comments on this. I recently wasted a ton of time with an expression body similar to: public SomeListViewModel SearchSomeModel => new ShowSomeViewModel{...}; When I tried to set values such as: SearchSomeModel.Property = 12345; It acted

Expression evaluation stopped working in Eclipse (STS)

为君一笑 提交于 2020-01-25 05:20:13
问题 In my years of using Eclipse, I've never seen this and can't figure out what's wrong. For some reason, the Expressions View (as well as the Display View) will no longer evaluate even simple expressions (like "5", "Hello", "myVariable", "1+2"). What I get is, "Evaluations must contain either an expression or a block of well-formed statements". Weirder still, if I hover over a variable, the tooltip window shows the correct value and let's me drill into the object. I've tried restarting,

Expression evaluation stopped working in Eclipse (STS)

妖精的绣舞 提交于 2020-01-25 05:20:01
问题 In my years of using Eclipse, I've never seen this and can't figure out what's wrong. For some reason, the Expressions View (as well as the Display View) will no longer evaluate even simple expressions (like "5", "Hello", "myVariable", "1+2"). What I get is, "Evaluations must contain either an expression or a block of well-formed statements". Weirder still, if I hover over a variable, the tooltip window shows the correct value and let's me drill into the object. I've tried restarting,