Top "Expression" questions

LINQ Expression to return Property value?

I'm trying to create a generic function to help me select thousands of records using LINQ to SQL from a …

c# linq linq-to-sql lambda expression

How to convert an Expression<Func<T, bool>> to a Predicate<T>

I have a method that accepts an Expression<Func<T, bool>> as a parameter. I would …

c# expression predicate

Javascript: difference between a statement and an expression?

I asked this question earlier, and after thinking about the topic some more, I began to wonder where the seemingly …

javascript expression terminology semantics

Rails SQL regular expression

I'm trying to search for the maximum number in the series A0001, A0002, A1234, A2351, etc... The problem is that …

ruby-on-rails activerecord sqlite expression

SQL JOIN: is there a difference between USING, ON or WHERE?

I was wondering if there is any difference in the way SQL performs on these join statements: SELECT * FROM a,…

sql performance syntax join expression

Use expression with a variable r

I am trying to label a plot with the following label: "Some Assay EC50 (uM)" where the "u" is a …

r expression

What's the difference between anonymous methods (C# 2.0) and lambda expressions (C# 3.0)?

What is the difference between anonymous methods of C# 2.0 and lambda expressions of C# 3.0.?

c# methods expression

C# Linq OrderBy filtering null or empty values to be last

I try to make my custom orderby extension method, i successfully worked my code but in addition i want to …

c# linq expression

SSIS Expressions setting two variables

I'm trying to use an "Expression Task" within SSIS to simply initialize/set two variables. This seemingly simple task has …

ssis expression bids sql-server-data-tools ssis-2012

How to filter datas in OpenERP using domain list

I want to filter recods in OPenERP using domain filter expression In the recored I have a field of list …

filter expression openerp